Introducing our premium Extruded Polystyrene (XPS) Backer Board, the modern, high-performance solution for tile underlayment. Engineered to replace traditional cement boards and heavier alternatives, our XPS board is designed for professional contractors and DIY enthusiasts who demand a lightweight, durable, and moisture-resistant foundation. Ideal for walls, floors, and countertops in bathrooms, kitchens, and wet areas, it ensures a stable, long-lasting base that prevents cracking and tile failure. Build with confidence and efficiency using the next generation of backer board technology.
Technical Data Sheet of TAICHUN Tile Backer Board
Performance
Uint
Standard
Required
Water Absorption
%
GB/T8810-2005
<0.8
Water Vapor Transmission Coefficient
ng/(m · s ·Pa)
QB/T2411-1998
≤0.35
Thermal Conductivity
W/mk
GB/T10295-2008
<0.04
Compressive Strength
Kpa
GB/T8813-2008
>400
Thermal Expansi on Coefficient
⁶K¹
ASTM D696
≤0.5
Combustion Grade
/
GB/T8624-2012
≥B2
ODP(0zone Depletion Potential)
/
/
0
GWP (Global Warming Potential)
/
/
0.29
Potassiu geraanganate consumption
mg/Kg
/
≤10
Heavy etal(Pb)
mg/Kg
/
≤1
Ethylbenzene
%
/
≤0.3
StyEene
%
/
≤0.5
category
Size(Length ✖️Width✖️Thickness mm)
(m²/piece)
(kg/piece)
Small
1200 x 600x4
0.72
2.09
1200 x 600x6
2.3
1200 x 600x10
2.38
1200 x 600x20
2.67
1200 x 600x30
2.89
Normal
2500x600x12
1.5
5.1
2500x600x20
5.6
2500x600x30
6
2500x600x40
6.5
2500x600x50
6.90
Large
2440x1220x12
2.98
10.12
2440x1220x20
11.01
2440x1220x30
11.91
2440x1220x40
12.8
2440x1220x50
13.7
Product Features
Excellent Moisture Resistance: The closed-cell structure of XPS prevents water absorption, protecting against mold, mildew, and rot, making it perfect for bathrooms, showers, and kitchens.
High Compressive Strength: Provides a robust and stable substrate that can withstand heavy loads without cracking or compressing, ensuring your tile floors remain crack-free.
Superior Thermal Insulation: Significantly improves the energy efficiency of your space by reducing heat loss through floors and walls, especially when used with underfloor heating systems.
Lightweight & Easy to Handle: Much lighter than cement-based backer boards, making transportation, handling, and installation faster, safer, and less labor-intensive.
Easy to Cut & Shape: Can be easily and cleanly cut with a utility knife or fine-tooth saw, allowing for precise custom fits around obstacles without creating harmful dust.
Stable & Dimensionality Consistent: Will not warp, swell, or degrade over time, providing a permanent, reliable foundation that prevents tile and grout failure.
Simple Installation System: Features a tongue-and-groove design for a tight, seamless fit that minimizes thermal bridging and ensures a level surface.
Compatible with Underfloor Heating: The ideal companion for electric and hydronic heating systems, providing excellent heat distribution and energy savings.
Product FAQ
1. What is the primary use of this extruded backer board? Its primary use is as a protective, insulating, and drainage layer in exterior wall assemblies, installed directly over the structural sheathing and behind siding or veneers like brick, stone, or stucco.
2. Can it be used below grade (in contact with soil)? Yes. Its high compressive strength and exceptional moisture resistance make it an excellent choice for below-grade applications, such as insulating foundation walls.
3. How does this product manage water? The board features an integrated network of vertical channels that create a drainage plane. This allows any incidental water that gets behind the siding to quickly drain down and out, keeping the wall sheathing dry.
4. What is the R-value per inch? The R-value is typically between R-5 to R-5.6 per inch (please insert your product's exact R-value here). This provides excellent thermal resistance in a slim profile.
5. How do I cut and fasten the boards? The boards can be easily scored and snapped with a utility knife or cut with a fine-toothed saw. They are fastened to the wall sheathing using corrosion-resistant screws or nails with large washers, following local building codes and the manufacturer's guidelines.
6. Is a housewrap or building paper still needed? No, one of the key advantages of this system is that it often replaces the need for a separate housewrap. The board itself acts as the weather-resistant barrier and drainage plane. Always check local building codes for specific requirements.
7. Is it resistant to insects and pests? While the material itself is not a food source for pests, it is always recommended to follow local building practices for termite and pest protection, which may include mechanical barriers or chemical treatments.
8. What are the dimensions of a standard panel? Standard panel sizes are typically 2' x 8' or 4' x 8' (approximately 610mm x 2440mm), with common thicknesses ranging from 1/2" to 2" (12mm to 50mm).
9. Does it contain any harmful chemicals? Our extruded backer board is formulated to be environmentally responsible. It is free from CFCs, HCFCs, and formaldehyde, contributing to better indoor and outdoor air quality.
10. Is this product compliant with building codes? Yes, our product is tested and certified to meet relevant international building code standards for water-resistive barriers and insulation. Always verify with your local building authority for specific project approvals.
