ok, i put cypress beadboard on the ceilings under my porches on the new house. I need to finish it with a clear coat. my painter wants more than i want to pay, mostly because he wants to put a high grade exterior varnish on it which costs alot. i was just gonna spray it with poly, it isn't directly affected by sunlight, and it won't see any direct moisture except dew and any airborne moisture.
anyone have any idea whether ploy is good enough?