EP0585737B1 - Flat roof-tile - Google Patents

Abstract

The flat roof tile (1) forms a horizontal head and side expansion joint when laid and, owing to its rebating, causes multiple overlapping. The outer and inner head interlocking rib (213, 217) merges, without interruption in each case, into an outer and inner side interlocking rib (513, 515), respectively. In each case a single cutout is present in the foot/side interlocking corner (48) and in the head/top interlocking corner (29). The aim of the invention is to provide a flat roof tile which is of the greatest possible format, having a large degree of head clearance, and in the case of which, even where the tiles have slid to an extreme degree, protection from rain is ensured in the corner between four tiles, to be precise even when the tiles are laid with a roof inclination of less than 22 DEG . This is achieved in that the foot/side interlocking corner (48) has only a single corner cutout (486) to which there is assigned, over its entire width, a receiving surface (5137) which, when laid as part of the roof covering, is overlapped over its width by a portion (4251) of the inner foot interlocking rib (425) which is located on the underside of the top interlocking part (3). <IMAGE>

Description

The invention relates to a flat roof tile with a when laying a horizontal head and side joint and a multiple overlapping head, side, Folded foot and deck, as well as with a cut-out in the foot gusset and a single cutout and a plateau in the Head deck fold.

From the European patent 198 479 is a interlocking tile of the aforementioned Kind known that has proven itself in practice. Of the Head clearance of the head fold corresponds approximately to 2 to 3% of the Cover length, it serves to compensate for any shrinkage differences.

A high headroom is a danger for rain safety of the covered roof. The four-brick corner in particular is always a weak point because there are easily leaks there. Only the rectangle is available to lock it, which by the width of the side cover and the width the head cover is formed. To make matters worse, in the area of the four-brick corner also the entire head and side play must be taken into account.

According to the recognized rules of the roofing trade Flat roof tiles only up to a minimum roof pitch of 22 ° be relocated. The experts fear lower roof pitches rain safety in stronger winds. The most critical Fall occurs when the wind is seen from the midfield arriving at a slight angle, rain or snow in the folds of the Blowing in four-brick leaks. In this case, the experts expect in particular with flat-pitched roofs, the overflow of the Head or side interlocking or rain entry into the four-tile corner, since the dwell time of the on the Rainwater draining off the roof with a flatter roof pitch increases.

Below the previous standard roof incline of 22 ° for Flat roof tiles, however, is for reasons of competition with others Roofing elements urgently needed. The technical rules of the Roofing trades have been around for almost twenty years with bitumen corrugated sheets a minimum roof pitch of up to 7 ° and at Bitumen shingles with a rafter length of up to 10 meters have a minimum slope from 15 ° to not to mention the flat roof with 3 °.

The problem of rain safety also increases because a large headroom is desired for a simple reason becomes. Features a scale-like roof element, like a flat roof tile over a large headroom, then the roofer able to push or push the pans, So by changing the length of the deck to specified roof lengths without using intermediate bricks, such as cross bars to have to use. Such special tiles, such as Cross halves are expensive because they are only in small numbers needed and manufactured. Cross-half bricks also change the cascade shape of the roof and thus the flow model of the entire roof area.

It could be observed again and again that especially in the area water was introduced in the row with transverse bricks. On The base of a roof tile is roughly in the lower one Third of the bricks is an overpressure area. For half-way bricks this overpressure area is often in the area of the four-tile corner, which is directly in the row with transverse bricks follows.

For economic reasons and because of the desired rain safety a relatively large headroom is desired, in order to avoid the cross-half bricks that are still used today.

The headroom should be designed so large that from a row of bricks with a rafter length of 5 meters by sliding or bumping can be compensated. That corresponds to one relatively large-sized bricks with a headroom of at least 30 mm.

This changes with drawn or pushed bricks Flow model quite considerably, even more so than in extreme situations, in the fully pushed or fully pulled state, by the occurrence of capillary traction between the an two flanks in each of the folds lying very close together Bricks, the risk of water ingress is increased.

In the manufacture, transport and laying of roof tiles their size and surface area play a role. Everyone's goal Manufacturing consists of as little as possible per unit area To need roof tiles for both material costs and installation costs per unit area. Concrete roof tiles laid for a long time with only 10 pieces per square meter. The clay roof tile grew out of this competitive situation again and again market disadvantages.

Although this goal has been pursued for a long time, it is difficult to achieve. Flat roof tiles are pressed from clay, dried and burned. This natural material has a total shrinkage of between 7% and 10% in the usual way.

The total shrinkage remains proportional to the top surface, however, the curvatures caused by the shrinkage take with them the enlargement of the top surface and thus the individual brick exponentially too. For this reason you can use flat roof tiles not enlarge arbitrarily.

The individual goals listed above are mutually dependent contrary way. An increase in headroom causes more rain insecurity especially in the four-tile corner. An increase in the surface area leads to more and in particular stronger curvatures and taken together contradicts everything the desire to have the standard roof pitch below the usual 22 ° Lower rafter inclination.

DE 30 25 813 shows a monk and nun-like interlocking tile, which is used when laying forms a horizontal head and side joint and a multiple overlap of the Head, side, foot and ceiling folds conditional. In the corner of the foot and top deck it has a single cutout.

At the foot of the outer gusset rib, it has a plateau that is covered is notched by a notch of the inner foot rib. This type of intervention is poor, however. It has been shown in practice that in the critical foot area of the interlocking tile cannot be prevented. This is especially why unfavorable, because with the well-known interlocking tile, the side rebate drains on the foot side and thus the collected water is driven back into the side fold becomes.

The same applies to EP 432 784. It relates to a longitudinally movable interlocking tile three side fold ribs, on the foot side of which a plateau directed obliquely downwards to the left is subordinated as a conclusion. There is no effective locking in the foot area. This does not change the fact that the outer top rebate rib of this interlocking tile into the outer side fold rib and the inner top fold rib into the inner side fold rib flow out.

The aim of the invention is a roof tile as large as possible with the greatest possible headroom, even at extreme Situations, including when pulled and pushed, guarantees such a high level of rain safety, that this brick will also convince the experts may have the minimum roof pitch that has been in effect since the 1930s can be below 22 °.

The invention has for its object, at the same time the drainage and the rainproofness of the side folds, in particular in the four-tile corner with less rake inclination improve.

This object is achieved in that the Fußseitenfalzeck has only one corner cutout, the one in its entire width is assigned a receiving surface, which at Covering in width from a section of the inner foot rib is covered, which is on the underside of the cover fold part located.

The flat roof tile according to the invention primarily has a rectangular plan, the top fold part is rectangular. This saves costs because of space savings right-angled drying frames and cassettes can be used can.

The one after the only corner cut-out of the foot gusset Recording area creates space for the covering inner foot rib. It can be significantly higher this way be designed and for additional sealing in the four-tile corner to care. Rain security increases as the interior Rest the foot rib on the receiving surface when covering and thus an additional barrier for sealing the foot side End of the side fold of the covering brick forms.

The headroom can be increased with this flat roof tile without causing a leak in the four-brick corner must be feared. On the contrary, that of the foot gusset neckline downstream receiving surface ensures an increased Headroom with improved sealing in the Four-brick leak.

From generic EP 198 479 it is known that at the Brick underside an outer top seam flank into an outer one False rib opens. The inner foot rib ends against it below the top fold part.

An advantageous further development now exists in the invention in that the inner foot rib extends to the outer Cover fold flank extends and when covering with a section rests on the receiving surface and the inner foot rib flush with the contact surface of the outer cover seam flank opens out, so that the same and the foot fold rib form a plane.

The inner foot rib according to the invention essentially runs - Following the profile of the brick - at the same height over the entire Width of the brick and just flows into the support surface the outer cover fold flank. This is the inner foot rib especially in the critical, the side fold of the covered Brick pulled up area much lower than in the state of the art and prevents this unfavorable contractions in the side fold part of the covered Neighboring brick.

