Cost guide · Underfloor insulation · SE Queensland · 2026
Underfloor insulation cost in QLD, 2026: the real SE-QLD bands.
In SE Queensland (2026), installed polyester underfloor insulation runs about $28–$35 per square metre, and most whole jobs land in the $1,000–$2,000 range. Closed-cell spray foam is roughly $40–$60+ per square metre, two-to-four times the cost.
I’m Peter Johnson. I’ve been in thousands of SE-QLD subfloors over 40 years. Here’s what underfloor insulation actually costs, what moves the price, and why the cheapest quote can end up the dearest house to live in, every figure cited to a real source.
Comfort Zone insulation.team
Family-owned insulation manufacturer, making comfy homes since 1986
~$28–$35/m² installed
polyester · typical job $1k–$2k
Real reviews, real jobs
What our customers say
Genuine Google & hipages reviews from Comfort Zone customers across SE Queensland.
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Angela M.
SE Queensland
“The fact that I can't even tell it's 6 degrees outside when I wake up in the morning speaks for itself. Have wasted so much money attempting to heat and cool an uninsulated home. Worth every $.”
- Phipages
P Peter
Alstonvale, 2024
“Connected with Comfort Zone Insulation and would recommend them”
- J
Jessa B.
Brisbane
“It dropped about 4 degrees straight away, and we added another 3 with the second job. I appreciate Peter's honesty, and the team showed pictures before and after.”
- Nhipages
Nola M
Birtinya, 2024
“They were courteous and competent.”
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Iain V-B.
Brisbane
“Quick and polite service. Great follow-up advice and photos sent for our records. Above and beyond what we expected. Would highly recommend.”
- Jhipages
Jennifer's E
Upper Caboolture, 2024
“Excellent customer service. Highly recommended. Has a profound knowledge of insulation products and has the best interest of his customer.”
- G
Gerry S
Fitzgibbon, 2023
“I used Comfort Zone and they have a done an excellent job.”
- Jhipages
Jennifer
Upper Caboolture, 2024
“Excellent customer service. Highly recommend. Has a profound knowledge of insulation products and has the customer best interest.”
- J
Jung K
Riverhills, 2023
“An experienced family operation. Highly recommend. Thank you for the great job!”
- Dhipages
Diane A
Ormeau, 2024
“Peter and crew did a great job I would definitely recommend them”
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David H
Sunshine Coast, 2021
“Completed the job as quoted and to a high standard. Great personal service. Would highly recommend Comfort Zone for ceiling installation work.”
- Thipages
Timea
Highland Park, 2023
“I was extremely satisfied with the service they provided. They gave a very thourough explanation of the materials used, the way the work will be carried out and the price I had to pay was the exact amount quoted, no hidden costs included. They arrived on time, well prepared and workwas carried out exactly how they said it would be, they were super efficient, well prepared and were kind enough to even clean up after themselves. The services they provided was second to none! I don't hesitate to recommend them for any insulation job!”
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Benjamin H
Carseldine, 2019
“Very good explanation about their works. Advice of existing problems with the roof. Clean work. Very professional.”
- Mhipages
Mark
Pottsville, 2017
“Michelle, we are done - Peter from comfort zone insulation was very helpful. very honest with his recommendations - in fact he told me that the product my daughter had if installed correctly was superb. Thanks Peter you are a champion and i would recommend you to any person that was wanting professional advice and old school service.”
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Ian G
Burnside, 2019
“Good information, communication and professionalism.”
- Jhipages
Jessica
Pottsville, 2016
“This business offers a fantastic product that other businesses did not. Pump in ceiling insulation. Knowledge of the industry second to none.”
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Danny D
Boondall, 2018
“He explained everything he was going to do and the different types of insulation they used. He talked through the different options but made a recommendation for the one most people use, which is the one I chose. He was very understanding towards what I needed and not about himself.”
- Jhipages
Jack
Pottsville, 2023
“Excellent communication and informative. Professional.”
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Graham R
Riverhills, 2018
“Comfort Zone. Turned up ahead of time, completed in about 2 hours, cleaned up. All good. Very motivated installation team.”
- Thipages
Tony P
Redland Bay, 2023
“Very knowledgeable about insulation”
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Alex B
West Ipswich, 2018
“Fast, friendly, efficient.”
- Shipages
Steve
Redland Bay, 2017
“Excellent job and reasonable price.”
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Luke D
Mcdowall, 2017
“Peter did a good job. It was a quick and clean service. I'm happy to recommend!”
- Bhipages
Bruce H
Kuluin, 2023
“Prompt and efficient quoting.”
- B
Brendon
Brays Creek, 2016
“Peter supplied and installed roof insulation for me. He was very informative and provided good advice.”
- Ghipages
Gerry S
Fitzgibbon, 2023
“I used Comfort Zone and they have a done an excellent job.”
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Trevor G
Brookside Centre, 2016
“Excellent tradesmen from Comfort Zone Insulation. They were punctual and cleaned up after. Highly recommended.”
