Introducing Isover CWS 32, a premium glass mineral wool slab specifically designed to deliver exceptional thermal insulation for external masonry cavity walls.

Expertly crafted with a water repellent binder and composed of up to 82% recycled glass, these slabs provide a robust and flexible solution that installs effortlessly, aligning perfectly with standard wall tie spacings. With its BBA certification and Euroclass A1 fire classification according to EN 13501-1, Isover CWS 32 ensures superior performance and safety, making it an ideal choice for both residential and commercial buildings looking to enhance energy efficiency. Isover CWS 32 is committed to sustainable building practices, manufactured using 100% renewable electricity. Its impressive thermal conductivity of 0.036 W/m.K helps in effectively reducing heat loss and lowering energy costs. Available in dimensions of 1200 x 455mm and a convenient 100mm thickness, this insulation solution combines innovation with eco-consciousness, supporting the transition towards greener building methods without compromising on quality or durability.

  • Thickness: 100mm
  • Coverage: 3.28m² per pack
  • Size: 1200 x 455mm
  • Applications: External masonry cavity walls
  • Thermal Conductivity: 0.036 W/m.K
  • Material: Glass mineral wool
  • Fire Classification: Euroclass A1
  • Sustainability: Up to 82% recycled glass
  • Easy to install with resilient, flexible slabs

£4.99 Standard Delivery, or FREE on most orders over £99* (some exclusions apply)

£9.99 Next day delivery is available for orders places before 12 noon. Any orders placed for next day delivery after this time, will take 2 working days to be delivered.

Working/delivery days are Monday to Friday, deliveries will not normally be made Saturday or Sunday.

We offer a 30-day returns policy on on the majority of our items*, as long as the item is unused, undamaged and unopened**. We only ask that the postage is covered by yourself. 


* Please see our delivery page for further details on specific exceptions.

** Some products that are made to order or personalised cannot be returned.

***Exclusions apply for items shipped directly from our suppliers, and some big & bulky items may incur an additional charge. Please see our delivery page for full details. 

Be the first to review 100mm CWS 32 Cavity Wall Insulation Slab 3.28m2. Write a review

Isover 100mm CWS 32 Cavity Wall Insulation Slab 3.28m2

  • £36.36
  • (Delivery from £13.03 )
Item in Stock   |   Usually dispatched within 24 hours
Loading...
Free UK Delivery on most orders over £99
Delivery Rates & Information

Delivery Options

Standard Delivery: £4.99 - Free for all orders over £99.*
Next Day Delivery: £9.99 - Available for orders placed before 12:00 PM (Noon).

Important Delivery Notes

Next Day Delivery Cut-off: Orders placed after 12:00 PM (Noon) using Next Day Delivery will be delivered within two working days.
Working Days: Our standard delivery and shipping days are Monday through Friday. We do not normally deliver on Saturdays or Sundays.

Easy 30-Day Returns

We want you to be happy with your purchase! We offer a 30-day returns policy on all items, provided the following conditions are met:
  • The item is unused and undamaged.
  • The item is returned in its original packaging.
  • The customer is responsible for the return postage costs.

Combining Your Order

We always strive to combine your order into a single delivery. However, your order may arrive in multiple shipments if it contains:
  • Items from different warehouses (Standard items).
  • 'Direct' items (These are shipped separately and directly from the supplier) and will arrive separately from other items in your order.

*Exclusions & Additional Charges

The following items may be excluded from standard shipping rates or may incur extra delivery charges:
  • Items Shipped Directly from Suppliers ('Direct' items).
  • Certain Large or Bulky Items.
Want it by Wednesday 14th October? Order within 4 days, 15 hours, 29 minutes