The generic flat roof tile has an outer, respectively inner head rebate, each without interruption in an outer or inner side seam rib transforms. The side folds have an outer and inner side rebate rib, between which a side rebate groove is arranged. The entire side interlocking is covered covered by the rebate section of the neighboring tile.

The invention is now further developed in that the receiving area over the entire width of the side fold extends and you in the Falzckfalzzecknung one in the brick longitudinal direction extending bearing surface is adjacent, the either to her or to the midfield or to both.

When covering, the underside lies on this contact surface of the top rebate part of the adjacent brick and thus closes the toe fold opposite to the said one Midfield.

On the back of the tile of the flat roof tile according to the invention it is advantageous to arrange a surface in the foot gusset cutout, which is as wide as the side fold part and their Length of at least the added width of the outer head fold and corresponds to the top groove. This area can be viewed in its entirety Length laterally limited by a condensation water rib be in terms of the desired sealing of this Surface can be led to the inner foot rib.

When the covering is laid, it is laid out in the corner of the gusset provided area on an approximately as large area of the Head deck fold corner cutout. Through this edition, on the one hand the four-tile corner is sealed, however, at the same time the surface coordination of the two surfaces the movability in the longitudinal direction of the brick and thus the headroom guaranteed.

To the air resistance between these two and thus the To increase tightness, it is advantageous to use these sealing surfaces to be as big as possible.

In an advantageous development of the invention, that the outer side rebate rib to the receiving surface is passed through and in front in a hook-shaped, equally high and changes to the bend facing the brick center field.

It is precisely with regard to the sealing of the four-brick corner favorable if the outer foot rib between the cover fold part and the foot gusset corner section divided into two parallel branches between which there is a groove. The inner one The rebate rib can be bent in the area of the top seam exhibit. It can continue to be flush at the same height - following the outer profile of the flat roof tile - from the bottom side seam corner be led through to the outer cover fold flank.

The outer foot rib is ramified in this embodiment and is divided into two separate sections. The two branches lie in the covering on the tile center field of the covered one Brick on and form at the same time with the edition double wind wall, the top interlocking of the covered brick closes to the eaves. The separation of the foot rib in Two branches allow a vortex chamber there, which can be used for induction Raining brings. The two branches do not only seal them Interlocking of the covered tile, but also a any overflow of the inner head rebate rib there and the top rebate part of the neighboring flat roof tile in the area of the four-tile corner. Even with an unfavorable inflow of On the eaves side, they prevent rain and Snow.

In combination with the ramification of the outer foot rib it is advantageous in terms of a desired large headroom, if there is an inner rebate rib in the area of the top fold part has an offset and in particular flush in the same height from the bottom of the rebate to the outer flank of the top seam is passed through.

The bend lies on the foot side when covering End of the side fold in front of the receiving surface. In this way it can be made considerably higher than state of the art and provides additional coverage in the critical four-tile corner. At the same time the resistance to tread of the tile in the top rebate area.

In the invention it is provided as a further development that the outer side rebate rib led through to the receiving surface and in front in a hook-shaped, equal height around the central brick field directional kink passes.

Through this training, the side folds in the direction Brick foot completed. At the same time, drainage the side rebate groove on the central tile field.

To the water flowing out of the side interlocking as far as possible to prevent wind from coming back into the bottom corner of the gusset it is convenient to be pushed in between arranged at the foot end of the side groove Water switch and the first bend in the outer side fold rib there is a second hook-shaped kink, which with the first bend and in the foot end area of the outer Side fold rib forms a U-profile and a sunken surface includes.

The two hook-shaped bends serve several purposes. By moving the water switch from the brick base towards Brick head, the water collected in the side groove is removed from the critical four-brick corner held, the water flow in the direction on the brick center field is improved. The U shape of the two kinks and one end of the outer side fold part increases the section modulus of the brick in this area.

The U-shaped arrangement of the bends also ensures one previously unknown vortex space in the area of the lowered Area that is particularly affected by the blowing in of rain and snow prevents a wind from the sky. The U-profile shields the Water switch and ensures a calm drain.

In general, the two bends and the one in between U-profile to record that when the wind flows in the lower Third of each row of bricks - due to the foot step - An overpressure area arises, in which rainwater especially in the lower quarter of the tile via the side folds is pressed.

The rainwater pressed in in this area can change of the two hook-shaped bends in the area of the U-profile, or the lowered surface in which so relax the resulting chamber. Especially with gusty winds As a result, the changing pressure conditions that occur can in the area of the brick base and the side folds in are compensated in an exemplary manner.

It is advantageous if the lowered area within the U-profile in level is higher than the brick center field. The the same applies to the water switch. By the higher level prevents that located on the central tile field Water flows back into the subsidence.

To ensure the tightness in the foot area of the side folds, it is convenient if the kinks are the same height have as the adjacent side fold rib.

In a development of the invention, the outer Head fold rib from the head side fold corner without interruption up to one in front of the sealing surface of the top deck corner Perform cones and extend this rib one Provide cross rib that closes the sealing surface on the head side. The cross rib extends primarily over the entire Width of the sealing surface up to the top deck corner. When covering the brick engages this cross rib in the sealing surface one, as in the form of a hollow at the bottom of the Foot side seam corner cutout is located.

The one in the top deck fold in the extension of the outer top fold rib arranged cross rib limits the sealing surface there towards the top end of the brick. The same goes for that on the back of the brick on the edge of the cut-out corner arranged rib section, which there the side of an inner Sealing surface located at the foot seam rib to the foot end of the foot side seam corner completes.

The rib piece lies on the top when covering the sealing surface in the top deck fold corner and forms a slide shoe. As a result, not only the edition but also the tightness in the four-tile target corner has also increased significantly.

A further improvement of the tightness in the four-tile corner is by choosing between the outer and inner head rebate rib reached the existing deflection rib, which extends from the tenon Brick longitudinal direction to the inner head rebate rib, respectively to their hook-shaped, extending over the cover fold part Continuation rib extends.

In view of the desired headroom, it is favorable if there is free space in the top deck or foot seam fold arranged sealing surfaces is dimensioned so large that it corresponds to the desired shift range. In the drawn State is the flank of the rib section facing the head part on the flank of the transverse rib facing the foot part. On the other hand, when pushed, there is the cutout at the bottom of the foot facing flank of the rib section in contact at the hook-shaped deflection of the top fold rib of the lower covering Brick.

The one in the area of the foot gusset and the kink the outer side fold rib upstream receiving surface can, according to a development of the invention, a hump be assigned, which together with the receiving surface at the Coverage covered by the section of an inner foot rib and for the inclusion of the hump at the transition to outer cover seam flank has a recess.

The hump is located in the area of the foot gusset and is the kink of the outer side fold rib, preferably slightly offset, upstream. He closes the recording area in Direction towards the central brick field. He has two Functions. First of all, it serves as a water switch, around which in the Side interlocking collected water secured on the central tile field to transfer and from flowing into the foot gusset to hold. It also serves as a wind barrier against that Blowing into the fold of the foot.

Thanks to the particularly space-saving construction of the two corner cutouts in the top and bottom side folds it can be particularly difficult with drawn bricks it can happen that on the Blown rainwater running back into the side groove Side rebate groove of the covering tile drained, whereby from First, more and more water gets into the side rebate groove to the eaves can and threatens to overflow in the eaves area.

The hump according to the invention now provides a remedy. When mounting the cusp is from a recess in the inner foot rib covered, which is designed so that the overlapping Bricks can also be moved against each other. The desired sealing in the four-tile corner is nevertheless given.

