Earthwool Flexible Slab

As low as
From  £23.10  inc VAT
From  £19.25  ex VAT
In stock
Earthwool Flexible Slab
As low as
From  £23.10  inc VAT
From  £19.25  ex VAT
size: 600mm x 1200mm

Need to discusss your enquiry further? Please contact our customer services team on 0330 123 1761, who will be happy to help.

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Knuaf are currently facing manufacturing issues on low density products including Flexible slab. Unfortunately, this is expected to impact availability nationally for the coming months. 

Please call to check stock or for further details.  

Earthwool Flexible Slab for general thermal and acoustic insulation.

Flexible Slab is a multi-purpose thermal and acoustic insulation slab specifically designed for installation by friction fitting.

For general thermal and acoustic insulation. For use in applications such as internal partitions, and between timber and metal studs, rafters and floor joists.

Flexible Slab is made from non-combustible, inorganic rock mineral wool, defined as mineral wool in BS 3533: 1981, manufactured in accordance with BSI Quality Assurance Standard BS EN ISO 9001: 2000.

Flexible Slab is odourless, non-hygroscopic, rot proof, does not sustain vermin and will not encourage the growth of fungi, mould or bacteria.

Flexible Slab is free from CFCs, HCFCs and any other material with ozone depletion potential in its manufacture and content and represents no known threat to the environment.

Thermal Performance
Flexible Slab 140mm has a thermal conductivity of 0.035 W/mK. Other thickness have a thermal conductivity of 0.037 W/mK.
Fire Performance
Flexible Slab is classified as Euroclass A1 to BS EN ISO 13501-1.



  • Can be used for a wide variety of jobs including partitions and separating walls
  • Friction fits between rafters/joists etc
  • Provides excellent thermal and acoustic performance
  • Moisture tolerant
Orders and Delivery

Orders and Delivery

Christmas Deliveries

Please be aware our office will be closed from 5pm Friday 21st Dec, re-opening Wednesday 2nd Jan. 

Last available delivery date is Friday 21st Dec. Deliveres will commence on Friday 4th. 

Free deliveries on orders over £250.00 Inc VAT. For orders under £250.00 Inc VAT, a £24.00 Inc VAT delivery fee applies.

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

Returns and Refunds

In the unlikely event that you need to return an item, please contact our team on 0330 123 1885 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 25% 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 0330 123 1885 prior to placing the order.

Free delivery on orders over £250! Free delivery on orders over £250 Terms and Conditions apply

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