How to interpret the product data sheet of wood-plastic wallboard?

This tells you the wood-to-plastic ratio – usually around 60% wood fiber to 40% plastic. Higher wood content gives that authentic wood feel but watch the plastic percentage too since it impacts moisture resistance. Some might add UV blockers or colorants here.

Tip: Look for boards made with recycled materials - it's a real plus for sustainability and often means the manufacturer has tighter quality controls.

You'll see terms like extrusion or co-extrusion. Extrusion means the whole board is one consistent material throughout. Co-extrusion adds a protective outer layer - great for extra UV or scratch resistance where it matters most.

This measures how much weight the board can handle before it bends or snaps. Measured in MPa (megapascals), look for values above 25 MPa for most applications. Higher is better if you're spanning wider areas or in high-traffic zones.

Indicates stiffness – how much the board will flex under pressure before bouncing back. Higher MOE means less visible sagging over time. For exterior cladding, you'll want something robust above 3,500 MPa.

Ever worried about hail damage or accidental bumps? This spec measures toughness against sudden impacts. ASTM D256 standards are common - higher joules mean better protection.

A critical spec measured by percent weight gain after 24-hour water immersion. Look for values under 2% – any higher and you risk swelling and warping in damp conditions. ASTM D570 is the gold standard test.

Shows how much the material expands and contracts with moisture/temperature changes. Lower percentages are better. Under 0.5% linear change means less gapping or buckling after installation.

Prevents fading and degradation. Quality manufacturers test using QUV or xenon-arc weathering chambers. Look for "colorfast" guarantees with Delta E values under 3 after 3,000 hours – that means virtually undetectable fading.

Measured in mm/m°C – shows how much the board expands with heat. Values under 0.05 mm/m°C are excellent and prevent buckling on hot days. This matters hugely for outdoor installations!

Class A (<25 flame spread), B (26-75), or C (76-200). Class A is critical for multi-family or commercial projects, while Class B might suffice for residential exteriors.

Often unnoticed but critically important. Even non-combustible materials can produce dangerous smoke. Look for values under 450, but the lower the better.

Quality manufacturers disclose the percentage of post-industrial or post-consumer recycled materials used. Over 80% recycled content isn't uncommon.

Look for LEED contribution notes, GREENGUARD Gold for indoor air quality, or ISO 14001 environmental management. These aren't just feel-good stamps – they mean third-party verification.

Specific nail/ screw types, spacing, and distances from edges matter more than you think. Ignore these and risk unsightly popping or worse.

Essential expansion space specs – usually 3-8mm depending on temperature ranges. This section often saves you from costly call-backs.

What surface can it attach to? Battens spacing and moisture barrier specs if applicable. Don't assume it's the same for every WPC product!