5 Best Insulation Services in Sydney (2026)

Independently ranked by our review of ratings, reviews and reputation · How we chose

By Brad Smith, Home Services Expert · ✓ Data verified August 2026 · 8 min read

Old insulation in a Sydney roof cavity is often decades old, contaminated with debris, and doing little to keep the house cool in summer or warm in winter, and the businesses below specialize in fixing exactly that. Between them these companies have logged over 1,000 Google reviews, and every one sits at 4.9 stars or better.

Short answer: Insulvac Insulation & Vacuuming and Rapid Insulation Sydney both hold a perfect 5.0-star rating, with Insulvac backed by 304 reviews against Rapid's 94. Active Vac & Insulation is the most-reviewed at 4.9 stars across 378 reviews. Pricing is quoted per job based on roof size and insulation type, though DIY underfloor rolls are available for purchase online from one supplier here.

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1. Active Vac & Insulatio…
2. Insulvac Insulation &…
3. Pricewise Insulation
4. Rapid Insulation Sydne…
5. Sydney Insulation
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Sydney's Top Insulation Installers Compared

#	Business	Rating	Reviews	Best for
1	Active Vac & Insulation	4.9 ★	378	Roof vacuuming & insulation removal	View ›
2	Insulvac Insulation & Vacuuming	5.0 ★	304	Established roof cavity specialists	View ›
3	Pricewise Insulation	4.9 ★	129	DIY insulation supplies	View ›
4	Rapid Insulation Sydney	5.0 ★	94	Family-run installation team	View ›
5	Sydney Insulation	4.9 ★	97	Wall & underfloor insulation	View ›

5 Best Insulation Services in Sydney (2026)

Our top picks, reviewed

#1 Overall🕑 Open 5 days/wk↩ Responds to reviews

Active Vac & Insulation

4.9378 Google reviews

Active Vac & Insulation is a Hills District Sydney company offering roof space vacuuming, ventilation, and both residential and commercial insulation removal and installation. Founded by husband and wife team Rod and Shelley Maxwell, it uses HEPA-filtered vacuum equipment to clear old debris, dust, and insulation before installing new material.

What people praise

HEPA vacuuming thoroughly clears decades of dust and debris before new insulation goes in
Before-and-after photos provided so customers can see the completed work
Team praised for not rushing jobs even in hot conditions
Free extras offered, like exhaust fan flaps to help with allergies

Reputation scorecardrank in Sydney

Rating4.9 / 5

Review volume378 · 97th

Confidencehigh

Recency5 months ago

Info completenesssite · phone · hours

Rating breakdown95% 5-star

✓ VerifiedSource: Google

Our take: The most-reviewed insulation company on this page, and its combination of vacuum cleaning and reinstallation makes it a strong choice for older homes with contaminated or deteriorated existing insulation.

Website +611300244822 Directions

26 Brookhollow Ave, Baulkham Hills NSW 2153

#2🕑 Open 5 days/wk↩ Responds to reviews

Insulvac Insulation & Vacuuming

5.0304 Google reviews

Insulvac Insulation & Vacuuming is a Leichhardt-based company established in 1997, specializing in attic and roof cavity vacuuming, toxic dust extraction, and installation of new acoustic and thermal insulation for residential, commercial, and industrial properties across Sydney. It works alongside builders, pest controllers, and other trades on referral.

What people praise

Nearly three decades of operating history in Sydney
Before-and-after photos provided as standard on jobs
Reviewers describe minimal disruption despite large volumes of old material removed
Staff named individually and repeatedly for professionalism and communication

Reputation scorecardrank in Sydney

Rating5 / 5

Review volume304 · 92nd

Confidencehigh

Recency5 weeks ago

Info completenesssite · phone · hours

Rating breakdown99% 5-star

✓ VerifiedSource: Google

Our take: The highest-rated established option on this page, and its near-30-year track record makes it a dependable choice for larger or more complex removal jobs.

Website +61295183744 Directions

Unit 3/71/73 Lords Rd, Leichhardt NSW 2040

#3🕑 Open 5 days/wk↩ Responds to reviews

Pricewise Insulation

4.9129 Google reviews

Pricewise Insulation is an Ingleburn-based insulation supplier selling wall, ceiling, and underfloor insulation products online for both DIY installation and professional installers, stocking major brands including Knauf Earthwool, Bradford, and Kingspan. It offers next-day delivery across Sydney and same-day delivery in some cases.

What people praise

Wide range of major insulation brands available to buy directly
Fast delivery, with next-day standard and same-day available on request
Customer service quickly corrected an order error, according to one reviewer
DIY-friendly products like Polyfloor praised for being easy to install and tear to size

Reputation scorecardrank in Sydney

Rating4.9 / 5

Review volume129 · 86th

Confidencemoderate

Recency6 weeks ago

Info completenesssite · phone · hours

Rating breakdown95% 5-star

✓ VerifiedSource: Google

Our take: The clear choice here if you want to install insulation yourself rather than hire a crew, with a wide product range and fast delivery backing up the DIY option.

