Breathable Exterior Insulation | DuPont

Available in 4-by-40-foot rolls, this building wrap from Tyvek offers builders another option to meet higher R-values. ThermaWrap R5.0 acts as a breathable air and water barrier while providing continuous exterior insulation. Designed to be installed like housewrap with cap staples or cap nails, the rolls feature an uninsulated flap along the bottom edge that overlaps the course below to prevent moisture penetration. ThermaWrap R5.0 is backed by a 10-year limited warranty.