Flash & batt and rim joist insulation
I read an article – I believe on GBA.com that talked about the risks of flash and batt due to thermal break issues caused by framing. Basically if code calls for 2″ of closed cell foam before I lay batt insulation, there still won’t be enough insulation where the closed cell insulation, 2×6, and batt insulation all meet – creating risk for condensation in the wall structure.
I can’t find that article any longer and see plenty of articles on GBA.com suggesting flash and batt is ok. So is it ok – or should I have concerns with doug this? I am doing with blown in cellulose or fiberglass (still researching which) in the walls, but my insulator reca flash and bad batt for rim joists – if the point raised above is valid – should I just use blown cellulose or fiberglass instead of flash and batt?
GBA Detail Library
A collection of one thousand construction details organized by climate and house part