Melbourne insulation prices, updated October 2026

Insulation Cost in Melbourne

Insulation removal in Melbourne typically costs $15–$30 per m² of ceiling, and new Knauf Earthwool® batts typically cost $15–$30 per m² installed. Removing old insulation and installing new batts together typically costs $30–$60 per m². Prices are indicative and confirmed in writing after a free on-site assessment by our Ravenhall team.

Currently accepting bookings.

On-Site

Tile Roof Retrofit

Extraction & Batts

1. Old blown-in removal via vacuum

2. Earthwool® batts install

ISO 9001 • 45001 • 14001

EEC Certified

Earthwool® ECOSE

50-Year Warranty

1,500+ reviews

Get your free quote

This secure form sends your enquiry to our technical team, and we'll be in contact with you shortly.

Updated 27 October 2026

What the price includes

Our Melbourne prices are quoted per square metre of ceiling and include:

Removal
Vacuum extraction of the old insulation, dust and debris from the roof space through hoses into a sealed truck, and disposal.
New batts
Supply and installation of Knauf Earthwool® glasswool batts fitted between the ceiling joists, with clearances kept around downlights and flues.
Assessment
A free on-site assessment first, and a written quote before any work starts.

Clean roof cavity after old insulation has been professionally removed

What changes the price

Every roof is measured and inspected before we quote. These are the things that move a job up or down the range:

Roof size

Prices are per square metre of ceiling, so the area to be done is the biggest factor.

Roof pitch and access

A low-pitched roof or a small manhole means slower, more careful work in a tight space, which sits at the top of the range. A high roof with good access sits towards the bottom.

What is in the roof

Heavy droppings, nesting material, old loose-fill or several layers of old batts take longer to vacuum out than a single layer of tired batts.

The R-value you choose

Higher R-value batts are thicker and cost more to supply. We recommend an R-value for your home at the assessment.

Melbourne homes

Melbourne has many weatherboard homes, Victorian and Edwardian terraces and post-war brick veneers. Older roofs often have very little or badly settled insulation, and terraces can have tight roof spaces that take longer to work in. Melbourne's colder winters make ceiling insulation work harder here than in warmer cities.

What R-value do Melbourne homes need?

Most of Melbourne is in climate zone 6 under the National Construction Code. You can check your address on the ABCB climate zone map, linked under Sources below.

For a new home built to the NCC 2022 deemed-to-satisfy provisions in climate zone 6, the minimum ceiling insulation for a pitched roof with a flat ceiling is R3.0 to R4.0, depending on the roof colour, whether the roof space is ventilated and whether there is insulation or reflective foil under the roof (ABCB Housing Provisions, Table 13.2.3g).

Upgrading the insulation in an existing home doesn't have to meet the new-home minimums, but they are a sensible starting point. We recommend an R-value for your roof at the free assessment.

Earthwool batts installed between ceiling joists

Getting an exact price

Book a free on-site assessment and we'll measure the roof, check what's in it and give you a written quote. Call (03) 7009 1718, Monday to Friday, 7:30am–4pm, or use the quote form on this page.

Before and after comparison of a roof space cleared of old insulation

Typical prices in Melbourne

Old insulation removal: typically $15–$30 per m²Covers vacuum extraction of old insulation, dust and debris from the roof space, and disposal.
New batts installed: typically $15–$30 per m²Covers supply and installation of new Knauf Earthwool® batts, depending on R-value, roof size and pitch.

Indicative only. Your price is confirmed in writing after a free on-site assessment. Prices are the same in Perth, Melbourne, Sydney and Brisbane. Updated October 2026.

Worked examples for Melbourne homes

Removal at $15–$30 per m², new batts at $15–$30 per m², or both together at $30–$60 per m². Ceiling areas are examples; we measure your roof at the free assessment.

Typical insulation costs for two example ceiling sizes
Home	Old insulation removed	New batts installed	Removal and new batts
Smaller three-bedroom homeabout 120 m² of ceiling	$1,800–$3,600	$1,800–$3,600	$3,600–$7,200
Larger four-bedroom homeabout 180 m² of ceiling	$2,700–$5,400	$2,700–$5,400	$5,400–$10,800

Indicative only. Your price is confirmed in writing after a free on-site assessment.

Cost guides by city

Sources

Frequently Asked Questions

How much does insulation removal cost in Melbourne?

Old insulation removal in Melbourne typically costs $15–$30 per m² of ceiling, about $1,800–$3,600 for a 120 m² ceiling. Your price is confirmed in writing after a free on-site assessment.

How much does it cost to insulate a ceiling in Melbourne?

New Knauf Earthwool® ceiling batts typically cost $15–$30 per m² installed, depending on the R-value, roof size and pitch. If the old insulation has to come out first, removal and new batts together typically cost $30–$60 per m².

What R-value ceiling insulation suits Melbourne?

Most of Melbourne is in climate zone 6, where new homes built to the NCC 2022 deemed-to-satisfy provisions need R3.0 to R4.0 ceiling insulation for a pitched roof with a flat ceiling. Existing homes don't have to meet that, but it is a sensible floor for Melbourne winters.

Is it worth replacing old insulation in a Melbourne weatherboard house?

Often, yes. Older weatherboard homes commonly have thin or settled ceiling insulation. We check what is there at the free assessment and tell you whether a top-up is enough or whether the old insulation should come out first.

Where are you based in Melbourne?

Our Melbourne depot is at 7/11 Rockfield Way, Ravenhall VIC 3023. Call (03) 7009 1718, Monday to Friday, 7:30am–4pm. Site visits are by appointment.