Johns Manville AP™ Foil-Faced Foam Sheathing board is rigid Polyisocyanurate foam sheathing that provides exceptional heat, moisture and air control to protect your building's exterior walls, and when installed correctly, eliminates all major thermal bridges that cause heat loss. Continuous exterior sheathing required per building codes in many states.
Lightweight: easy to handle, can be cut with a utility knife or saw
High Energy Efficiency: Polyiso has the highest R-value per inch of any rigid board insulation
Low Permeability: Ideal for controlling condensation in walls
Can be used in residential construction as insulated sheathing in above grade exterior walls, above and below grade interior walls, basements, crawl spaces, attic, and cathedral ceilings as well as Type I-IV commercial applications
One side has a reflective foil face typically installed toward the warm air surface to reflect energy back toward the dwelling and the other side has a white non-reflective foil face typically installed toward the interior
Does not melt when exposed to flame versus other types of rigid foam board (ASTM E84)
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
Produced with an EPA-compliant hydrocarbon-based blowing agent that has zero Ozone Depletion Potential (ODP) and virtually no Global Warming Potential (GWP)
Meets both CFC- and HCFC-free specification requirements