It is "real" old wood, in this case an old solid hewn building that was dismantled and its timbers used to build this home. It does not have any finish applied - it is a time aged and worn product, as much as some timber merchants may tell you they can replicate this look with new timbers it is virtually impossible to obtain the same detail and depth as "real" old wood.

What do you use to clean these walls? I am currently working on an old interior log wall and am planning to leave it natural, no stain, no poly but it is so rough hewn that I'm not sure how I'll keep it clean. (not something a swiffer is just going to glide over). Also not sure on how to go about doing the initial cleaning of the 100 years of ick that are on the walls... a local reclaimed wood artisan/craftperson recommended a vinegar bath then use a nylon brush and rinse with water. The attached picture shows a section of two of the logs post-vinegar bath.

also, thoughts on chinking & caulking?

Thank you!