Vapour Barrier in residential details is missing? Also: Spray Foam
Hi. Wondering why Vapour Barrier is often omitted in your detail library for cold climates, with batt/blown insulation usually drawn? See the attached example detail.
Also: what are your feelings for rigid insulation location (in the attached detail) if some roof rafters are replaced by hollow steel frame? Is “under” still better?
GBA Detail Library
A collection of one thousand construction details organized by climate and house part