In this sense, it is also advantageous that the hump free end of the kink is upstream and away from this Extends to the end of the foot gusset cutout. He extends primarily over the entire depth of the receiving surface and completes this in the direction of the central brick field. Its height is preferably only half as high as the outer side fold rib or their kinking.

In an advantageous development of the invention There is a groove on the inside of the top seam flank, which extends from the Head deck to foot deck fold and extends in one plane lies with the recess. This prevents the covering Use the direct contact of the inner cover seam flank of the overlapping one Brick on the facing towards the central brick field Flank of the inner gusset rib. There is over the whole Length of the inner gusset rib created a free space that allows a calm water drain in the direction of the eaves. At the same time, the direct contact of the inner cover seam flank to the rib base of the inner side rebate rib prevented.

The aforementioned problems arise in particular in the case of unfavorable ones Flow conditions, especially when the rain from bottom right on the outer cover fold flank of the overlapping Brick is blown. In this case it can happen that rainwater increasingly between the inner side seam rib and the outer cover fold flank. The invention Nut is able to ingest this extra water dissipate around the flow.

To promote this water drainage, but the interlocking of the head of the covered tile when covering before water entry To protect, it is beneficial if the groove is close to extends to the outer edge of the hatchback corner section and the contact surface of the outer cover seam rib there as a groove finish forms a hook-shaped bend. In this way the Rebate of the covered tile at the end of the groove again secured.

In order to drain the side interlocking relatively quickly and thus to prevent water from entering the interior of the roof beyond the side rebate rib in unfavorable wind conditions, it is advantageous if the second hook-shaped bend to form an oblique drainage within the water switch runs at an acute drainage angle in the direction of the brick center area. This angle may be in a range of 35 ° to 65 °, in particular at 45 ^o are, to accelerate the water removal. This gives the water sufficient propulsive force in the direction of the central tile field, it is deflected from the critical cutout at the bottom of the foot.

The same applies to the oblique alignment of the head flank the first bend and for the somewhat sloping head flank of the hump.

In another embodiment of the invention, the second Kinking over an inner extension rib, primarily in alignment with the inner gusset rib and parallel to the outer side fold rib runs. It preferably extends to short in front of the first bend and ends there in front of a water opening the one inside the outer gusset rib, the two Kinks and the extension rib delimited, lowered Surface.

For the drainage of this lowered area, it is favorable if the level is higher than the brick center field and / or the water switch. By increasing the levels, you prevent that the water on the central tile field, for example due to unfavorable wind currents in the subsidence, respectively the water switch flows in.

A rib section can engage in said lowering is in front of the middle top seam rib at the foot end. This rib piece soothes the interior of the sunken surface and prevents entry even in unfavorable wind currents of indentations in the overlap area of the overlapping Brick.

Burnt clay is hydrophilic. This material-specific The advantage has never been consistent with the known roof tile models utilized.

This is now provided in the invention. On the back of the brick collecting water, for example spray drops, the entered via the outer gusset rib should be targeted be dissipated. For this purpose is on the back of the brick an advantageous development of the invention the entire length of the side rebate part on the outer edge of the brick of the side fold part arranged longitudinal bar available which are preferably at the same height from the top corner fold to to a stacking bump arranged in the foot side fold extends from which a condensation rib to the inner foot rib runs. This longitudinal bar runs along the edge of the brick and not interrupted, so that spray drops over the Longitudinal bar to the stacking hump and over the condensation water rib get to the inner foot rib. From there they will be at covering in the interlocking head of the covered brick registered and transferred.

Around this longitudinal bar from the brick head to the brick foot in To be able to carry out the same amount, they are usually there existing support humps moved inwards.

To prevent the longitudinal bar from resting on roof battens, is a support bar in a development of the invention provided that at the head end of the brick back in the area of the side fold part is arranged. It should be higher than be the longitudinal bar to an unwanted edition of the same Exclude roof battens. It is primarily that long dimensioned so that the bricks in the area of the top side seam only with the help of said support bar on the roof battens lies on.

In the known flat roof tiles, the side groove is in its width so dimensioned that it covers the The middle cover seam rib provides sufficient space poses. Bricks are pushed in width or drawn, this has the disadvantage that water to an increased extent is driven into the back of the brick. To this fact meet, the invention advantageously provides the outer Flanks of the outer and inner side fold ribs a smaller one Allocate distance from each other than the inner Flanks of the cover fold part and the inner cover fold rib of the The case is, so that when covering the middle cover fold rib neither the inner flanks when pulled and still pushed touches the inner or outer side fold rib.

In conventional flat roof models, the top rebate groove is at about the same height as the middle field. In order to keep it higher in the area of the water switch than the middle field, in order to implement a tear-off edge, the side rebate groove is raised from the area of the top side seam corner. This creates a kink in the side groove where a water bag can form. In order to avoid this water sack, an overflow head is often arranged in the area of the head side fold corner on the inner side fold rib. This overflow head represents an opening in the endangered four-tile corner, through which heavy droplet entry can occur. It is therefore proposed to slightly raise the surface of the side rebate groove slightly below the head side rebate corner in order to obtain the desired step on the water switch. The angle of inclination should not be greater than 5 °. With the desired minimum roof pitch of 14 ^o and a brick pitch of 6 °, an increase in the water switch of 9 ° would result in a flat surface and delay the water drainage.

It is in the area of the inner top seam flank of the back of the brick known to provide an inner top fold rib, which usually has a Kinking on the inner flank ends. Disadvantageous is doing that spray drops that run along this inner top seam rib drain into the foot area and run into the roof reach.

In the invention, this disadvantage is eliminated in that the inner top seam rib at its foot end in a tapered and lowered extension rib opens up to the inner Foot rib, or until it is bent is. This extension rib, also called a sword called attached water droplets to the inner foot rib, from where it covers the top fold area of the covered brick can reach and be removed.

In order to adequately drain the interlocking of the head, it is beneficial provided that the inner head rebate rib and the continuation rib in the end area of the midfield on the top seam side overlap and there an overflow for the head folds with form the opening direction parallel to the transverse axis of the brick. By overlapping and arranging the overflow parallel to Brick cross axis becomes even with unfavorable flow conditions the free entry of what is on the central tile field Prevents water from crumpling the head.

The depth of the overflow head can be such that it is a flat connection between the top rebate groove and the center panel forms.

With regard to the engagement of the folds when covering it is also advantageous if the continuation rib of inner top rebate rib in front of the brick center panel is. To make it difficult for the head to flow freely, or to prevent and still the free To ensure discharge, one of the two ribs, primarily the continuation rib, notched in the overlap area will. The notching can take place in such a way that the Overflow in the direction of the top rabbet groove, steady or discontinuous narrowed. To both in the area of the inner head fold to achieve the same tightness as the continuation rib it is favorable if the two, at least in the area of Brick center field, the same height.

The continuation rib can be in the area of the curvature of the cover fold part be reduced in height and crenellated there have two notches. They are said to be horizontal Stacking of the flat roof tiles the top of each Pick up the ends of the two top seam ribs.

In order to cover the side seam fold before blowing in when covering protect, it is beneficial if the inner head rebate rib is on its end facing the side fold part tapers in thickness and a locking pin in the area of the taper having. The taper allows the outer top seam flank of the covering tile, the locking pin prevents the blowing in of despite the rejuvenation Rain and snow.

Around the interlocking of the head from the side of the hatchback corner cutout Locking forth here is in another embodiment provided the invention, the deflection rib on her To provide a transition to the tenon with a longitudinal tenon, primarily is as high as the cone itself and which is in Length of the brick extends as far as the offset the inner foot rib is offset towards the brick base.

In order for a horizontal stacking of flat roof tiles To achieve locking of the same is provided to arrange support bumps on the back of the brick, which differ from the Top-side seam corner along the brick edge to the foot-side seam corner extend. When stacked, these support humps lie in the side groove of the pan underneath. A stacking hump is aligned with the support humps Folded corner is located on the horizontal stacking the hook-shaped kink of the pan underneath hangs up.

