Heat-treated wood is the wood or limber that has been exposed to high temperatures.
There are usually two classifications for the “Heat Treated (HT)” in the market:
The first one is based on the recommendation of the International Standards for Phytosanitary Measures (ISPM) 15, the wood that is used to package materials, such as pallets, require a less intense temperature for treatment. Generally, the temperature is around 133°F (56°C), and the duration is about 30 minutes. In this case, HT wood can stop the spread of insects and disease through international trade.
The second one is thermal modification of the wood.