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PermaBase
Flex® Cement Board
Description:
PermaBase Flex® BRAND
Cement Board is a polymer-modified cement board reinforced with
an alkali resistant fiber mesh ideal for use around ceilings, beams,
columns, arches and archways, walls and anywhere an evenly curved
surface is required.
Product Literature
(PDF,
541KB)
Features
& Benefits:
- 6" (150 mm) minimum radius for 90°
corners.
- Bends immediately, easily and evenly.
- The only 1/2" lightweight cement board
that bends.
- Can be bent without water saturation or
kerf cuts.
- Easy installation, reduces skilled labor
costs.
- Easy to cut and install with screws.
- Can be used in both interior and exterior
applications.
- Impact resistant with excellent overall
compressive strength characteristics.
- Creates uniform curved surfaces.
- Highly moisture resistant, will not rot,
disintegrate or swell when exposed to water.
- Dimensionally stable.
Limitations:
- 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.
- PermaBase Flex Cement Board should not
be used for fire-rated assemblies.
- Maximum framing spacing should not exceed
8" o.c. and must be designed to limit deflection to less
than L/360 under all live and dead loads.
- Steel framing must be 20 gauge or heavier.
- PermaBase Flex should be used on curved
walls and ceilings. For flat walls and ceilings refer to PermaBase
Cement Board.
- PermaBase Flex Cement Board is vapor permeable
and unaffected by water but is not a water barrier. If the area
behind the backerboard must be kept dry, a separate moisture barrier
or waterproof membrane must be used.
- On exterior installations, a waterproof
membrane must be applied behind PermaBase Flex Cement Board.
- Paper or self-adhesive fiberglass drywall
tape, joint compound and drywall nails or screws should not be
used.
- Maximum fastener spacing should not exceed
8" o.c. for all and 6" o.c. For ceiling applications.
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