Hello, paint the wooden ceiling with 2 hands of marine varnish, but mold forms on the pine beams and on the boards, I do not know if there is any product to paint that is anti-mold and conserves the color of the wood or what is the color solution, I think it is moisture condensation, above the wood there is ruberoid, glass wool and veneer. I thank you if you recommend products for painting, or if I have to give you more hands of marine varnish, or what solution you propose. The rooms have little ventilation and my house is quite humid, it is an old remodeled house. Thank you.