Foam Tile Backer

PermaBASE™ Foam Tile Backer

Waterproof tile backer board designed for interior tile and stone applications.





Lightweight and durable

Designed for interior tile and stone applications
  • Waterproof
  • Lightweight
  • Easy to Cut
  • Quick Installation

PermaBASE™ Foam Tile Backer is an exceptionally lightweight, durable waterproof tile backer board designed for interior tile and stone applications. It is ideally suited for walls, showers, tub surrounds, backsplashes, floors and countertops.


  • Waterproof tile backer prevents water from causing harmful damage.
  • Passes ANSI A118.10 for waterproofness.
  • Mold resistant per UL 2824.
  • Made from a high-density foam with specially coated facers.
  • Ultra-lightweight, yet durable enough for demanding applications.

Interior Applications

Video: Shower Installation with PermaBASE Foam Tile Backer



Products that suit any project criteria

Product Details


Shower, Kitchen, Floors, Bathtub







Frequently Asked Questions

Ready to answer your product and installation questions

What makes PermaBASE™ Foam Tile Backer waterproof?

A coated fiberglass facer and waterproof foam core provide the waterproof performance to meet ANSI A118.10 requirements for waterproofness.

What do I tape the Foam Tile Backer joints with?

2” Alkali resistant mesh tape and modified tile mortar.

How do I create a waterproof installation?

All joints and fastener heads must be treated with waterproofing material to complete the waterproof installation.

What kind of fasteners do I use to install PermaBASE™ Foam Tile Backer?

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

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Expert Connection

Expert Connection

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