Kingspan K106 Cavity Wall Board

Kingspan Kooltherm K106 Cavity Wall Insulation Board

Kingspan Kooltherm K106 is a premium full-fill cavity wall insulation board, engineered for outstanding thermal performance in masonry cavity wall constructions. With an exceptional thermal conductivity of just 0.019 W/m·K, it enables thinner wall constructions while still achieving or exceeding regulatory U-value targets.

Unlike many cavity products, K106 features square edges, not tongue-and-groove, making it ideal for tightly stacked installations in vertical wall builds. The board is faced on the inner side with a low-emissivity foil composite to reduce radiant heat transfer, while the outer side is protected by a water-tight, vapour-open polypropylene fleece, helping to repel moisture and maintain breathability within the cavity.

Key Technical Features:

• Board size: 1200 x 450 mm (nominal)

• Insulant thicknesses: 90 mm, 115 mm

• Thermal conductivity: 0.019 W/m·K

• Compressive strength: Exceeds 100 kPa

• Facing: Foil inner face / fleece outer face

• Edge detail: Square edge (not tongue-and-groove)

• Euroclass rating: F (under EN 13501-1)

Performance & Compliance:

• Suitable for full-fill cavity wall applications

• Designed for 10 mm residual cavities up to 25m building height (subject to exposure zone)

• BBA certified (Certificate No. 16/5299)

• Manufactured to ISO 9001, 14001, 45001, and 50001 standards

• Resistant to moisture, fungi, and microbial growth

Ideal For:

• New build cavity wall systems (brick and block)

• Energy-efficient homes, commercial and residential walls

• Projects requiring slim wall build-ups with maximum U-value performance

At Insulation UK, we supply Kingspan K106 in popular sizes for fast delivery. Whether you're targeting thermal regulations or Passive House standards, K106 is a top-tier solution that balances performance, durability, and ease of installation.