Affordable Beauty. Superior Performance.

Introducing Earthen Thermally Modified timber (TMT) the sustainable, high-performance range of exterior and interior timber profiles   

Crafted from premium New Zealand radiata, Earthen TMT is thermally modified using advanced moisture and heat management technology. Thermal treatment takes place at lower temperatures at around 180 C when compared to traditional open kiln type systems at 230 C.

The process under pressure leaves residual humidity in the wood during the process that works as a catalyst for thermal reaction and reduces the brittleness of the finished product. This process increases the timber's stability, durability, and preserves its decorative appearance, making it an affordable alternative to costly imported timbers.

For exterior applications, Earthen TMT Xterior is infused with environmentally friendly PROTIM Micro MCA to deliver Hazard class H3.2 equivalent performance without the use of harmful chromium or arsenic. Precision profiling ensures a consistent aesthetic appearance. Additionally, the product can be factory coated with Foreverbreathe Oil to eliminate coating on site before installation. Earthen TMT provides matching decorative appearance in all categories.




Maintenance Made Easy

To maintain Earthen TMT Xterior’ s decorative appearance, recoating is recommended every 2 to 3 years. Make recoating and maintenance easy with the Foreverbreathe One-Coat Finishing Kit. Our New Zealand-made kits come in 10 colours. With factory coating involved before installation only one coat is required after installation and for maintenance recoating.


Sustainable & Affordable

At Health Based Building, we are proud to be a New Zealand-owned and operated company dedicated to building better. We have been committed to sustainable building material supply for many years, and through our convenient online marketplace delivery is available throughout New Zealand.

All of our products have been carefully selected for their sustainable credentials, so you can feel confident that you are making environmentally responsible choices. This means you can count on us for affordable pricing and a reliable supply line that won't let you down.


Technical Support

We understand that access to technical information and products is essential for a smooth and successful project. That's why our online market please at provides you with the convenience of 24/7 access to our range of sustainable building materials and technical resources. Our friendly team of product specialists are also available to assist with your enquiries – CONTACT US.