Where we work · Climate Zone 2
Cellulose insulation in Ipswich & Springfield.
Well inland on the Bremer flats, Ipswich and Greater Springfield run hotter in summer and colder in winter than the coast. From heritage Queenslanders in Ipswich to brand-new dark-roofed estates in Springfield, we insulate them with cellulose made in our own factory.
Where we work
180+ Ipswich & Springfieldhomes — and what your neighbours say.
Every red dot on the map is a home near here we’ve quoted, advised or insulated (de-identified) — recent records only, a fraction of what we’ve done since 1986.
From a local
“The work was great! No complaints at all. Highly recommended professional!”
“Very efficient and professional”
“Peter did a fantastic job at a very reasonable price”
The local picture
What Ipswich & Springfield homes actually need.
This is the temperature extreme of South East Queensland. The Amberley record nearby shows 31°C-plus summer afternoons AND regular winter frosts, with overnight lows averaging around 5°C in July. That wide day-to-night swing is exactly where a deep, settled cellulose ceiling pays off twice over. Greater Springfield's newer estates often have darker roofs that run hot, so quality ceiling insulation keeps the cooling bills down; Ipswich's older timber Queenslanders on stumps add a strong case for underfloor insulation against the frosty mornings.
Ipswich & Springfield in brief
Founded
Began in 1827 as the 'Limestone' settlement on Yuggera/Jagera country; renamed Ipswich in 1843, made a municipality in 1860 and a city in 1904 — Queensland's oldest provincial city
People
229,208 across the City of Ipswich (ABS 2021 Census), one of Australia's fastest-growing cities
Industry
Built on coal mining, the railway workshops and the RAAF base at Amberley; today defence, logistics, health, education, manufacturing and rapid residential growth around Springfield and Ripley
Setting
On the Bremer River about 40 km south-west of Brisbane — inland and well off the coast, which makes it hotter on summer afternoons and cooler on winter mornings than the bayside suburbs
Why Comfort Zone
Cellulose insulation, by the family that makes it.
The only cellulose insulation maker still operating in Queensland.
We manufacture every bag ourselves in our own factory at Tiaro. The other Queensland cellulose makers have closed down over the years — these days our competitors buy theircellulose from us. Choose Comfort Zone and you’re dealing with the family who actually makes the product, start to finish.
We make our own cellulose
Most cellulose insulation sold in Australia is manufactured interstate — in Victoria, South Australia or WA. Ours is made right here in our own Tiaro factory, so you deal with the family who makes it, not a sales rep reselling someone else's product.
Three generations, since 1986
Peter learned the trade from his father, Lyle, and runs the business today with his sons. A real family business that's been insulating Queensland homes for nearly 40 years — not a franchise call-centre.
QR-code batch-tracked bags
Every bag we pump into your roof is QR-coded and tracked back to its production batch and your job — full traceability that even the big national brands can't offer.
Don’t take our word for it
Here’s what Our customer, a fellow Ipswich local, reckons about us.
Filmed on a real Camira job — not a paid actor.
Read the transcript
Peter here from Comfort Zone, the installation team. So we've just packed up and cleaned up here. We've just finished this job here for Christine. And so Christine, what did you think of our job? I think it's one of the hardest jobs I've seen people do. Yeah, excellent. Thank you so much. Yep. And so you're happy with our promptness and things. But what made you choose Comfort Zone over the other companies on the market? Was there anything that stood out? Probably just the fact that I've spoken to some people, other people that have Comfort Zone in their houses. Yeah. Okay. It was more a word of mouth. Oh, excellent. Yep. So you referred to us. Well, you can't get a better referral than that. So thank you very much for that, Christine. And there's the pup.
Ipswich & Springfield climate
The weather your insulation has to handle.
- Climate zone (sets your ceiling R-value)
- NCC Climate Zone 2 — warm humid summer, mild winter. Added ceiling R-value of about R2.5 applies (NCC 2022 Volume Two, Table 13.2.3c). It is the same band as metro Brisbane, so the comfort job is mostly about keeping summer heat out of the roof.
