Re: timBor is the same thing
david weaver
However they brand their stuff, it's just a product that delivers boric acid in anticipation of bug or termite pressure.
I used some, IIRC, it was a powder (this was about 15 years ago), and like anything else, it needs to be on the wood before the bugs are in the wood.
If you're in an area where it's dry in the winter and the wood stays dry in the summer, an inch per year of thickness should be fine.
The challenge is staying on top of any issues.
Friend of mine was given a ten year old pile of white oak slabs that someone sawed, stickered and then expected to have as a gold mine. He got them for almost nothing, and gave me two. They were worth almost nothing - sections were usable, but most of the wood managed to rot (by getting wet and then drying again?) even though the wood was sawed green and solid and wasn't a snag or a log that was already down.
It taught me that it's probably not worth the trouble if you're not going to follow the wood by checking it periodically and then using it soon after it dries (so that it doesn't just become an obligation).
Slab value is a funny thing. The explosion of portable bandmills has made it so that craigslist here is full of slabs. Many are pinoak or something similar, and if what Bill says is true, I don't think most get much more than log price for the trouble. Lots of wannabe lumber jockeys sawing little logs on youtube claiming that they're getting $15 a board foot for slabs, but I have some trouble believing that.
If you can dry the wood and use it, though - that's a different story. Schedule yourself time to check it on a regular basis more often than less at first.
in-situ stationary mills were common where I grew up and the roofs showed abuse, but it was more often something that flew off the mill or that was thrown by the saw blade. Barn roof holes near us were usually firearm related unless the barn was really old.