Knauf 75mm DriTherm 37

Dritherm Cavity Slabs are specially designed insulation for use in full fill external Masonry Cavity Wall.

Slabs are 455mm wide to suit standard vertical wall tie spacings

Water repellent

BBA approved for use in all exposure zones

Slabs ‘knit’ together, eliminating air gaps between adjacent slabs

Material: Glass mineral Wool.

Thermal Conductivity (W/mK): 0.035

Thermal Resistance (R Value): 1.4 Euroclass Reaction to Fire Classification (A1-F): A1

£27.96 per Pack(s)
In stock online
Please call in advance to check your local branch's availability
Product code
Stock availability ()
  • Bath: 9
  • Bedminster: 9
  • Fishponds: 10
  • Lockleaze: 45
  • Marlborough: 53
  • Stonehouse: 8
  • Swindon: 151
  • Wincanton: 25
  • Worcester: 39
  • Yate: 2

Earthwool DriTherm Cavity Slabs are non-combustible Glass Mineral Wool slabs, manufactured using our revolutionary ECOSE® Technology and a water repellent additive, designed for use in external masonry cavity walls to provide a full-fill insulation solution which is installed as walls are being built. They are 455mm wide to suit standard vertical wall tie spacings allowing a closed joint with adjacent slabs.
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We deliver

When you place an order for delivery, we’ll ask when and where you want it to go. We understand that time is money in the building industry, which is why we’ll always do our best to fit around you. Our delivery service is capable of getting to even the tightest of building sites, we have a wide range of vehicles, each with different capabilities in terms of weight, capacity and accessibility. Please advise us of any special access requirements when ordering. Our driver can call you prior to their delivery drop, and you can reiterate any specific delivery access requirements.

Delivery cost

Delivery is £18.00 on all orders (£15.00 +VAT.)

Where we deliver

We deliver all around the South West of England. To check if your postcode falls out of our delivery area, please enter your postcode at the checkout. Concrete deliveries from the Stonehouse branch have their own delivery structure based on distance from the Concrete Plant. Please contact the branch directly for an exact cost.

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