Spray Foam Insulation



THERMADEK is an HCFC & CFC FREE two component, 1:1 ratio, rigid foam system which when processed through suitable spray machinery ( Graco, Gusmer, Glas-Craft ) will produce a rigid foam of approximate density 40kg/m³ with exceptionally good compressive strength and a very smooth surface. The system complies with British Standard Numbers 5241 and 7021 for external roof insulation and weatherproofing.

We can also produce a Thermadek Winter Grade product to meet your needs which has exceptionally good adhesion to cold substrates. If you require this product please call us to discuss this further.

Benefits or Uses

The benefits of Thermadek:

  • Designed for external roof and storage tank insulation
  • Seamless insulation for complex roof structures
  • Effective high insulation values
  • Excellent adhesion quality to all types of surfaces
  • Fast track installation with no mechanical fixings
  • High compressive strength to withstand damage from foot traffic
  • Essential in reducing heating costs and carbon emissions

Technical Data

Physical Properties

THERMADEK is a two component, modified polyurethane rigid foam which, sprayed through suitable foam machinery, gives a product of nominal density 40 kg/m³.

Laboratory test results (typical):
Cream time 3 – 5 seconds
Tack free time 8 – 17 seconds
Rise time 20 – 28 seconds
Free rise density 33 – 37 kg/m3



Thermal Insulation

Isothane has a range of insulation products designed to meet your insulation needs in all types of buildings.


Case Studies

Digester Insulation

Client: United Utitlities Main Contractor: Galliford Costain Insulation Specialist: Isotech Problem: Rapid heat loss through the concrete digester roof was...


Thermadek Winter – Davyhulme WWTW

Client: Davyhulme WWTW Applicator: Sureseal Limited Problem: Insulation required to 8 tank tops, approximately 500m2 each, over a 3-year period...


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Newhouse Road,
Huncoat Industrial Estate,

General Enquiries

Tel: +44 (0)1254 872555Email: info@isothane.com

Sales Enquiries

Tel: +44 (0)1254 872555Email: sales@isothane.com

Technical Enquiries

Tel: +44 (0)1254 872555Email: technical@isothane.com

Prepolymers & Export Enquiries

Tel: +44 (0)1254 872555Email: international@isothane.com


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