Lamtec WMP-VR is a PSK (White polypropylene film, fiberglass & polyester scrim, 11# natural kraft) vapor retarder or facing, primarily used for metal or pre-engineered buildings. It is a very cost effective metal building facing that has excellent installed appearance. The white film side is installed toward the interior of the building. Permeance Test Method ASTM E 96, Procedure A - 0.09 perms.

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