Polymax R2.5 | Polyester Underfloor Insulation | How To

ecoMaster have made it easy for you to insulate your own wooden floors with the safest and most effective Polymax underfloor insulation.

What you will need: 

  • Stapler (Electric or Cordless, Double Insulated - not a hand stapler)
  • Staples (Galvanised)
  • LED Headlamp or Work Light
  • Gloves (Garden)
  • Goggles
  • Tarps (Helps keep insulation clean)
  • Lead/Extension Cord (if using an electric stapler)
  • Clothes that can get dirty
  • An installation buddy


Insulating a Web Truss Floor can be tricky, so we have a "How To" video to make it easy:  

 Pro Tips:

  • Open the packs promptly to allow the insulation to reloft before installing.
  • We recommend stapling the material to the lower edge of the floor joists at 100mm intervals to ensure it is secure and will not sag over time.
  • Fit the insulation ensuring that the upper surface is in direct and flat contact with the floor. Excessive bunching up of the insulation creates voids which encourages vermin access.
  • Where the joist spacing is not amenable to straight going, use the turn and tear method to ensure continuous contact with the floor to exclude rodents. Neatness counts!
  • For the greatest long lasting result, make sure the insulation staples that are used are galvanised staples.

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