AP Foil-Faced Polyiso Foam Board, 1/2 x 4×8, 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 IIV commercial uses
• Low Permeability & Fire Performance: Foil facing helps control condensation; thermoset polyiso stays intact during fire exposure (ASTM E84)

Specifications Table:

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. Its 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 boardadd it to your project today.