DensDeck® Roof Board

Georgia-Pacific offers three solutions for high-performance protection with DensDeck® Roof Board, DensDeck® Prime Roof Board and DensDeck® StormX™ Prime Roof Board.

Overview

Four Dimensions of Protection

Lasting protection from costly damage and wear.

Choosing the right cover board materials for your structure can both boost the integrity of your commercial building and also provide solid defense against the most common forms of damage and wear. DensDeck® Roof Board helps provide lasting protection against four dimensions; fire, wind, puncture, and hail.

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Benefits

Redefine Performance with DensDeck® Roof Board

A recent study found that adding a cover board to a single-ply membrane roof increased its median life expectancy, reduced maintenance costs, and significantly boosted the percentage of roofs meeting their full life expectancy.

Cost Savings

Owners using a cover board as part of their low-slope commercial roof assembly saved an average of $1.40 per square foot in O&M costs over the roof’s lifetime.¹

Long Lasting

Roofs with a cover board met owners life expectancy nearly twice as often as roofs without a cover board (86% vs. 52%).¹

4 Years Longer

The median life expectancy of a commercial roof using a cover board increased by four years.¹

A recent FMI study found that using a cover board on a single-ply membrane roof increased the median life expectancy by four years, reduced operation and maintenance costs by an average of $1.40 per square foot over a 20-year lifespan and increased the percentage of roof assemblies (86% to 52%) that met their full life expectancy, in each case as comparted to a single-ply membrane roof without a cover board. ¹ FMI Roof Cover Board Survey completed in May 2020. Actual results may vary.

¹FMI roof cover board survey completed in May 2020. Actual results may vary.

Advantages

Design

Advanced technology meets intelligent design. DensDeck® Roof Board has proven toughness and versatility, offering fire resistance, strength and dimensional stability.

Fire Resistance

Wind-Uplift Resistance

Puncture Resistance

Hail Resistance

Non-Combustible Gypsum Core

DensDeck® Roof Board slows flame and smoke spread.

0 Flame Spread and 0 Smoke Development when tested in accordance with ASTM E84 and CAN/ULC-S102.
UL Classified for resistance to external fire sources [per ANSI/UL 790 and CAN/ULC-S114].
UL Classified for resistance to fires below roof [per ANSI/UL 1256].

Board Strength and Mat to Core Bond

DensDeck® Roof Board gives you a rigid base of support in high winds.

Improves roof’s ability to resist wind uplift.
In adhered assemblies, DensDeck® Prime Roof Board increases membrane bond strength compared to paper-faced insulation or no coverboard.
Improves fastener pull through performance compared to rigid insulation, high density insulation cover boards, or no cover boards.

Rigid Board Protection for Membrane and Insulation

DensDeck® Roof Board displays superior puncture and impact resistance, protecting single ply membranes better than HD Iso boards or systems with no cover board.

Resists impact from repeated events such as maintenance foot traffic.
Helps relieve static pressure caused by the weight of rooftop equipment.
Helps defend against dynamic impact from flying debris.

Strength of Gypsum Core with Fiberglass Mat Reinforcement

DensDeck® Roof Board stands strong against repeated hail strikes.

FM classified for Severe Hail (SH)
DensDeck® Prime Roof Boards are included in more FM (VSH) approved multi-ply assemblies than any other coverboard.¹
DensDeck® StormX™ Prime Roof Board was the first gypsum cover board FM classified for VSH in approved single-ply assemblies.¹

¹ Consult RoofNav for FM-approved and VSH assemblies with DensDeck® prime and DensDeck® StormX™ Prime Roof Boards.

Products

DensDeck® Roof Board Solutions

Find the right cover board for your project needs.

DensDeck® Roof Board

Georgia-Pacific redefined roof boards in 1987 with DensDeck® Roof Board. This innovative cover board provides stronger puncture protection and is non-combustible as a result of its gypsum core.

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DensDeck® Prime Roof Board

Building on the legacy of DensDeck® Roof Board, DensDeck® Prime Roof Board offers even more strength and superior mat to core bond on both sides of the board.

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DensDeck® StormX™ Prime Roof Board

With enhanced hail, wind and puncture resistance that defies the most extreme weather, DensDeck® StormX™ Prime Roof board is FM Classified for very severe hail (VSH) in approved single-ply membrane assemblies.

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Comparison

DensDeck® Testing Series

See how DensDeck® Roof Board can help mitigate risks from the most common forms of roof damage like punctures and foot traffic, to extreme weather events like severe winds and hail.