Spray Foam Insulation

Duratherm ® OS

Roof treated with Duratherm Spray Foam Insulation


Duratherm ® OS is our KIWA approved and LABC accredited  spray foam product. Suitable for insulation purposes in a variety of different properties and structures, for roof stabilisation, to reduce air leakage and to overcome issues with slipping tiles and nail fatigue. 



Benefits or Uses

Duratherm® OS is used for:

  • Retrofit insulation / stabilisation for pitched / flat roofs
  • New build insulation
  • Loft conversions
  • Commercial buildings
  • Ocean going yachts / canal barges

Duratherm® OS can be used to upgrade the thermal performance of roofs, floors or walls of any property, to meet current building regulations. 

Technical Data

Duratherm® OS is an HCFC and 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 35kg/m3, with exceptionally good compressive strength.

Service Temp range -15oC to 70oC.

When tested to BS476 part 7 the foam achieves a Class 1 surface spread of flame

Request Technical data sheet



Thermal Insulation

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


Case Studies

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

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


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