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I am building my house in Tucson and am not sure how to treat the porch roof! The main roof is insulated, then decked with OSB, and then covered in self adhering underlayment with corrugated fastened on top.
However, the porch is only roofed with pine board purlins spaced out (skip-sheathing) AND will be visible from below, so the boards and metal want to be visible!
My question is what to do to the purlins. Should I finish then with anything before laying metal? OR should I try to cut strips of tar paper or other underlayment to protect them from the metal?? I'm worried about them degrading over time... Is there a best practice for this scenario?
Thanks in advance!!
6/15/2024
If these are just plain pine boards and not treated lumber, the normal practice time would be to install right over them. You could paint them if you want to.
Isaiah Industries, Inc.
6/15/2024
thanks Todd. One other caveat is that I am using some clear polycarbonate panels in a few sections of porch roof for increased light. Would that advice still apply for unfinished pine under clear panels getting cooked by the desert sun??
6/15/2024
Painting them would offer some protection. Otherwise, unfinished would not be unusual.
Isaiah Industries, Inc.
6/16/2024