The invention is described below using exemplary embodiments described.

Fig.1

eine Draufsicht auf eine erste Ausführungsform einer erfindungsgemäßen Flachdachpfanne,

Fig.2

eine Druntersicht auf die Flachdachpfanne von Figur 1,

Fig. 3

einen Querschnitt durch das Vierziegeleck mit einer Schnittansicht der Ziegeln I, II, III und IV,

Fig.4

eine Durchblickansicht von zwei miteinander horizontal gestapelter erfindungsgemäßer Flachdachpfannen im Bereich des Kopfseitenfalzecks,

Fig.5

eine Phantomdraufsicht auf das Vierziegeleck, bei der die Ziegel I und II jeweils mit durchgezogenen Linien im Bereich der Kopfverfalzung zu sehen sind und von Ziegel III die Ziegelunterseite im Bereich des Fußseitenfalzeckausschnittes mit strichpunktierten Linien dargestellt ist,

Fig.6

eine Phantomdraufsicht auf die Ziegel I und II, wobei von Ziegel I die Draufsicht des Kopfseitenfalzecks in durchgezogenen Linien und von Ziegel II die Druntersicht des Kopfdeckfalzecks in strichpunktierten Linien dargestellt ist,

Fig.7

eine Phantomdraufsicht auf die Ziegeln II und III im Vierziegeleck, wobei von Ziegel II das Kopfdeckfalzeck in durchgezogenen Linien und von Ziegel III das Deckfußfalzeck in strichpunktierten Linien mit seiner Ziegelrückseite dargestellt ist,

Fig.8

eine Phantomdraufsicht auf die miteinander verlegten Ziegel III und IV, wobei von Ziegel III das Fußende der Seitenverfalzung und von Ziegel IV das Fußende der Deckverfalzung zusammen mit der Fußverfalzung zu sehen ist,

Fig.9

eine Phantomdraufsicht auf die Ziegel II und IV, wobei von Ziegel II die Oberseite des Kopfdeckfalzecks und von Ziegel IV die Unterseite des Fußdeckfalzecks gezeigt ist,

Fig. 10

eine Draufsicht auf eine zweite Ausführungsform der erfindungsgemäßen Flachdachpfanne,

Fig. 11

eine Druntersicht auf die Flachdachpfanne von Figur 10,

Fig. 12

einen Querschnitt gemäß der Linie III-III von Figur 10 durch zwei miteinander eingedeckte, benachbarte, erfindungsgemäße Flachdachpfannen, und

Fig.13

einen Längsschnitt in Sparrenrichtung durch zwei miteinander eingedeckte Flachdachpfannen gemäß der Linie IV-IV von Figur 10.

It shows:

Fig. 1

a plan view of a first embodiment of a flat roof tile according to the invention,

Fig. 2

a bottom view of the flat roof tile of Figure 1,

Fig. 3

3 shows a cross section through the four-tile corner with a sectional view of the bricks I, II, III and IV,

Fig. 4

FIG. 2 shows a view through the view of two flat roof tiles according to the invention stacked horizontally with one another in the area of the side seam fold, FIG.

Fig. 5

2 shows a phantom top view of the four-tile corner, in which the bricks I and II can be seen in each case with solid lines in the area of the head folds and in the case of brick III the underside of the tile is shown in the area of the cut-out corner of the foot with dash-dotted lines,

Fig. 6

2 shows a phantom top view of the bricks I and II, the top view of the top-side hinge corner being shown in solid lines by brick I and the underside view of the top-corner hinge corner being shown in dash-dotted lines by brick II,

Fig. 7

2 shows a phantom top view of the bricks II and III in the four-tile corner, brick bricks II showing the top deck fold in solid lines and brick III the deck liners in dash-dotted lines with its brick back,

Fig. 8

2 shows a phantom plan view of the bricks III and IV laid with one another, the base end of the side folds of brick III and the base end of the cover folds of brick IV being visible together with the base folds,

Fig. 9

FIG. 2 shows a phantom top view of the bricks II and IV, the top of the top flap corner being shown by brick II and the underside of the bottom flap corner by brick IV,

Fig. 10

a plan view of a second embodiment of the flat roof tile according to the invention,

Fig. 11

a bottom view of the flat roof tile of Figure 10,

Fig. 12

a cross section along the line III-III of Figure 10 by two covered, adjacent, flat roof tiles according to the invention, and

Fig. 13

a longitudinal section in the rafter direction through two roof tiles covered with each other according to the line IV-IV of Figure 10.

Numbers I to IV relate to the covering of the invention Flat roof tiles on those at the four-tile meeting point involved bricks. The brick is at the bottom right I, the tile at the bottom left with II, the tile at the top right with III and the brick marked IV on the top left.

In the following, reference is made to the first embodiment, as shown in Figures 1 to 9.

The flat roof tile 1 has a rectangular plan and has via a top fold part 2, top fold part 3, foot fold part 4 and a side fold part 5. The middle field 6 is flat and will of a cover fold part which is essentially rectangular in plan 3 flanked.

At the four corners of the tile there is the top decking seam 29, the Kopfseitenfalzeck 28, the Fußseitenfalzeck 48 and that False-footed corner 49.

The head fold part 2 comprises an outer head fold rib 213, as well an inner head rebate rib 217 and a head rebate groove therebetween 216.

The outer top fold rib 213 has in the area of the top side fold corner a lowering 2132 that merges into a corner outer side rebate rib 513. With the exception of this depression runs the outer top fold rib 213 at the same height up to Cover fold flank 313 and ends there in the area of the top cover fold corner 29 in a pin 2133.

The inner top fold rib 217 has in the head side fold corner 28 over an extension 2176, which over a jump in height in a the inner side rebate rib 515 also lowered there merges.

The inner top rabbet rib 217 also runs in a constant manner Height above the central tile field and ends in front of the top seam flank 313 on an overflow 2171. Overlapped in this area the inner head fold rib 217 with an upstream Continuation rib 2174, which extends approximately to the outer Cover fold flank 311 extends.

The overflow 2171 forms a flat flow channel from the Top rebate groove 216 on the central tile field 6. It has a horizontal opening parallel to the brick wall axis, those of the overlapping ends of the top rabbet rib 217 and the continuation rib 2174 is limited.

In order not to lose too much depth in the longitudinal direction of the brick, can one of the two ribs or in the overlap area both have also been released. The overlap area can be so be designed so that the free outlet opening of the flow channel is wider than the opening in the area of the top groove 216 to achieve a certain nozzle opening. In this The two crenellated notches are also interesting 2175 of the continuation rib 2174, since it among other things Vents for better ventilation of the overflow Form 2171.

The outer and inner head fold ribs 213 and 217, respectively have the same height in the area of the central tile field. The top rebate groove 216 is level with a side rebate groove 514 about.

The sealing surface 296 extends almost over the entire length of the corner cutout 295 or the head fold. The Width of the sealing surface 296 corresponds to the width of the side fold part 5, consisting of inner and outer side fold rib 513 and 515 and the intermediate side groove 514.

The sealing surface 296 becomes the head end of the brick delimited by a transverse rib 298, which is in the extension the outer top rabbet rib 213 between the pin 2133 and the lateral end of the brick in the area of the top deck corner. The cross rib is kept considerably lower than the outer top rabbet rib 213, or the pin 2133.

The sealing surface 296 is laterally delimited by a deflection rib 297, which is between the pin 2133 and the continuation rib 2174 of the inner foot rib 217 is located. The Continuation rib 2174 extends there in the area of the inner Top fold flank 313.

The deflection rib 297 has at its transition to the outer top fold rib 213, or to the peg located there 2133, via a longitudinal pin 2134. This is as high as possible designed, in the present case as high as the pin 2133.

