DensDeck Gypsum Roof Boards & Cover Board Panels
DensDeck Gypsum Roof Boards Panels
DensDeck Roof Boards Fire-Resistant Panels
  • The #1 architecturally specified fiberglass mat gypsum roof cover board for nearly 30 years1
  • Superior dimensional stability over competitive gypsum fiber boards is due to their low coefficient of thermal and hygrometric expansion.
  • Shown to withstand delamination, deterioration, warping and job site damage far more effectively than paper-faced gypsum board and other conventional roofing products such as wood fiberboard and perlite * Certified by UL for use as a fire barrier over combustible and noncombustible decks in accordance with the ANSI/UL 790 and ULC S114 test standard
  • Certified by UL in roof deck constructions for internal (under deck) fire exposure in accordance with the ANSI/UL 1256 Steiner Tunnel test

1Based upon survey of CMD Group project specifications from 01/01/17 – 12/31/17.

Nearly 30 Years of DensDeck® Roof Boards – Proven Performance

With billions of square feet installed in a complete range of roofing systems and climate extremes, DensDeck® Roof Boards have proven their toughness and versatility. The unique construction has been shown to withstand delamination, deterioration, warping and job site damage far more effectively than paper-faced gypsum board and other conventional roofing products such as wood fiberboard and perlite.

DensDeck Roof Boards were designed to address persistent challenges inherent in commercial roofing assemblies, including fire resistance, strength and dimensional stability when installed in a properly designed roof assembly. The fiberglass mat-faced, noncombustible (as described and tested in accordance with ASTM E136), nonstructural, gypsum core panels provide superior fire resistance and protection from hail damage and hold up well under normal construction and maintenance foot traffic while stiffening and stabilizing roof decks. DensDeck Roof Boards are easy to install in all types of roof systems and are an ideal product for direct membrane application. DensDeck Roof Boards have also been tested within roofing systems for sound isolation.

Dens® Solutions are industry trusted, high-performing fiberglass mat gypsum panels suitable for your wall, roof, ceiling and floor projects. Dens Solutions carry the mark of our valued heritage in Gold, as a visible standard-bearer of our position as the first manufacturer to create a fiberglass mat board and as a relentless innovator of strength and moisture resistant products for over 30 years. Dens Solutions answer building challenges with ingenuity.

Fire Resistance

Increased fire resistance beyond regular gypsum board

Hail Resistance

Enhanced resistance to hail

Wind Resistance

Improved wind uplift performance

Special Applications

Specialty application as both cover boards and thermal barriers

SPECS

Physical Properties: 1/4" (6.4 mm) DensDeck® Roof Board
Thickness

Nominal: 1/4″ (6.4 mm) ± 1/16″ (1.6 mm)

Width

Standard: 4′ (1219 mm) ± 1/8″ (3 mm)

Length

standard: 4′ (1219 mm) AND 8′ (2438 mm) ± 1/4″ (6.4 mm)

Weight

lbs/sq. ft. nominal (kg/m²): 1.2 (5.9)1

Flexural Strength

parallel, lbf. Min. (N) ≥40 (178)2

R Value

°F•ft2•hr/BTU (m2•K/W): .283

1Represents approximate weight for design and shipping purposes. Actual weight may vary based on manufacturing location and other factors.

2Tested in accordance with ASTM C473, method B.

3Tested in accordance with ASTM C518 (heat flow meter).

Physical Properties: 1/2" (12.7 mm) DensDeck® Roof Board
Thickness

nominal: 1/2″ (12.7 mm) ± 1/32″ (0.8 mm)

Width

standard: 4′ (1219 mm) ± 1/8″ (3 mm)

Length

standard: 4′ (1219 mm) AND 8′ (2438 MM) ± 1/4″ (6.4 mm)

Weight

lbs/sq. ft. nominal (kg/m²): 2.0 (9.8)1

Flexural Strength

parallel, lbf. Min. (N) ≥80 (356)2

R Value

°F•ft2•hr/BTU (m2•K/W): 0.563

1Represents approximate weight for design and shipping purposes. Actual weight may vary based on manufacturing location and other factors.

2Tested in accordance with ASTM C473, method B.

3Tested in accordance with ASTM C518 (heat flow meter).

Physical Properties: 5/8" (12.7 mm) DensDeck® Fireguard® Roof Board
Thickness

nominal: 5/8″ (15.9 mm) ± 1/32″ (0.8 mm)

Width

standard: 4′ (1219 mm) ± 1/8″ (3 mm)

Length

standard: 4′ (1219 mm) AND 8′ (2438 MM) ± 1/4″ (6.4 mm)

Weight

lbs/sq. ft. nominal (kg/m²): 2.5 (12.2)1

Flexural Strength

parallel, lbf. Min. (N) ≥ 100 (444)2

R Value

°F•ft2•hr/BTU (m2•K/W): 0.673

1Represents approximate weight for design and shipping purposes. Actual weight may vary based on manufacturing location and other factors.

2Tested in accordance with ASTM C473, method B.

3Tested in accordance with ASTM C518 (heat flow meter).

Warranty / Certifications: 1/4" (6.4 mm) DensDeck® Roof Boar
UL Listed Fire RatedCE Mark
Warranty / Certifications: 1/2" (12.7 mm) DensDeck® Roof Board
UL Listed Fire RatedCE Mark
Warranty / Certifications: 5/8" (12.7 mm) DensDeck® Fireguard® Roof Board
UL Listed Fire RatedCE MarkC UL Mark

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