How to Treat Shiplap Siding Over Rainscreen
It’s common knowledge among smart builders that back priming painted wood siding will help it hold the paint longer, minimize cupping of the boards, and reduce the chance of mold ant rot damaging the wood…but does the same hold true if you are using a translucent or semi-transparent stain?
I’m installing 1×8 pine shiplap siding over a rainscreen of 1×4 furring strips over 1-1/2-in. Rockwool. I plan to use a semi-transparent water-based deck stain on the siding, and it will be fairly well protected from rain because the wall is under a 6-ft. deep porch roof.
Is it worth the effort to seal or stain the back of the boards?
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