The pin can be made so long in the direction of the longitudinal axis of the brick like the bend 4251 explained later an inner rebate rib 425 is offset towards the brick base. The longitudinal pin 2134 can be made wider than that Connecting rib 297.

The level of the sealing surface 296 is compared to the level of the Top rabbet groove 216 raised so that the lowering 2132 and 2172 of the outer head fold rib 213, or the inner Head fold rib 217 are covered in the covering. The side fold part 5 includes the outer side fold rib already mentioned 513, the side groove 514 and the inner side rib 515. Both side fold ribs are in the direction of the head side fold 28 lowered and partly go to the same level the outer head fold, partly fit a jump in height the inner head fold rib 217 over. The side groove 514 is in The area of the top side fold corner 28 is also lowered.

The inner side fold rib 515 rises from the inner top fold rib 217 slightly towards the base of the brick, until it reaches the full height that it has to the foot side Maintains end in the area of a water switch 531. The water switch is slightly above the level of 6 and drains on this.

The inner side seam rib 515 is kept slightly lower than the outer side fold rib 513. the outer side fold rib 513 rises from the depression analogously to the inner side rebate rib 515 2132 towards the base of the brick until it has reached its full height.

It maintains this height up to its foot end in the area a hook-shaped bend facing the brick center field 5135. This bend is a receiving surface on the five sides 5137 upstream, at the same height as that Midfield is 6. On this recording surface lies with the Covering an offset 4251 of an intermediate one to be explained False rib 425.

The side groove 514 rises slightly from the fold line 5141 to another crease line 5142, which is approximately in the range the water switch 531 lies. By the length of the side groove between the fold lines 5141 and 5142 is the desired light one Rise of only 5 °.

Between the water switch 531 and the foot-shaped hook-shaped Bend 5135 is obliquely to this another hook-shaped Bend 5134 is present, which is between the brick center field 6 and the outer side fold rib 513 extends.

The bend 5134 runs - as can be seen from FIG. 1 - at an angle alpha of approximately 45 ° downwards to the right towards the center tile area around the side groove 514 To drain as far as possible in front of the foot side fold 48 and to prevent the water collected there from falling into the foot gusset 48 penetrates.

For this purpose, the kink 5134 can also have an extension rib 5151 be provided, which are in alignment with the inner Side rebate rib 515 extends from the free, midfield side End of the bend 5134 extends in the direction of the brick base 4. The extension rib ends primarily with leave a water opening 59 before the bend 5135. Die von the two bends, from the outer side fold rib 513 and the inner extension rib 5151 enclosed area 5136 can be inclined towards the brick center field 6 to ensure rapid drainage there as well.

When covering 5136 in the enclosed area Rip in the 3252 rib, which can be used as an extension of the middle top fold rib 325 and before the bend 4251 the inner foot rib 425 is arranged. The rib is in its dimension so that it covers the The interior of area 5136 is largely filled, but sufficient There is free space to the surrounding ribs.

The kink 5135 is preceded by the receiving surface 5137 bounded by a hump 58 in the direction of the central brick field becomes. The hump closes this surface opposite the contact surface 613 and thus prevents the penetration of Water that comes from the side folds, or from the Surface 5136 comes from.

To accelerate the water drainage, the one facing the brick head Flank of the hump analogous to the oblique position the bend 5134, or also at an angle beta inclined inner flank of the bend 5135, inclined facing down right.

The bends 5134 and 5135 are the same height as the outer one Side fold rib 513, but the cusp 58 is mainly lower held.

The brick center panel 6 is in the area of the foot side fold 48 carried out at the same height up to the outer edge of the brick and forms in the area of a rectangular foot gusset cutout 486 a midfield plateau 613, which is on the is at the same level as the receiving surface 5137.

The sole footprint cutout 486 is therefore from two sides surrounded by flat surfaces, namely by the contact surface 613 in Direction to the midfield and from the receiving area 5137 in Direction towards the side fold.

When covering, a contact surface 3111 of the outer one is laid Cover flank on the support surface 613.

The central tile field 6 essentially consists of one level, which extends from the interlocking of the head to the end on the eaves side of the brick and to the left and right of the side interlocking 5 or is limited by the top fold part 3. At the The end at the foot end is rounded off into the course of the cleaning ridge about.

Now to the back of the brick and to Figure 2.

In the top rebate part 2 there are two transversal suspension lugs 221, which has somewhat lower stacking bumps 222 with a top edge of the brick edge.

The cover fold part 3 comprises an outer cover fold flank 311 which has a lower contact surface 3111 with which the overlapping one Brick in the middle of the covering brick lies on. At the transition from the support surface 3111 to the rest Cover fold contains a groove 3114 in the cover fold flank essentially from the top deck corner cutout 29 to one Recess 4252 of the inner foot rib 425 extends. For An outer cover groove follows in the middle in the upper half of the tile 324, a middle cover fold rib 325, an inner cover fold groove 328 and an inner top seam rib 327.

The groove 3114 is head-end of a kink 3115 of the outer Cover fold flank 311 limited.

The middle top fold rib 325 has in the head area a thickening 333. The inner top fold rib 327 ends on the foot side at an offset 4251 of the inner foot rib 425. Before reaching this rib, the inner top fold rib tapers 327 to a narrow, sword-like extension 3271, which is also 327 in height compared to the rest of the rib is reduced.

This extension has decisive advantages for drainage the bottom of the brick. Possible condensation water, or spray water that has entered collects on the underside of the top seam rib 327 and runs in Direction on the foot area to the bend 4251, whereupon it placed in the interlocking of the roof of the covered secondary tile becomes.

The middle cover fold rib 325 ends on the foot side in an oblique bend 3251 which is directed towards the outer cover fold flank 311. Water collected there runs along the groove 3114 to the hump 58 on the top of the brick, where it is discharged to the middle field.
The recess 4252 of the inner foot rib 425 serves to receive the cusp 58 when covered.

The inner cover rib 327 is higher than the middle cover rib 325 and at its foot end is about that Level of this rib lowered.

In the area between the outer foot rib 423 and the Ribbed piece 4251 puts the outer cover seam flank 311 in its area 3111 on the support surface 613 of the undercover Brick on.

The foot fold part 4 has an outer foot fold rib 423 and one middle foot rib 425, between which there is a foot groove 424 is located. The outer foot rib 423 is in the area of the brick center field expanded and into the two parallel ones Branches 4231 split, between which a groove 4232 lies.

The outer foot rib 423, or its branches 4231, ends in the area of the foot gusset cutout 486. Your end is designed so that it covers the profile when covering following the outer cover seam flank 311 upwards to the corner cutout have moved.

The middle foot rib 425 has in the area of the inner Top fold flank 313 has an offset 4251 which is offset on the foot side is. From the edge of the corner cut running parallel to the foot fold part 4 486 is followed by a rib piece 4861, which attached approximately in an extension of the inner foot rib 425 is. Following the rib section 4861 there is a lower one laid cavity 488, the dimensions of which are essentially corresponds to the surface 296 of the top of the brick.

The rib piece 4861 overlaps somewhat with the side fold side End of the inner foot rib 425 and represents a slightly deeper one Extension of the same in the direction of the outer edge of the brick The rib piece ends at the outer edge of the brick and forms an edging of the foot gusset corner cutout 486. At the same time, it forms a limitation of the as hollowing out trained sealing surface 488.

Rib 4861 is about half the inner foot rib 425.

The side fold part 5 has several support humps on its underside 5132. Is in flight with these humps the hollow 488 is a stacked bump shaped like a parallelogram 5131. It is connected to one side Longitudinal bar 57, which extends from the cavity 488 along the edge of the brick up to the top end of the tile at the top side corner 28 extends.

