Custom Size Waterproof Backer Board
Custom Size Waterproof Tile Backer Board | Direct Manufacturer & Bulk Supplier
Our custom-size waterproof tile backer board is engineered specifically for global building material distributors, wholesalers, and large-scale construction contractors who demand precision dimensions, reliable moisture protection, and reduced on-site installation labor.
Standard-size boards frequently lead to on-site cutting waste, disposal costs, and alignment delays. As an experienced direct manufacturer, we eliminate these inefficiencies by producing boards strictly to your exact project specifications—including tailored lengths, widths, thicknesses, and pre-cut specialty shapes. This helps you optimize material yield, streamline logistics, and accelerate project delivery.
Constructed with a high-density Extruded Polystyrene (XPS) or advanced composite waterproof core, reinforced with alkali-resistant fiberglass mesh and a durable polymer-modified cementitious coating, these boards provide a dimensionally stable, high-strength substrate for ceramic, porcelain, natural stone, and large-format tiles in high-moisture environments.
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Key Performance & Manufacturing Advantages




1. Precision Custom Sizing (Reduced Waste & Labor)
Standard boards rarely match complex architectural layouts, causing unnecessary offcuts and labor overhead. Our advanced manufacturing lines produce exact dimensions directly at the factory.
Customization Range: Customized lengths, widths, thicknesses, and specialized pre-cut profiles for niches, curbs, or curved walls.
Commercial Value: Significantly lowers on-site labor hours spent trimming, maximizes material utilization for large developments, and minimizes transit/packaging waste.
OEM & Private Label (ODM) Support: Comprehensive branding solutions including custom carton printing, barcode labeling, and export-grade packaging tailored to support your distribution brand.
2. High-Performance Moisture Protection
Moisture penetration behind tiled surfaces causes efflorescence, mold growth, grout breakdown, and ultimate structural substrate failure.
Ultra-Low Water Absorption: Features a closed-cell structural core with a water absorption rate of under 0.1% by volume, blocking moisture entirely.
Substrate Safeguard: Acts as an impenetrable waterproofing barrier, protecting underlying timber or concrete framing in wet zones without requiring additional liquid waterproofing membranes on the board surface for standard applications.
3. Superior Compressive Strength & Tile Adhesion
A professional-grade backer board must withstand heavy point loads without deflection to prevent cracked tiles and failing grout lines.
Surface Bond Strength: The polymer-modified cement face delivers exceptional pull-off adhesion strength for thin-set mortars, fully compliant with ANSI A118.4 / ISO 13007 industry standards.
Versatile Finishes: Fully compatible with porcelain tiles, natural stone (marble, granite, travertine), heavy mosaic sheets, and Large-Format Thin Porcelain Panels (LTP).
4. Ergonomic & Lightweight Handling
Compared to traditional heavy cement-fiber or aggregate boards, our composite backer boards are exceptionally lightweight. This minimizes physical strain during transport, warehousing, and overhead ceiling or wall installations.
5. Comprehensive Thickness Matrix
We provide a diverse structural thickness matrix to match precise engineering load-bearing and framing requirements:
4mm / 6mm: Floor tile underlayment over wood/concrete, thin renovation overlays, and countertop bases.
10mm / 12.5mm: Standard wall tile substrate for commercial showers, bathroom walls, and hospitality washrooms.
Custom Thickness (up to 50mm): Heavy-duty commercial applications or specialized architectural details available upon request.
Typical Applications
Residential Construction
Luxury bathroom walls, custom walk-in shower enclosures, kitchen backsplashes, and laundry room floors.
Commercial Projects
Hotels, multi-family apartment complexes, commercial washrooms, and high-traffic public facilities.
Extreme Wet Environments
Swimming pool surrounds, commercial spa rooms, and steam showers requiring continuous, unyielding moisture defense.

Technical Specifications
|
Property |
Specification Detail |
|
Core Material |
High-density Extruded Polystyrene (XPS) / Composite Waterproof Core |
|
Surface Treatment |
Polymer-modified mortar face reinforced with alkali-resistant fiberglass mesh |
|
Standard Thickness Options |
4mm, 6mm, 10mm, 12.5mm (Custom thicknesses available up to 50mm) |
|
Standard Sizes |
600mm x 1200mm, 900mm x 2400mm (Fully customizable per CAD drawings) |
|
Water Absorption Rate |
Less than 0.1% (Tested per ASTM C272 / ISO standards) |
|
Compressive Strength |
Greater than or equal to 300 kPa (Prevents indentation under heavy commercial point loads) |
|
Tile Compatibility |
Ceramic, porcelain, natural stone, mosaic, and large-format thin panels |
|
Installation System |
Compatible with polymer-modified thin-set mortar, tile adhesives, and mechanical fasteners |
Quality Control & Factory Inspection
To meet rigorous international building and import standards, every production batch undergoes strict QA/QC protocols prior to container loading:

Raw Material Verification
Density, structural integrity, and moisture-content testing of incoming XPS cores and fiberglass mesh.
Laser Calibration Check
Automated dimensional verification to ensure exact length, width, thickness, and strict squareness tolerance.


Physical Property Testing
Routine lab testing for water absorption, bond shear strength, and compressive resistance.
Export Packaging Inspection
Heavy-duty corrugated palletizing secured with corner protectors and moisture-proof wrapping to prevent transit and warehouse damage.

FAQ
As one of the leading custom size waterproof backer board manufacturers and suppliers in China, we warmly welcome you to buy advanced custom size waterproof backer board made in China here from our factory. All customized products are with high quality and competitive price. Also, pricelist is available.
