• CTF - Ultra

CTF Ultra ® SAS

CTF Ultra ® SAS is a ‘hybrid’ system comprising of flat layers of EPS and CTF Ultra (foil encapsulated) used in warm roof applications under any compatible membrane in a mechanically fixed system. Robust and requires no special handling or storage. CTF Ultra ® SAS is the best performing insulation material available with a thermal value of 0.014 W/mK. Providing excellent thermal performance, the use of CTF Ultra ® SAS minimises the depth of insulation for areas of restricted height such as door thresholds.

Download Technical Data Sheet (PDF)
SKU: CTF Ultra ® SAS Category:


  • CFC, HFC and HCFC-free
  • Ozone Depletion Potential of zero
  • Global Warming Potential <5
  • BRE Green Guide A generic rating (EPS – only)
  • Easy handling and installation

U Values

Each scheme is individually designed to achieve the required U value. Contact our technical department for further information.


Must be installed in accordance with manufacturer’s recommendations. Contact our technical department for further information and compatibility.

Thermal Conductivity

EPS – 0.033 – 0.035 W/mK
CTF Ultra 0.014 W/mK

Compressive Strength

EPS200 200 kPa @ 10% compression

Board Size

EPS – 1200 x 600mm others available to reduce waste


Designed to achieve the required U value


Mechanically fixed with thermally broken fasteners