Having the best insulation available is a great start to making your home more comfortable, however, the performance of your insulation also depends on how well it’s installed.

This page contains instructions on how to carry out an ecoMaster quality job when installing your underfloor insulation. This ensures you a neat job that’s carried out safely and delivers the best and longest-lasting outcome possible. Follow along with our video or the step-by-step instructions below!

We wish you a safe and successful installation experience and know you’ll enjoy the superior comfort of a properly insulated floor.

Here’s how we do it at ecoMaster …

Step-by-step installation instructions for underfloor insulation:

You will need:

  • Only use a double insulated stapler to protect from electrocution
  • Use galvanised staples with 8 to 10mm leg length
  • Good lighting
  • Snap blade knife
  • Tarps to drag insulation over (to keep the rolls clean)
  • Personal protective equipment:  Goggles (eye protection) and face mask

Instructions. How to install underfloor insulation the best way:

  1. Layout tarps under the floor, one area at a time.
  2. Setup good lighting and always work with at least one buddy.
  3. Insulation rolls are fitted between the floor joints up against the floor.
  4. Staple through the insulation by pinching the bottom edge to the joists and bearers.
  5. Do not staple through the middle of the roll.  This will reduce the efficiency of your insulation.
  6. Fix staples every 100mm to 150mm along the edge of the roll.
  7. Ensure no gaps are left unstapled as this will allow draughts to enter.
  8. Mark the path of electrial cables with spray paint so they can be easily located in future.


ecoMaster underfloor insulation under timber floor 01 SL recolor min EcoMaster

Underfloor Insulation Installed from Below

To achieve the best possible outcome, ecoMaster always recommend installing insulation from underneath a home. This ensures that the material is pushed up and held firmly against the floorboards offering the best possible insulation value and allowing you to staple the end of each roll into the floor, effectively blocking any rodent access points.

how to install underfloor insulation in the best possible way as a DIY

Underfloor Insulation Installed from Above

As a guide, ecoMaster require a minimum clearance of 40cm beneath a floor to be able to install underfloor insulation from below to ensure the best outcome. Where there is inadequate access beneath the home, it is possible to install the insulation from above. The same installation instructions apply when installing from above, but inverted as shown here.

For more information on improving the thermal comfort of your home, visit www.ecoMaster.com.au or check ecoMaster’s underfloor insulation range.