hey Sweden. No doubts, that all wooden planks will have vton treated. I general(when building) made complete the hull first (before adding decks etc) when the hull was finished, I treated the hull with my own mix -mixture of white glue plus. This mixture was smirred all over the Hull, to seal all the tine holes in the planks-wood-and seal all imperfection. the problems arrive when the the mixture is dry to sand it off. When done well you now have a nice surface to paint. Later you can paint Gunports on all deck associations. General this does not give any problems, only be careful with the masking tape fit. Hey El Capi