for anyone using formica (any brand plastic laminate) over plywood, you will need a balancing sheet on the other side to maintain material stability.
(I know: "i gotta frien' who di'n't an' it's been fine ...)
I don't think thermal as much as humidity. then the movement works on the contact cement holding the formica, and then that delaminates causing loose spots.Are you suggesting that thermal expansion will cause the walls to curl?
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