| 摘要 |
A sound and/or moisture barrier underlayment suited for use on a roof or floor surface to provide a substantially flat and level surface, comprises at least first and second strips of insulation membranes ( 10 ) laid down one next to the other in a coplanar relationship. The first and second strips ( 24, 26 ) have a thickness W 1. An overlap joint ( 28 ) is provided between the first and second strips ( 24, 26 ). The overlap joint ( 28 ) has a thickness W 2 substantially equal to or less than W 1 to provide a free-bump transition between the first and second strips ( 24, 26 ) while preventing straight-through infiltration.
|
