Atlas ACFoam Supreme Foil Faced 2 Sides 4ft x 8ft Polyiso Roof Insulation Board is a premium insulation solution for low-slope roofs. It pairs dual foil facers with a lightweight, rigid core to deliver strong thermal performance, moisture resistance, and easy installation—all in one tidy board.

Key Features & Design

• Dual foil facers enhance thermal resistance and reflect radiant heat.
• High R-value per inch for superior insulation performance.
• Lightweight, rigid foam core simplifies handling and installation.
• Compatible with multiple roof assemblies (BUR, mod-bit, single-ply).
• Layer-ready design can be installed in layers to meet custom thermal and slope design needs.

Specifications

• 1" thickness — R-5.7 • Board Size 4ft x 8ft • Sheets 48 • Pallet Coverage 1536 sq ft
• 1.5" thickness — R-8.6 • Board Size 4ft x 8ft • Sheets 32 • Pallet Coverage 1024 sq ft
• 2" thickness — R-11.4 • Board Size 4ft x 8ft • Sheets 24 • Pallet Coverage 768 sq ft
• 2.5" thickness — R-14.4 • Board Size 4ft x 8ft • Sheets 19 • Pallet Coverage 608 sq ft
• 3" thickness — R-17.4 • Board Size 4ft x 8ft • Sheets 16 • Pallet Coverage 512 sq ft
• 3.5" thickness — R-20.5 • Board Size 4ft x 8ft • Sheets 13 • Pallet Coverage 416 sq ft
• 4" thickness — R-23.6 • Board Size 4ft x 8ft • Sheets 12 • Pallet Coverage 384 sq ft