Sub-Guard is a lightweight, high-density tile backer board that installs quickly and easily over wood stud framework or existing drywall. The 100% waterproof XPS (extruded polystyrene) is resistant to vapor pressure and inhibits mold formation.

• The XPS core is sandwiched between densely woven mesh and layers of cementitious coating, suitable for installation on walls, counters, and benches.
• Perfect for tub surrounds and walk-in showers.
• Excellent support for large-format tiles.
• Non-deteriorating/non-rotting
• Highly durable and flame retardant.

Details:

• waterproof board
• available in 3'x5'x1/2"
• for wall and floor
• washers and screws sold separately