Patent ID: 7827751
Filing Date: 2010-11-09
Classification: B32B,E04B,E04D,E04F,Y10T

Abstract:
1. A moisture barrier underlayment adapted to be installed on a subfloor to provide a substantially flat and level surface for receiving floor covering, comprising: at least first and second strips of moisture barrier membranes laid down one next to the other in a coplanar relationship, said first and second strips having a thickness W an overlap joint between said first and second strips, said overlap joint having a thickness W an intermediate layer of substantially rigid floor members adapted to be installed next to one another in a coplanar relationship atop of said strips of moisture barrier membranes, wherein longitudinal grooves are defined in said floor members to accommodate expansion and contraction movements, and wherein said longitudinal grooves include peripheral grooves defined along the side edge portions of the floor members to provide flexible abutting fingers between the floor members.