Website +61285994562 Directions

37 Broadhurst Rd, Ingleburn NSW 2565

#4🕑 Open 6 days/wk

Rapid Insulation Sydney

5.094 Google reviews

Rapid Insulation Sydney is a Dural-based family business offering insulation removal, replacement, and underfloor installation across Sydney, run by Aren with a dedicated team of installers. It handles both straightforward replacement jobs and more difficult installs, including low-pitch roofs other companies have declined.

What people praise

Took on a low-roof-pitch job that several competitors refused
Work quality independently confirmed by an unrelated roofer during later, unrelated work
Before-and-after photos provided with every job
Team described repeatedly as fast, courteous, and thorough

Reputation scorecardrank in Sydney

Rating5 / 5

Review volume94 · 69th

Confidencemoderate

Recency6 months ago

Info completenesssite · phone · hours

Rating breakdown99% 5-star

✓ VerifiedSource: Google

Our take: Shares the highest rating on this page, and its willingness to take on difficult jobs other companies turned down makes it worth calling for tricky roof configurations.

Website +61461531153 Directions

Unit A6/276-278 New Line Rd, Dural NSW 2158

#5🕑 Open 5 days/wk

Sydney Insulation

4.997 Google reviews

Sydney Insulation is a Prestons-based company with over a decade of team experience, offering insulation removal, ceiling vacuuming, ceiling and blow-in insulation, and both wall and underfloor insulation across Sydney. It has worked with over 16,000 homeowners and handles retrofit jobs on older weatherboard homes.

What people praise

Handles wall insulation retrofits on older weatherboard homes, a specialty not every competitor offers
Staff explain insulation performance and safety clearly before starting work
Independent confirmation of insulation quality noted by at least one customer's separate tradesperson
Clear before-and-after photos provided during the job

Worth knowing

One reviewer had an issue with the filler product used to patch drilled holes for wall insulation, which failed shortly after completion

Reputation scorecardrank in Sydney

Rating4.9 / 5

Review volume97 · 78th

Confidencemoderate

Recency5 weeks ago

Info completenesssite · phone · hours

Rating breakdown96% 5-star

✓ VerifiedSource: Google

Our take: A strong choice for wall insulation retrofits specifically, though if you're getting exterior wall drilling done, ask up front what filler product will be used to patch the holes.

Website +61272331266 Directions

Unit 4/1 Powdrill Rd, Prestons NSW 2170

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How we score

Every number on this page is computed from public Google data on the date shown, not from opinion or payment. Rating is the business’s live Google star average. Review volume is how many customers have rated them, ranked against other Sydney insulation companies. Confidence weighs the rating by that volume, so a 4.9 from hundreds of reviews carries more weight than a 5.0 from a smaller sample. Recency reflects how recently customers are still leaving reviews. No business can pay to change these numbers.

How much does insulation cost in Sydney? (2026)

Insulation pricing in Sydney depends on roof size, insulation type, and whether removal of old material is needed, and most installers on this page quote per job after an inspection. If you’re installing it yourself, one supplier sells insulation directly online with published product pricing.

Serving all of Sydney

These companies cover the Hills District, Leichhardt, Ingleburn, Dural, and Prestons, spanning most of greater Sydney. Searching for insulation services near me? Every listing below shows a live phone number so you can request a free quote for your specific property.

What to ask before you hire an insulation installer

Does the quote include removal and vacuuming of old insulation, or just new installation?
What R-value batts or material will be used, and is it suited to my roof type?
Will you provide before-and-after photos of the job?
How long will the job take, and how many people will be on site?
If drilling is required for wall insulation, what product will patch the holes?
Is there a warranty on the installation work?

Frequently asked questions

How did you choose these insulation services?

We started from insulation companies in Sydney with a public Google presence, then ranked by rating, review volume, consistency, and recency. See How we score above.

Are these rankings paid?

No. Rankings come from the public Google data in the scorecard. A business can pay to be a Featured Partner, which adds a badge and top placement, but that never changes another business’s score or position on the underlying data.

How often is this updated?

The data carries a verified date (August 2026 on this page). We refresh listings periodically so ratings and review counts stay current.

Can I buy insulation and install it myself?

Yes, Pricewise Insulation sells insulation products directly online for DIY installation, alongside offering professional installers if you’d prefer a crew to do the work.

Do these companies handle wall insulation, not just ceiling?

Sydney Insulation and Pricewise both explicitly offer wall insulation, including retrofits on older weatherboard homes, in addition to ceiling and underfloor work.

The bottom line

Active Vac & Insulation is the safest default thanks to its deep review base and combined vacuum-and-install approach, while Insulvac and Rapid Insulation share the top rating for anyone wanting a proven, family-run team. Ask for before-and-after photos and confirm the material used before the crew arrives.

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