DK9300538U3 - Roofing for low slope roofing - Google Patents

Description

DK 93 00538 U3

The production relates to a roof covering for placement on low-pitched roofs, e.g. on a concrete deck or on an insulating layer thereon, and wherein the roof covering perceives a number of roof covering elements which are adjacent to each other edge to edge.

It has long been known to make roofing on flat roof surfaces by laying roofing paper in rolls on the roofing surface, making sure that there was some overlap ("overlay") between the roofing board paths. However, the orientation of the roofing rollers on the roofing surface is difficult, since the roll corresponding to the individual roofing sheet web had to be rolled out first, so that the correct position of the web was ensured, after which the web was rolled. Then the track was rolled out again, "welding" it with the neighboring track. This roofing has the disadvantage that it takes a lot of time to install it.

The purpose of the production is to provide a roofing of the kind mentioned above which allows the laying time to be reduced very substantially, in some cases to 40% of the previous laying time.

The roofing according to the invention is new in that the individual roofing element is substantially rectangular and made up of at least one layer of roofing paper, and that the length of the individual roofing element is approx. 1.5-3.0 times the width of the latter, and that the lines along which the roofing elements abut each other are covered by two sets of adhesive, intersecting roofing strips, both sets of roofing strips having a length many times the length or width of the individual roofing element. It has been found that this roofing can be applied in approx. 40% of the laying time the known roofing requires. This is because the installer does not have to pack large roofing rolls or tracks. Instead, he has to deal with some rather small - and consequently rather light - roofing elements. These are placed on the roof surface so that they form a large paneer grid, and then pushed together so that they lie edge to edge. Then, stick the first set of roofing paper strips. The single strip then covers the edge zone of many adjacent roof covering elements. Then, the second set of roofing paper strips are adhered so that they extend substantially perpendicular to the first set of roofing paper strips and cross over this. - This roofing is suitable for new low-pitched roofs as well as for roofing-coated low-pitched roofs, where the roofing roofing needs to be renovated.

According to the invention, the individual roofing element's layer of roofing board, e.g. be of overboard, while there is a bottom layer beneath this layer 10, e.g. of sub-cardboard or filler material, such as roofing cardboard, glass flakes or similar crumbs, the dimensions of which the overlap layer may be slightly larger than the dimensions of the bottom layer, so that a circumferential edge zone of the overlap - when the roofing element is to be mounted on the roof surface - can be pressed down to level with the bottom layer. Thus, when the two sets of roofing cardboard strips are adhered, the upper surface of these strips will substantially align with the upper face of the inner portion of the overboard board. This ensures that the water buildup in front of the strips is avoided and that the roof covering has an attractive appearance.

In addition, according to the invention, the individual roofing strip may be made up of a half layer of upper board and a half layer of lower board as well as a thin layer of adhesive disposed therebetween. This structure of the individual roofing strip has proved particularly suitable.

25 According to the generation between the layer of upper board and the bottom layer of the individual roof covering element, there can be found an intermediate roof cardboard layer with a circumferential edge zone which is wider than the width of the overboard cardboard zone and which, when the roofing element is to be mounted on the roof surface, can be pressed down to 30 levels. with the bottom layer. Hereby it is obtained that along the line where two adjacent roofing elements collide, a "stairway ditch" will be formed. For the purpose of bonding two neighboring roofing elements, this trench must then be filled in by adhering to suitably designed roofing cardboard strips 3 DK 93 00538 U3.

In addition, according to the manufacture on top of the first and second set of roofing paper strips having a thickness corresponding to the thickness of the upper layer of roofing paper, a first and second set of additional roofing paper strips having a thickness substantially corresponding to the thickness of the bottom layer can be adhered respectively. Hereby, it is achieved that the transition between two consecutive roofing elements will be virtually invisible, with the upper side of the upper roofing strip substantially aligning with the middle portion 10 of the upper side of the overlaying layer.

According to the invention, the bottom layer may consist of shredded roofing paper residues having a grain size of 2-6 mm, which roofing material remains adhered to the underside of the overlying roofing board. This results in the roofing being very environmentally friendly in manufacturing, as old roofing paper residues can now be recovered. This is especially relevant when restoring roofing tiles.

In addition, according to the invention, the edge zone of the layer of overboard can have a width x corresponding to half the width of the roofing paper strips. This ensures that the sealing ability of the roofing strips 20 is particularly good.

In addition, according to the invention, the middle roof paper layer may have a width y, which is determined by the condition x <y <3x, where x is the width of the edge zone of the layer of overboard. In practice, these dimensions have proved particularly useful.

Furthermore, according to the invention, the width w of the individual roofing strip in the additional first and second sets of roofing strips can be 2y, the width of each roofing strip in the underlying first and second set of roofing strips being 2y minus 2x. Thereby the aforementioned trench is very efficiently filled.

