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National Gypsum

1/2-Inch 3 x 5-Foot PermaBase Brand Cement Board


A rigid substrate made of Portland cement, aggregate and glass mesh. It provides a hard, durable surface that is able to withstand prolonged exposure to moisture. An ideal underlayment for interior applications such as shower and tub enclosures, countertops and floors as well as exterior applications such as stone and/or thin brick.

WARNING: This product can expose you to chemicals including Carbon black (airborne, unbound particles of respirable size), which is known to the State of California to cause cancer. For more information, go to

Length5 ft
Thickness1/2 in
Width3 ft

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