We want to refinish the intereior walls of a 12 yr. old log home (larch) which was finished with an oil based Sikkens Interior Clear. Can we apply a water based product over it or do we have to sand all the logs first? Is there a product we can apply which would eliminate all the sanding?
You could probably get away with just a very light sanding to remove any rough spots then apply a latex product over it. I would not recommend it for exterior, interior should be okay. Latex over oil, but never oil over latex.