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
Unbeatable Moisture Defense: Thanks to its closed-cell structure, XPS actively resists water absorption—helping to prevent mold, mildew, and rot. Perfect for wet areas like bathrooms, showers, and kitchens.
Rock-Solid & Reliable: Delivers strong compressive strength, providing a firm foundation that holds up under heavy loads without cracking or compressing. Your tile floors stay level and crack-free for years.
Energy-Saving Insulation: Boosts your space’s energy efficiency by significantly reducing heat loss through walls and floors. Works especially well with underfloor heating for lasting warmth and lower bills.
Lightweight & User-Friendly: Much easier to carry, handle, and install compared to traditional cement boards. Cuts down on installation time and effort without sacrificing performance.
Easy to Cut & Shape: Trim it effortlessly with a utility knife or fine-tooth saw for clean, precise fits around pipes, corners, and fixtures—all without creating dusty or harmful particles.
Stays Stable Over Time: Won’t warp, swell, or break down with age. This means a consistent, durable substrate that helps avoid cracks in tiles and grout long after installation.
Smart Click-Together Design: Features a practical tongue-and-groove system for snug, seamless joints that minimize thermal bridging and create an even surface ready for tiling.
Underfloor Heating Ready: Ideal companion for both electric and water-based underfloor heating systems. Ensures excellent heat distribution and energy-efficient performance.
Product FAQ
1. What's the main job of this backer board?
Think of it as your wall's all-weather superhero cape! It’s designed to protect, insulate, and drain moisture in exterior walls. You install it right over the sheathing, and it tucks neatly behind your siding—whether that’s brick, stone, stucco, or other veneers.
2. Can I use it below ground (touching soil)?
Absolutely! It’s tough enough to handle below-grade adventures. Thanks to its high strength and awesome moisture resistance, it’s a great pick for insulating foundation walls—even when the soil gets a little clingy.
3. How does it handle water?
Great question! The board comes with built-in vertical channels that act like a tiny drainage highway. If water sneaks behind the siding, these channels guide it down and out fast, so your wall sheathing stays nice and dry.
4. What’s the R-value per inch?
It packs a cozy punch—typically R-5 to R-5.6 per inch (just plug in your product’s exact number here!). That means solid thermal resistance without eating up your wall’s space.
5. How do I cut and attach the boards?
Cutting is a breeze: score and snap with a utility knife, or use a fine-toothed saw. To fasten, grab some corrosion-resistant screws or nails with large washers, and follow both local codes and our handy guidelines. Easy peasy!
6. Do I still need housewrap or building paper?
Nope—that’s one of the cool perks! This board often does the job of a separate housewrap, acting as both weather-resistant barrier and drainage plane. (P.S. Always double-check your local codes, just to be sure.)
7. Is it resistant to bugs and pests?
The material itself isn’t a pest snack, but we still recommend following local best practices for termite and pest protection—like using mechanical barriers or approved treatments—to keep everything extra secure.
8. What are the standard panel sizes?
You’ll usually find them in handy 2' x 8' or 4' x 8' sheets (about 610mm x 2440mm). Thicknesses often range from 1/2" to 2" (12mm to 50mm), so you can pick what fits your project best.
9. Does it contain any harmful chemicals?
Not here! Our board is made with the planet in mind. It’s free of CFCs, HCFCs, and formaldehyde, so you can breathe easy—indoors and out.
10. Is this product up to code?
Yes indeed! It’s tested and certified to meet relevant international building codes for insulation and water-resistive barriers. As always, we recommend checking with your local building authority to get the final thumbs-up for your project
