Patent ID: 8061098

Claim:
A roof/wall structure comprising: a substantially rigid substrate; and a waterproof composite membrane adhesively joined to an outer surface of said substrate; said composite membrane comprising: an outer surface layer of a selected one of thermoplastic and elastomeric waterproof material of about 60 mils thickness or greater; and a backing layer of homogeneous non-absorptive closed-cell foam material of about of about 60 mils thickness or greater and constant cross-section, bound in continuous contact to an inner surface of said thermoplastic or elastomeric material; a pressure sensitive adhesive contiguous with and bound to a side of said non-absorptive closed-cell foam material remote from said layer of thermoplastic or elastomeric material and bound to said substrate; and a 2-4 inch selvedge structure overlapping and bonding said waterproof material to an adjoining membrane; wherein the structure comprises a plurality of said membranes which are 6.5-12.0 feet in width disposed on said substrate side-by-side with side edges of their respective backing layers abutting each other; and wherein said structure provides waterproofing and moisture protection.