Kingspan Kooltherm K5 External Wall Board - 1200mm x 600mm - All Thicknesses

• Among the thinnest commonly used External Wall Insulation (EWI), perfect for preserving internal space within buildings
• Ideal for buildings that cannot be insulated internally
• Suitable for use behind traditional and lightweight polymer-modified renders
• Lightweight insulation that is easy to transport, handle, and install

Masonry Walls: Kingspan K5 is suitable for use in masonry walls due to its excellent thermal performance and compatibility with various construction methods. The rigid insulation board offers high thermal resistance, helping to reduce heat loss through the wall and improve energy efficiency. Its lightweight nature makes it easy to handle and install, minimising the load on the masonry structure. Additionally, Kingspan K5 is moisture resistant, ensuring long-term durability and preventing issues like mould growth or insulation degradation. Its compatibility with masonry walls makes it an ideal choice for both new construction and retrofitting projects, providing effective thermal insulation without compromising the integrity of the wall system.

Does Kingspan insulation need a air gap?

Ventilated roofs require a 50 mm air gap above the insulation. Timber stop battens can be nailed into the side of the rafters to give the correct air gap when installing the insulation. The K5 insulated plasterboard should then be placed with the long edges running across the rafters.

What thickness of Kingspan should I use?

The most commonly purchased thicknesses of K5 are 50mm and 100mm. These thicknesses provide good thermal performance while also being easy to install between standard studwork.

Can you plaster over Kingspan?

Yes. You can add Kingspan K5 insulation to existing plastered walls and you can plaster over any boards - but you should fix them securely in place.