Radiata pine ThermoWood from New Zealand is produced from sustainably managed Radiata pine forests and enhanced through a high-temperature, chemical-free modification process. The wood is carefully heated to temperatures in excess of 200°C under controlled steam conditions. This alters the wood’s cell structure, reducing its equilibrium moisture content and increasing resistance to decay, swelling, and warping.

The treatment also transforms the timber’s appearance. Radiata pine ThermoWood develops a rich, warm brown tone that can range from honey to deep caramel, with a more uniform grain and is almost entirely defect free . Over time, it will naturally silver when exposed to sunlight unless protected with a suitable finish.

Sustainability is a core advantage,  Radiata pine grows rapidly in New Zealand’s certified plantation forests, ensuring a renewable and low-impact resource. The thermal modification process uses only heat and steam—with no chemical additives—resulting in an environmentally responsible product ideal for cladding, decking, and interior applications.