Building Paper BU0100: HAL-TEX 20 Minute Specification SheetBU0400: HAL-TEX 30 Minute Specification SheetBU0500: HAL-TEX 60 Minute Specification SheetSafety Data Sheet (SDS)Breather Membranes for Wood Framed WallsBuilding Paper Frequently Asked Questions (FAQ) Wall & RainscreenJordon HarcoOctober 21, 2019building paper, walls, tar paper, building envelope Facebook0 Twitter