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Man wearing a face mask and gloves (PPE) rolls out an insulation batt
Insulate your walls, floors and ceilings with Earthwool® insulation to protect your home from outside cold and heat.

Comfort all year round

Insulation works wonders at shielding our homes from winter’s frigid bite, but did you know it’s just as effective against the scorching heat of summer? When it comes to battling the elements, insulation is a major tool in your arsenal, keeping your home comfortable when the outdoors is anything but.

How to heatproof your home

Good quality insulation, like Earthwool®, helps your home retain an even temperature, working as a barrier against the heat of summer as well as sealing it against winter chills. Think of it as being like a force field around your home, keeping you comfortable within, even when the mercury rises.

Earthwool® insulation can also save you money, significantly cutting the amount of energy you pour into running both heating and cooling appliances.  

Choosing the right insulation

Choosing the right insulation might seem bewildering, but it’s really very simple; every package of bulk insulation is clearly labelled with an R value, which indicates the thermal resistance of the insulation – essentially, the higher the R value the better!
Those in warmer climates might find a lower R value is perfectly adequate to keep their home warm in winter, but there’s no harm in sizing up, so to speak.

Earthwool® makes life even easier by colour-coding their packs of insulation; green is for ceilings, black for underfloor, and blue is for walls – great for temperature regulation but also for acoustics, an absolute boon if you’ve got bedrooms bordering living spaces. Plus, Earthwool® is backed by a 50 year warranty, so you can be extra confident in your selection.

Man wearing face mask and gloves (PPE) is standing on ladder to install ceiling insulation

Insulation installation

If your home insulation is looking shabby or, as with many older homes, is actually non-existent, retrofitting insulation is often a straightforward D.I.Y. job. If you have access to the roof space or the subfloor, or the walls if it’s a new build or extension, putting in Earthwool® insulation is as easy as cutting to fit and pressing into place; just follow the directions.

Plus, Earthwool® is made using recycled glass and ECOSE® Technology, a sustainable plant-based binder that contains no added formaldehyde, so you can handle it with confidence.

Refresh your ceiling insulation

Do it yourself using our step-by-step guide to insulate your ceiling.


Suggested products

More D.I.Y. Advice

Health & Safety

Asbestos, lead-based paints and copper chromium arsenic (CCA) treated timber are health hazards you need to look out for when renovating older homes. These substances can easily be disturbed when renovating and exposure to them can cause a range of life-threatening diseases and conditions including cancer. 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 or visit our Health & Safety page.

When following our advice in our D.I.Y. videos, make sure you use all equipment, including PPE, safely by following the manufacturer’s instructions. Check that the equipment is suitable for the task and that PPE fits properly. If you are unsure, hire an expert to do the job or talk to a Bunnings Team Member.