US 2847948 A
Description (OCR text may contain errors)
Aug: lg, 1958 w. G. TRulTT' 2,847,948
' coMPosITE RooFING sm!a Filed May 6. 1955 i ATTORNEYS v lNvEN-roR (ALM/A6, M.
United States Patent Ofiee 2,847,948 YPatented Aug. 19, 1958 2,847,948 COMPOSITE ROOFING-STRIP William G. Truitt, Philadelphia, lPa. Application May 6, 1955, Serial`No.-506,579 2 Claims. (Cil. 10S-6) This invention relates to improvements in roofing or siding materials and, `in particular, ,relates to a roofing essentially all metallic.
Another object of the invention .is to kprovide a cornpositejr'oong or siding strip having a base and a protective metallic sheet thereon which projects from one edge of the 4base so that when fafplurality of strips is fixed on a roof, the projected portion of one sheet is sealed with the sheet of an adjacent bottom strip, thereby sealing the base from exposure.
Another object of the invention is to provide a composite roong or siding strip having a base and a protective metallic sheet thereon, the base having a plurality of apertures to assist in fixing the sheath to the base and the base to the surface to be covered.
Another object of the invention is to provide a composite roofing or siding strip having a base and a protective metallic sheath thereon, the base and sheath being pliable so that the strip can be arranged in roll form for transportation and storage.
The preferred manner of constructing the invention will be described in connection with the drawings wherein:
Figure 1 is a perspective View showing a strip of the invention arranged in the form of a roll;
Figure 2 is a cross section of a roofing strip taken along the line 2 2 of Figure 1;
Figure 3 is a fragmentary view partially cut away showing another embodiment of the roofing strip of the invention; and
Figure 4 is a diagrammatic sectional view showing a plurality of strips arranged in a covering assembly on a roof.
In Figure 1 the strip is wound up in the form of a roll R and comprises a base 1 having fixed on the top surface thereof a metallic sheet 2. It will be apparent that when the roll R is unwound so that the strip lies flat, the base is generally rectangular in shape and the length, thereof, i. e., in the direction shown by the arrows 3, is substantially greater than the width as shown by the arrows 4. The metallic sheet is also rectangular in shape and preferably partially covers the top surface of the base l, the lengthwise edge 2a being spaced from the lengthwise edge 5 of the base a distance d in the order of 40 to 50% of the total width of the base. The lengthwise edge 6 of the sheet 2 is spaced from the lengthwise edge-7 fofgthebase to.formfa projected,v portion yl0, which is about-2 or 3% of the tota1-width kof the base 1. The sheet 2, preferably Vcovers the base 1 as between the widthwise edges.
Preferably the base 1 ismade of waterproof or waterresistant-material such 'as jute, glass wool, asbestos, rag, paper pulp fibers or the like,impregnated with a bituminous material such vas tar, asphalt or pitch. This type of base gives firm support forthe metal -sheet and is pliable so that the strip can be wound up in roll form. Where-the ybase isfmade from material other than that suggested, `it is essential that the base be pliable and capable of supporting the metallic strip.
It is preferable that the Vthickness-of the metal sheet used bein the foil class, i. e., '.0025-.005, inch thick, or, `ifnot'in that suggest-ed class, :be of a thickness or have a ductility such that the composite strip can be wound :up vinto .a roll. One metal which particularly satisfies this requirement `is aluminum. In addition, aluminum is npreferred becauseof its ability, when exposed -to the elements, to withstand deterioration and also becausefof its-ability to "resistpenetration of heat intothebuilding during the-summermonths andto conserve heatiinrthe building `during the fall and winter months.
Even though1the metal sheet may be in the foil class, I have vfound vthat where :the `base lis pliable and in the order of %4}," thick, a resilient effect is obtained which, `when'theroof `is 'walked'on, prevents damage to the metal sheet.
The aluminum s'heet'is secured .to the base preferably byfany good'mastic. 1For example, where a waterproof or water-resistant base as mentioned is used, the adhesive may comprise tar, asphalt or pitch. Other adhesives may be used, for example, adhesives having a rubber base with either a water, petroleum or resin vehicle. Other desirable mastics may be of the vegetable gum type such as cotton seed oil gum. Another known way of securing aluminum foil to a base made of material of the kind mentioned herein is to use foil which is pre-bonded on one side with kraft paper, the paper side then being secured to the base.