- Days per year 30°C or hotter
- About 97 days a year reach 30°C or more at Amberley AMO (BoM 040004, records 1941–2026) — roughly one day in four. January alone averages about 20 such days. A ceiling that hot for a third of the year is exactly where blown cellulose earns its keep.
- Hottest day on record
- 44.3°C on 6 January 1994 at Amberley AMO (BoM 040004, 1941–2026). On a day like that an uninsulated roof cavity can climb past 60°C, and sealing it off with cellulose is what keeps the rooms livable.
- Hot, sticky summer nights (January)
- January nights average a 19.7°C minimum while days average 31.2°C, with 9am relative humidity around 67% (BoM 040004). Humid nights that barely cool down are when a sealed, well-insulated ceiling matters most, because the house can't dump the day's heat.
- Coldest month (July)
- July, the coldest month, still averages about a 21.3°C maximum with a 5.4°C overnight minimum at Amberley AMO (BoM 040004). Mild by southern standards, but those cool valley nights are why a sealed ceiling helps hold warmth in too.
- Coldest night on record
- −4.9°C on 8 August 1995 at Amberley AMO (BoM 040004), during a severe southern-Queensland cold snap — proof that genuine frost reaches the inland Ipswich valley on still, clear mornings, unlike the effectively frost-free bayside suburbs.
Ipswich sits in one of the hottest inland pockets of south-east Queensland, and the long Amberley record shows summer doing the heavy lifting: about 97 days a year already top 30°C and around 13 hit 35°C or more (Bureau of Meteorology, Amberley AMO station 040004, records since 1941). The hottest day on record is 44.3°C (6 January 1994). As hotter, longer summers become the norm and air-conditioning carries more of the comfort load, the value of stopping that roof-space heat before it reaches the living space only grows. The honest read for our climate zone is that summer heat — not winter cold — is the main game here.
Note: Figures are from the Amberley AMO long-record station near Ipswich; Springfield shares the same inland climate.
Climate outlook reviewed 2026-06-11; local job counts updated 2026-06-26. Sources: BoM: Amberley AMO climate · ABCB climate-zone map (QLD).
Ipswich & Springfield at a glance
- Climate zone
- Climate Zone 2 — what R-value that needs
- Postcodes
- 4305, 4300
- Local picture
- Ipswich City is home to well over 200,000 people, and Greater Springfield is one of the fastest-growing master-planned communities in the country.
Ipswich and Springfield are still NCC Climate Zone 2, but as the inland western edge of it they cop the widest temperature swing in SE QLD, so the ceiling insulation here genuinely works both ways, keeping heat out in summer and the heater's warmth in on frosty mornings.
What Zone 2 actually needs — straight from the NCC
Ipswich sits in NCC Climate Zone 2, where the code asks for about R2.5 of added ceiling insulation (NCC 2022 Housing Provisions, Part 13.2.3, Table 13.2.3c) — and we install a deep, gap-free R3.0 cellulose blanket as standard, about 20% over the minimum. Our climate is cooling-dominated, so there's no point chasing a giant R-value the weather won't reward; getting the blanket seamless and gap-free across the whole ceiling matters far more, especially under a hot tile or metal roof. Beware quotes citing “R5.5+” as the ceiling figure — that's a total-system / NatHERS number for the cold southern states, not what we need here.
Read it yourself: NCC 2022 Housing Provisions, Part 13.2.3, Table 13.2.3c — free from the ABCBThe season ahead — and why it matters for your insulation
Mid-2026 trending from neutral toward El Niño, drier, warmer days and clearer, colder, frostier winter nights inland. Reviewed each season.
Colder than you think
It’s colder around Ipswich & Springfield than in it.
