Technical Specifications

TECHNICAL DATA
PermaBASE
®
Cement Board
Physical Properties 1/2" PermaBASE 5/8" PermaBASE
Thickness
1
, Nominal 1/2" (12.7 mm) 5/8" (15.9 mm)
Weight, Nominal 2.9 lbs./sq. ft. (14.2 k/m
2
) 3.65 lbs./sq. ft. (17.8 k/m
2
)
Edges Round Round
Flexural Strength
8
≥ 750 psi ≥ 750 psi
Fastener Holding
1
(Wet and Dry) ≥ 90 lbs. ≥ 90 lbs.
Freeze/Thaw Cycles
10
> 100 > 100
Compressive Strength
11
1,250 psi 1,250 psi
Wind Load
12
(Studs 16" o.c.) 40 psf 40 psf
Bending Radius 5' (1,524 mm) 5' (1,524 mm)
Thermal Resistance
3
R = .37, K = 2.7 R = .47, K = 2.7
Permeance
4
> 10 perms > 10 perms
Water Absorption
9
(% of Weight) < 8% < 8%
Falling Ball Impact
7
(12" Drop) Pass Pass
Linear Expansion with Change Moisture
7
≤ 0.07% ≤ 0.07%
Mold Resistance
5
, (ASTM D3273) Score of 10 Score of 10
Mold Resistance
6
, (ASTM G21) Score of 0 Score of 0
Shear Bond Strength – 7 Days (ANSI A118.4)
Latex-Portland Cement Mortar 241 psi 241 psi
Product Standard Compliance ASTM C1325 ASTM C1325
Fire-Resistance Characteristics
Core Type N/A N/A
UL Type Designation PermaBASE PermaBASE
Surface Burning Characteristics2 Class A Class A
Flame Spread
2
0 0
Smoke Development
2
0 0
Applicable Standards and References
ANSI A118.9 Test Methods and Specication for Cementitious Backer Units
ASTM C473 Standard Test Methods for Physical Testing of Gypsum Panel Products
ASTM C518 Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus
ASTM C666 Standard Test Method for Resistance of Concrete to Rapid Freezing and Thawing
ASTM C947 Standard Test Method for Flexural Properties of Thin-Section Glass-Fiber-Reinforced Concrete (Using Simple Beam with Third-Point Loading)
ASTM C1325 Standard Specication for Fiber-Mat Reinforced Cementitious Backer Units
ASTM D1037 Standard Test Methods for Evaluating Properties of Wood-Base Fiber and Particle Panel Materials
ASTM D2394 Standard Test Methods for Simulated Service Testing of Wood and Wood-Base Finish Flooring
ASTM D3273 Standard Test Method for Resistance to Growth of Mold on the Surface of Interior Coatings in an Environmental Chamber
ASTM E84 Standard Test Method for Surface Burning Characteristics of Building Materials
ASTM E96 Standard Test Methods for Water Vapor Transmission of Materials
ASTM E330 Standard Test Method for Structural Performance of Exterior Windows, Doors, Skylights and Curtain Walls by Uniform Static Air Pressure Dierence
ASTM G21 Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi
PermaBASE Building Products, LLC Manufacturer Standards, NGC Construction Guide
1. Specied values per ASTM C1325, tested in accordance with ASTM C473.
2. Tested in accordance with ASTM E84.
3. Tested in accordance with ASTM C518.
4. Tested in accordance with ASTM E96.
5. Tested in accordance with ASTM D3273.
6. Tested in accordance with ASTM G21.
7. Specied values per ASTM C1325, tested in accordance with ASTM D1037.
8. Specied values per ASTM C1325, tested in accordance with ASTM C947.
9. Tested in accordance with ASTM C473, 24-hour immersion.
10. Per ANSI A118.9 procedure B. Tested in accordance with ASTM C666.
11. Tested in accordance with ASTM D2394.
12. Tested in accordance with ASTM E330.
2