AP® Foil25 Polyiso Continuous Insulation

Johns Manville AP Foil25 is a 25-psi-compressive-strength polyiso continuous insulation board consisting of a closed-cell polyisocyanurate foam core bonded on each side to a foil facer. It is intended for the same applications as standard AP Foil but is particularly well suited to below-grade residential use and behind certain commercial claddings where the attachment method benefits from a higher compressive-strength sheathing.

AP Foil25 carries the same testing and certifications as standard AP Foil — including ASTM E84 Class A and the same NFPA 285 assembly approvals — and is available in thicknesses from 1.65" to 3.0" in 4'×8', 4'×9', and 4'×10' sheets. Custom thicknesses within that range may be available upon request.