Knauf 75mm x 1200mm x 455mm Dritherm 32 Cavity Slab 3.28m2
- Knauf Dritherm 32 cavity slab measures 1200mm x 455mm x 75mm (47.2" x 17.9" x 3") for easy installation in standard wall cavities.
- Water-repellent and non-combustible mineral wool insulation designed to eliminate air gaps and improve thermal efficiency.
- Lightweight and easy to handle—cut to size on site for a precise fit between wall ties without needing retaining discs.
- Suitable for external masonry cavity walls in buildings up to 12m high, and multi-storey up to 25m in all exposure zones, including very severe areas.
- Manufactured with eco-friendly Knauf ECOSE Technology binder, reducing energy use and avoiding formaldehyde.
The Knauf Dritherm 32 75mm cavity slab is a high-performance glass mineral wool insulation designed for external masonry cavity walls. Ideal for builders, bricklayers and site managers looking for a reliable, non-combustible insulation that fits tightly to prevent thermal bridging. Please note, slabs are sized to fit between wall ties and no retaining discs are required.
Application
This cavity slab is perfect for thermally insulating external masonry walls on new build or refurbishment projects. Its water-repellent and rot-proof properties make it ideal for all exposure zones, including very severe weather conditions. The slabs 'knit' together to eliminate air gaps, ensuring consistent insulation performance. Suitable for buildings up to 12 metres and multi-storey projects up to 25 metres high, it supports efficient, straightforward installation without the need for cavity barriers.
Dimension
- 1200mm x 455mm x 75mm (47.2" x 17.9" x 3")
Material
- Glass mineral wool with a bio-based ECOSE binder (no added formaldehyde)
Type
- Cavity wall insulation slab
This product combines thermal efficiency with practical handling benefits, making it a smart choice for busy sites requiring bulk orders and consistent quality. Image for illustration only.
Delivery
Important: The following delivery information applies only to orders placed online.
Delivery Times
When placing your order, you will be able to view available delivery times at the checkout.
Please note: while we aim to deliver within 2–3 business days, this is subject to stock availability. A member of our team will be in touch after you place your order to confirm your delivery date.
Click & Collect is also available from selected branches. However, please be aware that stock levels can fluctuate, so we’ll confirm product availability and collection timing once your order is placed.
Delivery Charges
Orders over £150 ex VAT within our local delivery area qualify for free delivery. This excludes palletised or specialist products.
For orders under £150 ex VAT, standard delivery is £10 plus VAT. Certain products have specific delivery costs:
- Civil Engineering products: £30 + VAT.
- Roofing Tiles under £249.99 ex VAT: £60 + VAT.
Delivery charges and policies may vary at the discretion of our branches, and we reserve the right to amend them as required.
We offer a variety of delivery options to meet your needs nationwide, including pallet shipping (subject to size and weight restrictions), site delivery, and same-day or next-day delivery via TradeKart (available in selected postcodes).
Delivery charges are calculated based on your location, the products ordered, and your selected delivery method. Final costs will be displayed at checkout. If you have specific delivery requirements, please contact your local branch via our Branch Finder.
For any delivery-related enquiries, please email our sales team at websales@lordsbm.co.uk.
