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High Compressive Strength Waterproof XPS Tile Backer Board

Our waterproof tile backer board is ideal for wet area installations. With excellent waterproofing and mold resistance, it prevents moisture damage in bathrooms, showers and kitchens. High compressive strength ensures a stable, flat base for tiles. Lightweight and easy to install, it saves labor time. Customizable sizes are available for both residential and commercial projects.

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Zhongjia

Product Description

Product Description

Our waterproof tile backer board is a high-performance, rigid substrate designed specifically for wet area tile installations. Made from premium XPS/cement core with a reinforced, water-resistant surface, it delivers exceptional waterproof performance, preventing moisture penetration and mold growth in bathrooms, showers, kitchens, and basements.

With a rigid, dimensionally stable structure, our backer board offers excellent compressive strength and impact resistance, ensuring a flat, durable base for ceramic, porcelain, and natural stone tiles. It eliminates the risk of warping, shrinking, or cracking over time, providing long-lasting support for your tile work.

Lightweight and easy to cut with standard tools, the board features a textured surface for strong tile adhesion, simpliying installation and reducing labor time. Its low water absorption rate ensures consistent performance even in high-hmidity environments, while the thermal insulation properties help improve energy efficiency in your space.

xps tile backer board

Core Advantages of XPS Tile Backer Board

Superior Waterproof & Moisture Resistance (Low Water Absorption)

Our XPS tile backer board features a closed-cell foam structure with extremely low water absorption (≤1%), creating an impenetrable barrier against moisture. Unlike traditional cement boards that can swell or degrade over time, it prevents water penetration in high-humidity environments such as bathrooms, showers, kitchens, and basements. This eliminates the risk of mold, mildew, and structural damage, ensuring long-term protection for walls and floors.

High Compressive Strength & Dimensional Stability

With a rigid, high-density XPS core, the board offers exceptional compressive strength (150–400 kPa, customizable). It maintains a flat, stable base even under heavy tile loads and foot traffic, preventing warping, shrinking, or cracking over decades of use. Its consistent dimensional stability ensures tiles remain firmly bonded, reducing the risk of grout cracks or tile failure.

Lightweight Design & Fast, Simple Installation

Compared to cement-based backer boards, our XPS board is significantly lighter, making handling and installation easier and safer for workers. It can be easily cut to size with standard tools (utility knives or saws), allowing for quick customization to fit any wall or floor layout. The textured surface provides excellent tile adhesion, eliminating the need for additional primers and speeding up the tiling process to save labor time and costs.

Excellent Thermal Insulation Performance

The closed-cell structure of XPS delivers outstanding thermal conductivity (≤0.027–0.030 W/(m·K)), helping to reduce heat transfer through walls and floors. This improves the energy efficiency of buildings, reducing heating and cooling costs while creating a more comfortable indoor environment. It is ideal for both interior and exterior applications where thermal performance is required.

Mold, Mildew & Rot Resistant, Eco-Friendly

Made from non-organic, inert XPS material, the board is resistant to mold, mildew, and rot growth, even in damp conditions. It does not provide a food source for bacteria or fungi, maintaining a healthy indoor air quality. Additionally, it is eco-friendly, containing no harmful chemicals or formaldehyde, and is fully recyclable at the end of its service life.

Versatile Application & Customizable Sizes

Available in a wide range of thicknesses (20–150mm) and customizable dimensions, our XPS tile backer board adapts to various project needs, including residential bathrooms, commercial showers, kitchen floors, and exterior wall tile bases. It is compatible with all types of tiles (ceramic, porcelain, natural stone) and can be used on both walls and floors, offering a flexible solution for any wet area installation.

