Ceiling and roof insulation
The cheapest change you can make to how a house holds temperature, and the one most homes are still short on.
Insulation and draught proofing
Stop wasting money trying to heat or cool a house that leaks energy. Upgrading your insulation and sealing draughts is usually the highest-impact step you can take before investing in new climate systems or solar panels.
A common sign
“My house is freezing in winter and boiling in summer.”
About Insulation and draught proofing
Keep heat exactly where you want it.
Insulation slows down heat transfer through your ceiling, walls, and floors. Draught proofing blocks cold air from whistling through gaps in doors, windows, and old vents. They are two distinct jobs – and most homes need both.
Because this work is hidden in your walls and roof, it’s easy to overlook. But doing it first means every later upgrade – like heating, cooling, or solar – has less work to do, so it can be smaller and cheaper to run.
Helps with
Rooms that leak heat and won’t hold temperature
Helps with
Freezing draughts and cold air pockets
Helps with
Skyrocketing heating and cooling bills
Do this first
Seal your home before buying a new heater or air conditioner. A well insulated home can often run a smaller, cheaper system.
Not sure where the problem is?
Unsure if you need insulation or draught sealing?
Look at how your home behaves. Your everyday discomforts will tell you what needs fixing first.
Help me work out where to start6 upgrades in this category
Choose the upgrade you need.
Not sure which one? Start with the problem you’re trying to solve, or find a specialist who can assess your home.
Ceiling insulation top up
Older batts settle and thin out. Adding a layer over what is there costs a fraction of a full install.
Wall insulation
Blown into the cavity of an existing wall without taking the room apart. Harder than a ceiling and worth more in a brick veneer.
Underfloor insulation
For a house on stumps with a cold floor in July. Fitted from below, so the floor coverings stay where they are.
Draught and weather sealing
Doors, windows, wall vents and the gaps around them. The cheapest work in the building and the fastest to feel.
Insulation removal and replacement
Old, damp, rodent damaged or non compliant material out first. Nothing new performs on top of it.
Not sure where to start?
Stop guessing, start saving: find your home’s energy score.
Don’t waste money on upgrades you don’t need. A professional home energy assessment shows where your house loses heat and power, so your budget goes where it makes the biggest difference.
Find an assessor near meInsulation and draught sealing installers
Find insulation and draught sealing installers near you.
A few of the 179 listed across Australia
Enviroflex
4.8 405 Google reviews
Ceiling and roof insulationWall insulationUnderfloor insulationInsulation removal and replacementCeiling insulation top up
Serves Bayswater and surrounding suburbs | Based in Bayswater
Draught Proofing Melbourne
5.0 18 Google reviews
Draught and weather sealing
Serves Southbank and surrounding suburbs | Based in Southbank
Insulation Extract
4.8 23 Google reviews
Ceiling and roof insulationCeiling insulation top upWall insulationUnderfloor insulationHome energy assessments and audits
Based in Ravenhall
Thermawood Retrofit Double Glazing
5.0 538 Google reviews
Draught and weather sealingRetrofit double glazing
Based in Thornbury
1 Stop Insulation
5.0 230 Google reviews
Ceiling and roof insulationWall insulationUnderfloor insulationInsulation removal and replacement
Serves all of VIC | Based in Tullamarine
Before you choose an installer
See our guides on insulation and draught proofing.
Related goal
Insulation is usually step one of a bigger job.
If your real goal is a warmer home, insulation may only be the first step. See the upgrades worth considering – and the order that can save you money.