CTF-FS2: Magnesium Oxide (MgO) Board

CTF-FS2 is a non-combustible, magnesium oxide (MgO) board, used as an overlay to other CTF insulation systems in warm and inverted roof applications to provide an extremely robust, load bearing surface for fully bonded, mechanically fixed and ballasted waterproofing systems.




  • A1 non-combustible
  • Very high compressive strength 
  • Standard stock item available 


Technical Data


Reaction to fire Euroclass rating A1 EN 13501
Thermal conductivity @10%c 0.19W/m²K EN 12667
Density 1100kg/m³ EN 12467
Vapour resistance 0.31MNs/g EN 12572
General board size 1200mm 600mm EN 13165
1200mm 2400mm EN 13165
Board thickness 6mm-10mm EN 13165
Solubility Insoluble in water EN 12467
Freeze / thaw resistance Pass EN 12467


  • Warm roofs (including green, blue & brown) 
  • Inverted roofs (including green, blue & brown) 
  • Mechanically fixed and fully bonded