Waterproof Tile Backer Board

100% Closed-Cell XPS Core

The extruded polystyrene core has a water absorption rate of under 0.1% by volume. This prevents water migration, core swelling, and structural delamination without requiring additional waterproof coatings on the board itself.

Dual-Sided Polymer & Fiberglass Reinforcement

Both surfaces are coated with polymer-modified cement mortar reinforced with alkali-resistant fiberglass mesh. This creates a rough, high-friction mechanical bonding surface for thin-set tile adhesives, preventing tile slip or debonding under heavy loads.

High Compressive Strength

The rigid sandwich structure supports heavy tile finishes and high point loads without crushing or flexing, eliminating the movement that causes grout cracking on floors and walls.

Built-In Thermal Insulation

The XPS foam core acts as a thermal barrier, significantly reducing heat transfer through walls and concrete slabs. This makes it an ideal substrate for underfloor heating systems, reflecting heat upward into the room rather than wasting energy downward.

Ultra-Lightweight & Ergonomic

Weighing up to 75% less than traditional cement or calcium silicate boards, a single worker can easily carry, cut, and position large panels. This dramatically reduces handling fatigue, injury risks, and container freight costs.

Fast, Dust-Free Installation

Panels can be scored with a standard utility knife and snapped cleanly to size without generating hazardous concrete dust or requiring noisy power saws.

Inherent Mold and Rot Resistance

Containing no organic materials such as wood fibers or paper facings, the board provides zero nutrients for mold, mildew, or fungus growth in continuously damp environments.