AP Foil-Faced Polyiso Board Insulation, R-6 (1-in)

Rigid polyisocyanurate foam sheathing delivering R-6 per inch for high energy efficiency in walls, ceilings, basements, and more. Foil-faced on both sides to act as air, vapor, and water-resistive barriers when properly installed. Lightweight panels cut easily for fast, professional results.

Key Features:

• High R-Value per Inch: Polyiso core delivers R-6.0 in a 1-in board for efficient thermal performance
• Dual Foil Facings: Reflective and non-reflective faces help control heat and condensation; functions as air/vapor/water-resistive barrier when installed correctly
• Easy to Handle and Cut: Lightweight rigid board trims with a utility knife or saw for quick installation
• Versatile Applications: Suitable for above-grade exterior walls, interior walls, basements, crawl spaces, attics, and cathedral ceilings; residential and Type I–IV commercial use
• Low Environmental Impact: Produced with EPA-compliant blowing agent; GREENGUARD Gold and ENERGY STAR certified

Specifications Table:

Frequently Asked Questions (FAQ):

Q: Can I use this board as continuous exterior insulation?
A: Yes. When properly installed, AP Foil-Faced Polyiso functions as continuous insulation and as air, vapor, and water‑resistive barriers.

Q: Which side should face outward?
A: Typically install the reflective foil face toward the warm air/exterior and the white non‑reflective face toward the interior; follow siding exceptions noted by JM.

Q: How do I cut and install the panels?
A: Score with a utility knife or use a saw; fasten per local code and manufacturer instructions for walls, ceilings, and other approved locations.

Q: Is this product fire resistant?
A: As a thermoset material, AP Foil maintains integrity in ASTM E84 testing versus some rigid foams, but it is not classified as fire resistant; follow code requirements.

Q: What certifications does it carry?
A: ENERGY STAR and GREENGUARD Gold; formaldehyde-free.

Sleek, High‑Performance Insulation with Reflective Flair

This foil-faced board introduces a crisp, modern layer that elevates envelopes with both polish and performance. The shimmering surface is a design-forward detail that quietly powers energy savings behind the scenes. Use it to create a seamless, continuous thermal wrap that keeps interiors calm and controlled. It’s a sophisticated essential for building comfort with luxury in mind.

Upgrade your envelope with Johns Manville AP Foil and lock in efficient, code-ready performance—add to cart today.