Meet Kingspan Kooltherm K12 Internal Insulation Board — a premium 4 ft x 8 ft insulation solution crafted for wood or steel frame walls. If you want top-tier performance with straightforward installation, this board delivers without the drama.

Key Features & Design

• Core material: fiber–free rigid thermoset phenolic insulation core faced on both sides with a low emissivity composite foil facing.
• Moisture & air resistance: Resists moisture penetration and is unaffected by air infiltration.
• Fire performance: Negligible smoke developed; Excellent fire performance; NFPA 285 compliant; ASTM E 84 rating of 25/20 (flame-smoke).
• Ease of installation: Easy to handle and install in framed walls.
• Environmental impact: Zero ODP, low GWP, HCFC and CFC free.
• Applications: Suitable for between studs or as insulating sheathing in wood or steel frame walls.
• Board Size: 47.24 In x 95.98 In
• Available thicknesses: 1.18 In, 1.97 In, 2.95 In
• Boards Per Pallet: 80 (1.18 In), 48 (1.97 In), 32 (2.95 In)
• Sqft per Pack: 2519.20 (1.18 In), 1511.52 (1.97 In), 1007.68 (2.95 In)

Designed to deliver dependable thermal performance with a clean, professional finish, these boards keep climate control predictable and installations tidy. Whether you’re upgrading an existing build or starting fresh, Kingspan Kooltherm K12 Internal Insulation Board offers standout safety, efficiency, and sustainability—without the guesswork.