Vapor permeance of EPS not dependent on thickness?

I came across this little blurb from Quick-Therm that essentially states the thickness of EPS does not affect its permeance. They actually say:”So, a slab of insulation subject to a… I came across this little blurb from Quick-Therm that essentially states the thickness of EPS does not affect its permeance. They actually say:”So, a slab of insulation subject to a…Read MoreGreenBuildingAdvisor