Kooltherm K106 Full Fill Cavity Board Insulation

When you're looking for a high-performance, full-fill cavity insulation that offers more than just thermal efficiency, Kooltherm K106 delivers on all fronts. Designed with a 10mm residual cavity, it provides excellent insulation while offering protection against moisture ingress—thanks to its water-tight, vapour-open polypropylene fleece facing. With a remarkably low thermal conductivity of 0.019 W/mK, K106 helps you meet required U-values without the need for bulky materials. This makes it a smart choice for new builds where space and performance are both priorities.

Why Choose Kooltherm K106?

Exceptionally thin and efficient, allowing high thermal performance with minimal wall thickness. Features a vapour-open fleece outer layer that prevents moisture penetration while still allowing the wall to breathe. Ideal for full-fill cavity wall construction, particularly where long-term thermal performance and moisture protection are key. Lightweight and easy to handle, making transport and installation quicker and simpler on-site. Compatible with BIM systems for integrated building design and planning. Part of Kingspan’s Kooltherm range—known for delivering industry-leading thermal performance.

Board Size & Coverage

90mm thick Board size: 1200mm x 450mm Coverage: 2.16m² per Pack

Frequently Asked Questions

1. What makes Kooltherm K106 different from other cavity insulation boards?

K106 is specially designed for **full-fill cavity wall applications** and features a **unique fleece outer layer**. This makes it highly resistant to moisture while still delivering one of the **best thermal conductivities** available.

2. Is Kooltherm K106 suitable for all climates?

Yes, thanks to its **vapour-permeable yet waterproof facing**, it performs well in both wet and dry climates. It helps maintain the integrity of the building envelope without compromising on thermal efficiency.

3. Can I install K106 myself, or is a professional needed?

While the boards are lightweight and simple to handle, **professional installation is recommended**, especially for ensuring the correct cavity alignment and moisture protection in compliance with building regulations.

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