US2097845A - Roofing - Google Patents

Description

Nov. 2, 1937. L, SNOW 2,097,845

ROOFING Filed June 26, 1934 gill IHHHI I I Z0 /8 w ATTORNEY Patented Nov. 2, 1937 r V UNITED STATES PATENT OFFICE ROOFING Laney Snow, Noroton, Conn. Application June 26, 1934, Serial No. 732,396

2 Claims. (Cl. 108-9) The present invention relates to' roofing and place, acourse of undereave slate 20 is laid, being has particular reference to roofing construction retained in place by nails 22 passing through for slate roofs. suitable holes in the upper corners of the slate.

principal object of the invention is the pro The slate for this course is relatively narrow, 5 vision of improved slate roofing construction utipreferably being about 7 inches wide. It will be hang a novel arrangement of slates and roofing evident from Fig. 1 that the foundation sheets felt or the like whereby the amount of slate reneed not all be laid before the laying of slate is quired to cover a given roof area is greatly recommenced, and the bottom sheet of foundation duced as compared with the usual form of slate felt may be unrolled from the usual roll and laid 0 roof construction, while at the same'time proprogressively ahead of theslate as the latter is 10 viding full protection against leakage of water nailed in place, the nails for the slate serving to or air through the roof. A further object is the anchor the foundation sheet in place. provision of a roof of the above character that Over the course of undereave slate 20 a filler 1s simple in construction and that may be insheet 24 of roofing felt is laid. This sheet is stalled easily and with the minimum amount of preferably of standard width of 18 inches and the 15 labor by those having only the ordinary amount lower edge 26 of the sheet is preferably placed of skill, and which does not involve the cost of va short di ta c above the lower edge the 'prefabrication of roof units in order to secure undereave slate 20. ease and simplicity of application. A still fur- Over the sheet 24 the lower course 28 of roof ther object of the invention is the provision of a slate is laid, this course consisting of slate of the 20 20 roof construction of the above character that width to be used for the whole roof and being y be applied readily to any form or contour materially narrower than the slate used in ordiof roof where ordinary slate roof construction is y Slate roof censtruetien- Preferably the applicable. x slate 28 is approximately 10 inches wide. As will Other and more detailed objects of the invenbe evident r m F sthe fi l Sheet 24 and 25 tion, together with the advantages to be derived the course of slate 28 may be laid progressively from its use, will become evident from a conand substantially together, the slate 28 being resideration of the ensuing description of a pretained y ails 30 passing through e pp ferred form of roof construction embodying the corners of the Slate and Serving t0 anchor the 30 invention which is illustrated in the accompanysheet ing drawing, in which I A second filler sheet 32, of the same width as Fig. 1 is a plan view of a, portion of a, 1 sheet 24, is laid over the upper exposed portion embodying the invention and illustrating a preof Sheet a the upp p r i n o e ou e ferred mode of application, and of slate 28, covering and extending for some dis- Fig. 2 is a section taken on the line 2-2 of tehee below the h d f 8 30. 35

Fig. 1. Over the lower portion of the filler sheet 32 Referring now to'the drawing, It indicate th the second course of slate 34 is laid, the lower wood roof sheathing which may be of different d e o this course p rab y exte di a short forms of construction but which is shown as of distance below the lower e of S e 32 a the usual tongue-and-groove siding. Over the shown in the drawing. The course of slate 34 is 40 sheathing "1- there is laid the foundation conretained y nails 36 passing throu h t e filler sisting of sheets l2 of suitably impregnat d roofsheets 24 and 32 and also through the foundaing felt or the like. Sheets l2 are advantageously tion sheet of standard width, for example, 36 inches, and The third filler sheet s d ove t e upp r are overlapped as at ll, preferably about 4 inches.

As many courses of foundation fen; r employed course of slate 34, and the third course of slate as may be necessary to cover the area, t be 40, retained by nails 42, is laid over sheet 38 in a roofed. In the case of a. ridged roof the foundamanner sim r o h alre dy described wi h tion felt is preferably carried over the ridge on respect to S e 32 a Slate portion of sheet 32 and the upper portion of the 45 t each side to provide a double thickness for a Similarly the slate courses 44, 46 and 48, re- 50 distance of 6 inches or so on each siqe'of the tained by nails 50, 52 and 54, are laid over assoridge. A cant strip I6 is preferably employed ciated filler sheets 56, 58 and 60, and the conat or adjacent to the cave line I8, over which struction continued inlike manner for as many the bottom sheet of foundation felt is laid. courses as may be required to cover the desired 55 With the bottom'sheet of foundation felt in area. 55

The several courses of slate are laid in overlapping relation so that a relatively narrow portion of each course is covered by the adjacent course. For example, if slate of -inch width is employed the slate is preferably laid so that 6 to 7 inches of each course is exposed in the finished roof. Thus, as will be evident from the drawing, each filler sheet underlies two full courses of slate and partially underlies a third course. Consequently, under the joints between courses, as for example at 62, there are 4 thicknesses of felt sheeting, at this point consisting of the sheets 56, 38, 32 and I2.

Furthermore, at the joints between adjacent slates "of the same course, as at 64, there is provided the protection afforded by 3 or 4 thicknesses of felt.

As is well known, leakage tends to occur due to the beating of rain upwardly under the lower exposed edges of the different courses of slate, and such leakage is effectively prevented with the construction just described, not only because of the sealing action of the lower edges of the several filler sheets which are in effect clamped between adjacent courses of slate, but also because of the fact that the lower portion of each filler sheet covers and effectively seals the holes in the underlying course of slate through which the nails pass.

it enables the roof to be laid with the minimum of labor.

Obviously the degree of skill required to lay the roof properly is not great, and in addition to the cost advantage due to the saving in the amount of slate required to roof a given area, the saving in labor as compared with ordinary construction The brittle characteristic of natural slate is such that chipping and the like inevitably is very substantial, and is in fact comparable to the labor charge incident to the laying of prefabri- The advantages to bederived from the use of the invention are greatest when it is made use of with natural slate, but it is to be understood that the invention is capable of application with other materials such as ceramics or synthetic compositions and as to which the term slate as used herein may be considered as applying.

It will further be understood that the term roofing felt as employed herein is used in a descriptive and not limiting sense.

What I claim is:

1. A roof the major portion of which is covered by slate of a single thickness underlaid by a dual thickness of roll roofing felt, said roll roofing felt being laid in smooth strips with individual slate shingles independently applied thereupon in a manner to form a course, said slate shingles being disposed in slightly overlapping staggered relation to the slate shingles of an adjacent course, and each strip of roll roofing felt having its lower portion substantially co-extensive with the bottom line of the course of slate shingles and its upper portion above the upper line of the next superposed course of slate shingles.

2. Roof construction comprising alternate layers of roll roofing felt and slate, the roll roofing felt being laid in smooth strips and the slate being independently laid in courses of individual pieces upon said strips and the pieces of slate of one course being staggered relative to the pieces of slate of the adjacent course and slightly overlapping the same, the arrangement of roll roofing felt and slate providing a roofwhich has slate of a single thickness over its major portion underlaid with a double thickness of roll roofing felt, the lower portion of each strip of roll roofing felt being substantially coextensive with the lower extremities of the individual pieces of slate forming the course, and the upper portion of said strip of roll roofing felt extending above the upper extremities of the slate forming the next course

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