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Factorylite is an effective commercial and industrial roofing insulation. It is manufactured from high quality, non-combustible, flexible Glasswool.

With the addition of an inert binder, the product is lightweight, safe and resilient. Factorylite is faced on one side with either a reinforced foil or white metalised foil.


  • compression packed – to reduce volume and optimise transport and storage
  • significantly reduces heat loss/gain
  • suitable for high humidity applications
  • made to size to reduce wastage
  • long product life - will not readily age
  • lifelong energy savings
  • helps to prevent condensation
  • maintenance free


  • over purlin installation (new buildings)
  • between purlin installation (existing buildings)


Thickness (mm)Density (m³)Width (m)*Lengths (m)R-Value (m².K/W)
50mm11 kg/m³1.2m5m to 30m1.25
75mm11 kg/m³1.2m5m to 20m1.92
100mm11 kg/m³1.2m5m to 15m2.56
135mm11 kg/m³1.2m5m to 10m3.46

*Please note some lengths may only be available on special request. Contact us for availability.