Knauf Dritherm 50mm Cavity Slab 37 Standard 6.55m2 Earthwool

£32.21 £26.84
In stock
Product Description

Knauf DriTherm Cavity Slab 37 is a water-repellent glass mineral wool slab, designed for use in external full-fill masonry cavity walls. It offers excellent thermal performance with thermal conductivity from 0.032 to 0.037 W/mK.

It is non-combustible with the best possible Euroclass A1 reaction to fire classification and is manufactured using Knauf insulation's unique bio-based binder, ECOSE® Technology.

Size: 455mm x 1200mm

Pack size: 12 Slabs

Other available thicknesses: 75mm & 100mm

We are happy to help with enquiries, stock availability or any technical help you require, however for security reasons we cannot take orders over the phone. So if you need to chat give us a call on 03301231761 or email us at [email protected].

What is Knauf DriTherm Cavity Slab 37 50mm? 

Knauf DriTherm Cavity Slab 37 50mm is designed to conveniently fit in your construction project. They are for the thermal insulation of masonry cavity external walls and are created to fully fill the cavity. These slabs are marshmallow soft, lightweight, and easy to handle. Slabs are supplied in polythene shrink wrap, however, store them indoors to protect them. 

Knauf DriTherm Cavity 37 slabs aren’t harmful to the environment and contribute zero ozone depletion potential (ODP) and have a low global warming potential (GWP). The glass mineral wool is made from renewable materials, making them a sustainable purchase. 


Features and benefits of Knauf DriTherm Cavity Slab 37 50mm: 


  • Cavity barriers are not required with non-combustible full-fill insulation, minimising the risk of fire spreading through a cavity
  • Water repellent and BBA certified for use in all exposure zones, including those in very severe areas
  • Slabs are sized to fit between wall ties without the need for retaining discs

Applications for Knauf DriTherm Cavity Slab 37 50mm: 


  • Masonry cavity walls
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More Information
Supplier Part Number316650
Pack Size12
Size455mm x 1200mm

Orders and Delivery

Free delivery if your order is over £300 ex VAT. Orders between £100 - £300 ex VAT will be subject to a delivery charge of £50 ex VAT. Please note, we are unable to accept orders less than £100 ex VAT

When ordering on line you can specify the date of delivery, however we would not be able to specify the time of delivery on that day.

• Please note that we have a number of large vehicles, including articulated vehicles that may be used for delivery. Please advise us in the comments on your order if access to the delivery address is limited.

• Due to insurance guidelines, delivery personnel are unable to enter private residences. Delivery will be as far as possible to the kerbside of the delivery address. The recipient of the products is responsible for any additional lifting once the delivery has been made. Please bear in mind that Insulation products can be bulky and / or heavy.

• The delivery driver will require a signature to confirm the goods have been received.

 † Unfortunately we, Insulation Express, cannot deliver to the Highlands & Islands of the UK. However we will be happy to deliver to a freight forwarding company on your behalf.


Returns and Refunds

In the unlikely event that you need to return an item, please contact our team on [email protected] within 14 days of accepting delivery of the item.

Restocking charges may apply. We will discuss this with you upon receipt of the cancellation request. Restocking charges will be applied where the products are no longer required AND NOT for goods returned because either defective or damaged.

We usually charge 30% of value (minimum £25.00).

Please note that we cannot accept returns on special orders. Special orders may consist of items sent via third party shipping companies or made to measure products. If you are unsure on whether or not your item is a special order, please contact us on [email protected] prior to placing the order.

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