Polymer-based composite structural underlayment board and...

Details Polymer-based composite structural underlayment board and... Polymer-based composite structural underlayment board and...

2006-09-22

2010-06-15

Glessner, Brian E (Department: 3633)

Static structures (e.g., buildings)

Underlying compressible layer or pad

C052S309100, C052S309400, C052S408000, C052S480000, C052S796100, C428S316600, C428S319700, C428S319300

Reexamination Certificate

active

07735279

ABSTRACT:
A building flooring system includes a plurality of polymer-based composite structural underlayment boards overlaying and secured to a building subfloor to form an underlayment layer over the building subfloor and a nonstructural finish-flooring layer overlaying and bonded to the underlayment layer. The polymer-based composite structural underlayment boards each have a polymer material core layer or a predominantly polymer material core layer that typically contains from 1% to 40% by weight filler(s) and a density between 1.6 lbs/ft3and 25 lbs/ft3. At least the top or bottom major surface of each of the polymer-based composite structural underlayment boards is overlaid by a facer that reinforces and strengthens the polymer-based composite structural underlayment board and that is generally coextensive with and bonded to the overlaid major surface of the polymer-based composite structural underlayment board.

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