Cement Board

PermaBASE® Cement Board

A durable surface designed to withstand prolonged exposure to moisture.

Resources

3-Part Guide Specs

Literature

Submittals

Submittal Builder

The professional’s choice

Lightweight and easy to install

  • Moisture & Mold Resistant
  • EdgeTech® Reinforced Edge
  • Easy to Cut
  • Interior and Exterior Use

PermaBASE® Cement Board provides a durable surface designed to withstand prolonged exposure to moisture. Made with Portland cement, aggregate, and fiberglass mesh, it works well as an underlayment for tub and shower surrounds, countertops, flooring, and a variety of other interior and exterior applications. Lightweight and easy to install, our EdgeTech® Technology allows a closer nail or screw application.

Advantages

  • Stays intact when exposed to water; will not rot, disintegrate, or swell.
  • Achieves the industry’s lowest water-absorption rating (ASTM C473).
  • Helps inhibit mold growth with the highest possible score on mold tests (ASTM D3273 and ASTM G21).
  • Resists impact and remains dimensionally stable.
  • Holds up to toughest conditions.
  • Lightweight and easy to cut – speeds up installation and reduces job site waste.
  • Durable substrate for direct-applied coating systems.
  • Meets UL classifications for one-and two-hour fire-rated assemblies.
  • Building code approved – one substrate that does the job of many.
  • Lifetime Limited Warranty for Interior applications.
  • 15-year Limited Warranty for Exterior applications.

PermaBASE® Cement Board has achieved GREENGUARD Gold Certification.

Specifications

Products that suit any project criteria

Product Details

Applications:

Shower, Sauna / Steam Room, Heat Shield, Kitchen, Fireplace, Floors, Bathtub, Accent Wall, Outdoor Living, Continuous Insulation, Cement Board Masonry Veneer, Cement Board Stucco

Edge(s):

EdgeTech® Reinforced Edge

Thickness(es):

1/2", 5/8"

Width(s):

32", 36", 48"

Interior FAQs

Your interior applications questions answered

Corrosion resistant screw or galvanized roofing nails. Strongly suggest PermaBASE™ Cement Board Screws since they do not have nibs like competitor screws.

2” Alkali resistant mesh tape and mortar mix.

Long enough to go into woods studs ¾” and metal framing 3/8” (min. three threads).

For all interior applications. For exterior jobs, PermaBASE® Cement Board should always be installed over a primary sheathing.

16” o.c. for wood and metal.

Every 8” o.c. along the perimeter and field of board.

Exterior FAQs

Ready to answer your questions for exterior applications

Corrosion resistant screw or galvanized roofing nails. Strongly suggest PermaBASE™ Cement Board Screws since they do not have nibs like competitor screws.

4” wide alkali-resistant PermaBASE™ Cement Board Tape for all exterior applications.

Long enough to go into woods studs ¾” and metal framing 3/8” (min. three threads).

Low rise residential or commercial applications. Higher heights may be approved by a design professional.

Both methods are approved as long as you stagger the joints.

Related Resources

Product details and technical documentation

Drop-In Specs

HPDs

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Technical Resources

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National Gypsum Company is the exclusive service provider for products manufactured by PermaBASE Building Products, LLC.