PRODUCT DESCRIPTION
The board is a cementitious, fiber- facings reinforced construction product. The core is made of a mixture of polystyrene beads, sand, and Portland cement. An alkali-resistant mesh is bonded to the surface of each side to give flexural strength. It is cured in a moist environment to insure sufficient strength development.
PRODUCT DETAILS
Trade Name
PermaBase® , or UNIPAN®, or DuraBacker™.
Types Of Facing
Alkali resistant fiberglass mesh
The bottom mesh is embedded in cement slurry and the top mesh is mechanically embedded into the core.
Cement slurry: The slurry is a mixture of water, cement, and other additives.
Type Of Core
The core is made of a mixture of cements, polystyrene beads, sand/aggregates, water, and other additives.
Sizes
Nominal thickness = 1/2"
Minimum for 1/2"; not less than 0.480 (Excluding tapered edge)
Greater thicknesses are allowed.
Typical size: 3'x5' or 4'x8' (other dimensions available on special order)
Weight
3.00 +/- 0.17 lbs./ sq. ft. (based on 1/2" thickness)
PermaBase® * Cement Board.
UNIFIX®* UNIPAN®* Cement Board.
DuraBacker™
CLASSIFIED AS TO SURFACE BURNING CHARACTERISTICS
Cement Board
Flame Spread 0
Smoke Developed 0
*Registered Trade Marks of National Gypsum Co.
HEAT SHIELDS
Heat Shield, Model Nos. PermaBase® Cement Board, UNIFIX® UNIPAN®* Cement Board, DuraBacker™.
*Registered Trade Marks of National Gypsum Co.
* A representative sample of the listed devices have been tested, investigated and found to comply with the requirements of the standard(s) for Heat Shields (CAN/ULC-S632) and are identified with the Warnock Hersey Listed Mark.
