I have interior pine on my windows. I don't want to paint them, but use a stain and clear finish. It is clear glass and not low-e windows. All of the finishes I have tried have peeled off from the UV. Would an exterior finish work? I don't want them to "yellow". In Montana, we also have some ice on the interior windows when it gets to 20 & 30 below. (I do wipe them to keep the moisture problem down) Any suggestions on products to use that will hold up to moisture and UV and not "yellow"?