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ManualsBrandsPermabase ManualsBuilding materials1/2 in. x 3 ft. x 5 ft. Cement Board

Construction Guide | 7

PHYSICAL PROPERTIES

Property Method Test 1/4” 1/2” PLUS 1/2” 5/8”

Water Absorption % By Weight/24 Hours ASTM C473 <8 <10 <8 <8

Flexural Strength (psi) ASTM C947 >1750 >750 >750 >750

Fastener Holding (Wet And Dry, lbs.) (0.400” head diameter) ASTM D037 >85 >90 >90 >90

Weight (psf) ASTM C473 1.8 2.4 2.9 3.65

Freeze/Thaw (Cycles) ASTM C666 100 100 100 100

Flame Spread/Smoke Developed ASTM E84 0/0 0/0 0/0 0/0

Compressive Strength (psi) (Indentation) ASTM D2394 N/A N/A 1450 1250

Wind Load ASTM E330 N/A 30 40 40

Thermal “R”/ k Value Property of Material 0.2/2.7 0.28/2.7 0.37/2.7 0.47/2.7

Linear Variation (Due to Change in Moisture Content) ASTM D1037 <0.07% <0.05% <0.05% <0.05%

Fungus Resistance ASTM G21 (No Growth) (No Growth) (No Growth) (No Growth)

Mold Growth On Surface ASTM D3273* 10 10 10 10

Shear Bond Strength (7 Days psi) Modified Dry-Set Cement Mortar ANSI A118.4 >50 >50 >50 >50

*When tested by an independent laboratory per ASTM D3273 (“Standard Test Method for Resistance to Growth of Mold on the Surface of Interior Coatings in an

Environmental Chamber”), PermaBASE Cement Board achieved a panel score of 10, the highest score possible, indicating no mold growth under the laboratory test

conditions. The use of PermaBASE Cement Board in actual installations may not produce the same results as were achieved in controlled laboratory conditions. No

material can be considered “mold proof,” nor is it certain that any material will resist mold indefinitely.

Physical Feature Benets PermaBASE Cement Boards Other Cement Boards Fiber Cement Boards

Low-Weight Glass-Mesh Cement Board

•• – –

Reinforced Edge •• – –

Fastens Near Edge With No Breakout •• – –

Highest Damage Resistance From Handling •• – –

Cleanest To Score And Snap •• – –

Lowest Water Absorption •• – –

Meets 40-psf Rating Wind-Load Test Results (Stud spacing 16” o.c.) •• – –

Cuts With Utility Knife Vs. Power Tools •• – –

Standard Fasteners Countersink Into Board •• •• –

Can Be Used In Both Residential and Commercial Steam Rooms And Saunas •• •• –

Inorganic Vs. Organic Core •• •• –

Lifetime Limited Warranty For Interior Use •• •• –

15-Year Warranty For Exterior Use •• – –

• • Standard Feature – Nonstandard Feature

What Sets PermaBASE Products Apart From the Rest?