Closed-cell spray foam for gable vent cathedral ceiling
Hello everyone. I’m removed ceiling joists and replacing with rafters to create a cathedral ceiling with proper supports.
The porblem I’m having is deciding if I should use closed-cell foam on entire roof decking underneath or batts of fiberglass insulation (hell of a lot cheaper).
Heres the deal though. Based on article on here it says use closed-cell for unvented but the attic space (if you call it that), used to have knee walls and each side of house has gable vents.
The roof also has vents when roofer installed.
Woukd i just have spray foam guy spray over all the vents?
Should I use batts of fiberglass insulation and keep the cable vents open? Keep in mind, there are no soffit vents in this house.
It was built around 1945.
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