Johns Manville AP™ Foil-Faced Polyiso Continuous Insulation board consists of a uniform closed-cell polyisocyanurate foam core bonded on each side to a foil facer. One side has a reflective foil facer and the other side has a white non-reflective foil facer to suit your building needs. Polyiso provides one of the highest R-values per inch of any rigid insulation (R-6.0 at 1 inch). Furthermore, when properly installed, AP Foil-Faced Polyiso Continuous Insulation functions as a water-resistive barrier, vapor barrier and air barrier, eliminating the need to install additional components.

AP Foil-Faced Polyiso Continuous Insulation is produced with an EPA-compliant hydrocarbon-based blowing agent that has zero Ozone Depletion Potential (ODP) and virtually no Global Warming Potential (GWP); it also meets both CFC- and HCFC-free specification requirements. Polyiso is one of North America’s most widely used insulation products and has been cited by the EPA for its responsible impact on the environment.

AP Foil-Faced Polyiso Continuous Insulation provides exceptional heat, moisture and air control to protect your building’s exterior wall assembly.

Advantages

• Thermal Insulation - inch for inch, polyiso has one of the highest energy efficiencies. R-values for AP Foil-Faced Polyiso Continuous Insulation, and physical properties. R means resistance to heat flow. The higher the R-value, the greater the insulating power. 
• Water-Resistive Barrier - when properly installed as part of a Johns Manville Wall System, AP Foil-Faced Polyiso Continuous Insulation meets the ICC-ES AC71 acceptance criteria for foam plastic sheathing used as a water-resistive barrier.
• Vapor Barrier - at a minimum thickness of one inch, AP Foil-Faced Polyiso Continuous Insulation has a vapor permeance of 0.05 perms and qualifies as a Class I vapor retarder.
• Air Barrier - when properly installed as part of a Johns Manville Wall System, AP Foil-Faced Polyiso Continuous Insulation meets the Air Barrier Association of America boardstock criteria for materials and assemblies.
• Noncorrosive - does not accelerate corrosion of pipes, wiring or metal studs.
• Lightweight - easy to handle, can be cut with a utility knife or saw.