How to Guide

7
Fasteners
PermaBase corrosion resistant
screws or equivalent, 1-1/4" or
1-5/8" long, for use with wood
framing. Type S-12 screws or
equivalent, 1-1/4" or 1-5/8"
long, for use with 20 gauge or
heavier steel framing.
Galvanized roofing nails, 1-1/2"
long with hot dipped galvanized
coating for use with wood framing.
Nails should meet Federal
Specification #FF-N105B/type 2
style 20.
Joint Reinforcement
PermaBase mesh tape must be used
on all edges and cuts made to size.
Use 2" wide polymer-coated (alkali
resistant) mesh tape for interior
applications and 4" wide polymer-
coated (alkali resistant) mesh tape
for exterior applications.
Bonding Materials
Treat joint and set facing material,
preferably with latex-Portland
cement mortar or with dry-set
(thin-set) mortar. All mortars
should comply with ANSI A118.1,
A118.4 or A118.15 standards.
Type 1 organic adhesive meeting
ANSI A-136.1 may be utilized for
interior use only.
Installation Accessories
For a seamless installation, we recommend PermaBase Tape and PermaBase Screws.
* When tested by an independent laboratory per ASTM D 3273 (“Standard Test Method for Resistance
to Growth of Mold on the Surface of Interior Coatings in an Environmental Chamber”), PermaBase
achieved a panel score of 10, the highest score possible, indicating no mold growth under the labora-
tory test conditions. The use of PermaBase 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.
* Special Order
Property Method Test 1/4" 7/16" 1/2" 5/8"
PLUS
Water Absorption % ASTM C 473 <8 10 <8 <8
By Weight/24 Hours
Flexural Strength (psi) ASTM C 947 >1750 750 750 >1000
Fastener Holding ASTM D 1037 >85 >90 >90 >90
(Wet And Dry, lbs.)
(0.400" head diameter)
Weight (psf) ASTM C 473 1.8 2.1 2.9 3.65
Freeze/Thaw (Cycles) ASTM C 666 100 100 100 100
Per ANSI A118.9
Procedure B
Flame Spread/ ASTM E 84 0/0 0/0 0/0 0/0
Smoke Developed
Compressive Strength ASTM D 2394 N/A N/A 2250 2250
(psi) (Indentation)
Wind Load (psf, Studs 16"o.c.) ASTM E 330 N/A 30 40 40
Thermal “R”/k Value Property of Material 0.28/2.7 0.28/2.7 0.37/2.7 0.47/.2.7
Bending Radius (ft.) Property of Material N/A 5 5 5
Falling Ball Impact ASTM D 1037 pass pass pass pass
(12" Drop)
Linear Variation (Due to ASTM D 1037 <0.07% 0.05% 0.05% 0.05%
change in moisture content)
Fungus Resistance ASTM G 21 No growth No growth No growth No growth
Mold Growth On Surface ASTM D 3273* 10 10 10 10
PHYSICAL PROPERTIES
Size: Thickness, Width And Length # Of Pcs Per Unit
PermaBase Cement Board
1/2" x 32" x 5' (12.7 mm x 813 mm x 1524 mm) 50
1/2" x 32" x 8' (12.7 mm x 813 mm x 2438 mm) 50
1/2" x 36" x 4' (12.7 mm x 914 mm x 1219 mm) 50*
1/2" x 36" x 5' (12.7 mm x 914 mm x 1524 mm) 50
1/2" x 36" x 6' (12.7 mm x 914 mm x 1829 mm) 50*
1/2" x 36" x 8' (12.7 mm x 914 mm x 2438 mm) 30
1/2" x 48" x 8' (12.7 mm x 1219 mm x 2438 mm) 30
5/8" x 36" x 5' (15.9 mm x 914 mm x 1524 mm) 35
5/8" x 48" x 8' (15.9 mm x 1219 mm x 2438 mm) 24
3/8" x 48" x 8' (9.5 mm x 1219 mm x 2438 mm) 40*
3/8" x 36" x 5' (9.5 mm x 914 mm x 1524 mm) 50*
3/4" x 48" x 8' (19.0 mm x 1219 mm x 2438 mm) 20*
PermaBase Underlayment
1/4" x 48" x 4' (7.9 mm x 1219 mm x 1219 mm) 60
1/4" x 36" x 5' (7.9 mm x 914 mm x 1524 mm) 60
SIZES AND PACKAGING