In Figure 3 I have shown a fragmentary view of a rooing strip which is constructed similarly as described except that the base 1' has a plurality of holes or perforations P extending therethrough. I have found that these perforations assist in strengthening the bond between the aluminum sheet and the base and also in strengthening the bond between the under surface of the -base and the roof surface to which the strip is applied.
In Figure 4 I have shown somewhat diagrammatically the manner in which the strips of the invention are applied to a roof. First, a starter grip 12 (which may be made of the same material as the base 1 mentioned above) is nailed or stapled to the lowermost section of the roof. Then a roll comprising the strip S-l is laid on the starter strip 12 and the section of the roof above the starter strip, this portion of the roof and the starter strip being previously coated (by brush or spray) with a mastic such as mentioned above. The projected portion 13 is pressed down on the mastic to overlap the starter strip. Thus the edge 14 of the base and edge 12 of the starter strip are isolated from the atmosphere. If desired, nails or staples may be applied along the top part of the strip not covered by the sheet, for holding the strip in place. A mastic is then applied along the upper portion of the strip and the roof as between the distance d-1 and then a roll comprising the strip S-2 unwound to the position as shown. For this latter operation, the metal sheet may be provided with a guide line as line l in Figure 1. Nails or staples are applied to the top area of the base and the projected portion is pressed down in the mastic to overlap the metal strip S-1 to seal off the edge 16. Preferably the strip S-2 is arranged on the strip S-1 such that there is an overlap between the base of S-Z and the metal sheet of S-1 as indicated at 17. The strips S-3, S-4 and S-S are applied in the same manner. The other side of the roof is then covered and terminates with the strip S-6. The apex of the roof is then coated with a mastic and a strip S-'l is applied. This sheet 19 which is arranged on the base such that there is an overlap on the opposite edges such as indicated at and 21.
Where the roong operation requires that the ends of two strips be interconnected, I prefer to overlap the ends of such adjacent strips and then cover the exposed portion 0f the base of the top strip with a sealing strip having a construction similar to that of S-7'. The sealing strip is supplied in roll form and preferably is two or three inches in width and cut to required length for the covering operation. The edges of the bases of the composite strips as laid on a roof as above-described are preferably protected from the atmosphere by laying along an edge of the roof a sealing strip such as mentioned above or, alternatively, rigid preformed pieces generally U-shaped in cross section can be used, these latter pieces being nailed to the edge of the roof.
From the foregoing, it will be apparent that the invention provides a composite roofing strip which, when manufactured, can be wound up in the form of a roll and, therefore, easily shipped and stored. From the description in connection with Figure 4, it will also be apparent that this roll-like form is highly conducive to simple and rapid application to a roof and that the collective disposition of the metal sheets presents an essentially latter strip comprises a base 18 and a metal 7 all-metallic surface which makes for long life and good insulating properties.
With regard to the strip S-7 mentioned above, it should be noted in passing that this type of strip is also useful for the covering of a ashing.
1. A composite rooting or siding covering comprising: a pliable base which can be wound into roll form and unwound into strip form, the base, when unwound, being of generally lrectangular shape and being of substantially greater length than width; and a metal sheet fixed to one surface of said base, the sheet being pliable whereby it can be wound with the base into roll form and unwound into strip form, the sheet, when unwound, being of generally rectangular shape and substantially covering said surface between the widthwise edges and one lengthwise edge of the sheet being spaced inwardly -from the corresponding lengthwise edge of the base to form an uncovered area on the base and the other lengthwise edge of the sheet being spaced from the other lengthwise edge of the base to form a projected portion.
2. A construction in accordance with claim 1 wherein said metal sheet comprises aluminum foil.
References Cited in the le of this patent UNITED STATES PATENTS 688,302 Grether Dec. 10, 1901 1,449,058 Robinson Mar. 20, 1923 1,551,318 Logan Aug. 25, 1925 1,663,565 Robinson Mar. 27, 1928 1,908,127 Deacon May 9, 1933 2,433,694 Heinning Dec. 30, 1947 FOREIGN PATENTS v* 177,886 Switzerland Sept. 16, 1935