Inside a log cabin. Hmm I havent done anything like that. The only thing that springs to mind is something like Dulux masonry paint which I have used on a few interior of sheds and inside a couple of beach huts.. looked ok. But they was'nt erm posh jobs lol. Have you tried looking in dulux trade on woodcare section or sadolin site. but they are pricey.
Good luck.
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