• CTF-11

CTF-11 – Stone Wool/PIR Tissue Faced

CTF-11 is a ‘hybrid’ system comprising of tapered mineral glass faced PIR and uniform thickness stone wool underlay, used in warm roof applications to create suitable falls under any compatible bituminous or single ply membrane system. Providing superb acoustic/thermal performance and the required fall, the system can be fully bonded or mechanically fixed with thermally broken fasteners.

Download Technical Data Sheet (PDF)
SKU: CTF-11 Category:


  • CFC, HFC and HCFC-free
  • Ozone Depletion Potential of zero
  • Global Warming Potential <5
  • BREAM A rating (system dependant)
  • 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

PIR (mineral glass face) – 0.024-0.027 W/mK
Stonewool 0.039 W/mK

Compressive Strength

PIR (mineral glass face) 150 kPa @ 10% compression

Board Size

PIR – 1200 x 1200mm
Stonewool – 1200 x 1000mm


Designed to achieve the required U value


Mechanically fixed with thermally broken fasteners
Fully bonded with non-solvent PU adhesive