GAF DensDeck® Roof Board

The patented DensDeck® design employs glass mat facings front and back that are embedded into a water-resistant gypsum core providing excellent fire resistance, moisture resistance, and wind uplift properties.

The unique construction of DensDeck® provides excellent flute spanning that stiffens and provides increased foot traffic resistance to the roof deck. Additionally, DensDeck® has been shown to withstand de-lamination, deterioration, warping, and jobsite damage more effectively than other roofing membrane substrates such as paper-faced gypsum board, fiber board, and perlite insulation.

a)Tested in accordance with ASTM E84, its surface burning characteristics are Flame Spread-0 and Smoke Developed-0. 5/8" (16 mm)

b)DensDeck Roof Board is available in thicknesses of 1/4", 1/2" and 5/8" Type X. widths and lengths - 4'x4' and 4'x8' standard.