Anyone here ever use roughsawn lumber for siding? I'm going to be using some white oak milled from a tree on our property, and I am not sure what sort of stain or varnish I should use. I used some linseed oil on some exposed 2x6's (white pine) two years ago, and they took on a rather unattractive 'gummy' black appearance. Seems like the linseed oil oxidised or attracted filth or something. Anyway, I just wanted to get a few opinions on this subject, thanks!