Custom Size Waterproof Bathroom Backer Board

Our waterproof bathroom backer board-widely sought after as an XPS tile backer board and waterproof shower panel-is engineered for tile installation in shower rooms, wet areas, commercial kitchens, and moisture-prone environments where standard cement boards cause excessive on-site waste and high labor costs.

As a direct extrusion and composite manufacturer, we produce panels tailored to your exact project specifications-including non-standard dimensions, precise thicknesses, and specialized edge profiles. This capability eliminates unnecessary cutting, accelerates installation, and streamlines inventory management for distributors, contractors, and modular bathroom builders. Manufactured in compliance with rigorous international building standards (including ASTM C578 for rigid cellular polystyrene and EN 13164 thermal insulation guidelines), our products undergo strict factory testing to ensure reliable field performance.

Engineered to Your Dimensions: We manufacture boards based on your CAD drawings or technical specs rather than forcing you into standard market sizes.

• Length & Width: Customized per project footprint to minimize offcuts.
• Thickness: 4 mm to 50 mm available.
• Edge Profiles: Square edge or shiplap edge for seamless interlock.
• Custom Machining: CNC-cut openings, drainage slopes, and pipe grooves.

XPS Closed-Cell Waterproof Core: The core is made of extruded polystyrene (XPS) rigid foam, offering a water absorption rate of < 1% by volume. Unlike gypsum boards that degrade or cement boards that allow moisture migration, the closed-cell structure prevents water penetration. Both sides are coated with polymer-modified cement reinforced with alkali-resistant fiberglass mesh, creating an ideal substrate for cement-based tile adhesives.

Lightweight for Efficient Handling: Weighing significantly less than traditional fiber-cement boards, these panels reduce physical strain on workers. A single installer can easily lift and position large panels, making upper-floor renovations and modular installations faster and safer.

Thermal Insulation Properties: Unlike cold cement substrates, the XPS core provides thermal insulation with a thermal conductivity of 0.029–0.034 W/(m·K). This helps prevent thermal bridging behind tiled walls and improves indoor comfort in residential and hospitality projects.

High Compressive Strength & Flatness: The board delivers a compressive strength >= 300 kPa, ensuring it supports heavy porcelain tiles, large-format slabs, and natural stone without deflecting or deforming under normal wall loads.

Easy Fabrication On-Site: Panels can be sized and notched using standard construction tools (utility knife, hand saw, or circular saw) without generating heavy, hazardous silica dust.

We provide flexible, factory-direct manufacturing support tailored to global distributors and project contractors:

Stable Production Capacity: Backed by advanced extrusion and composite lines, we maintain a stable production capacity of over 40 containers per month, ensuring on-time delivery for large-scale wholesale and rolling project orders.

Reliable Lead Time: Standard production and dispatch within 15–20 days per container to keep your supply chain running smoothly.

Flexible Minimum Order Quantity (MOQ): Customized policies designed to support trial orders, pilot projects, and full container load (FCL) wholesale distribution.

Branded Packaging: Custom outer cartons, printed plastic wrap, and pallet identification labels with your logo and barcodes (Private Label options fully supported).

Export Protection: Heavy-duty wooden pallets, corner edge protectors, and moisture-resistant wrapping for safe international shipping.

Sample Support: Pre-production laboratory and site trial samples available upon request to verify material compliance before bulk commitments.

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