US840103A

US840103A - Method of laying roofing.

Info

Publication number: US840103A
Application number: US30272606A
Authority: US
Inventors: Reginald W Bird
Original assignee: FLINTKOTE Manufacturing Co
Current assignee: FLINTKOTE MANUFACTURING Co
Priority date: 1906-02-24
Filing date: 1906-02-24
Publication date: 1907-01-01
Anticipated expiration: 1924-01-01

Description

No. 840,103. PATENTED JAN. 1, 1907. R. W. BIRD.

-METHOD OF LAYING ROOFING.

APPLICATION FILED FEB. 24,1906.

of the UNITED STATES PATENT REGINALD W. sun), or

FLINTKOTE oFFioE.

NEW JERSEY, A CORPORATION on. NEW JERSEY.

M THOD OF LAYING ROOFING.

Specification of Letters Patent Patented Jan. 1, 1907.

Application filed February 24,1906. Serial No. 302,726.

To (all n/mm, it may concern:

Be it known oston, in the county Massachusetts, have invented certain new and useful ln'iprovements in Methods of Laying Roofing, of Whichthe following is a speci fication.

This invention has relation to roofing. Roofing materials have heretofore been constructed of a sheet of felt or equivalent material saturated. or impregnated with a fine sand flint, or equivon the other face with a layer of waterproofing compound. In laying such roofing it has been customary to place roof with the coating of waterproofing compound next to the boards and with the layer of flint, sand, or gravel exposed to the atmosphere. In roofing a building it is customary to use boards, which are laid side by side upon the supporting-beams, and as much of the lumber is used in a comparutively green state and before it has been sulliciently dried there is present in the board a quantity of sap or resinous substance, according to the kind of wood of which the boards are formed. In laying the reeling material upon such boards with the smooth surface of the sheet in contact with the boards the sheet adheres to the surface of the board and prevents the escape of moisture, and therefore prevents the board from drying, and as a consequence the boards soon rot and the roof quickly deteriorates. Where the roof is formed of resinous woods a still more serious result ensues, particularly in warm climates, for the heating of causes the resinous sap to collect on the surface of the boards. Since the waterproofing compound used for impregnating the roofing sheets are composed of asphalt or similar materials, for which a resinous sap containing pitch and turpentine is a solvent, the latter eat into the sheet and destroyit. l have found this to be true from myown experience, for I have seen roofs (under the conditions de scribed) in which large portions of the sheet Were eaten away like sores. I have found that these evils may be overcome or prethat 1, REGINALD W. BIRD, of vented by laying the sheet upon the supporting-boards the roofing-strips with the of Suflolkandfitate of flint-coated surface of the sheets next to the sheets are=laid wooden boards. When -the in this way, an air-space is left between the sheet and the board for the escape of moisture and. forthe ventilation of thes ace. The coating of flint or sand holds the body of the sheet out of contact with the board and prevents the resinous sap from injuring the sheet. .I have demonstrated that by placing the sheet as described I am able to prevent the rapid rotting of the boards which support the sheet and also prevent the deterioration of the sheets and save them from the attacks of the resinous saps in the boards.

Referring to the 'drawings, Figure 1 r epresents in perspective View a portion of roof laid in accordance with my invention. l ig.

represents a magnified section through one of the boards and the roofing material thereon.

Referring to said drawings, a 0. im ijicatc the beams of aroof, upon which are laid boards I) I). These boards are preferably laid with small cracks or spaces between them, although this not necessary, as the shrinkage of the board is sufficient to form these spaces.

c 0 represent strips of sheets of insulating compound. 'lhese sheets are preferably formed with a body portion 3, of wool, felt, or equivalent material, which is saturated orimpregnatcd with wa erproofing compound,

having as its base asphalting or an analogous substance. The faces of the sheet are coated with layers 4 of the waterproofing compound. .lhe layer I; is coated with a layer of granular material- '--such as sand, flint, gravel,

or the like--\\'hercas the layer 4 is preferably lightly coated with tale 7 or similar material to prevent the convolutions from sticking together when the strips are rolled together. in Fig. 2 it will be seen that by arranging the roofing-strip c with the coating 6, of flint or sand, next to the boards I) there is lefta space to which air may have access to carry oil the moisture of the drying boards for the other purposes hereinbefore set forth.

Whatl claim is- The herein-described method of laying ing, material conskting oi a fibrous body iniprcgnzitcd with mt erproohng (:mnpound, mid having on one face a layer of non-abs01? ient granular JllaLtOlizLi and 'on the other face waturprouiiug compound, and laying said strips upon said foundation of boards iuoiing which consists in preparing afounda- Lion of boards, taking strips 01' sheets of r001 1 in tosbiniuny whereof I. have ail'ixud my signature in. presence 01" two witnesses.

. v REULNALQD W. BUM).

Wii-nesses:

.\l. B. MAY,

A. L. F o sou.