Tile Backer Board
Grenrite XPS Tile Backer Board is a rigid, waterproof substrate designed for ceramic tile, stone and mosaic installations in wet areas. It combines a high-density closed-cell XPS core with reinforced polymer-modified cementitious facings to provide a stable, lightweight and tile-ready surface.
The board is designed for use in bathrooms, shower areas, wet rooms and other interior applications where moisture resistance and a reliable tile substrate are required. Its lightweight construction makes it easy to cut, handle and install, while the rigid composite structure provides a stable base for tile and stone finishes.
Why Tile Backer Board
A reliable tile substrate is essential in areas exposed to regular moisture. Grenrite Tile Backer Board is engineered as a waterproof, rigid and lightweight alternative to conventional tile substrates, combining an XPS core with reinforced cementitious facings in a single composite board.
The closed-cell XPS core provides resistance to water absorption and contributes to thermal insulation, while the reinforced cementitious surface provides a suitable base for tile and stone installation when used with compatible tile adhesives and installation systems.
The board can be cut and processed with common construction tools, helping installers achieve accurate fitting around walls, corners, pipes and other details. Its lightweight construction also simplifies handling and transportation compared with heavier cement-based boards.
Key Benefits
Water Resistant
Closed-cell XPS core provides a water-resistant substrate for wet-area construction.
Tile-Ready Surface
Reinforced cementitious facings provide a suitable surface for compatible tile and stone installation systems.
Lightweight
Easy to carry, cut and handle during installation.
Rigid & Stable
Composite construction provides a stable substrate for tile finishes.
Thermal Insulation
The XPS core contributes to thermal insulation performance.
Easy to Process
Can be cut and shaped with commonly used construction tools.
Typical Applications
Grenrite Tile Backer Board is suitable for a range of interior wet-area and tile substrate applications, including:
- Shower walls
- Bathroom walls
- Wet rooms
- Tile substrates
- Areas around bathtubs and shower enclosures
- Residential and commercial interior renovation
Technical Specifications
| Parameter | Value |
|---|---|
| Density | ≥35 kg/m³ |
| Compressive Strength | ≥250 kPa |
| Thermal Conductivity | ≤0.030 W/(m·K) |
| Water Absorption | ≤1.0% |
| Water Vapor Permeability | ≤3.0 ng/(Pa·s·m²) |
| Tensile Bond Strength | ≥0.46 MPa |
| Shear Strength | ≥522 kPa |
| Impact Resistance | ≥10 J |
| Dimensional Stability | ≤0.06% |
| Fire Performance | Available upon request |
Detailed values are provided per specification on request.
Available Sizes
| Metric | |
|---|---|
| Sizes | Thickness |
| 1200 × 600 mm | 8 mm |
| 1200 × 900 mm | 10 mm |
| 1800 × 900 mm | 12 mm |
| 2400 × 600 mm | 20 mm |
| 2400 × 1200 mm | 30 mm |
| Imperial | |
| Sizes | Thickness |
| 4 × 2 ft | 0.315" |
| 4 × 3 ft | 0.394" |
| 6 × 3 ft | 0.472" |
| 8 × 2 ft | 0.787" |
| 8 × 4 ft | 1.181" |
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Waterproofing Accessories
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