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Bradfords£40.19Visit shop Knauf Insulation Dritherm Cavity Slab 37 Mineral Wool Insulation 75x455x1200mm Pack of 8
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The Knauf Dritherm Cavity Slab 37 is designed for builders and homeowners seeking premium thermal insulation for masonry cavity walls in both residential and commercial projects. Its key benefit is delivering excellent thermal efficiency (0.037W/mK) and water-repellent properties, ensuring a comfortable and durable building envelope. A potential caveat for users is the need for precise installation to avoid air gaps, as it's designed for full or partial fill without retaining discs. This product offers a sustainable, safe, and easy-to-handle insulation solution.
| Model Part Number | Dritherm Cavity Slab 37 |
|---|---|
| Brand | Knauf |
The thermal conductivity is 0.037W/mK, indicating excellent thermal insulation properties.
No, it is specifically designed for masonry cavity wall applications. It is not suitable for solid walls or timber frame constructions.
No, it is manufactured using ECOSE® Technology, which means it is free from added phenol and formaldehyde, and has low VOC content.
Yes, it has a Euroclass A1 Reaction to Fire classification, meaning it is non-combustible and suitable for buildings up to 12m in height.
The slabs are placed vertically within the cavity and typically friction-fit between wall ties, often without the need for additional fixings.
It has zero Ozone Depletion Potential (ODP) and zero Global Warming Potential (GWP), making it an environmentally responsible choice.
One pack contains 8 slabs and covers approximately 4.37m².
Verify wall tie spacing and cavity width. Minor adjustments may be needed. If significant gaps occur, consider alternative insulation methods or consult building specifications.
Ensure slabs were stored in a dry location. If the building environment is damp, allow the area to dry before proceeding. The product is water-repellent, but prolonged exposure before installation can lead to surface moisture.
Use a sharp insulation knife or saw. Cut on a flat surface for precision. The low-dust composition should minimize airborne particles.
Setup:
Installation involves placing the slabs vertically within the masonry cavity. The slabs are designed to friction-fit between wall ties, eliminating the need for additional fixings or retaining discs in most standard cavity wall constructions. Ensure the cavity is free from debris before installation. For partial fill, maintain the specified cavity width as per building regulations.
Compatibility:
Primarily designed for masonry cavity walls. Ensure compatibility with wall tie spacing and cavity width. It is not intended for use in timber frame constructions or as external wall insulation directly applied to the substrate.
Care:
Knauf Dritherm Cavity Slab 37 requires minimal ongoing care once installed. Its inherent properties resist degradation. Store packs flat in a dry environment before installation to protect from moisture. During installation, minimal dust is produced, but standard good practice for handling insulation materials, such as wearing gloves and eye protection, is recommended. Clean tools after use with water.
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