Description

Kingspan Kooltherm 50mm (1200×450) 5.4m2 K108

An equivalent product may be supplied. We will contact you for approval beforehand.

Upgrade the thermal efficiency of your cavity wall with this Kingspan Kooltherm 50mm thick insulation board sized at 1200 mm × 450 mm, covering around 5.4 m² per pack. Engineered for partial-fill cavity wall applications, the board features a rigid phenolic insulation core with foiled facings that enhance performance by reducing heat loss and improving energy efficiency.

Thanks to its ultra-low thermal conductivity of around 0.019 W/m·K, this board allows achievement of target U-values with less thickness — meaning you can maintain more internal floor space and better retain the residual cavity needed for ventilation or drainage. The flat board format (1200 × 450 mm) aligns with standard wall tie spacings, helping simplify installation, reduce cutting waste, and speed up site work.

Durability is built in: the phenolic core is fibre-free and dimensionally stable, while the low-emissivity foil facings protect against air infiltration and moisture ingress. Additionally, the board maintains a clear cavity when installed correctly, helping to resist wind-driven rain and meet building regulations.

Whether you’re working on new builds, extensions or retrofit works, this insulation solution helps you enhance wall performance, reduce heating bills and comply with current building standards with minimal thickness increase.

Key Features

• Board size: 1200 mm × 450 mm (~0.54 m² each)

• Thickness: 50 mm (approximate pack coverage ~5.4 m²)

• Core: Rigid thermoset phenolic insulation

• Thermal conductivity: approx. 0.019 W/m·K

• Facings: Low emissivity foil on both faces

• Suitable for partial-fill cavity wall applications

• Panels sized to standard wall tie pattern for efficient installation

Benefits

• Achieve high thermal performance with minimal thickness, retaining usable space.

• Simplified installation: boards match standard dimensions, less waste and faster on site.

• Maintains cavity clearance for effective moisture management and ventilation.

• Durable, long-lasting performance thanks to phenolic core and foil facings.

• Ideal for new builds or refurbishment where improved insulation and regulation compliance are required.

For bulk orders or trade pricing, contact us for a competitive quote.
If you have any questions regarding this product call 0113 204 7303 or contact us here.