OK. Here goes. I got an awesome deal on an old house, the thing though is it had to be moved and in order to move the house, the roof had to be removed down to the ceiling joists. I knew that I would not be able to put on my metal roofing until the loan for my land went through(about 3 months), so in the rush to avoid rain ruining my house I did this,
-framed up the roof as I wanted
-put tyvex on top of that
-put 2x4 purlins(pressure treated since it would be exposed for a while to the rain but now which I have found out is not good to attach galvanized roofing to.
so my questions are… What are my options as far as attaching the roof to the purlins? One of the guys I spoke to about a quote on the metal said to put roofing felt between the purlins and the roofing to avoid corrosion. I live in a hot climate(south louisiana). Should I worry too much about condensation behind the metal since we don’t really have much of a cold season? The tyvex has done a good job so far of keeping the rain out so I am thinking it would be fine. Would the roofing felt cut to 3.5" applied over the purlins work to keep the metal from corroding? In your experience, what would you do?