SKU: 86266074822

Johns Manville R-2.9 (16 PSI) AP Foil-Faced Polyiso Foam Board Insulation, 1/2 in. x 4 ft. x 8 ft.

Sale price$17.75 Regular price$19.72
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Ships within 48 hours · Estimated delivery Aug 1 - Aug 6

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Description

Johns Manville R-2.9 (16 PSI) AP Foil-Faced Polyiso Foam Board Insulation, 1/2 in. x 4 ft. x 8 ft.AP Foil Faced Polyiso Foam Board, 1 2 x 4x8, R 2. 9 Rigid polyisocyanurate foam board with reflective foil facer delivers high thermal performance in a lightweight, easy to cut panel. Designed for continuous insulation, it helps control heat, moisture, and air in walls, basements, crawl spaces, and ceilings. Key Features: High R Value Efficiency: Delivers R 2. 9 at 1 2 in. thickness with up to R 6 per inch for space saving thermal performance Multi

AP Foil-Faced Polyiso Foam Board, 1/2 x 4x8, R-2.9

Rigid polyisocyanurate foam board with reflective foil facer delivers high thermal performance in a lightweight, easy-to-cut panel. Designed for continuous insulation, it helps control heat, moisture, and air in walls, basements, crawl spaces, and ceilings.


Key Features:

  • High R-Value Efficiency: Delivers R-2.9 at 1/2 in. thickness with up to R-6 per inch for space-saving thermal performance
  • Multi-Barrier Protection: When installed correctly, functions as water-resistive, vapor, and air barrier to reduce drafts and moisture
  • Reflective Foil Facers: One reflective side to face the warm air surface; opposite side is white non-reflective for interior orientation
  • Lightweight, Easy Install: Simple to score and snap or cut with a utility knife; suitable for residential and Type I–IV commercial uses
  • Low Permeability & Fire Performance: Foil facing helps control condensation; thermoset polyiso stays intact during fire exposure (ASTM E84)

Specifications Table:

Specification Details
Series Name AP Foil
Insulation Type Polyisocyanurate (polyiso) rigid foam board
Faced/Unfaced Foil-faced (one reflective, one white)
Actual Thickness (Inches) 0.5
Actual Width (Feet) 4
Actual Length (Feet) 8
Coverage Area 32 sq ft per board
R-Value (Board) R-2.9
R-Value per Inch 6
Use Location Indoor
For Use in Walls Yes
For Use in Ceilings Yes
For Use in Basements Yes
For Use in Crawlspaces Yes
Fits 2 x 4 Walls Yes
Fits 2 x 6 Walls Yes
Water Resistant No
Vapor Retardant Yes
Mold Resistant No
Sound Barrier No
Formaldehyde Free Yes
ENERGY STAR Certified Yes
GREENGUARD Gold Certified Yes
Fire Performance Thermoset material remains intact during fire exposure (ASTM E84)
Package Quantity 1
Package Weight (lbs.) 3.21
Warranty 20-year limited

Frequently Asked Questions (FAQ):

Q: What are the panel dimensions and coverage?
A: Each board is 1/2 in thick by 4 ft by 8 ft and covers 32 sq ft.


Q: Which way should the foil face during installation?
A: In most applications, the reflective foil side faces the warm air/exterior and the white non-reflective side faces the interior; follow local codes and cladding exceptions.


Q: Can this act as an air or vapor barrier?
A: Yes. When properly installed, AP Foil-Faced Polyiso functions as a water-resistive, vapor, and air barrier.


Q: Is it easy to cut and handle?
A: Yes. The lightweight board can be cut with a utility knife or saw for quick fitting.


Q: What certifications does it carry?
A: GREENGUARD Gold and ENERGY STAR certified; formaldehyde-free with a 20-year limited warranty.


Sleek, Space-Saving Thermal Armor

This foil-faced board wraps your envelope in a crisp, architectural sheen while quietly elevating comfort. The reflective facer becomes a modern, minimal layer that bounces warmth where you want it most. Pair it behind clean-lined cladding or gypsum for an efficient, tailored shell. It’s the smart, elegant essential for a luxe, well-insulated sanctuary.


Upgrade your envelope with AP Foil-Faced Polyiso and get high R-value performance in a slim, easy-to-install board—add it to your project today.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 86266074822

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