KERDI-BOARD 1/2-in Foam Backer Board, 32 x 48 in

Lightweight, waterproof KERDI-BOARD is an extruded polystyrene foam backer board for creating flat, level, plumb substrates ready for tile. With fleece webbing on both sides, it bonds securely with thin-set mortar and replaces traditional gypsum or cement backer boards in wet areas.

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Key Features:

• Waterproof and Thermally Insulating: XPS foam core with reinforced faces resists moisture and helps reduce thermal bridging.
• Ready-to-Tile Surface: Fleece webbing on both sides ensures strong thin-set mortar adhesion for tile installations.
• Lightweight, Rigid Construction: Even, impact-resistant panels are easy to cut with a utility knife and handle on site.
• Versatile Use: Ideal for showers, tub surrounds, countertops, vanities, shelving, and custom building elements.
• Dust-Free Installation: Contains no cement or fiberglass, minimizing mess during cutting and fitting.

Please check the Product Data Sheet Here

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Specifications Table:

Specification	Details
Panel material	Extruded polystyrene foam (XPS) with reinforcement and fleece webbing on both sides
Dimensions	0.5 in (12.5 mm) thick x 32 in x 48 in
Waterproofing	Suitable for bonded waterproofing assemblies when seams and joints are properly treated
Installation	Cut with utility knife; set and tile with thin-set mortar
Intended use	Interior applications only
Features	Lightweight, rigid, impact-resistant; thermally insulating; dust-free (no cement or fiberglass)

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Frequently Asked Questions (FAQ):

Q: Can KERDI-BOARD be used in exterior applications?
A: No. It is intended for interior applications only.

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Q: How is the board cut to size?
A: Score with a utility knife using the printed gridlines as a guide, then snap to break cleanly.

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Q: Do I need a separate waterproofing membrane?
A: When seams and fastener penetrations are properly treated, KERDI-BOARD serves as part of a bonded waterproofing assembly ready for tile.

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Q: What mortar should be used to set tile on KERDI-BOARD?
A: Use thin-set mortar appropriate for the tile and substrate per Schluter installation guidelines.

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Q: What thickness is this panel?
A: This listing is for 1/2 inch (12.5 mm) thickness, 32 in x 48 in panels.

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Sculptural Structure Meets Seamless Waterproofing

KERDI-BOARD brings a tailored precision to wet spaces, transforming walls and benches into clean, architectural planes ready for tile. I love the subtle grid—an elegant guide that makes custom forms and crisp lines effortless. Wrap a shower bench or craft a floating vanity, then cloak it in stone or porcelain for a refined, spa-like finish. It’s the quiet backbone of luxurious, high-performance bathrooms.

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Build your next shower or feature with KERDI-BOARD and enjoy a faster, cleaner, waterproof foundation ready for tile.