- Thipages
Tamara
Underwood, 2023
“Peter is honest, hard-working and came on time. Knew excally what he was talking about and answered my questions. Would 100% recommend”
- J
John G
Beaudesert, 2019
“Peter is an honest person who provided me with the information I wanted then performed a good job with great results for the benefit of myself and my family.”
- Shipages
Sterling G
Ashgrove, 2023
“Comfort Zone were very knowledge with great communication and follow up”
- Ghipages
Graham R
Riverhills, 2018
“Comfort Zone. Turned up ahead of time completed in +- 2 hours cleaned. All good. Very motivated installation team”
- Jhipages
Jung K
Riverhills, 2023
“An experienced family operation. Highly recommend. Thank you for the great job!”
- Khipages
Kathy A
North Lakes, 2023
“We connected with Peter through HiPages and he was prompt, professional and even came back after the job was complete to assist with a question we had. We would highly recommend Peter for further insulation works.”
- Dhipages
David H
Sunshine Coast, 2021
“Completed the job as quoted and to a high standard. Great personal service. Would highly recommend Comfort Zone for ceiling installationn work.”
- Shipages
Sue H
Sunshine Coast, 2021
“Incredible customer service”
- Ehipages
Eileen C
Cedar Vale, 2021
“Quality work, good customer service, prompt”
- Chipages
Craig M
Woody Point, 2021
“Called within 5 minutes of request. Very knowledgeable and explained job in great detail, provide great advice in prior preparation for works required. Very friendly and helpful.”
- Jhipages
Jenny C
Plainland, 2021
“Although I did not hire Peter I was impressed with the initial contact and the knowledge he was willing to impart. I was treated with respect which I appreciated. I would have hired but I received a lower quote.”
- Qhipages
Quinton
Coomera, 2020
“Professional installation without any short cuts. True to their word with high integrity. Response from Comfort Zone Insulation”
- Ghipages
Gary P
West Kempsey, 2020
“Came & Gave a free quote”
What underfloor insulation costs in 2026
The bands, in plain numbers.
For a raised timber floor in SE Queensland, installed polyester underfloor insulation runs about $28–$35 per square metre, and most whole jobs land in the $1,000–$2,000 range. Closed-cell spray foam is roughly $40–$60+ per square metre for the same job, and a good deal more on some price lists.
Those polyester and foam bands, and the typical $1,000–$2,000 whole-job figure, come from Pricewise Insulation’s underfloor cost guide. They’re a national insulation retailer, not a rival of mine, so it’s about as neutral a source as you’ll find. What I add is the local install reality: in SE-QLD subfloors the access and the condition under the house move the number around more than the area alone does.
The foam premium isn’t small, either. Brisbane Spray Foam, a foam installer, not me, publishes its own list at $70–$120 per square metre for closed-cell foam. So when I say foam costs two-to-four times what polyester does, that’s the foam industry’s own numbers talking, not a sales line from me.
SE-QLD bands · 2026
- Polyester, installed
- $28–$35/m²
- Closed-cell spray foam
- $40–$60+/m²
- Typical whole job
- $1,000–$2,000
Bands: Pricewise Insulation + Brisbane Spray Foam’s own list (2026). Your quote is fixed to your floor area, access and subfloor condition, not these averages.
Want the full poly-vs-foam picture, not just the price? Read spray foam vs polyester underfloor.
What moves the number
Four things change your underfloor price.
Two houses with the same floor area can land hundreds of dollars apart. Here's what actually moves the price, so you can read a quote and know what you're paying for.
Floor area, but you don't pay by area alone
The biggest single number is the square metres of floor you want done, and that's why a small cottage costs less than a sprawling Queenslander. But two houses with the same floor area can come in hundreds of dollars apart once access and subfloor condition are in the mix. As a working figure, installed polyester runs about $28–$35 per square metre, and most whole jobs land somewhere in the $1,000–$2,000 range.
Access: how easy it is to get under there
Underfloor work is paid for in awkwardness as much as area. A house up on tall stumps you can almost stand under is quick; a low-set on short stumps where the installer is dragging batts in on his belly through 500mm of crawlspace is slow, hot and hard, and it costs more per metre. Tight, damp, cramped subfloors with pipes and ducting in the way add time, and time is what you're really paying for.
Subfloor condition: what's already under your house
If the joists are sound, dry and clear, we staple polyester straight up and we're done. If there's old sagging insulation to pull out first, rubbish to clear, or signs of damp that need looking at before we close the floor up, that's extra work that shows in the price. It's worth knowing before you buy: a subfloor that's been wet is exactly the place you do NOT want to seal up with spray foam.
The product you choose
For SE-QLD subfloors we fit polyester. It's hydrophobic, won't waterlog, it's non-itch and it lifts back out if you ever need it. Closed-cell spray foam costs roughly $40–$60+ per square metre for the same job, sometimes a good deal more. You're paying two-to-four times as much for the option that can trap moisture against your timber and won't come back off once it's cured on.
The short version: floor area sets the ballpark, access and subfloor condition set the real price, and the product you pick sets the ceiling. For SE-QLD raised floors we fit polyester. Here’s the full case on the underfloor insulation page, and our ranking of the best underfloor insulation for SE QLD.
