Johns Manville AP Foil-Faced Polyisocyanurate Board Insulation, R-2.9, 0.5-in x 4-ft x 8-ft
AP Foil-Faced Polyiso Board Insulation, 0.5-in x 4x8, R-2.9
Rigid polyisocyanurate foam sheathing with foil facer delivers high thermal performance and air, vapor, and water-resistive barrier functions when properly installed. Ideal as continuous exterior insulation for above-grade walls and various residential and commercial applications.
Key Features:
- High R-Value per Inch: Polyiso core provides R-2.9 at 0.5-in thickness (R-6 per inch) for efficient thermal control
- Dual Foil Facers: Reflective exterior foil and white interior foil enhance energy performance and installation orientation
- Barrier Functions: When properly installed, acts as water-resistive barrier, vapor barrier, and air barrier
- Lightweight & Easy to Cut: Handles easily and can be cut with a utility knife or saw for quick installs
- Low Permeability & Fire Performance: Helps control condensation and remains intact during fire exposure (ASTM E84)
Specifications Table:
| Specification | Details |
|---|---|
| Series Name | AP Foil |
| Actual Length (Feet) | 8 |
| Actual Thickness (Inches) | 0.5 |
| Actual Width (Feet) | 4 |
| Common Length (Feet) | 8 |
| Common Thickness (Inches) | 0.5 |
| 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 | 2.9 |
| Mold Resistant | No |
| Package Quantity | 1 |
| R-Value per Inch | 6 |
| Sound Barrier | No |
| Use Location | Indoor |
| Vapor Retardant | Yes |
| Water Resistant | No |
| ENERGY STAR Certified | Yes |
| GREENGUARD Gold Certified | Yes |
| Warranty | 20-year limited |
Frequently Asked Questions (FAQ):
Q: Can this be used as continuous exterior insulation on residential walls?
A: Yes—AP Foil-Faced Polyiso is designed for use as insulated sheathing and continuous exterior insulation on above-grade walls.
Q: Which side faces outward during installation?
A: In most applications, install the reflective foil side toward the exterior and the white non-reflective side toward the interior.
Q: Does this product function as an air or vapor barrier?
A: When properly installed, it serves as an air barrier and vapor barrier, and also as a water-resistive barrier.
Q: How do I cut and handle the boards?
A: The lightweight boards can be cut with a utility knife or saw for straightforward handling and fitting.
Q: Is it environmentally friendly?
A: It’s produced with an EPA-compliant blowing agent with zero ODP and virtually no GWP, and meets CFC- and HCFC-free requirements.
Sleek Thermal Shield for Modern Envelopes
This foil-faced panel brings an architectural crispness to wall assemblies, creating a seamless, polished envelope that heightens energy performance. The reflective surface is a standout—clean, modern, and purposeful—sending warmth back where you want it. Use it as continuous exterior insulation to streamline façades and reduce thermal bridging. It’s a quiet luxury upgrade that makes homes feel smarter, tighter, and undeniably refined.
Upgrade your envelope with JM AP Foil-Faced Polyiso and lock in efficient, code-ready performance today.
Original: $22.35
-70%$22.35
$6.71Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
AP Foil-Faced Polyiso Board Insulation, 0.5-in x 4x8, R-2.9
Rigid polyisocyanurate foam sheathing with foil facer delivers high thermal performance and air, vapor, and water-resistive barrier functions when properly installed. Ideal as continuous exterior insulation for above-grade walls and various residential and commercial applications.
Key Features:
- High R-Value per Inch: Polyiso core provides R-2.9 at 0.5-in thickness (R-6 per inch) for efficient thermal control
- Dual Foil Facers: Reflective exterior foil and white interior foil enhance energy performance and installation orientation
- Barrier Functions: When properly installed, acts as water-resistive barrier, vapor barrier, and air barrier
- Lightweight & Easy to Cut: Handles easily and can be cut with a utility knife or saw for quick installs
- Low Permeability & Fire Performance: Helps control condensation and remains intact during fire exposure (ASTM E84)
Specifications Table:
| Specification | Details |
|---|---|
| Series Name | AP Foil |
| Actual Length (Feet) | 8 |
| Actual Thickness (Inches) | 0.5 |
| Actual Width (Feet) | 4 |
| Common Length (Feet) | 8 |
| Common Thickness (Inches) | 0.5 |
| 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 | 2.9 |
| Mold Resistant | No |
| Package Quantity | 1 |
| R-Value per Inch | 6 |
| Sound Barrier | No |
| Use Location | Indoor |
| Vapor Retardant | Yes |
| Water Resistant | No |
| ENERGY STAR Certified | Yes |
| GREENGUARD Gold Certified | Yes |
| Warranty | 20-year limited |
Frequently Asked Questions (FAQ):
Q: Can this be used as continuous exterior insulation on residential walls?
A: Yes—AP Foil-Faced Polyiso is designed for use as insulated sheathing and continuous exterior insulation on above-grade walls.
Q: Which side faces outward during installation?
A: In most applications, install the reflective foil side toward the exterior and the white non-reflective side toward the interior.
Q: Does this product function as an air or vapor barrier?
A: When properly installed, it serves as an air barrier and vapor barrier, and also as a water-resistive barrier.
Q: How do I cut and handle the boards?
A: The lightweight boards can be cut with a utility knife or saw for straightforward handling and fitting.
Q: Is it environmentally friendly?
A: It’s produced with an EPA-compliant blowing agent with zero ODP and virtually no GWP, and meets CFC- and HCFC-free requirements.
Sleek Thermal Shield for Modern Envelopes
This foil-faced panel brings an architectural crispness to wall assemblies, creating a seamless, polished envelope that heightens energy performance. The reflective surface is a standout—clean, modern, and purposeful—sending warmth back where you want it. Use it as continuous exterior insulation to streamline façades and reduce thermal bridging. It’s a quiet luxury upgrade that makes homes feel smarter, tighter, and undeniably refined.
Upgrade your envelope with JM AP Foil-Faced Polyiso and lock in efficient, code-ready performance today.
