US1871067A

US1871067A - Reenforced roofing

Info

Publication number: US1871067A
Application number: US476537A
Authority: US
Inventors: Harry C Macan
Original assignee: ANACONDA SALES CO
Current assignee: ANACONDA SALES CO
Priority date: 1930-08-20
Filing date: 1930-08-20
Publication date: 1932-08-09
Anticipated expiration: 1949-08-09

Description

g- -1 H. c. MACAN 1,871,067

- REENFORCED ROOFING Original Filed Au 20. 1930 INVE TOR ATTORNEY;

Patented Aug. 9, 1932 I UNITED STATES PATENT OFFICE HARRY C. MACAN, OF RUTHERFORD, NEW JERSEY, ASSIGNOR TO ANAGONDA. SALES COMPANY, OF NEW YORK, N. .Y., A CORPORATION OF DELAWARE REENFORCED ROOFING Application filed August 20, 1930, Serial No. 476,537. Renewed March 25, 1932.

This invention relates to roofing materials and is concerned more particularly with a with its use. The new product is especially suitable for use in valleys, as flashings, and for other purposes in which it is bent to conform to roof surfaces meeting at. an angle,

the reenforoement preventing cracking of the material when so flexed and laid.

The product of the invention comprises a web made of asphalt-impregnated felt or the like, and provided with a suitable armoring material on that face which is to be ex- (1 to the weather, and a reenforcing member aflixed to the other surface thereof. This member preferably takes the form of a textile fabric saturated with asphalt and secured to the web thereby. The fabric may cover the entire rear surface of the web but is preferably narrower than the web and spaced inwardly from the edgesthereof. A reenforcement so applied protects the felt throughout those areas where bending is likely to occur and prevents cracking and, at the same time, a saving of reenforcing material is effected.

In one form of the invention especially useful in valleys, the web may be provided with an armoring in the form of a band of thin metal, such as copper, extending lengthwise to cover a zone spaced inward from the edges of the web and constituting the surface exposed to the weather, while in another form, the web is provided with the usual asphalt coating with an armoring sur-' face formed of grit embedded in the asphalt.

For a better understanding of the invention, reference may be had to the accompanying drawing, in which Fig. 1 is a transverse sectional view show ing one form of embodiment of the invention;

Fig. 2 is a. plan View of the material shown in Fig. l

Fig. 3 is a sectional view showing the manner in which the material illustrated in Figs.

1 sand 2 is employed for projecting valleys; an Fig. 4 is a sectional view showing another form of material embodying the invention.

Referring to the drawing, the material illustrated in one form in Fig. 1 includes a Web 10 of suitable roofing material such as rag felt, asbestos felt or the like impregnated with a waterproofing material preferably of a bituminous character, such as asphalt. This web is of greaterlength than width and it is ordinarily wound in rolls for shipment. Aflixed to the upper surface of the web which is to be exposed to the weather is a band 11 of thin weather-resistant material, preferably copper. The metal is aflixed to the surface of the web by a suitable adhesive such as a thin film of asphalt or the metal may be electroplated directly on the web. The band of metal is of less widththan the web and is applied thereto so as to cover a central zone with the edges of the metal spaced inwardly from the edges of the Web. Aflixed to the web along the edges thereof are strips 12 of the web material, these strips extending along the margins of the web not covered by metal and slightly overlapping the edges of the hand. These strips serve not only to hold the band in place but also prevent water from seeping between the metal and web and causingseparation of the metal from the web. The strips are held in place on the web by suitable adhesive such as asphalt.

Aflixed to the under surface of the web is a reenforcing element 13 which preferably takes the form of a light textile fabric. This fabric is ordinarily saturated with asphalt before its application and held in place on the under surface of the web by a thin film of asphalt.

When the material illustrated in Figs. 1 and 2 is used for covering a valley as shown in Fig. 3, the web is flexed along its central longitudinal axis and secured in position preferably by nails which are driven through the web a slight distance beyond the edges of the metal band. When the adjacent roofing elements 14 are then, laid to cover theroof, these elements overlie the strips 12 along the edges of the valley material and thus cover the nail heads and the strips so that only the metal band is exposed.

