Saw this on a off-grid forum and thought I'd share..I've seen this on some of the home shows but haven't personally tried it yet...they say it preserves the wood, repels bugs (some of these buildings in Japan are over 1000 years old)...looks easy to do, just lightly torch the wood before siding the house. You can even treat it if desired. If I were building an offgrid cabin (another one) i would give this a hard look.....

https://www.archdaily.com/880330/car...ered-the-world