What is Thermal Modification?
Thermal modified lumber has been treated using a heat and steam based process to improve its durability and dimensional stability. This treatment involves heating the wood to temperatures typically between 160 to 230 degrees Celsius, in an environment with reduced oxygen, to avoid combustion. The high heat alters the chemical structure of the wood, reducing its susceptibility to moisture and making it more resistant to rot, decay, and fungal attack. Our sustainably harvested hemlock offers an eco-friendly and cost effective option for exterior applications.