Hello, I am building a great room. I have fresh cut timbers, hemlock, cut in March 2014 and milled in June 2014. They are not kiln dried. They are sitting on saw horses 3 feet off the ground and covered with a tarp. They will be constructed in Sept and we want to treat them before they go up. How do I treat them? We like the natural look and don’t want them to yellow. I don’t want a color stain. We aren’t what to use to stop them from cracking and yellowing.