On the other hand, the stacking bump 5131 has a condensed water fin 572 connected along the cavity 488 to the inner one False rib 425 leads. The excavation is thus from the stacking hump 5131, from the condensation water rib 628, from a remainder the inner foot rib 425 and from the rib piece 4861 surrounded on three sides.

The longitudinal bar 57, the stack hump 5131 and the condensation water rib 628 are equal in the present case, so that they are flush merge.

Figure 3 shows a cross section through the four-tile corner. Sliced are bricks I to IV.

Of brick I, the outer side rebate rib 513 is in its lowered Part cut. The side groove 514 follows. As Line of sight you can still see the lowered part 2132 of the outer Head fold rib 213.

In brick II, the following is cut from left to right: the top fold groove 216, the rise to the top fold part 3, a horizontal level and the deflector rib 297, attached to it the sealing surface 296. Located on its underside the inner top fold rib 327, the thickening 333 of the middle Top fold rib. The sealing surface 296 lies on the upper side and the cross rib 298.

Brick III is cut in the foot groove 424. You can see the inner foot rib 425. In the corner cutout is the outer one Flank of the lower hook-shaped bend 5135 can be seen. Dashed are the outer side fold rib 513 and the surface 5136 between the hook-shaped bends 5134 and 5135, as well as Höcker 58.

On brick IV, the continuation rib 2174 is at the top see the notches 2115. The overflow head follows to the left 2171. To the left of the overflow head 2171 is the inner one Head fold rib 217 continues.

At the back of brick IV is the inner foot rib 425 can be seen together with their 4251 offset. From the cut also goes the sword-like extension 3271 of the inner Top fold rib 327, which is in front of the covering the pin 2133 and its extension 2134 of the covered Brick II lays.

In the following, the phantom drawings 5 to 9 are considered, in different combinations they show the intervention of the different Brick when covering.

Figure 5 shows how brick II the neighboring Tile I covered in the area of the head folds. It is recognizable, how the outer cover seam flank 311 of brick II before the taper of the 2176 extension of the inner head rebate rib of the brick I lays. At the same time you can see how that Cross rib 298 of brick II increases but in extension the top rebate rib 213 of the brick I creates.

Brick III lays down with the dash-dotted bottom view on bricks I and II. His rib section 4861 is located thereby abuts on the sealing surface 296 of the brick II forms a sliding shoe, as it were, on this sealing surface to take advantage of headroom on the one hand from the cross rib 298 to be moved to the continuation rib 2174 on the other hand can. In Figure 5 it is shown in a middle position.

This intervention is somewhat clearer from FIG. 7. Out of it it can also be seen that the cavity 488 roughly corresponds to the same length and width dimensions as the sealing surface 296 Has. This is due to the mutual displaceability.

It can be seen in particular from FIG. 5 that approximately on the underside of the brick of the brick III adhering to the longitudinal bar 57 Spray water due to the hydrophilic properties of the clay brick along the bump 5131 and the condensation water rib 628 over the top rabbet rib 213 of the brick I in whose top rebate groove 216 is entered because the water drops there fall off in the area of the inner foot rib 425 and in the top rebate groove 216 arrive.

FIG. 6 shows the engagement of the underside of brick II in the top of the brick I in the area of the head folds. The outer side rebate rib 513 of the brick I lies down in the inner side groove 328 of brick II, analog applies to the inner side rebate rib 515 and the outer side rebate groove 324.

The thickening 333 of the middle top fold rib 325 comes in the Top fold groove 216 of the brick I to lie and forms one there Sliding pad, but without the lateral drainage of the top rebate to hinder via the side groove.

Figure 8 shows the overlay of the brick III by the Brick IV in the foot area. The side fold of the brick III is overlapped by the interlocking of the brick IV. In the Water switch 531 sets off the bend 3251 of the middle one Cover seam rib 325. The same happens with the lowered surface 5136, because the rib section 3252 lies there. The inner one Cover seam rib 327 extends with its sword-like extension 3271 along the outer side fold rib 513 and enables here, too, analogous to the above statements Transfer any spray drops adhering to it into the head fold of the covered, lower sequential tile that is in this Figure is however not shown.

The bend 4251 of the inner foot rib 425 of the brick IV lies on the receiving surface 5137 of brick III. Of the Hump 58 lies in the recess 4252 of this inner foot rib. The groove 3144 opens at the recess. On the contact surface 613 the brick IV with the supporting surface is laid 3111 of the outer cover seam flank.

FIG. 9 shows the same section of the underside of the brick of Figure 8, but this time in engagement with the one covered by it lower secondary tile II. The sword-like extension 3271 of inner top seam rib 327 is along pin 2133 and the extension pin 2134 up to the area of the sealing surface 296 managed. One recognizes the possibility of moving the inner and outer foot ribs 425 and 423 of brick IV opposite the inner head fold rib 217 and the continuation rib 2174. The offset 4251 leads to a corresponding Shift freely at the end of the head rebate rib on the cover seam side 217 over. The same applies to the end of the cover seam two branches 4231 of the outer foot rib 423 of the brick IV. They can be freely at the inner end of the continuation rib 2174 of brick II push past.

FIG. 4 shows two stacked, inventive Flat roof tiles with their locking engagement in the area of Side folds. The support humps 5132 of the covering brick engage in the side groove 514 of the covered tile and lock the two bricks to the side. Only the stacking hump 222 and at the foot end of the Bricks of the stacking humps 5131 form the desired support.

Figures 10 to 13 relate to another embodiment. Corresponding parts have the same reference numerals as in the first embodiment. Basically the same statements apply to the second embodiment like for the first one. As far as there are deviations listed below.

The side fold 5 of the flat roof tile has on the foot side End over two bends 5135 and 5134, which turn away from the first embodiment at a right angle to the outer edge of the brick are guided in the direction of the central tile field 6. The depression 5136 is thus surrounded by the bends in a U-shape and is open to the central brick field. This is analogous to this configuration of the side fold Decking changed.

The middle top fold rib 325 ends in one at the foot side Bend 3251, which is directed to the outside of the brick. In the She covers herself in the water switch 531.

The inner top fold rib 328 ends deeper on the foot side than that middle and there opens into a transverse rib 427.

This is by an amount from the contact surface 3111 of the outer Cover fold flank 311 lowered, which corresponds to the height that area 5136 is raised above the midfield.

The transverse rib 427 has an inner end at its foot end Branch 4273, which extends from a notch 4271 to the inner one Cover fold flank 313 extends.

The branch is approximately level with an outer branch 4272, the is beyond the notch 4271 and up to outer top fold flank 311 extends.

The bend 3251 directed towards the outside of the brick creates together with the outer branch 4272 a free space in which insert 5134 of the covering.

The sealing surface of the second embodiment is both on the head side End of the brick as well as towards the top rabbet groove 216 free of ribs. It already corresponds in the with the surface 488 on the underside of the brick for the purpose of sealing the top deck fold.

FIG. 12 shows the engagement of the outer branch 4272 of the transverse rib 427 in the area 5136. The length of this area corresponds approximately the thickness of the outer branch 4272 plus a slight one Compensation for any shrinkage differences.

The cross rib 427 creates an amazingly simple manner additional sealing at the foot of the side folds in front of the water point 531.

Figure 13 shows the same area, but in a section parallel to the rafter direction.

The outer branch 4272 protrudes between the bends 5134 and 5135 the rib, the water switch 531 is covered by this, so that the collected water soothes the brick center field can drain off.

