The Blue Board Tile Substrate System

High Performance. 100% Waterproof. Built for Speed.

Why Contractors are Switching to Blue Board™

• 100% Waterproof & Mold Proof: Built with a closed-cell, extruded polystyrene (XPS) core. Blue Board creates an absolute barrier against moisture, completely eliminating the risk of mold, mildew, rot, and subfloor failures.

• High-Efficiency Thermal Protection: The high-density blue insulation core delivers exceptional thermal performance, stopping heat transfer cold and eliminating cold spots under your tile.

• Heavy-Duty Concrete Bonding Layer: Wrapped in a high-strength fiberglass reinforcing mesh fully embedded in a cement-based resin coating. It gives thinset mortar the ultimate mechanical grip for maximum tile adhesion.

• Ultra-Lightweight Structural Strength: Incredibly light and easy to carry up flights of stairs by a single installer. It cuts down labor fatigue while offering the rigid support needed for heavy stone or large-format tile over older, weight-sensitive framing.

• Dust-Free, Utility Knife Cuts: Forget heavy power saws, flying cement shards, and toxic dust masks. Simply score, snap, and install cleanly and precisely with a standard utility knife.

• Universal Mortar & Tile Compatibility: Total design freedom. Blue Board supports any tile size, material, or weight with zero limitations. Use it confidently with any standard cement-based thinset, modified mortar, or grout—no expensive proprietary glues required.

• All-in-One Replacement: Replaces heavy cement boards and messy multi-step liquid membranes. One installation gives you a dead-flat, ready-to-tile surface immediately.

One System. Infinite Versatility.

Available in a wide range of thicknesses and dimensions, Blue Board panels are engineered to replace traditional framing substrates anywhere water meets tile:

• Surfaces: Premium floor underlayment, high-impact wall backing, and moisture-resistant ceilings.

• Fixtures: Waterproof countertop underlayment, tub surrounds, and tub decks.

• Custom Fabrications: Build custom shower seats, benches, floating shelves, and partition walls directly out of the box—with no wood or steel structural framing required. Thick Blue Board panels give you the structural rigidity to fabricate completely custom, tile-ready benches right on the job site.

Ready-to-Tile Waterproof Components

Beyond our standard building panels, we offer pre-fabricated components made with the same legendary Blue Board technology to speed up your installation:

• Pre-Formed Shower Niches: Recessed, sleek storage solutions that seat in minutes with zero risk of corner leaks.

• Bathtub Cladding: Rigid panels designed to wrap, insulate, and finish tub fronts cleanly with zero flex.