Johns Manville AP™ Foil-Faced Polyiso Foam Sheathing boards are available in R-Values up to R-28 and offer a reflective foil facer on one side and a non-reflective facer on the other. AP Foil provides exceptional heat, moisture and air control and, when installed correctly, eliminates all major thermal bridges that cause heat loss. The rigid board sheathing has a one-inch layer of continuous insulation for maximum wall and worksite efficiency.

Advantages

• Thermally Efficient: Effective resistance to heat transfer, with R-values up to R-28.
• Water-Resistant Barrier: Meets the ICC-ES AC71 acceptance criteria.
• Vapour Barrier: Class I vapor retarder at one inch.
• Air Barrier: Meets the Air Barrier Association of America boardstock criteria, when properly installed.
• Lightweight: Easy to handle and may be cut with a utility knife or saw.