Hi everyone, I have a reclaimed pine belfast sink unit that isn't fitted yet. I don't know whether it has already been treated with anything or not. My question is what do I use to waterproof it, especially the draining area? Also it will be situated under a window and be exposed to the sunlight, does this make any difference to what is used? Looking at some of the posts, tung oil seems to be the best, but is it the best in this situation? Also it has a lot of intricate carving, is it best to use an artists paint brush for doing this? I hope someone out there can help. Thanks Claire