Still, according to the invention, the length of the roof covering element may be 1.6-2.5, preferably 1.8-2.4 times the width of the roofing element, since these proportions have proved particularly convenient.

In addition, according to the production, the individual roof covering element can have the dimensions 120 x 240 cm. Thereby a roof covering element is obtained which is not overweight and which is therefore easy to handle.

Finally, according to the invention, a suitable layer may be found underneath the individual roofing element's layer of roofing board, e.g. of subfabric or filler material, such as roofing paper crumbs or glass webs, having length and width dimensions slightly larger than the overlying roofing paper layer, wherein the first and second sets of roofing paper strips can fill the "trench" between adjacent roofing elements, while the width of the individual strip in said first 15 and second set of additional roofing strips may be wider end said "trench".

The invention is explained below with reference to the drawing, in which fig. 1 shows a roof covering consisting of a number of adjacent roof covering elements; FIG. 2 is a part of a first embodiment of a roof covering element according to the invention, with a roofing strip being applied; FIG. 3 is a part of another embodiment of the roof covering 25 according to the invention, with three layers of material, the whole in cross section; FIG. 4 shows a part of a roofing paper strip, consisting of a half-thickness overboard plus a layer of adhesive plus a layer of half thickness, - all in cross section, and 5 FIG. 93 00538 U3 fig. 5 is a cross-sectional view of a further embodiment of the roofing.

The FIG. 1, which is located directly on a concrete deck 2, consists of a number of roofing elements 3, which are adjacent to each other edge to edge. The individual roof covering element is generally rectangular and consists of at least one layer of roofing paper 4, see fig. 2. The length a of the individual roof covering element 3 is approx. 1.5-3.0 times the width of the latter b. The lines along which the roof covering elements abut each other are covered by two sets of adhesive roofing strips 6, 7. One set of roofing strips 6 has a length 1 which is many times the length a of the individual roof covering element, while the second set of roofing strips 7 has at least a length substantially equal to the width b, but will often have a length several times b. In the former case, the two sets of strips will lie in the same plane; in the second case - the roofing strips will cross over each other. The advantage of the roofing according to the invention is that it can be laid considerably faster than the traditional roofing board coverings where the roofing board is laid out in long courses.

The individual roof covering element's layer of roofing board may be of upper board 4. Below this there may be a bottom layer 5, e.g. of sub-cardboard or filler material. The latter can e.g. be roofing paper mold, glass tile or similar. The roofing paper (shredded roofing paper) can have a grain size of approx. 2-6 mm. The crumb will be housed in an adhesive which can adhere to the underside of the overlying roofing paper layer 4. The dimensions of the overcoat layer 5 may be slightly larger than the dimensions of the bottom layer 5, so that a circumferential edge zone 4 'is formed on the overboard. When the roof covering element is to be mounted on the roof surface, the edge zone 4 'can then be pressed down in level with the underlying layer 5, as shown in FIG. 2. The meaning that the edge zone 4 'can be pressed down at the level of the underlying layer 5 is that a "ditch" is formed above the edge zone 4 in which one or the other set of roofing paper strips can be recessed, so that they 6 DK 93 00538 U3 causes cracking.

With regard to FIG. 2, it is noted that the bottom layer 5 need not necessarily be present. If the bottom layer is omitted, the individual roofing layer consists of just one layer of roofing paper 4. The place where two neighboring roofing elements adjoin each other is also covered in this case by the roofing strip 6, which, however, now protrudes over the upper surface of the roofing elements, adjoining roofing elements no longer establish any "ditch".

The individual roofing strip 6 may, as shown, be composed of a layer of half-thickness overcoat 16 and a layer of half-thickness sub-board 17 as well as a thin adhesive layer 18 disposed therebetween. As shown in FIG. 3, there may be provided between the layer 4 of upper board and the bottom layer 5 of the individual roofing element 10, with a circumferential edge zone 10 ', which is wider than the width x of the edge zone 4' of the roofing layer 4, and which reaches the roofing element. to be mounted on the roof surface, can be pressed down to level with the bottom layer 5.

On top. the first and second sets of roofing strips 6, 7, which have a thickness t corresponding to the thickness of the upper layer of roofing board 4, may be adhered to a further set of roofing strips 26 with a thickness u substantially corresponding to the thickness t of the bottom layer 5.

As shown in FIG. 2, the edge zone 4 'may have a width x corresponding to half the width z of the roofing paper strips 6.

The intermediate roofing sheet layer 10 may have a width y, which is determined by the condition x <y <3x, where x is the width of the edge zone 4 'of the layer 4 of the upper board.

