DK166833B1

DK166833B1 - A roof flashing

Info

Publication number: DK166833B1
Application number: DK505989A
Authority: DK
Inventors: Juergen Lewitz
Original assignee: Rasmussen Kann Ind As
Priority date: 1989-10-12
Filing date: 1989-10-12
Publication date: 1993-07-19
Also published as: DE4032058A1; DK505989A; DK505989D0; DE4032058C2

Description

DK 166333 B1DK 166333 B1

Opfindelsen angår et taginddækningsmateriale i plade- eller baneform og bestående i det mindste delvis af et metallag, fortrinsvis af bly, som er manuelt deformerbart til dobbelt krum facon med henblik på tilve-5 jebringelse af tætning mellem en tagbeklædning og en over denne opragende bygningsdel, navnlig en karm for et tag- eller ovenlysvindue.BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a sheet or sheet roofing material consisting at least in part of a metal layer, preferably of lead, which is manually deformable to a double curved shape to provide a seal between a roof cladding and an overlying structure part thereof. especially a frame for a roof or skylight.

Sådanne inddækningsmaterialer benyttes til fremstilling af tætte tilslutninger mellem f. eks. karmen 10 for et i et stråtag monteret vindue og den omgivende tagbeklædning, navnlig ved karmens underste vandrette parti.Such covering materials are used to make tight connections between, for example, the frame 10 for a window mounted in a thatched roof and the surrounding roof covering, especially at the lower horizontal portion of the frame.

Traditionelt har sådanne materialer bestået af ca. 1 mm tykke blyplader, hvis deformation til at følge 15 tagbeklædningens form ofte har krævet hamring med deraf følgende risiko for revner og brud.Traditionally, such materials have consisted of approx. 1 mm thick lead sheets, whose deformation to follow the shape of the roof covering has often required hammering with the resulting risk of cracks and breakage.

Fra EP-Bl-0 038 222 kendes et materiale af den angivne art, hvor en forbedret deformerbarhed er opnået ved korrugering af materialet i tætte bølger, hvorved 20 bearbejdningen af materialet til at følge en f.eks. bølgeformet tagbeklædning kan udføres manuelt og dermed med væsentlig mindre risiko for beskadigelse.EP-Bl-0 038 222 discloses a material of the kind specified, wherein improved deformability is obtained by corrugating the material in dense waves, whereby the processing of the material to follow a e.g. corrugated roofing can be done manually and thus with significantly less risk of damage.

Navnlig ved tagbeklædninger i form af bølgede tagsten med meget dybe bølgedale har det imidlertid 25 selv med dette forbedrede materiale vist sig vanskeligt at bibringe materialet tilstrækkelig deformation til at det kan slutte helt til tagbeklædningen, og ofte har det uanset den tilsigtede rent manuelle deformerbarhed vist sig nødvendigt at foretage bearbejdning med 30 et presse- eller hamreværktøj for at opnå et tilstrækkeligt godt resultat.However, especially with roofing in the form of corrugated roofs with very deep corrugated valleys, even with this improved material, it has proved difficult to impart sufficient deformation to the material to fully adhere to the roofing, and often despite the intended purely manual deformability, it is necessary to carry out machining with a press or hammer tool to obtain a sufficiently good result.

Ved bølgeformede tagbeklædninger af den nævnte art indebærer deformationen således i nogle tilfælde en ikke ubetydelig strækning af materialet, hvilket navn-35 lig ved en lille tykkelse af inddækningsmaterialet kan føre til uønsket revnedannelse.Thus, in corrugated roof linings of the aforementioned kind, the deformation entails a not insignificant stretching of the material, which, in particular at a small thickness of the covering material, can lead to undesirable cracking.

