Contributing editor Rick Arnold explains why this extra investment in labor and materials has a significant long-term payoff and tells how to detail the installation. A sidebar compares the three main types of foam insulation: expanded polystyrene, extruded polystyrene, and polyisocyanurate.
This article is only available to GBA Prime Members
Sign up for a free trial and get instant access to this article as well as GBA’s complete library of premium articles and construction details.
Already a member? Log in