Foil-faced polystyrene and WRB
I believe it’s suggested that the WRB be placed as close to window plane as possible. With the shrinkage problem associated with rigid foam , a house wrap may be a better choice. So…if you use foil faced polystyrene then cover it with a house wrap…..then have a rain screen space…..doesn’t the wrap negate any benefit from the foil facing.
GBA Detail Library
A collection of one thousand construction details organized by climate and house part