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measure twice s...
cupped cedar siding
measure twice s...

A number of pieces of the rough sawn 3/4 inch thick x 8 1/4 inch wide cedar siding on the front of the house are severely cupped in several locations. I doubt if the backsides of the pieces were primed, if the planks were properly nailed, and air space, if required, was provided between the sheathing and the siding. That being said, if it is possible to remove the siding without destroying it, (a) could saw grooves be ripped length wise in the backsides to relieve the cupping, (b) then re-prime all surfaces, (c) then provide any necessary air space, (d) and then re-install the siding using proper nails and nail spacing. The exterior face of the siding was probably coated using exterior heavy body stain and is in need of another coat of stain or paint.

dj1
Re: cupped cedar siding
dj1

Without knowing the percentage and the extent of the damaged boards, I'd say try one board and see if your plan works out.

Re: cupped cedar siding

The vertical cedar siding, having cupped over the years, obviously lets in all kinds of water behind the siding.

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