I am building my own house and we wanted a unique wood ceiling in the main living area. It is a single slope from 9' up to 13.5' on the high side, the room is 18.5' x 37'. I bought red oak #3 grade tounge and groove flooring. I gave it a quick sand with my palm sander with 220 sandpaper to take off the grade marks. The then put on a 1 heavy coat of boiled linseed oil and wiped off the excess after 15-30 minutes, and let it dry for 24-48 hours and put it on the ceiling.

We really like the color it turned out, a lot of variations and we like the overall sheen. A few boards look spotty but only when a hanging light glares at an angle, looks good looking at it straight. The longer it's up it has seemed to dull somewhat for lack of a better word but stands out more with the lights off. I trying to decide if I should put a oil based satin polyurethane or satin spar urethane over it. But I am way over my timeline already will 1 be enough? Or another product?