Knauf Dritherm Cavity Slab 32 - 125mm - 455 x 1200mm - 2.184m2 Per Pack
Earthwool DriTherm Cavity Slab 32 Ultimate is a high-density slab offering very high levels of the...Earthwool DriTherm Cavity Slab 32 Ultimate is a high-density slab offering very high levels of thermal resistance for the thermal insulation in residential and non-residential masonry cavity external walls. It holds an Agrement certificate by the BBA for use in all exposure zones, including those in very severe areas. Engineered to adapt to any slight imperfections in the substrate and knit together, eliminating any air gaps and preserving thermal performance for the lifetime of the building. It friction fits between wall ties, so there is no need for ancillary products, such as retaining discs or jointing tape. It is a full-fill solution that doesn't require cavity barriers. This glass mineral wool slab for full-fill masonry cavity walls has a thermal conductivity of 0.032 W/mK, providing enhanced insulation performance. The 125mm thickness suits wide cavities in high-insulation builds. Manufactured with a high recycled glass content and ECOSE® Technology, it delivers advanced thermal insulation while remaining vapour permeable, helping the wall construction to breathe. With a thermal conductivity of 0.032 W/mK, it provides superior energy efficiency, enabling lower U-values to be achieved at reduced insulation thicknesses. Rated Euroclass A1 non-combustible and fully BBA certified for all UK exposure zones, it ensures proven fire safety, durability, and long-term reliability. At 125mm thick, the slab is designed for wider cavity walls in new build housing, offering a higher level of thermal performance than mid-range options such as 100mm. This increased depth helps achieve lower U-values in line with stricter energy efficiency targets, while still allowing full-fill installation in a single layer.
Best current price£39.56from Materials Market Trading UK Ltd
The Knauf DriTherm Cavity Slab 32 - 125mm is designed for builders and architects seeking superior thermal insulation for masonry cavity external walls in residential and non-residential buildings. Its key benefit is providing very high thermal resistance, helping achieve lower U-values and enhanced energy efficiency. A potential consideration is its specific thickness (125mm), which is suited for wider cavities typical in high-insulation builds and new housing.
All features
Model Part Number
715828
Brand
Knauf Insulation
Extended Product Information
FAQs
What is the thermal conductivity of the Knauf DriTherm Cavity Slab 32 - 125mm?
The thermal conductivity is 0.032 W/mK, providing high thermal resistance.
Can this product be used in any weather exposure zone?
Yes, it is Agrement certified by the BBA for use in all UK exposure zones, including very severe areas.
Does this insulation require additional fixings?
No, the slab is designed to friction fit between wall ties and does not require ancillary products like retaining discs or jointing tape.
Is this product suitable for all types of cavity walls?
It is specifically designed for full-fill masonry cavity external walls. The 125mm thickness is best suited for wider cavities, often found in high-insulation builds and new housing.
What is the fire rating of this insulation?
It is rated Euroclass A1, meaning it is non-combustible.
How does the adaptive fit work?
The high-density slab is engineered to compress and adapt to slight imperfections in the substrate, ensuring a tight fit and eliminating air gaps for optimal thermal performance.
Is the product environmentally friendly?
Yes, it is manufactured with a high recycled glass content and utilizes ECOSE® Technology.
Troubleshooting
Slab does not fit snugly between wall ties
Ensure no obstructions are present. If the cavity is too narrow, a thinner slab may be required. If the cavity is exceptionally wide, consider alternative insulation methods or consult manufacturer guidelines.
Visible air gaps after installation
Slabs are designed to adapt. If significant gaps persist, check for debris in the cavity or ensure the slab is correctly seated. Re-adjust gently to allow it to knit together.
Slab appears damaged upon arrival
Inspect all packs before installation. Contact the supplier immediately if slabs are significantly damaged and may compromise performance.
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