Kooltherm K9 Internal Insulation Board from Kingspan is premium rigid thermoset insulation designed for basement, crawlspace and attic wall applications. It delivers high-performance warmth with easy handling for both pros and DIYers who know a good thing when they see it.

Key Features & Design

• Premium performance rigid thermoset insulation.
• Higher R-value per inch than any commonly used insulation.
• Negligible smoke developed ASTM E 84 rating of 5/5 (flame-smoke).
• Unaffected by air infiltration.
• NFPA 286 compliant for exposed applications.
• Easy to handle and install.
• Manufactured with a blowing agent that has zero ODP, low GWP, HCFC and CFC free.

Available thicknesses and pallet data

• Thickness: 1.57 In — R-Value: 11.6 — Board Size: 47.24 In x 89.37 In — Boards per Pallet: 56 — Sqft per Pallet: 1641.92
• Thickness: 1.97 In — R-Value: 14.5 — Board Size: 47.24 In x 89.37 In — Boards per Pallet: 48 — Sqft per Pallet: 1407.96
• Thickness: 2.36 In — R-Value: 17.4 — Board Size: 47.24 In x 89.37 In — Boards per Pallet: 40 — Sqft per Pallet: 1172.80
• Thickness: 2.95 In — R-Value: 21.8 — Board Size: 47.24 In x 89.37 In — Boards per Pallet: 32 — Sqft per Pallet: 938.24
• Thickness: 3.94 In — R-Value: 29.1 — Board Size: 47.24 In x 89.37 In — Boards per Pallet: 24 — Sqft per Pallet: 703.68

Turn to Kooltherm K9 for reliable insulation that stands up to basement dampness, crawlspace humidity, and attic cold snaps—without the drama.