I have a post and beam frame all closed in from the weather that has been sititng for two years, I am now finishing the beams and there is quite a bit of blue moss that has blead through.
Has anyone had good luck with a product to remove / kill this before I stain the beams.

I am told that a bleach will make that area diffrent form other areas when finished and TSP leaves a greasy film that really needs to be hosed off which I cannot do.

I am also looking for some ideas on what to use for a finish,looking to keep the natural look of the wood without adding a color, I tried linseed oil but turned very yellow quickly and water base does not give a very natural look unless somebody had a diffrent experience.