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Different from traditional cement backer boards, calcium silicate boards and gypsum boards, this XPS composite ines waterproofing, thermal insulation, low weight, anti-mold and anti-deformation properties. It does not absorb water, will not expand, soften, rot or grow mold in a continuously humid environment. The matte white cementitious surface provides consistent and excellent bonding base for thin-set mortar, porcelain tiles, ceramic tiles, marble, quartz, and large-format slab tiles. It is widely supplied to building contractors, tilers, renovation companies, hotel developers and wholesale distributors worldwide for residential and commercial wet-area tiling projects.
Multiple standard thicknesses and sheet sizes are available in stock. Custom dimensions, cutting service, OEM packaging and printing are supported for bulk orders. We can mix shipment with XPS boards, glass wool, MLV sound barrier and other insulation materials for container orders.
| Key Attributes | |||
|---|---|---|---|
| Material | Closed-cell XPS foam + fiberglass mesh + polymer cement coating | Type | Wet Area Tile Substrate |
| Product Name | White Waterproof Tile Backer Board | Thermal Conductivity | 0.033 W/m·K |
| Product Length | 2440 mm | Product Width | 1220 mm |
| Thickness | 6-50mm (customizable) | Density of XPS Core | 35–45 kg/m³ |
| Shape | Flat Panel | Eco Friendly | Yes |
| Surface Color | White | Fire Class | B1 Flame Retardant |
| Water Absorption | ≤0.5% by volume | OEM | Accept OEM Service |
| Brand Name | ZhongJia | Place of Origin | Guangdong, China |
| Function | Waterproof / Moisture Proof / Thermal Insulation / Anti-mold | After-sale Service | Online Technical Support |
| Packing | PE Film / Carton | Warranty | 1 Year |
The white waterproof tile backer board is a high-performance wet-area tiling substrate for residential and commercial construction, with core applications including:
Shower & Wet Room Installation: Ideal base for tile fixing in walk-in showers, bathtub surrounds and wet rooms. It provides stable support, excellent moisture resistance and works with waterproof tape to form a complete waterproof system.
Bathroom Wall & Floor Tiling: Used on bathroom walls, floors and vanity backgrounds. It resists moisture and mold, effectively preventing tile hollowing, falling off and substrate deterioration in long-term humid environments.
Kitchen Splashback & Wet Zones: Serves as a reliable tiling substrate for kitchen splash zones and wet kitchen areas, coping with splashing water and daily humidity.
Underfloor Heating Tiling Base: Combined with underfloor heating systems. Its low thermal conductivity reduces heat loss, improves heating efficiency while offering a solid base for tiles.
Sauna, Spa & Steam Room Projects: Suitable for high-humidity scenarios such as saunas, steam rooms and spas. It maintains stable performance under continuous high temperature and humidity.
Commercial Restroom & Hotel Fit-out: Widely adopted in hotel bathrooms, public restrooms and apartment renovation projects, meeting strict moisture-proof requirements for commercial fit-outs.
We supply professional technical guidance for backer board installation systems, including waterproof joint treatment and tiling solutions. Test reports are available upon request. Our team offers fast online support for bulk orders, mixed container loading and delivery arrangement.
Q: Is this backer board completely waterproof?
A: It features closed-cell XPS core with ultra-low water absorption and will not swell when wet. It works as part of a full waterproof system. You still need to seal all joints and corners with waterproof tape.
Q: What tiles can I install on this white backer board?
A: It is compatible with ceramic, porcelain, natural stone, marble and large-format slab tiles. Standard cement-based thin-set mortar is suitable.
Q: Can it be used for steam rooms and saunas?
A: Yes, it is mold-resistant and stable in high-humidity environments. Please confirm the recommended thickness and waterproof construction plan before installation.
Q: How do I cut and fix the backer board?
A: You can cut it with a utility knife or saw. Fasten it onto solid framing with rust-proof screws. All gaps and penetrations must be sealed properly.
Q: Do you support custom sizes and OEM orders?
