USG Fiberock® Brand Tile Backerboard and Underlayment panels are manufactured from an environmentally sustainable, specially engineered combination of synthetic gypsum and cellulose fibers.

What is Fiberock made of?

USG Fiberock® Brand Tile Backerboard and Underlayment panels are manufactured from an environmentally sustainable, specially engineered combination of synthetic gypsum and cellulose fibers.

Is Fiberock good for shower walls?

Fiberock is not meant for shower walls. … Inside a shower, Durock should be used. As for the waterproofing, you either do a vapor barrier behind the Durock, or you Waterproof the Durock on the front w/a paint on membrane.