I live in S.Carolina and want to put white board from lowes to use a window frames on my white pine log home.
CAn you recommend a clear finish that will last more than a few years without the wood darkening much and also protect against mildew.
No clear finish will last on the exterior. You need some sort of stain that will block the UV as much as possible. The darker the color the better. Any sort of finish will need some maintenance every 2-4 years, depending on exposure.
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