Hello all, first post
I am in the process of building a new home and have run into a situation that I need some help from more experienced people with. The house has scissor trusses with cathedral ceiling and I'm stumped on proper technique for the insulation. this is an unvented attic
1. steel standing seam roof
3. 3" Closed cell Spray foam underside of roof deck with 2" CCSF on walls.
4. R-38 fibergalss
My problem stems from the truss construction that does not allow a surface area for attaching the fiberglass batts directly in contact with the CCSF. The options I have come up with would be to attach nailers along each truss to staple the batts to(time consuming) or would I be safe with attaching the batts to the cathedral ceiling side which would create about 3' air gap between the fiberglass and the CCSF.
Thanks for any input