DensDeck® Prime Roof Board Specs

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      Why DensDeck® Prime Roof Board?

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

      The unique construction of DensDeck® Prime Roof Boards provides excellent flute spanning and will help stiffen and stabilize the roof deck. Additionally, DensDeck® Prime has been shown to withstand de-lamination, deterioration, warping, and jobsite damage more effectively than roofing membrane substrates such as paper-faced gypsum board, fiberboard, and perlite insulation.

      Size
      1/4" Dens-Deck® Prime™
      R-Values0.28 [Tested in accordance with ASTM C518 (heat flow meter)]
      Flexural Strengths, Parallel, lbs. min.≥ 40 (178) [Tested in accordance with ASTM C473, method B]
      Thicknesses.25" (6 mm)
      Weights, nom. lbs. / sq. ft.1.2 lb. / (5.9 sq. ft.)
      Bending Radiuses4' (1,219 mm)
      Permeance Perms>30 (>1,710) [Tested in accordance with ASTM E96 (dry cup method)]
      Flute Spanabilities2.63" (66.8 mm) [Tested in accordance with ASTM E661 (400 lb. conc. load)]
      1/2" Dens-Deck® Prime™
      R-Values0.56 [Tested in accordance with ASTM C518 (heat flow meter)]
      Flexural Strengths, Parallel, lbs. min.≥ 80 (356) [Tested in accordance with ASTM C473, method B]
      Thicknesses.50" (13 mm)
      Weights, nom. lbs. / sq. ft.2.0 lb. / (9.8 sq. ft.)
      Bending Radiuses6' (1,829 mm)
      Permeance Perms>23 (>1,300) [Tested in accordance with ASTM E96 (dry cup method)]
      Flute Spanabilities5” (127 mm) [Tested in accordance with ASTM E661 (400 lb. conc. load)]
      5/8" Dens-Deck® FireGuard Type X
      R-Values0.67 [Tested in accordance with ASTM C518 (heat flow meter)]
      Flexural Strengths, Parallel, lbs. min.≥ 100 (444) [Tested in accordance with ASTM C473, method B]
      Thicknesses.63" (15.9 mm Fireguard® type X)
      Weights, nom. lbs. / sq. ft.2.5 lb. / (12.2 sq. ft.)
      Bending Radiuses8' (2,438 mm)
      Permeance Perms>17 (>970) [Tested in accordance with ASTM E96 (dry cup method)]
      Flute Spanabilities8" (203.2 mm) [Tested in accordance with ASTM E661 (400 lb. conc. load)]

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