CTF-09: Stone Wool/Cement Board

CTF-09 is a hybrid system consisting of a tapered/ flat CTF-05 (stone wool) board with a flat CTF-FS1 (cement) board overlay, used in warm roof applications to create drainage falls (from 1:240 – 1:40) under any fully bonded suitable waterproofing system. The product’s robust environmental credentials, high compressive strength overlay board and dimensional stability make this product ideal in a variety of applications.




  • A1 non-combustible
  • High acoustic performance
  • Very high compressive strength (*load spreading)
  • Unlimited tapered falls
Technical Data


CTF-05 Tapered/Flat
Reaction to fire A1 EN 13501-1
Thermal conductivity @10%c 0.039W/m²K EN 12667
R-value @10%c 2.9m²k/W EN 12667
Density +/-10% 160-200kg/m³ EN 1602
Compressive @10% deformation 60kpa-80kpa EN 826
Behaviour Under point load 500N EN 12430
Tensile Perpendicular to face 10kpa EN 1607
Length 600mm-1200mm +/-2% EN 822
Width 1000mm-1800mm +/- 1.5% EN 822
Thickness 30mm-120mm -3%-+5% EN 8223
Vapour transmission MU1 EN 12086
Water absorption 1gm/m² max NPD EN 1609
CTF-FS1 Flat
Reaction to fire Euroclass rating A1 EN 13501
Thermal conductivity 6-10mm 0.244W/m²K EN 12667
Density @10%c 1300kg/m³ EN 12667
Vapour permeability Pass EN 12667
General board size 1200mm 600mm EN 13165
1200mm 2400mm EN 13165
Board thickness 6mm-10mm EN 13165
Heat resistance Pass EN 12467
Water absorption <35% EN 12467
Freeze / thaw resistance Pass EN 12467


  • Warm roofs
  • Mechanically fixed or fully bonded


3rd Party Accreditation