Patent ID: 8512508

Claim:
A method of securing a roof membrane or layer of insulation to a roof surface by use of a low volatile adhesive comprising: a) applying a bitumen based adhesive to at least a portion of said roofing surface, said bitumen based adhesive having a low volatile content and comprising 19-22 weight percent plasticizer, 16-18 weight percent bitumen, 0.01-0.1 weight percent adhesion promoter, 0.05-0.35 weight percent antioxidant, 0.05-0.3 weight percent dehydration agent, 20-35 weight percent filler, 0.4-1.2 weight percent thixotropic agent and 0.1-0.4 weight percent catalyst and 25-31 weight percent polymer, said polymer includes a compound selected from the group consisting of silylated polyurethane, silylated polyether, silylated polyester, and combinations thereof, said polymer in said bitumen based adhesive having a greater weight percent than said bitumen, said plasticizer in said bitumen based adhesive having a greater weight percent than said bitumen, a weight percent ratio of said polymer to said bitumen in said bitumen based adhesive is at least about 1.05:1, a weight percent ratio of said plasticizer to said bitumen in said bitumen-polymer-plasticizer mixture is at least about 1.01:1; b) applying said roof membrane or layer of insulation at least partially over said bitumen based adhesive; and, c) at least partially curing said bitumen based adhesive to secure said roof membrane or layer of insulation to said roofing surface.