Partially Vapor-Open Exterior Wall
My tiny house has some DPC foil under the roof that hangs 20cm down the wall. Below is some UV proof, vapor open foil.
I could cut the DPC foil back and put additional vapor open foil under it, but that would require twice the amount of adhesive and extra work.
I’m now wondering if it would be bad to have a vapor barrier at the top of the wall, considering it’s only about 5-8% of the total surface.
GBA Detail Library
A collection of one thousand construction details organized by climate and house part