DK 166833 B1 2DK 166833 B1 2

Hvis inddækningsmaterialet, som det i og for sig er kendt fra DE-GBM-8701605, af æstetiske og miljømæssige grunde ønskes forsynet med et vejrbestandigt overfladelag, kan den nødvendige deformation føre til en så 5 betydelig revnedannelse i dette, at der sker en lokal afskalning, således at overfladelagets beskyttende funktion går tabt.If the cover material, as known per se from DE-GBM-8701605, is desired for aesthetic and environmental reasons to be provided with a weather-resistant surface layer, the necessary deformation can lead to such a significant cracking in that a local peel occurs. so that the protective layer of the surface layer is lost.

Ifølge den foreliggende opfindelse undgås disse ulemper ved en udformning af inddækningsmaterialet, som 10 er ejendommeligt ved, at det plade- eller baneformede materiale er fremstillet med et antal parallelle, fladlagte foldepartier, i hvert af hvilke materialet er foldet mindst to gange i modsatte retninger langs parallelle foldelinier til frembringelse af et materials leoverskud, som tillader deformation af materialet til at følge formen af en bølget tagbeklædning, hvorved afstanden mellem på hinanden følgende foldepartier er væsentlig større end bredden af hvert foldeparti, medens tykkelsen af hvert foldeparati i hovedsagen er bestemt 20 ved antallet af materialelag i foldepartiet.According to the present invention, these drawbacks are avoided in the design of the cover material, which is characterized in that the sheet or web-shaped material is made with a number of parallel, flattened fold portions, in which the material is folded at least twice in opposite directions along parallel fold lines to produce a material overlap allowing deformation of the material to follow the shape of a corrugated roof covering, the distance between successive fold portions being substantially greater than the width of each fold portion, while the thickness of each folding portion is generally determined at the number of layers of material in the folding portion.

Ved hjælp af de nævnte foldepartier opnås et sådant overskud af inddækningsmateriale i retning vinkelret på foldepartierne, at deformation, selv ved bølgeformede tagstensbeklædninger med dybe bølgedale, lettes 25 betydeligt og med væsentlig mindre risiko for beskadigelse af materialet.By means of said folding portions, such an excess of covering material is obtained in the direction perpendicular to the folding portions that, even with corrugated roofs with deep corrugated roofs, deformation is considerably facilitated and with substantially less risk of damage to the material.

Selv ved plan, ukorrugeret udførelse af materialet opnås en deformerbarhed på højde med, hvad der opnås med de fra ovennævnte publikationer kendte, korru-30 gerede udførelser.Even in planar, non-corrugated embodiment of the material, a deformability is achieved at par with that achieved with the corrugated embodiments known from the above publications.

Ved de nævnte bølgeformede beklædninger med dybe bølgedale kan det imidlertid ifølge opfindelsen være en yderligere fordel, hvis materialet, i det mindste mellem foldepartierne, er korrugeret i tætte bølger paral-35 lelt med foldepartierne.However, in the case of said corrugated shells with deep corrugated valleys, it may be an additional advantage of the invention if the material, at least between the fold portions, is corrugated in dense waves parallel to the fold portions.

Opfindelsen forklares i det følgende nærmere under henvisning til den skematiske tegning hvor DK 166833 B1 3 fig. 1 viser en del af karmen for et tagvindue under indbygning og med et kendt inddækningsmateriale, for tilslutning til tagbeklædningen, fig. 2 viser et snit i partiet ved vinduets ne-5 derste vandrette karms stykke, og fig. 3-5 viser tre forskellige udførelsesformer for et inddækningsmateriale ifølge opfindelsen.The invention will now be explained in more detail with reference to the schematic drawing, in which FIG. 1 shows a part of the frame of a skylight under construction and with a known covering material, for connection to the roof covering; FIG. 2 shows a section in the portion at the lower horizontal frame of the window 5; and FIG. 3-5 show three different embodiments of a cover material according to the invention.

