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B&Q£258.00Visit shop B&Q - 100mm Kooltherm K108 Cavity Insulation Board 1200mm X 450mm (X5 Boards)
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The Kingspan Kooltherm K108 Cavity Insulation Board is designed for professional builders and contractors looking to optimize the thermal efficiency of partial-fill masonry cavity walls. Its primary benefit is providing superior thermal resistance in a slim profile, allowing for better energy performance without significantly increasing wall thickness; however, it requires precise installation with wall ties to ensure a continuous air gap and effective moisture resistance.
| Model Part Number | K108 |
|---|---|
| Brand | Kingspan |
No, the K108 is specifically designed as a partial-fill insulation board and must be used with a clear cavity.
This specific variant is 100mm thick.
No, a standard fine-toothed hand saw is sufficient for cutting the rigid phenolic core.
A minimum of three wall ties per 1200mm x 450mm board is recommended to ensure stability.
Yes, it features a low-emissivity foil facing designed to reflect heat and improve thermal resistance.
Store them inside or under cover on a flat, dry surface, ideally off the ground to prevent moisture damage.
Check that the wall ties are correctly spaced and set to the standard depth for a 100mm board thickness.
Ensure boards are tightly butted together. Use a suitable construction-grade foil tape to seal joints if gaps exceed 2mm.
Verify that no mortar snots are accumulating on the wall ties or the face of the insulation during the outer leaf build.
Installation requires standard masonry wall ties suited for partial-fill applications. The boards are typically installed as the inner leaf rises, ensuring that each board is secured with a minimum of three wall ties to prevent movement. When cutting the boards, use a fine-toothed saw to achieve clean edges, which helps in creating tight, gap-free joints. Avoid storing the boards in direct contact with the ground; keep them under cover on a flat, dry surface to prevent moisture ingress or physical damage to the foil facing. Ensure that the cavity remains free of mortar droppings during construction, as these can create bridges for moisture and compromise thermal performance.
