Isomere insulation and roof ventilation

(Hank Vanderbeek, MPA, CMI) #1

The roof is metal and the bldr put in isomere insulation against the substrate but did not ventilate - no ridge, soffit or gable vents. Said not needed bec of the "effect" of new type of insulation. Anyone have any experience with this type of insulation and ventilation?

(Randy A. Glenn) #2

Was that sprayed directly to the bottom of the metal panels ? Or to the bottom of the plywood decking ?

(Harvey Gordon, MRSA651) #3

My understanding is it's the only approved way to "not vent" an attic.

(Jeff Merritt) #4

I have started reading up on this, Most of the roofing company's are not to happy with it, I don't know about the steel roof system. this is going to get intresting.

(Hank Vanderbeek, MPA, CMI) #5

I can't image an unvented attic, reagardless of the type of insulation, especially new brands.

(Hank Vanderbeek, MPA, CMI) #6

Would love to know what u have found in your reaseach.