Nailbase roof retrofit
I’m a roofer in Western Pa. I am looking at a project with a cathedral ceiling throughout. It was built in the 70s and had little to no insulation in the roof/ceiling. A local SIP manufacturer will make me 5 1/2” nailbase panels to insulate the entire roof. I have a layering question. I need to weather in the roof as we strip it. 1/2 the roof( 20 sq) is wood shakes on a 20 pitch, so it will be slow going. As best as I can tell, the roof deck is 1 1/2” t&g timber decking. I would like to: put down a layer of Titanium paper to weather in, then the nailbase, then more titanium and ice and water, then aluminum standing seam. Any obvious issues with layering in this order?
Thanks in advance for any advice.
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