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The question is should a purlin or blocking be used behind the shingles or is the plywood sheathing enough to hold the shingles in place. Thanks in advance
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Chad
Kinda depends on the application. . . roofing, or sidewall???
Either way no extra support is needed
i behind
the sheathing, but roofing should be done over skip sheathing, sidewall is fine up against ply covered with 30# felt(tar paper).
-pm
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The question is should a purlin or blocking be used behind the shingles or is the plywood sheathing enough to hold the shingles in place. Thanks in advance