Claims (44)

1. Flat interlocking roofing tile having interlocking head rebate, side rebate, foot rebate and cover rebate areas, which, when the tiles are laid in position, form a horizontal head and side expansion joint and bring about multiple overlapping, and having a cutout in the interlocking foot/side corner and a single cutout and a plateau in the interlocking head/cover corner, characterized in that the interlocking foot/side corner (48) has just a single corner cutout (486), which is assigned, over its entire width, a receiving surface (5137) which, when the roofing is placed in position, is overlapped widthwise by a section (4251) which belongs to the inner interlocking foot rib (425) and is located on the underside of the interlocking cover part (3).
2. Flat interlocking roofing tile, according to Claim 1, in the case of which the underside of an outer interlocking cover flank on the rear side of the tile opens out into an outer interlocking foot rib in planar fashion, characterized in that the inner interlocking foot rib (425) extends as far as the outer interlocking cover flank (311) and, when the roofing is placed in position, rests on the receiving surface (5137) by way of a section (4251) and the inner interlocking foot rib (425) opens out flush into the bearing surface (3111) of the outer interlocking cover flank (311), with the result that the latter and the interlocking foot rib form a single plane.
3. Flat interlocking roofing tile, according to Claim 1 or 2, which has a rectangular outline and in the case of which respectively one outer, or inner, interlocking head rib merges, without interruption, into an outer, or inner, interlocking side rib, and in the case of which the interlocking side rebate area has an outer interlocking side rib (513), an interlocking side groove (514) and an inner interlocking side rib (515) and, as a whole, is overlapped by the interlocking cover part, characterized in that the receiving surface (5137) extends over the entire width of the interlocking side rebate area (5), and adjacent to said receiving surface, in the interlocking foot/side corner cutout (48), is a bearing surface (613) which runs in the longitudinal direction of the tile and is planar in relation to said interlocking side rebate area and/or to the central area (6).
4. Flat interlocking roofing tile according to one of the preceding claims, having an interlocking head rebate area (2) which comprises an outer interlocking head rib (213), an interlocking head groove (216) and an inner interlocking head rib (217), characterized in that arranged on the rear side of the tile, in the interlocking foot/side corner cutout (486), is a surface (488) which is of the same width as the interlocking side part (5) and of which the length (L) corresponds at least to the width (B) of the outer interlocking head rib (213) and of the interlocking head groove (216), it being the case that, over its entire length, the surface is bounded by a lateral condensed-water rib (628) which opens out into the inner interlocking foot rib (425).
5. Flat interlocking roofing tile according to one of the preceding claims, characterized in that the interlocking head/cover corner cutout (29) is adjoined by a surface (296) of which the length and width correspond to the surface (488) on the rear side of the tile.
6. Flat interlocking roofing tile, according to one of the preceding claims, characterized in that the outer interlocking side rib (513) is routed to the receiving surface (5137) and, before the latter, merges into a hook-shaped inflected portion (5135) which is of the same height and is directed onto the central area (6) of the tile.
7. Flat interlocking roofing tile according to one of the preceding claims, characterized in that between the interlocking cover part (3) and the interlocking foot/side corner cutout (486), the outer interlocking foot rib (423) is divided up into two parallel branches (4231), between which a groove (4232) is located, and, in the region of the interlocking cover part (3), the inner interlocking foot rib (425) has an angled portion (4251) and is routed in a flush manner, and at the same height, from the interlocking foot/side corner (48) to the outer interlocking cover flank (311).
8. Flat interlocking roofing tile according to one of the preceding claims, characterized in that the inner interlocking foot rib (425) opens out flush, and in planar fashion, into a bearing surface (3111) of the outer interlocking cover flank (311).
9. Flat interlocking roofing tile according to one of the preceding claims, characterized in that, in front of the interlocking cover part (3), the inner interlocking head rib (217) has a hook-shaped deflected portion (2173) which is directed onto the central area (6) of the tile and is adjoined in the region of the interlocking cover part (3), an overflow (2171) which drains the interlocking head groove (216) and forms a free connection in relation to the central area of the tile being provided in the process, by a continuation rib (2174), which is offset some way towards the foot side in relation to the interlocking head rib.
10. Flat interlocking roofing tile having a water deflector at the foot-side end of the interlocking side groove according to one of the preceding claims, characterized in that provided between the water deflector (531) and the foot-side, first hook-shaped inflected portion (5135), is a second hook-shaped inflected portion (5134), which, along with the first and foot-side end region of the outer interlocking side rib (513), forms a U-profile and encloses a sunken surface (5136).
11. Flat interlocking roofing tile according to one of the preceding claims, characterized in that the surface (5136) is at the same level as the water deflector (531).
12. Flat interlocking roofing tile according to one of the preceding claims, characterized in that the outer interlocking head rib (213) runs, without interruption, from the interlocking head/side corner (28) to a stub (2133) located in front of the sealing surface (296) of the interlocking head/cover corner (92), and provided in extension of said rib is a transverse rib (298) which terminates the sealing surface (296) on the head side and extends, over the entire width of said sealing surface, as far as the interlocking head/cover corner (29), and in that, when the tiles are placed in position, the transverse rib (298) engages in the sealing surface (488).
13. Flat interlocking roofing tile according to one of the preceding claims, characterized in that the sealing surface (296) is bounded laterally by a diverting rib (297) which extends, in the longitudinal direction of the tile, from the stub (2133) as far as the inner interlocking head rib (217), or as far as the hook-shaped continuation rib (2174) which belongs to said interlocking head rib and extends over the interlocking cover part (3).
14. Flat interlocking roofing tile according to one of the preceding claims, characterized in that, on the foot side, the sealing surface (488) is bounded by a rib segment (4861) which forms the termination in relation to the interlocking foot/side corner cutout (486), and the sealing surface (488) together with the condensed-water rib (628), which encloses said sealing surface approximately in the form of an L, form a hollow which is closed off in the direction of the central area of the tile.
15. Flat interlocking roofing tile according to one of the preceding claims, characterized in that the rib segment (4861) is arranged approximately in extension of an inner interlocking foot rib (425) and is of a lower height than the latter and, when the roofing is placed in position, the underside of the rib segment (4861) rests on the sealing surface (296) and the transverse rib (298) rests on the sealing surface (488).
16. Flat interlocking roofing tile according to one of the preceding claims, characterized in that the free space of the sealing surfaces (296) and (488) is of such a magnitude as to correspond to the desired displacement region, and, when the tiles are in the drawn-out state, that flank of the rib segment (4861) which is directed towards the head part butts against that flank of the transverse rib (298) which is directed towards the foot part, and in that, when the tiles are in the pushed-together state, that flank of the rib segment (4861) which is directed towards the interlocking foot/side corner cutout (486) butts against the continuation rib (2174) of the tile located beneath.
17. Flat interlocking roofing tile according to one of the preceding claims, characterized in that the receiving surface (5137) is assigned a hump (58) and, when the roofing is placed in position, both are overlapped by the section (4251) of the inner interlocking foot rib (425), said section being located on the underside of the interlocking cover part (3) and, at the transition to the outer interlocking cover flank (311), having a recess (4252) for receiving the hump (58).
18. Flat interlocking roofing tile according to one cf the preceding claims, characterized in that the hump (58) is arranged in front of the free end of the inflected portion (5135) and extends from this end as far as the corner of the interlocking foot/side corner cutout (486), it being the case that said hump extends over the entire depth of the receiving surface (5137) and closes off said surface in the direction of the central area of the tile and, heightwise, is at most half the height of the outer interlocking side rib (513), or of the inflected portion (5135).
19. Flat interlocking roofing tile according to one of the preceding claims, characterized in that provided on the inside of the interlocking cover flank (311) is a groove (3114) which extends from the interlocking head/cover corner (29) as far as the interlocking foot/cover corner (49) and is located in a single plane with the recess (4252).
20. Flat interlocking roofing tile according to one of the preceding claims, characterized in that the groove (3114) extends into the vicinity of the outer border of the interlocking head/cover corner cutout (29), and the bearing surface (3111) of the outer interlocking cover rib (311) forms a hook-shaped inflected portion (3115) there as a groove termination.
