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.

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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

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Specifications Table:

Specification	Details
Series Name	AP Foil
Actual Length (Feet)	8
Actual Thickness (Inches)	1
Actual Width (Feet)	4
Common Length (Feet)	8
Common Thickness (Inches)	1
Common Width (Feet)	4
Coverage Area (Sq. Feet)	32
Faced/Unfaced	Faced
Fire Resistant	No
Fits 2 x 4 Walls	Yes
Fits 2 x 6 Walls	Yes
For Use in Attics	Yes
For Use in Basements	Yes
For Use in Ceilings	Yes
For Use in Crawlspaces	Yes
For Use in Doors	No
For Use in Duct	No
For Use in Electrical	No
For Use in Floors	No
For Use in Garage Doors	No
For Use in Masonry	No
For Use in Plumbing	No
For Use in Vents	No
For Use in Walls	Yes
For Use in Windows	No
For Use on Glass	No
For Use on Insulation	Yes
For Use on Metal	No
For Use on Plastic	No
For Use on Wood	Yes
Formaldehyde Free	Yes
Insulation Type	Polyisocyanurate
Maximum R-Value	6
R-Value per Inch	6
Mold Resistant	No
Package Quantity	1
Sound Barrier	No
Use Location	Indoor
Vapor Retardant	Yes
Water Resistant	No
ENERGY STAR Certified	Yes
GREENGUARD Gold Certified	Yes
Warranty	20-year limited
UNSPSC	30141500

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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.

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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.

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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.

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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.

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

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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.

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