The trap
Why the cheapest underfloor quote can cost the most.
The cheapest quote is usually cheap because it skips the things you’ll never see from inside the house. A rushed job leaves gaps between the batts, and gaps quietly bleed away the performance you paid for. You bought an R-value. But with gaps you don’t get it. Underfloor work is hot, awkward, belly-in-the-dirt work, and that’s exactly where corners get cut.
The dearer mistake is the wrong product in the wrong place. A cheap closed-cell foam job (or a DIY foam kit) sprayed into a damp SE-QLD subfloor seals moisture against your floor timbers, where it can’t dry and can drive hidden rot. You can’t lift foam back out to check; getting it off means grinding it off the timber. A few hundred dollars saved up front can turn into a structural repair bill that dwarfs the whole insulation job.
The cheapest number on paper isn’t the cheapest house to live in.
Comfort Zone insulation.team
Family-owned insulation manufacturer, making comfy homes since 1986
The bit other quotes hide
Travel: I’ll show you, not hide it.
We cover a big stretch of South East Queensland and the home turf out west, and a job a long way from base carries a bit of road in the price. That’s diesel and hours behind the wheel. It’s a real cost, not a markup. Plenty of outfits bury it inside a higher per-metre rate so you can’t see it; I’d rather just tell you.
When I quote your address, you’ll see the job price laid out plainly, and if distance is a factor you’ll see exactly what that part is. The price I quote is the price you pay, no deposit, and no surprise “travel fee” sprung on you on the day. If you’re in or near Brisbane, Ipswich, Logan, the Gold Coast or the Sunshine Coast, you’re well inside our patch.
Worried more about getting a dud installer than about the dollars? Read how not to get ripped off by an insulation company in Brisbane.
Straight answers
Underfloor insulation cost: the questions I get asked most.
How much does underfloor insulation cost in Queensland?+
As a 2026 guide, installed polyester underfloor insulation runs about $28–$35 per square metre, and most whole jobs land in the $1,000–$2,000 range depending on floor area, access and subfloor condition (bands from Pricewise Insulation). Closed-cell spray foam is roughly $40–$60+ per square metre for the same job. I don't publish a single fixed total because two houses with the same floor area can be hundreds of dollars apart once access and subfloor condition are in the mix. Send me your address and I'll work out a fixed price.
Why is spray foam underfloor so much more expensive than polyester?+
Foam is a specialist two-part product mixed and sprayed on site, so it costs roughly $40–$60+ per square metre underfloor, and Brisbane Spray Foam's own published list puts closed-cell at $70–$120 per square metre depending on the job. Polyester is about $28–$35 per square metre installed (Pricewise). So you're paying two-to-four times as much for foam. The catch is what you're buying for that extra money: an option that seals moisture against your floor timbers in our humid climate, and that you can't lift back out once it's cured. For an SE-QLD subfloor that's a poor trade.
Is underfloor insulation worth the cost in SE Queensland?+
For a raised timber floor (a Queenslander, a home on stumps, an old low-set with a suspended floor) yes, it's usually worth it. An uninsulated timber floor is a big cold surface in winter and lets conditioned air leak away year-round; polyester between the joists takes the chill off the floorboards and helps your heating and cooling do less work. At about $28–$35 per square metre it's one of the cheaper comfort upgrades on the house. A slab-on-ground house is a different story. There's no subfloor to get into, so this isn't for you.
Do you charge extra for travel outside Brisbane?+
We cover a big patch of SE QLD and the home turf out west, and on jobs a long way from base there can be a travel component in the price. It's the diesel and the hours on the road, not a markup. I'd sooner show you that up front than dress it up in a higher per-metre rate. When I quote your address I'll show you the job price plainly, and if distance is a factor you'll see exactly what it is. No surprises on the day.
Can the cheapest underfloor quote end up costing the most?+
It can. The cheapest quote is often the one that skips the things you can't see: a quick job that leaves gaps between the batts, the wrong product sprayed into a damp subfloor, or a DIY foam kit that goes on uneven and traps moisture. Gaps quietly bleed the performance you paid for, and a sealed-up damp subfloor can drive hidden rot that costs far more to put right than the insulation ever saved. The cheapest number on paper isn't the cheapest house to live in.
How do I get an exact underfloor price for my house?+
Send me your address through the quote form. For most houses I can work out a fixed price from the floor area and what I can see of the subfloor and access, and I'll have it back to you within 48 hours. There's no deposit. You pay when the job's finished and you're happy. The price I quote is the price you pay; if I've under-measured something, the extra is on me, not on you on the day.
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Want a real number for your floor?
Send me your address and I’ll work out a fixed underfloor price. Most houses back within 48 hours, no deposit, and travel shown plainly if it applies. Polyester that won’t trap moisture, fitted properly across Brisbane & SE QLD.
Peter Johnson
Owner / installer · Comfort Zone Insulation Team® · Since 1986
In the trade and want to install it yourself? We make cellulose in Tiaro and run exclusive territories: franchise with the family.