21. Flat interlocking roofing tile according to one of the preceding claims, characterized in that, in order to form an oblique lead-off means within the water deflector (531), the second hook-shaped inflected portion (5134) runs at an acute lead-off angle (α) of mainly 35° to 65°, in particular 45°, in the direction of the central area (6) of the tile from the outer interlocking side rib (513).
22. Flat interlocking roofing tile according to one of the preceding claims, characterized in that the second inflected portion (5134) has an inner extension rib (5151) which is aligned parallel to the outer interlocking side rib (513), and the inflected portions (5134, 5135) and/or the extension rib (5151) are of the same height as the adjacent interlocking side rib (513).
23. Flat interlocking roofing tile according to one of the preceding claims, characterized in that the extension rib (5151) extends to just in front of the first inflected portion (5135) and terminates in front of a water opening (59) of the sunken surface (5136), which is at a higher level than the central area (6) and, in particular, is at the same level as the water deflector (531).
24. Flat interlocking roofing tile according to one of the preceding claims, characterized in that provided on the rear side of the tile, along the entire length of the interlocking side part (5), is a longitudinal strip (57) which is arranged on the outer tile border of the interlocking side part (5) and extends - preferably at the same height - from the interlocking head/side corner (28) as far as the stacking hump (5131) in the interlocking foot/side corner (48), it being the case that the condensed-water rib (628) extends from said stacking hump to the inner interlocking foot rib (425).
25. Flat interlocking roofing tile according to one of the preceding claims, characterized in that at the foot-side end, a rib segment (3252) is arranged in front of the central interlocking cover rib (325) and, when the roofing is placed in position, engages in the sunken surface (5136).
26. Flat interlocking roofing tile according to one of the preceding claims, characterized in that the outer flanks of the outer and inner interlocking side ribs (513, 515) are spaced apart from one another by a smaller distance than the inner flanks of the interlocking cover part and the inner interlocking cover rib (328), with the result that, when the roofing is placed in position, the central interlocking cover rib (325) does not come into contact with the inner flanks of the inner interlocking side rib (513) or the outer interlocking side rib (515) either when the tiles are in the drawn-out state or in the pushed-together state.
27. Flat interlocking roofing tile according to one of the preceding claims, characterized in that, at its foot-side end, the inner interlocking cover rib (328) opens out into a tapered and lowered extension rib (3271), which is routed to the inner interlocking foot rib (425), or to the angled portion (4251) thereof.
28. Flat interlocking roofing tile according to one of the preceding claims, characterized in that the inner interlocking head rib (217) and the continuation rib (2174) overlap in the interlocking-cover-side end region of the central area (6) and form an overflow (2171) there, for the interlocking head rebate area, with the opening direction parallel to the transverse axis of the tile.
29. Flat interlocking roofing tile according to one of the preceding claims, characterized in that the depth of the overflow head (2171) is dimensioned such that a planar connection forms between the interlocking head groove (216) and the central area (6).
30. Flat interlocking roofing tile according to one of the preceding claims, characterized in that the continuation rib (2174) is arranged in front of the inner interlocking head rib (217) in relation to the central area of the tile and, in the overlapping region, one of the two ribs, in particular the continuation rib (2174), is notched in order to form a sufficiently wide overflow, it being the case that, in the region of the central area of the tile, the continuation rib (2174) is of the same height as the inner interlocking head rib (217).
31. Flat interlocking roofing tile according to one of the preceding claims, characterized in that, in the region of the curvature of the interlocking cover part (3), the continuation rib (2174) is reduced in height and, in crenellated fashion, has two notched portions (2175) into which, when the tiles are stacked horizontally, in each case the head-side ends of the two interlocking cover ribs (325 and 327) are fitted.
32. Flat interlocking roofing tile according to one of the preceding claims, characterized in that the inner interlocking head rib, at its end which is directed towards the interlocking side part (5) is tapered in terms of thickness and, in the region of the tapered portion, has a locking stud (2176) which, when the roofing is placed in position, protects the interlocking head part (2) against rain or the like being blown in and in front of which the outer interlocking cover flank (311) of the overlapping tile is fitted.
33. Flat interlocking roofing tile according to one of the preceding claims, characterized in that, at its transition to the stub (2133), the diverting rib (297) has a longitudinal stub (2134) which is of the same height as the stub (2133), and the longitudinal stub (2134) extends in the direction of the longitudinal axis of the tile to the same extent as the angled portion (4251) of an inner interlocking foot rib (425) is offset in the direction of the tile foot (4).
34. Flat interlocking roofing tile according to one of the preceding claims, characterized in that the second hook-shaped inflected portion (5134) runs parallel to the first inflected portion (5135), and the sunken surface (5136) is open towards the central area (6) of the tile and is at a higher level than the same.
35. Flat interlocking roofing tile according to one of the preceding claims, characterized in that the inflected portions (5134, 5135) are of the same height as the adjacent interlocking side rib (513).
36. Flat interlocking roofing tile according to one of the preceding claims, characterized in that on the rear side of the tile, in the region of the interlocking cover part (3) and above the interlocking foot rebate area (4), a transverse rib (427) is arranged parallel to the interlocking foot rebate area, and, with the exception of a notched portion (4271), extends from an inner flank (313) of the interlocking cover part as far as the outer flank (311) of the same, it being the case that, when the roofing is placed in position, the interlocking side rib (513) is positioned in said notched portion (4271) and that part of the transverse rib (427) which is located in the region of the outer interlocking cover flank (311) rests on the sunken surface (5136).
37. Flat interlocking roofing tile according to one of the preceding claims, characterized in that that part of the transverse rib (427) which is located in the region of the outer interlocking cover flank (311) is sunken in relation to a bearing (3111) of the interlocking cover part to the same extent as the surface (5136) is raised above the central area.
38. Flat interlocking roofing tile according to one of the preceding claims, characterized in that, on the foot side, an inner interlocking cover rib (327) adjoins the transverse rib (427), which is sunken in relation to the bearing surface (3111) of the outer interlocking cover flank (311) by the amount which corresponds to the height by which the surface (5136) is raised above the central area.
39. Flat interlocking roofing tile according to one of the preceding claims, characterized in that, at its foot-side end, the transverse rib (427) has an inner branch (4273) which extends from the notched portion (4271) as far as the inner interlocking cover flank (313) and is approximately at the same level as an outer branch (4232), which is located on the far side of the notched portion (4271) and extends to the outer interlocking cover flank (311).
40. Flat interlocking roofing tile according to one of the preceding claims, characterized in that, at its foot-side end, a central interlocking cover rib (325) has a hook-shaped inflected portion (3251) which is directed towards the outside of the tile and, together with the outer branch (4272), forms a free space in which, when the roofing is placed in position, the inflected portion (5134) is positioned.
41. Flat interlocking roofing tile according to one of the preceding claims, characterized in that arranged on the rear side of the tile, starting from the interlocking head/side corner (28), are bearing humps (5132) which, when the tiles are stacked horizontally, are positioned in the interlocking side groove (514) of the tile located therebeneath.
42. Flat interlocking roofing tile according to one of the preceding claims, characterized in that located in the region of the interlocking foot/side corner (48) is a stacking hump (5131) which is aligned with the bearing humps (5132) and, when the tiles are stacked horizontally, comes to rest on the hook-shaped inflected portion (5134) of the tile located therebeneath.
43. Flat interlocking roofing tile according to one of the preceding claims, characterized in that, at the head-side end of the rear side of the tile, a bearing strip (56) is arranged in the region of the interlocking side part (5).
44. Flat interlocking roofing tile according to one of the preceding claims, characterized in that the interlocking side rebate area slopes up slightly from a line of inflection (5141), which is located in the region of the interlocking head/side corner (28), as far as the region of the water deflector (531), and the slope terminates at a line of inflection (5142), which is located in the region of the water deflector (531).

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