Thermo Ash Prime KD grooved decking board 21 × 130 mm tongue & groove system board

Thermo Ash Prime KD Grooved – Decking Board 21 × 130 mm with Tongue & Groove

With the Thermo Ash Prime KD Grooved Decking Board, you can design your terrace with an elegant look while benefiting from high durability. This tongue-and-groove system board impresses with its precise workmanship, which allows for almost seamless installation – for a harmonious, continuous appearance that looks like a single piece.

The high-quality Thermo Ash wood is refined using a special thermal process. This gives it not only its deep brown color, but also particularly high dimensional stability and durability. Thermo Ash is resistant to weathering, fungal decay, and pests – ideal for outdoor use.

With a bulk density of approx. 550 kg/m³ and durability class 1 (according to DIN EN 350-2), the Thermo Ash decking board is among the most long-lasting woods available. It offers an alternative to tropical hardwoods without compromising on quality or aesthetics.

Thanks to the grooved profile, you also benefit from a slip-resistant surface that offers a secure grip even when wet. Thermal treatment significantly reduces swelling and shrinking of the wood – for a permanently dimensionally stable terrace surface. For optimal results, pre-drilling the fastening points is recommended to prevent stress cracks and enable stable installation.

Advantages at a glance:

• Thermo Ash Prime KD Grooved – exclusive thermally treated decking board

• Tongue-and-groove system board – simple, precise, and low-gap installation

• High-quality thermal treatment – for high dimensional stability and durability

• Durability class 1 – particularly resistant to weathering & pests

• Alternative to tropical hardwoods

• Elegant, deep brown color with natural wood grain

• Slip-resistant, grooved profile – safe and stylish at the same time

• Recommended gap width: approx. 4 mm for optimal ventilation and freedom of movement

• Easy processing thanks to dimensionally accurate quality

The Thermo Ash Prime KD Grooved Decking Board 21x130mm combines design and longevity – the choice for anyone looking to create a high-quality, low-maintenance, and dimensionally stable terrace without using tropical wood.