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Keep your home cool this summer with energy-efficient insulation.


Planning for the future

Stay cool this summer (and warm in the winter) while keeping your costs to a minimum, thanks to energy-efficient Earthwool® glasswool insulation.

Earthwool® glasswool insulation should be an essential part of your plans, whether you’re building a home or renovating one. If you’re building a new home or planning an extension, you’ll need to meet updated requirements from the Ministry of Business, Innovation and Employment (MBIE) for energy efficiency. The new range of Earthwool® glasswool insulation batts makes it incredibly simple for both tradies and D.I.Y. enthusiasts to comply with the changes to the H1 Building Code. The updates become mandatory in May 2023, so get ahead of the game and start saving energy now.

Earthwool® glasswool is manufactured using up to 80 percent recycled glass and is backed by a 50-year warranty.

Above and beyond

Install a single-layer solution in your ceiling that meets the new H1 Building Code requirement for thermal efficiency (listed as an R-value) of R6.6 for ceilings in all climate zones. The new R7.0 Earthwool® glasswool ceiling batt is quicker – and less hassle – to install than two layers of insulation. If you’ve reclaimed the loft as a living space, you’ll need to insulate between the rafters. The new Earthwool® glasswool skillion batt has an exceptionally efficient R7.4 rating and is designed specifically for this purpose.

The framework of a house being built with exposed wooden rafters.

Calm and collected

With Earthwool® glasswool wall batts nestling between the studs of a timber-framed home, you’ll be enveloped in acoustic insulation as well as R4.4 thermal efficiency.

Earthwool® insulation batts installed onto the wooden rafters of the ceiling of a house frame

From the ground up

Enjoy fuss-free compliance with updated requirements when you install R2.6 Earthwool® glasswool Floorshield batts. They are made with a wind-wash barrier to prevent air movement under the house from reducing their thermal performance; they also have DriTherm® Technology for extra moisture resistance.

Keep in mind...

  • Safety tip: Always wear the appropriate safety equipment (safety glasses, gloves, ear muffs and a mask, for example) and always follow the instructions for the product or equipment.
  • Products available from 2023.
  • Some products may not be available at all Bunnings stores, but may be ordered.

For more energy-efficient insulation...

Check out the rest of our Earthwool® range.


Photo Credit: Studio Romantic_Shutterstock, SkyLynx_Shutterstock, Earthwool®

Health & Safety

Please make sure you use all equipment appropriately and safely when following the advice in these D.I.Y. videos. You need to be familiar with how to use equipment safely and follow the instructions that came with the equipment. If you are unsure, you may feel it is safest to consult an expert, such as the manufacturer or an expert Bunnings Team Member.

Grave health hazards are linked to asbestos, which may be in homes built up to 1990. Health hazards may result from exposure to lead-based paints in older materials and copper chromium arsenic (CCA) treated timber. For information on the dangers of asbestos, lead-based paint and CCA treated timber and tips for dealing with these materials contact your local council's Environmental Health Officer. You can also use a simple test kit from Bunnings to indicate the presence of lead-based paint.