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DURO-GUARD SECUROCK GLASS-MAT

1/4-INCH ROOF BOARD

Description:
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Duro-Guard Securock Glass-Mat Roof Board is a
high-performance roof board for use in low-slope
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Duro-Last roofing systems. It enhances the durability
of the entire roofing system when used as a cover
board in mechanically attached systems. The
specially treated core and high-performance glass-
mat facer provide protection against fire, mold and
moisture.

 Provides protection to roof system from hail
and foot traffic. Flat Panels:
 Provides excellent fire performance and  Available sizes:
demonstrates exceptional surface burning o 4 ft. x 8 ft.
characteristics (ASTM E84 (CAN/ULC-S102)
Flame Spread 0, Smoke Developed 0). o 4 ft. x 4 ft.
 Uniform water-resistant core ensures excellent o Thickness: 1/4 inch.
moisture and mold resistance. Scored a
maximum "10" for mold resistance on ASTM
D3273.
TABLE 1. PHYSICAL PROPERTIES
 Easy to cut, handle and install.
Flexural Strength,
 Refer to Table 1 for physical properties. Parallel ASTM C 473 40 lbs. min.

Recommended Uses: Flute Spanability ASTM E 661 2-5/8 inches
 Mechanically attached Duro-Last roof systems. Permeance ASTM E 96 18 perms
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 Duro-Bond roof systems.
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R Value ASTM C 518 0.36 ft ·°F·hr/btu
 Metal retrofit roof systems.
-6
Coefficient Of 8.5 x 10
Thermal Expansion ASTM E 831 inches/inch·°F
Underwriters Laboratories, Inc. Classifications:
-6
Linear Variation With 6.3 x 10
 Refer to Duro-Last’s UL Listings Change In Moisture ASTM D 1037 inches/inch·%RH
(TGFU.R10128) for assembly details.
Water Absorption ASTM C 473 10% max.
Factory Mutual Approvals:
Mold Resistance ASTM D 3273 10
 FM 4450, FM 4470.
Compressive 700 – 1,000 psi
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 Refer to FM Approval’s RoofNav for details on Strength
FM Approved systems (www.roofnav.com).
Bending Radius 4 ft.
Weight 1.2 lbs./sq. ft.

www.duro-last.com 1 of 2 800-248-0280
Duro-Last, Duro-Guard, Duro-Grip, Duro-Bond and “World’s Best Roof” are registered marks owned by Duro-Last, Inc. Weather-Tite is a registered mark owned by Millenium Adhesive Company.
Securock is a registered mark owned by USG Corporation. RoofNav is a registered mark owned by FM Global. Olybond500 is a registered mark owned by OMG, Inc.
Created: 01/12/2015 Revised: 05/07/2015