Knauf Dritherm Cavity Slab 37 Standard Earthwool

Regular price £23.02
Sale price £23.02 Regular price
Tax included.
Product description

Knauf DriTherm Cavity Slab 37 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: 

  • 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:  

  • Masonry cavity walls
Shipping & Return

Returns Policy

Your rights to return goods are protected under the EU Distance Selling Directive.

You are entitled to cancel your order and return the goods within 30 working days for a full refund, excluding the cost of delivery. Do this by contacting us by email or telephone and quoting the order number supplied to you. Your refund will be paid within 30 days. You are responsible for the cost and risk of loss or damage when returning the goods, so you should take out enough postal insurance to cover their value. This cancellation policy does not affect your rights when we are at fault - for example, if goods are faulty or mis-described.

Any goods returned should be in salable condition, if any returns don't reach us in a salable condition then they may not be liable for a full refund.

These terms apply to your order. We may change our terms and conditions at any time, so please do not assume that the same terms will apply in the future.

None of these terms affect your legal rights and these are not diminished in any way. If any term is held to be invalid under any applicable statute or rule of law, that term is automatically omitted from the terms to minimum extent necessary to comply with the law and without affecting the validity or enforceability of the remainder.


Depending on the size of your order it could be delivered in a number of ways. Smaller packages under 2kg will be delivered by Royal Mail using their 24Hr service. Medium orders up to 25kg will be delivered by Fedex (express 1-2 day service) Larger orders and any orders containing lengths over 1.2mtrs will be delivered by XDP Express. If your delivery address is within our local delivery radius then it will be delivered using our own transport, that way we can significantly minimise the risk of any damages and deliver within a set time slot. Due to the custom racks on our vans any local orders containing lengths will have the option to have them delivered in longer lengths (ie. 5Mtr fascia, soffit & cladding boards, 4mtr gutter or 5.5mtr downpipe)

All orders placed before 12noon we will aim to send out the sameday (not guaranteed, depending on how busy we are) - usually on next day delivery - all orders placed after the 12noon deadline will be sent out the following working day.

We deliver to UK Mainland (not including Scottish Highlands) only. Any customers from outside mainland UK i.e. Ireland, Scottish isles/Highlands etc. must contact us first before ordering as the delivery charge will be significantly higher, Delivery is within 3 working days to customers outside UK Mainland.