Wood is good for extreme temperatures - it never feels excessively hot or cold and its thermal stability makes it ideal for lining rooms like saunas.
Wood is predictable in fire.
Predictability of performance and high thermal insulation properties make wood an excellent fire resistant material. Wood is durable - timber buildings still exist that were built a thousand years ago. In the UK, softwood timber frame houses still exist from the 18th century. Answers to some frequently asked questions about wood DIY Difficulty Indicator - some documents in this section contain instructions and a difficulty indicator. The following key explains what each indicator means.