• CTF - Ultra Tapered

CTF Ultra ® SAS Tapered

CTF Ultra ® SAS Tapered is a ‘hybrid’ system comprising of tapered EPS and uniform thickness CTF Ultra (foil encapsulated) used in warm roof applications to create suitable falls under any compatible membrane in a mechanically fixed system. CTF Ultra is the best performing insulation material available with a thermal value of 0.014 W/mK. Providing excellent thermal performance and any required fall, the use of CTF Ultra minimises the depth of insulation for areas of restricted height such as door thresholds.

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