Thermally-Modified Timber (TMT) is the natural wood subjected to heat-based thermal treatment. As a result, the properties of the wood are altered, giving rise to greater durability and dimensional stability, making it highly suitable for outdoor uses.

This is a 100% ecological (no chemical products are added) and eco-friendly technique that has been in use for thousands of years, and it has long been known that burning the surface of the wood increases its lifespan to up to 80 years.