In the flexing of the felt web to cause it to conform to the surfaces which constitute the valley, the web which is saturated with asphalt might crack but for the presence of the reenforcement. The textile fabric supports and strengthens the web and prevents 1 such cracking, at the same time does not interfere with the flexure of the web required to cause it to conform to the surfaces. The fabric also supports and strengthens the felt against injury due to persons walking on the valley in those places where the valley material may not be properly laid and out of close contact with the roofing structure.

The textile fabric reenforcement is preferably somewhat narrower than the web for purposes of economy and may be applied to cover a central zone of the web, although for some purposes it may bedesirable to offset the reenforcement relative to the longitudinal axis of the web. In either event, the reenforcement protects the web in that area where bending is likely to occur and preferably the fabric extends a slight dhstance beyond the edge of the metal so as to afford additional reenforcement along the nailing line, the nails passing through the fabric and into the roof structure.

In Fig. 4 there is illustrated another form of reenforced roofing which embodies the invention, this material including a web 15 of asphalt impregnated felt or'similar roofing material having a surfacing layer 16 of grit on that face which is to be exposed to the weather. Preferably the grit is affixed to the web by coating the latter with asphalt in which the grit particles are embedded. To the under surface of this felt web is applied the reenforcing member 17 in the form of a textile fabric saturated with asphalt and affixed by asphalt.

While the metal-clad material is preferable for valley purposes, it sometimes happens that roll roofing with a grit surfacing is used for that purpose. Here again, the material constructed in accordance with the present invention and including reenforcing is pro tected against cracking when flexed to conform to the roofing surfaces and the reenforcement also serves a useful purpose in roll roofing which is laid fiat on the roof. Sometimes, due to improper laying or by reason of temperature changes, such roll roofing does not lie in full contact with the roof structure and those portions which have buckled clear of the roof or are not fully protected from beneath might be injured by persons walking thereon. With the reenforcing material afiixed to the under surface, such injuries are prevented. As roll roofing is ordinarily laid with a substantial overlap, it is usually suificient' to confine the reenforcement to a central zone placed inwardly from the edges of the felt and preferably the reenforcement is limited to the central area of the band with a. selvage edge of equal width on either side thereo I claim: I

1. A roofing material which comprises a web of fibrousmaterial impregnated with a water-proofing material and of greater length than width, surfacing material on the surface of the web intended to be exposed to the weather, and a fabric reenforcing member of less width than the web on the other surface thereof and extending substantially the full length of the web.

2. A roofing material which comprises a web of fibrous material impregnated with asphalt and of greater length than width, armoring material on one surface of the web and aflixed thereto by asphalt, and a fabric reenforcing member saturated with asphalt on the other surface of the web and covering a zone as long as the web but of less width.

3. A roofing material which comprises a web of asphalt-impregnated felt of extended length, a band of weather-resistant metal on one surface of the web and covering a cen tral zone thereon, and a reenforcing member of fabric on the other surface of the web and extending throughout the length thereof but of less width.

4. A roofing material which comprises a web of asphalt-impregnated felt of extended length, a band of weather-resistant metal on one surface of the web and covering a central zone thereon, and a reenforcing member of asphalt saturated fabric on the other surface of the web and covering a central zone from end to end of the web but of less width.

5. A roofing material which com rises a web of asphalt-impregnated felt, a and of weather-resistant metal on one surface of the web with the edges of the band spaced inwardly from the edges of the web, and a reenforcing member of fabric narrower than the web and on the other surface of the web and in substantial registry with the band.

6. A roofing material which comprises 'a web of asphalt-impregnated felt, a band of weather-resistant metal on one surface of the web with the edges of the band spaced inwardly from the edges of the web, and a reenforcing member of fabric narrower than the web on the other surface of the latter,

thereof and extending throughout the length of the web, the fabric being wider than the metal and in substantial registry therewith with reference to the longitudinal axis of the we 8. A roofing material which comprises a web of asphalt-impregnated felt having a coating of asphalt on one surface with grit embedded therein, and a reenforcing member of fabric on the other surface of the web, the member being of less width than the web but substantially the same length.

9. A roofing material which comprises a web of asphalt-impregnated felt having a coating of asphalt on one surface with grit embedded therein, and a strip of asphaltsaturated textile fabric on the other surface of the web, said fabric being of less width than the web and covering a zone the edges of which are spaced inwardly from the edges of the web.

In testimony whereof I aflix my signature.

HARRY C. MACAN.