Cement Board

National Gypsum Permabase or USG Durock permabase

  • Rigid substrate made of Portland cement, aggregate and fiberglass mesh.
  • Suited as underlayment for tub and shower surrounds, countertops, flooring and other interior and exterior applications.
  • Highly moisture resistant. Will not rot, disintegrate or swell when exposed to water.
  • 30-year limited warranty on interior applications. 10-year limited warranty on exterior applications.
  • Cut with utility knife and straight edge.

HardieBacker hardiebacker_quarterinch

  • 90% Portland cement and ground sand. Contains no asbestos, glass mesh, formaldehyde, or gypsum.
  • Lightest cement board available. Cuts easily.
  • Features exclusive EZ Grid recessed fastener pattern to make installation easier.
  • Provides superior protection agains moisture damage and mold growth.
  • Non-combustible.
  • Limited lifetime product warranty.