Thermally modified ash Prime KD smooth decking board 21 × 130 mm system board tongue & groove

Thermo-Ash Prime KD smooth – Decking board 21 × 130 mm with tongue & groove

With the Thermo-Ash Prime KD smooth decking board, you give your patio a timelessly elegant appearance while benefiting from high quality and resilience. The tongue & groove system board impresses with its precise workmanship, which allows for virtually seamless installation – for a modern, uniform patio surface with exclusive lines.

The high-quality thermally treated ash wood is refined using a special thermal process. This gives the wood its characteristic deep brown tone and particularly high dimensional stability. Thermo-Ash is resistant to weathering, pests, and mold, making it ideally suited 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 resilient woods available. It offers an alternative to tropical hardwoods.

The smooth surface ensures a particularly sophisticated, modern appearance. At the same time, the thermal treatment significantly reduces the swelling and shrinking of the wood, keeping the boards dimensionally stable and true to form. For installation, we recommend pre-drilling the fastening points to avoid stress cracks and ensure a secure, long-lasting connection.

Advantages at a glance:

• Thermo-Ash Prime KD smooth – high-quality decking board made of thermally treated wood

• Tongue & groove system board – simple, precise installation with minimal gaps

• Thermally treated – for high dimensional stability, durability, and accuracy

• Durability class 1 – particularly resistant to weathering, fungi, and pests

• Alternative to tropical hardwoods

• Smooth surface – modern and easy to clean

• Sophisticated, deep brown tone thanks to thermal refinement

• Recommended gap width: approx. 4 mm for optimal ventilation

• Easy to work with thanks to dimensionally stable quality and robust structure

The Thermo-Ash Prime KD smooth decking board 21 × 130 mm combines design and longevity. It is the ideal choice for anyone looking for a high-quality, elegant, and low-maintenance patio solution without using tropical wood.