Johns Manville AP™ Foil-Faced Foam Sheathing

Johns Manville AP Foil-Faced Polyiso Foam Sheathing boards are available up to RSI 5.09 (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. 


Performance Advantages:

  • Thermally Efficient: Effective resistance to heat transfer, with R-values up to R-28 (RSI-5.09). 
  • Water-Resistant Barrier: Meets the NBC acceptance criteria CCMC-13104-L.
  • Vapour Barrier: Class I vapour retarder at 25mm (1”). 
  • Lightweight: Easy to handle and can be cut with a utility knife or saw.


More BUILT GREEN® Approved Products by Johns Manville:

Formaldehyde-Free Insulation

Formaldehyde-Free™ Fibre Glass Insulation

Vent Chutes




Manufacturer: Johns Manville
Contact: Jerry Wik
Phone: 403.227.2288



BUILT GREEN® Checklist

This product earns points by providing these functions:

1.1.2  Replace exterior wood sheathing with insulating sheathing and structurally required metal bracing.