Fig. 1 viser et tagparti med lægter 1 og en beklædning af tagsten 2. I dette tagparti er der ind-10 bygget et vindue med en karm med sidestykker 3 og et underkarmstykke 4. Dette er på sin fra tagfladen opstående underside beklædt med en inddækningsskinne 5, som langs sin underkant er sammenfalset med et skørt 6 bestående af et stykke finkorrugeret blyplade, der er 15 deformeret til bølgeform for at slutte tæt til oversiden af den nærmeste række tagsten 2. Af fig. 2 ses, at bølgehøjden ved skørtets underkant kan være ret betydelig, så at materialet i skørtet alså under deformering må strækkes væsentligt, navnlig ved denne under-20 kant.FIG. 1 shows a roof section with laths 1 and a roof of roof tile 2. In this roof section, a window has a window with a frame with side pieces 3 and a sub-frame piece 4. This is lined with a covering rail 5 on its underside rising from the roof surface. which along its lower edge is collapsed with a skirt 6 consisting of a piece of fine-corrugated lead plate 15 deformed into a waveform to join close to the upper side of the nearest row of roof tiles 2. From FIG. 2, it can be seen that the wave height at the lower edge of the skirt can be quite substantial, so that the material in the skirt must also be stretched considerably during deformation, especially at this lower edge.

Som foran forklaret medfører finkorrugeringen, at skørtet kan tåle en betydelig strækning, men dog er den herved opnåede strækbarhed ikke altid tilstrækkelig til at muliggøre den fornødne deformation uden revne-25 dannelse i eller anden beskadigelse af skørtets materiale.As explained above, the fine corrugation means that the skirt can withstand a considerable stretch, but the stretchability thus obtained is not always sufficient to enable the necessary deformation without cracking or damage to the material of the skirt.

Dette rådes der bod på med det ifølge opfindelsen anviste taginddækningsmateriale, der primært er beregnet til anvendelse i skørtet 6, og på hvilket tre 30 eksempler er illustreret i fig. 3, 4 og 5.This is remedied with the roof covering material provided according to the invention, which is primarily intended for use in the skirt 6, on which three examples are illustrated in FIG. 3, 4 and 5.

I fig. 3 er materialet en eventuelt beklædt metalplade, fortrinsvis af bly, der fra sin oprindelige, plane tilstand er foldet således, at den fremtræder med parallelle, fladlagte, S-formede foldepartier 7 og 35 mellemliggende partier 8, der har bibeholdt deres plane form, og hvis bredde, svarende til afstanden mellemIn FIG. 3, the material is an optionally coated metal sheet, preferably of lead, folded from its original planar state to appear with parallel, flattened, S-shaped fold portions 7 and intermediate portions 8 which have retained their planar shape, and whose width, corresponding to the distance between

Claims

1. Roof covering material in sheet or web form and consisting at least in part of a metal layer, preferably of lead, which is manually deformable to double curved shape to provide a seal between a roof covering (2) and an overhang thereof. building part, in particular a frame (3, 4) for a roof or skylight, characterized in that the sheet or sheet-shaped material is made with a plurality of parallel, flattened fold portions (7.7 ') in each of which the material is folded at least two 25 times in opposite directions along substantially parallel fold lines to produce a material excess which permits deformation of the material to follow the shape of a wavy roof covering (2), whereby the distance between successive fold portions (7, 30 7 ') is substantially greater. than the width of each folding pair ten, while the thickness of each folding portion in the main case is determined by the number of layers of material in the folding section.

2. Roofing material according to claim 1, characterized in that the material in each folding section is folded in opposite directions about two parallel fold lines. DK 166833 B1

Roofing material according to claim 1, characterized in that the material in each folding portion (7 ') is folded about four parallel fold lines with the same fold direction for the two middle fold lines. 5

Roofing material according to claim 1, 2 or 3, characterized in that the width of the material portions (7, 7 ') between the successive fold portions (7, 7') is at least three times the width of each fold portion.

Roofing material according to any one of the preceding claims, characterized in that. the material at least in the portions (8 ') lying between the fold portions (7) is corrugated in dense waves parallel to the fold portions.

Roofing material according to one of the preceding claims, characterized in that it consists of lead with a weather-resistant and appearance-enhancing surface layer, in particular paint or varnish.