In the embodiment of FIG. 3, the width w of the individual roofing strip in the additional first and second sets of roofing strips 26 will be 2y, the width of the underlying first

7 DK 93 00538 U3 and other set of roofing paper strips 6, 7 are 2y minus 2x.

The length a of the roof covering element 3 can be 1.6-2.5, preferably 1.8-2.4 times the width b of the latter. It is particularly convenient if the individual roof covering element 1 has the dimensions 120 x 240 cm.

As shown in FIG. 5, the bottom layer 5 of the individual roof covering element 3 can have a greater width and / or length than the overlying roof paper layer -4. Thereby, a recess or "trench" is formed between two adjacent roofing elements 3. This "trench" is filled by a strip 6 from the first or second set of roofing strips 6. As shown, a strip 26 from the first or second set additional roofing cardboard strips that fill the trench have a width greater than the width of the "trench" z.

15 In the present application, "roofing board" means cardboard or felt impregnated with bitumen.

"Low slope roofs" means roofs with a slope of 1-10%.

It is mentioned above that the roofing according to the manufacture is suitable for renovation of old roofing. Optionally, the 20 new roofing can be put directly on top of the old one.

The production can be changed in many ways without deviating from its idea.

Claims (12)

1. Roofing (1) for placement on low-pitched roofs, e.g. directly on a concrete deck (2) or on an insulating layer thereon, wherein the roofing comprises a plurality of roofing elements (3) which are adjacent to one another, which is new in that the individual roofing element (3) is substantially rectangular and made up of at least one layer of roofing board (4), and that the length (a) of each roofing element (3) is approx. 1.5-3.0 times the width (b) of the latter, and that the lines along which the roof covering elements (3) abut are covered by two sets of adhesive intersecting roofing strips (6, 7), both sets of roofing strips ( 6) has a length (1) which is many times the length (a) or width (b) of the individual roof covering element (3). Roofing according to claim 1, which is new in that the individual roofing element (3) layers (4) of roofing board, e.g. is of overboard, and there is a bottom layer (5) under this layer (4), e.g. of sub-cardboard or filler material, such as roofing cardboard, glass flakes or the like, and that the dimensions of the overcoat layer (4) are slightly larger than the dimensions of the bottom layer (5), so that a circumferential edge zone (4 ') of the cardboard when the roofing element is to be mounted on the roof surface can be pressed down to level with the underlying layer (5). Roofing according to claim 2, which is new in that the individual roofing strip (6, 7) is made up of a layer (16) of half-thickness overboard and a layer (17) of half-thickness sub-board and a thin layer therebetween. layers of adhesive (18). Roofing according to claim 1 or 2, which is new in that between the layer (4) of upper board and the bottom layer (5) of the individual roofing element (3) there is an intermediate roofing board layer (10) with circumferential edge zone (10 ') / which is wider y than the width x of the edge zone (4 ') of the overlay layer (4), and which, when the roof covering element (3) is to be mounted on the roof surface, can be pressed down to level with the bottom layer' (5). Roofing according to claim 1 or 4, which is new in that on top of the first and second sets of roofing strips (6, 7) having a thickness (t) corresponding to the thickness of the upper layer of roofing board (4), is adhered to a first and second set of additional roofing cardboard strips (26), respectively, of a thickness (u) in the main case corresponding to the thickness (t) of the bottom layer (5). Roofing according to one or more of claims 1-5, which is new in that the bottom layer (5) consists of shredded roof paper residues having "a grain size" of 2-6 mm, which roofing residues are adhered to the underside of the overlying roofing board ( 4). Roofing according to claim 1 or 2, which is new in that the edge zone (4 ') of the layer (4) of overboard has a width (x) corresponding to half the width of the roofing paper strips (6, 7). Roofing according to one or more of claims 1-7, which is new in that the middle roofing layer (10) has an edge zone (10 ') with a width y determined by the condition x <y <3x, where x is the width of the edge zone (4 ') of the layer (4) of overboard. Roofing according to claim 5, which is new in that the width w of the individual roofing strip (26) in the additional first and second sets of additional roofing strips is 2y, while the width of each roofing strip in the underlying first and second set of roofing strips (6). is approximately. 2y minus 2x. Roofing according to one or more of claims 1-9, which is new in that the length (a) of the roofing element (3) is 1.6-2.5, preferably 1.8-2.4 times the width of the roofing element (b). ). Roofing according to one or more of claims 1-10, which is new in that the individual roofing element (3) has dimensions of 120 x 240 cm. DK 93 00538 U3 Roofing according to claims 1 and 5, which is new in that a bottom layer (5), e.g. of sub-cardboard or filler material, such as roofing cardboard or fiberglass, having length and width dimensions slightly larger than the overlying roofing board layer (5), and that the first or second set of roofing cardboard strips fill the "trench" and that the width of the individual strip in said first and second set of additional roofing strips (26) is wider than said "trench".