Northcote
“Genuinely the most professional trade we've used in 12 years of owning homes. Written quote, fixed price, photos of every stage, full clean-up. Would recommend to anyone.”
Marcus Papadopoulos
Google review
External wall insulation
About 24% of heat loss is through the walls.
- 4.9 Google rating
- 2,400+ homes
- 50-year warranty
- In-house crews
Is this your house?
Walls can only be insulated while the cavity is open. These are the moments it pays to do it.
- 01
Recladding, renovating or extending
The only time a wall cavity is open. Batts going in before plaster cost a fraction of what the same wall costs to open up later.
- 02
Walls cold to the touch
An uninsulated 90 mm stud wall is close to outside temperature by morning. About 24% of a home's heat loss goes through the walls.
- 03
Noise from the street or next door
High-density wall batts cut airborne sound as well as heat. Interior walls between bedrooms and living areas can be done in the same trip.
- 04
Ceiling done, floor done, still cooling fast
Ceiling and floor are about 60% of heat loss between them. Walls are the next 24%, and the last big layer in the envelope.
What goes in
High-density Earthwool, friction fit, every penetration sealed.
Wall batts stand up in a vertical cavity for 50 years only if they are the right density and the right width. Both are specified before they arrive on site.
- Knauf Earthwool wall batts, high density
What that means on the day
- Stud spacing and cavity depth checked before batts are ordered, so nothing is forced in.
- Batts cut to each stud bay, including the short bays above windows and below sills.
- Pipes, cables and power points cut around and sealed, not left as cold gaps.
- Sign-off photos of every wall before the plasterer arrives.
How it works
Scheduled to your frame, done before plaster. Five steps.
We coordinate with your builder or plasterer so the batts go in on the one day the walls are open.
- 1Step 01
Drawings and quote
Wall area taken off your drawings, per m². A written quote within 1 business day, fixed before the day.
- 2Step 02
Schedule
Date set with your builder or plasterer for after rough-in and frame sign-off, before plaster.
- 3Step 03
Check
Stud spacing and cavity depth confirmed on site before the batts arrive, so the right width turns up.
- 4Step 04
Install
Earthwool wall batts friction fit into every stud bay, no sag, no compression, service penetrations sealed.
- 5Step 05
Sign-off
Photos of every wall before plaster goes up, plus the 50-year manufacturer and 2-year workmanship warranties.
Quoted per m² from your drawings, fixed in writing.
Wall jobs vary with stud size, wall area and how much of the house is open. The quote lists each wall and its R-value, within 1 business day.
- Knauf Earthwool HD wall batts supplied and installed
- Stud spacing and cavity depth checked before ordering
- Service penetrations sealed
- Scheduling with your builder or plasterer
- Sign-off photos of every wall before plaster
- 50-year manufacturer warranty, 2-year workmanship warranty
Send the plans and we take off the wall area. Internal walls for sound and ceiling or underfloor batts can go on the same quote.
About the VEU rebate
The VEU rebate applies to ceiling insulation only.
Victorian Energy Upgrades activity 48 covers ceiling insulation in existing homes. It does not cover this service. If your ceiling also needs work, that line of the quote may qualify and the rebate comes off it before you pay.
Proof
What an open wall looks like when we leave.
Every stud bay filled, every penetration sealed, photographed before the plaster hides it.
2,400+
01Homes insulated
Since 2019, every one by our own employed crews.
4.9
02Google rating
From 100+ reviews.
50 yr
03Manufacturer warranty
Knauf Earthwool, plus 2 years on our workmanship.
2019
04Founded in Melbourne
Insulation specialists, long before any rebate.
What homeowners say after the install
Why Pro vs the rest
Plaster covers everything. Only the install decides what is behind it.
Wall insulation cannot be inspected once the plasterer has been. These are the differences to ask about before the walls close.
TopicThe usual wall installPro Insulation
TimingTurn up when the plasterer is already bookedScheduled to frame sign-off, same day, confirmed with your builder
FitBatts stuffed in, compressed at the nogginsFriction fit, cut to each stud bay, no compression
PenetrationsPipes and cables left as gapsEvery service penetration sealed
ProductWhatever is cheapest to buy that monthKnauf Earthwool HD, every job
Hand-overPlaster goes up, nobody looksSign-off photos of every wall before plaster
WarrantyFingers pointed at the subbie50-year manufacturer, 2-year workmanship, handled by us
Comparison reflects common practice. Ask any installer for photos of the walls before plaster.
Questions
The questions we get asked most.
Straight answers. If you would rather talk to a person, call 1800 960 650 six days a week.
Not with batts. Batts need an open cavity, so wall insulation happens during a reclad, renovation, extension or new build. If your walls are closed, start with the ceiling and floor, which are about 60% of heat loss between them.
Other services
Also from the same crews.
Every service, one written quote, one warranty.
- Knauf Earthwool
- In-house crews
- 50-year warranty
- Accredited VEU provider
- Engineer-led
- ICANZ compliant
- Written quote in 1 business day
60-second check
60 seconds on your phone. A written quote in 1 business day.
Three short steps. You see whether your home is likely to qualify before we ask for any contact details, and nobody needs to visit to quote.