I actually stained the inside of mine and then put on 3 coats of polyurethane. I thaught this would be plenty water resistant and I wasn't worried about having it white because the T5 TEK reflectors aim all of the light down. Well the poly. is not water resistant enough because my solid oak door started to warp pretty bad. I have since painted the canopy white with some good outdoor acrylic latex paint. I just don't want anyone else to make the same mistake.