Stick-down system for roofing
AssigneeElk Corporation
InventorsJohn G. Freshwater, Alfred B. Malmquist
Life of this patent
Estimating the term…
Abstract
A stick-down system for roofing membrane or shingles includes a sealant of compounded bitumen which is a roofer's flux and/or asphalt resin containing from about 3% to 20% by weight of rubber and/or thermoplastic resins such that said sealant exhibits high tackiness at ambient temperatures and is adhesive to an adjacent asphalt shingle. When roofer's flux is the compounded bitumen of choice, the sealant is adhesive to an adjacent shingle at temperatures in the range of from 90.degree.-130 .degree. F. The stick-down system also includes a release sheet having a release substance of either silicone resins, fluorine-containing resins or polyvinylidene chloride.
Claims13
A roofing membrane having superposed on at least one surface:
- (a) a compounded bitumen sealant consisting essentially of untreated roofer's flux and from about 3% to 20% by weight of rubbers, thermoplastic resins, and mixtures thereof, wherein said compounded bitumen exhibits high tackiness at ambient temperature and is adhesive to an adjacent asphalt shingle;
- and
- (b) a release sheet having a release substance selected from the group consisting of silicone resins, fluorine-containing resins and polyvinylidene chloride;
- wherein said sealant is superposed at one or more positions on one area of said membrane and said release sheet is superposed on another area of said membrane.
A compounded bitumen adhesive medium for laminated roofing membrane which consists essentially of untreated roofer's flux and from about 3% to 20% by weight of rubbers, thermoplastic resins, and mixtures thereof.
A compounded bitumen pre-saturant for coating a roofing membrane which consists essentially of untreated roofer's flux and from about 3% to 20% by weight of rubbers, thermoplastic resins, and mixtures thereof.
Dependencies are inferred from the claim text.