I'm having a little problem trying to figure out if I should stain my window sills before install or after? Here's the issue... The windows all have a plastic wood return so that the new wood will slide into the returns. If I install them first it gives me the chance to nail and fill the holes first, but I'm afraid that if I try and stain the wood afterwards it will stain the white plastic returns... What to do?
If I stain and apply some clear first and then install the wood can I just stain the nail holes or will the stain sink into the varathane? My Dad says stain and clear first...