Installation Guide

13
PermaBase brand Flex
®
Cement Board
Easy To Bend, Yet Stays Strong
For installation instructions and accessories, see page 14.
SIZES AND PACKAGING
Size: Thickness, Width and Length # Of Pcs Per Unit
1/2" x 36" x 6' (12.7 mm x 914 mm x 1829 mm) 25
1/2" x 48" x 8' (12.7 mm x 1219 mm x 2438 mm)* 30
* Special Order
When You Want The Best Substrate
That Bends Like No Other:
PermaBase
®
brand Flex
®
Cement Board
This very flexible PermaBase substrate is ideal to use
around archways, columns, beams, or anywhere you
need an evenly curved surface. Consider this also for
radius shower walls, tub step-ups and stair construction
– the possibilities are almost endless.
Resists Moisture Better
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Stays intact when exposed to water: will not rot,
disintegrate or swell – built for the long run

Achieves the industry’s lowest water-absorption
rating (ASTM C 473) – offering better installation

Helps inhibit mold growth with the highest possible
score on mold tests (ASTM D 3273 and ASTM G 21)
Stays Strong Yet Flexes
Like No Other Cement Board

Holds up to the toughest conditions yet bends
like no other

Resists impact and remains dimensionally stable
– extending the life of your project
Installs Fast And Easy

Pre-manufactured panels save you time

Bends easily – 6" radius at 90˚

Reduces jobsite waste – easier, cleaner cut
Offers Best In Class Warranty

Lifetime Limited Warranty: Interior applications
Installation
Installation recommendations for PermaBase Flex are the same as
for PermaBase Cement Board with this exception: framing must be
spaced a maximum of 8"o.c. (See page 14 for more information.)
Limitations
PermaBase Flex has the same limitations as PermaBase with the
following additions:
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For convex surfaces, PermaBase Flex must be applied with the
rough surface and tapered edges exposed.

For concave surfaces, PermaBase Flex must be applied with the
smooth surface exposed.
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PermaBase Flex Cement Board should not be used for fire-rated
assemblies.

Maximum framing spacing should not exceed 8"o.c.

Maximum fastener spacing should not exceed 8"o.c. for wall and
6"o.c. for ceiling applications.