"Jamie, first welcome aboard and secondly in response to your question - technically that would not be a "hot roof" as it is ventilated
I do agree with you on the hardest parts, but not because of air leakage, but the thermal transfer in…"
"I think this is an excellent topic especially with the rush to own a spray foam rig and not understanding building science.
I like the "hot roof" type also, but I also like the suggestion of having a firred-up roof. With the decking that…"
"Just so I am clear - you are not advocating eliminating the soffit venting, unless you are replacing it with another type or going to a hot roof system, correct?
Hot roof's with foam - never had an issue with them spraying that area off
"We have had good success using rigid and one part foam to get those darn exterior wall top plates. Two part foam can be cost prohibitive. We use a fireblock foam with a dispensing gun that has a 3ft barrel. The long barrel gets out to those tight…"
The days of the good ole rafter baffle are over. What are your feelings on sealing the tops of exterior wall plates? Important to do with many choices. Two part foam ( hard to get to the plate ), use cellulose bags stuffed on top of the plate ( stops all venting from soffet)
Combustion Appliance Zone Testing (CAZ) Made Easy (March 24, 2016)
-Adapting to the new BPI standard
-RESNET testing requirements
-NFPA testing requirements
-Best practices for best results