1/2 in. DensDeck gypsum roof cover board (4 ft. x 8 ft.)

Mule-Hide DensDeck is a rigid, glass-mat faced gypsum roof board used as a cover board, thermal barrier, or substrate in commercial low-slope roofing assemblies. Its noncombustible construction helps improve fire performance while adding durability and puncture/foot-traffic resistance over the roof deck.

Key Features:

Commercial Roof Cover Board: Rigid gypsum roof board for use as a cover board, thermal barrier, or substrate board in low-slope roof systems.
Durable Glass-Mat Faced Construction: Fiberglass mats bonded to a high-density gypsum core help resist job-site damage and deterioration versus paper-faced boards.
Enhanced Puncture & Foot-Traffic Resistance: Helps protect roofing assemblies from maintenance traffic and dropped tools.
Fire Performance: Noncombustible; tested to ASTM E84 with 0 flame spread and 0 smoke developed.
Standard Sheet Size: 4 ft. x 8 ft. panel format for common commercial roofing layouts.

Specifications Table:

Specification	Details
Product name	MH 1/2″ Densdeck 4X8
Manufacturer SKU	62MHDD1248
Category	Insulation & Weatherproofing
Sub-category	Roof Cover Boards
Unit of measure	Sheet (SH)
Nominal thickness	1/2 in (12.7 mm)
Nominal size	4 ft x 8 ft
Length	8 ft (2438 mm) 1/4 in (6.4 mm)
Width	4 ft (1219 mm) 1/8 in (3 mm)
Item weight	62.4 lb
R-value	0.28 (Ffthr/BTU) (mK/W)
Compressive strength (nominal)	900 psi
Flexural strength, parallel (min.)	40 lbf (178 N)
Permeance	>50 perms (>2850 ng/Pasm)
Water absorption (max.)	<10%
Surface water absorption (nominal)	<2.5 grams
Humidified deflection	1/8 in (3 mm)
Mold resistance	10/10
Flame spread/smoke developed (ASTM E84)	0/0
Flute spanability	2-5/8 in (67 mm)
Bending radius	5 ft (1524 mm)
Linear variation with change in temperature	8.5 x 10^-6 in/in/F (15.3 x 10^-6 mm/mm/C)
Linear variation with change in moisture	6.25 x 10^-6
Applicable standards (as listed)	ASTM C1177; ASTM C473; ASTM E661; ASTM E96; ASTM C518

Frequently Asked Questions (FAQ):

Q: What is this board used for?
A: Its used in commercial low-slope roof assemblies as a cover board, thermal barrier, or substrate board under roofing membranes.

Q: What are the panel dimensions and thickness?
A: This item is a 1/2 in. thick panel in a 4 ft. x 8 ft. sheet size.

Q: Is it fire-rated/noncombustible?
A: YesDensDeck is described as noncombustible and reports 0/0 (flame spread/smoke developed) when tested to ASTM E84.

Q: How durable is it for rooftop foot traffic?
A: It is designed to resist punctures from maintenance foot traffic and dropped tools and provides improved flute-spanning stiffness.

Q: How much does one sheet weigh?
A: A listed item weight is 62.4 lb per board (confirm handling requirements for your jobsite and system design).

A Quiet Backbone for High-Performance Rooflines

Think of this DensDeck panel as the invisible couture layer in a roof assemblysleek, disciplined, and relentlessly hardworking. Its glass-mat faced gypsum body brings a refined resilience that stands up to traffic, tools, and time, while reinforcing the system beneath the membrane. Use it to elevate the performance of a low-slope roof with a clean, confident substrate that feels purpose-built and enduring. Its the kind of foundational material that makes luxury feel effortlessbecause true luxury starts with what you dont see.

Choose Mule-Hide 1/2 in. DensDeck 4×8 to add a tougher, more fire-conscious cover board layer to your commercial low-slope roofing assembly.

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