Standard Waterproof Backer Board

Product Overview & Applications

 

Our waterproof tile backer board is a rigid, ultra-lightweight structural substrate engineered specifically for ceramic, porcelain, natural stone, and mosaic installations in high-moisture areas.


Unlike traditional cement boards that absorb moisture and require secondary waterproof membranes, our panels feature a 100% closed-cell extruded polystyrene (XPS) core. Both surfaces are reinforced with alkali-resistant fiberglass mesh and coated with a modified polymer cement mortar. This advanced engineered structure prevents water absorption while delivering exceptional dimensional stability for bathrooms, walk-in showers, commercial wet rooms, and underfloor heating systems.


Target Applications & Industry Keywords:

  • Residential Solutions: Tile backer board for wet rooms, bathrooms, walk-in showers, kitchen splashbacks, laundry rooms, and balconies.
  • Commercial & Industrial Projects: Hotels, luxury spas, steam rooms, swimming pool surrounds, hospitals, and modular/prefabricated pods.
  • Specialized Systems: Optimized XPS building boards and heavy-duty backer boards for underfloor heating systems.

 

 
 
Product Structure & Core Composition

 

Standard Waterproof Wall Backer Board

Closed-Cell XPS Core

The structural backbone. Every microscopic cell is fully sealed, blocking water penetration and preventing swelling, softening, or degrading in humid environments.

Standard Waterproof Bathroom Backer Board

Fiberglass Mesh Reinforcement

High-tensile, alkali-resistant mesh embedded on both sides to distribute surface loads evenly, enhance impact resistance, and prevent micro-cracking.

Standard Lightweight Waterproof Backer Board

Polymer Cement Coating

A specially modified cement mortar surface that provides a rough, optimal texture for mechanical interlocking with standard tile adhesives, bypassing the need for extra surface primers.

 

Technical Specifications
 

Property

Specification Value

Testing Standard / Notes

Core Material

Extruded Polystyrene (XPS) Foam

High-Density Rigid Foam

Surface Finish

Polymer Cement Mortar

Ready for direct tiling

Reinforcement

Alkali-Resistant Fiberglass Mesh

Both sides embedded

Standard Thicknesses

4, 6, 10, 12, 20, 30, 50 mm

Custom sizes available

Standard Width

600 mm

Precision CNC cut

Standard Lengths

1200 / 2400 mm

Custom lengths upon request

Water Absorption

<= 0.1% by volume

Closed-cell structure property

Compressive Strength

>= 300 kPa

At 10% deformation

Thermal Conductivity

0.033 W/m·K

Excellent thermal barrier

Operating Temperature

-50°C to +75°C

Weather & freeze-thaw resistant

 

Typical Floor System Layering

 

Subfloor (Concrete/Wood)

1

>>

Fixing Adhesive/Screws

2

>>

XPS Tile Backer Board 

3

>>

Heating Wire (Optional)

4

>>

Tile Adhesive (C2)

5

>>

Tile

6

Key Features & Benefits for Contractors & Wholesalers
 
Standard High Density Waterproof Backer Board

100% Waterproof Integrity: Waterproofing is inherent to the XPS core, not just a fragile surface film. On-site cutting or piercing does not compromise moisture resistance.


Labor & Shipping Cost Savings: Weighs only 3--5 kg/m2, drastically cutting international freight costs and reducing installer fatigue on large job sites.


Superior Dimensional Stability: Resists warping and twisting under fluctuating humidity and temperature changes, safeguarding against tile cracking and grout separation.


Built-in Thermal Insulation: Features high thermal resistance (0.033 W/m·K), preventing downward heat loss when installed over underfloor heating systems and boosting energy efficiency.


Fast & Clean Fabrication: Easily scored and snapped with a standard utility knife to fit around pipes, drains, and electrical fixtures without hazardous, heavy cement dust.

 

Quality Control, Standards & Compliance

 
 
01
 

Global Certifications

Manufactured under strict ISO9001 quality systems, meeting CE compliance standards. Third-party testing reports (TÜV / SGS) are readily available.

 
02
 

Strict Tolerance Control

Density and thickness tolerances are maintained within +- 2% to ensure consistent load-bearing capacity and thermal insulation across every batch.

 
03
 

Batch Traceability

Every production run carries an individual tracking code for full quality transparency prior to dispatch.

Standard Cement Coated Waterproof Backer Board

 

OEM, Customization & B2B Trade Terms

We empower global distributors, brands, and contractors with comprehensive contract manufacturing solutions:

Customization Services

Tailored dimensions, custom thicknesses, and private-label logo printing directly on the board or protective film.

Export Packaging

Fumigation-free wooden pallets, corner guards, heavy-duty shrink wrap, and custom carton labeling.

Minimum Order Quantity (MOQ)

1 x 20'GP container (mixed sizes and thicknesses supported).

Production Lead Time

15–25 days upon receipt of the official deposit.

 

 

FAQ

 

Q: Is the board completely waterproof throughout its body?

A: Yes. The waterproof performance stems from its closed-cell XPS core. Even if the board is cut, trimmed, or drilled during installation, its water-repellent properties remain entirely intact.

Q: Do I need to apply a primer before installing tiles?

A: No. The polymer cement-coated surface is engineered to provide immediate, strong mechanical interlocking with standard C2-grade tile adhesives.

Q: Does the system require additional waterproofing tape?

A: While the board itself does not absorb water, standard installation guidelines require sealing all joints, screw penetrations, and wall-to-floor corners with waterproof sealing tape and joint sealant to ensure a complete, airtight wet-room system.

Q: Can this board be used for heavy-duty floor tiling?

A: Yes. With a compressive strength of >= 300 kPa, it provides a rigid, high-load-bearing foundation capable of supporting heavy ceramic, porcelain, and stone floor tiles when correctly fixed to a solid subfloor.

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