Technical Specifications

Key Attributes
Material	Extruded Polystyrene (XPS)	Type	Tile Backer Board / Insulation Board
Product Name	XPS Tile Backer Board	Insulation R-value	R-3 to R-10 (based on thickness)
Product Length	1200–2400mm (customizable)	Product Width	600–1200mm (customizable)
Thickness	20–150mm (customizable)	Density	28–45 kg/m³ (customizable)
Shape	Square / Panel	Eco Friendly	Yes
Design Style	Modern	Thermal Conductivity	≤0.027–0.030 W/(m·K)
Color	Blue / Customizable	OEM	Accept OEM Service
Brand Name	Customizable	Place of Origin	Guangdong, China
Function	Waterproof / Thermal Insulation / Soundproof	After-sale Service	Online Technical Support
Packing	PE Bag / Custom Packaging	Warranty	1 Year

Parameter	Specification
Facing Options	Unfaced, plastic film, or custom coating
Standard Dimensions	2400x1200mm; thickness 20–150mm (customizable)
Compressive Strength	150–400 kPa (customizable by density)
Thermal Conductivity (λ)	@10°C: approx. 0.027–0.030 W/(m·K)
Operating Temperature Range	-50°C ~ +75°C
Fire Rating	Lv. B1 (flame retardant)
Water Absorption	≤1.0% (by volume, 24h)
Moisture Resistance	Excellent, closed-cell structure
Dimensional Stability	≤1.0% change under standard conditions
Application	Bathroom, shower, kitchen, basement tile base

Industry Applications

The XPS Tile Backer Board is a high-performance waterproof and thermal insulation substrate, widely used in wet and humid building environments, with core applications including:

Bathroom & Shower Wall/Base Installation

Installed as a tile backer board in bathroom walls, shower enclosures, and tub surrounds, it forms a waterproof barrier to prevent moisture penetration, mold growth, and tile failure in high-humidity areas.

Kitchen & Laundry Room Floors & Backsplashes

Used under ceramic or porcelain tiles in kitchens and laundry rooms, it resists water spills and splashes, while providing a rigid, stable base to keep tiles level and durable over time.

Basement & Foundation Wall Waterproofing

Applied to basement walls and floors, it blocks moisture seepage from the ground, creating a dry, mold-resistant surface suitable for tiling in damp below-grade spaces.

Exterior Wall Tile & Facade Base

Suitable for exterior wall tile installations, it offers both waterproofing and thermal insulation, protecting building envelopes from rain and temperature fluctuations.

Commercial Wet Area Projects

Ideal for hotels, gyms, swimming pool changing rooms, and public restrooms, where heavy foot traffic and constant moisture demand a reliable, long-lasting tile backer solution.

Customization Service for XPS Tile Backer Board

We provide one-stop customization service for XPS Tile Backer Board tailored to building and project characteristics:

Size Customization: Custom length, width and thickness according to construction drawings and on-site requirements.

Performance Customization: Adjust density and compressive strength to meet special waterproof, load-bearing or thermal insulation needs.

Surface & Facing Customization: Optional textured or coated surfaces for enhanced tile adhesion, moisture resistance and mechanical performance.

OEM Service: Support brand printing, packaging customization and bulk order parameter optimization for building material distributors and project contractors.

After-sales Support for B2B Clients

Online Technical Support: Provide installation guidance, product specification consulting and on-site problem solving via video or chat.

Order & Logistics Tracking: Full order status updates and professional logistics solutions to ensure on-time delivery.

Quality & Warranty Support: 1-year product warranty and batch quality inspection reports for every shipment.

Project Cooperation Service: Customized solution consultation and sample testing support for large-scale commercial projects.

FAQ

Q1: Why is this XPS tile backer board ideal for wet areas?

A: It features a closed-cell structure with low water absorption (≤1%), forming a reliable waterproof barrier. This prevents moisture penetration, mold growth and tile failure in bathrooms, showers and kitchens.

Q2: What customizable specifications are available?

A: Standard dimensions are 2400×1200mm with thickness from 20–150mm, all customizable. Density ranges from 28–45 kg/m³, and custom facing/coating options are available to enhance tile adhesion and water resistance.

Q3: What fire safety rating does it comply with?

A: It meets Lv. B1 flame retardant standard, with low flammability and no open flame dripping, suitable for both residential and commercial building projects.

Q4: What are the typical applications of this XPS tile backer board?

A: It is widely used for bathroom/shower wall and floor installations, kitchen backsplashes, basement tile bases, and exterior wall tile substrates in both residential and commercial wet area projects.

Q5: How to install the XPS tile backer board?

A: It can be easily cut with standard tools and fixed to walls/floors using appropriate fasteners. The textured surface provides strong adhesion for tiles, and no special primer is required under normal conditions.