Hi, there.
I’m looking for someone to let me know if this particular venting detail for the roof of a build will work. For starters, I am located in Northern Ontario. The roof is a 4/12 shed roof with a 24 inch raised heel. I’d like to use dense pack cellulose to insulate. The roof detail is as follows.
-Trusses ordered with no over hang.
– Sheeted with 1/2 inch plywood.
– Continuous Membrane from Siga or Pro Clima. (Haven’t decided)
-Over hang screwed through the sheeting and strapping that covers the span of the roof and allows ventilation.
-Standing Seam metal roof.

My question is if the ventilation under the metal roof is enough to ventilate the cellulose insulation without using baffles. Take into consideration that the membrane will be vapor permeable.

Basically, will this work?
Thanks.