Ipswich and Springfield sit in the inland Brisbane Valley, west of the coast and out of reach of the sea's moderating influence. The result is a wider daily temperature swing than coastal Brisbane: hotter, drier summer afternoons and colder winter nights that can frost on the valley floor. The nearest long-record official station is Amberley AMO (BoM 040004, RAAF Base Amberley) — right between Ipswich and Springfield — so its figures are the right benchmark for both, far better than coastal Brisbane numbers. On a winter night Amberley typically falls several degrees colder than Brisbane city. Springfield, sitting a little higher on the ridges (~70m versus Amberley's 24m), shares the same cold-night, frost-prone pattern. All temperature figures below are Bureau of Meteorology station records.
| Town | Height | Avg July night | Frosts / year | Avg summer day |
|---|---|---|---|---|
| Amberley AMO (BoM 040004) — benchmark for Ipswich & Springfield | 24 m | 5.4°C | Frosts on the coldest mornings; record low −4.9°C (8 Aug 1995). Cool, crisp winters with a high diurnal range — frost forms in the valley on still, clear nights. | 31.2°C (Jan) |
| Ipswich (CBD) | ~42 m | ~5°C (use Amberley 040004) | Frost-prone on still winter mornings; cold air pools in the low-lying Bremer River flats. Colder nights than coastal Brisbane. | ~31°C (use Amberley 040004) |
| Springfield / Springfield Lakes | ~70 m | ~5°C (use Amberley 040004) | Same inland cold-night pattern as Ipswich; light frost on exposed low ground on the coldest, clearest mornings. | ~31°C (use Amberley 040004) |
| Brisbane (coastal — for contrast, BoM 040913) | 8 m | 10.5°C | Effectively frost-free; the sea keeps winter nights several degrees warmer than Amberley/Ipswich. Note: station 040913 is a short record (commenced 1999), shown here only as a coastal contrast. | 30.4°C (Jan) |
- Amberley's July mean minimum of 5.4°C is about 5°C colder than coastal Brisbane's 10.5°C — the clearest measure of how the inland Ipswich/Springfield valley loses the sea's overnight warming (BoM 040004; Brisbane 040913, a short-record coastal station since 1999, shown for contrast only).
- Amberley AMO has recorded a low of −4.9°C (8 August 1995, during a severe southern-Queensland cold snap), confirming that genuine, hard frost reaches the Ipswich district — not just light surface frost (BoM 040004).
- Inland heat works both ways: Amberley's January mean maximum of 31.2°C runs a touch hotter than Brisbane's 30.4°C, so Ipswich and Springfield get hotter afternoons AND colder nights — a bigger daily swing the coast never sees (BoM 040004 vs 040913).
- Springfield Lakes sits at roughly 70 m elevation versus Amberley's 24 m and Ipswich CBD's ~42 m; the higher, more exposed ground shares the same frost-prone winter-night pattern as the surrounding valley (public elevation data; Amberley AMO 040004 as nearest official station).
- Amberley AMO (station 040004) has operated since 1941, giving an 80-plus-year record — the most reliable long-term climate benchmark for the Ipswich–Springfield corridor, both towns being too far inland to lean on coastal Brisbane figures.
Source: Bureau of Meteorology — Amberley AMO station 040004 (https://www.bom.gov.au/climate/averages/tables/cw_040004.shtml) for Ipswich & Springfield; Brisbane station 040913 (commenced 1999, short record) shown only as a coastal contrast. July mean minimums and summer mean maximums are BoM 'all years of record' statistics for Amberley (1941–2026). Amberley record low −4.9°C (8 Aug 1995) and record high 44.3°C (6 Jan 1994) are documented for RAAF Base Amberley. Springfield (~70 m) and Ipswich CBD (~42 m) elevations from public elevation data; both use Amberley AMO 040004 as the nearest official BoM station. BoM's standard climate table does not publish a frost-day count for Amberley, so frost is described qualitatively from the verified record low and July minimum rather than a fabricated day-count.
A bit about Ipswich & Springfield
We know this patch.
- Ipswich is the cradle of Queensland coal mining — coal was first found here in 1827 and the central-Ipswich mines opened at Woodend in 1848, with the city going on to power Queensland's railways and industry for well over a century (Ipswich Historical Society).
- The North Ipswich Railway Workshops, established in 1864, were Queensland's first, oldest and largest railway workshops — the only Australian rail workshop in continuous operation since the 1800s, building 200-plus steam locomotives and 13,000 carriages, and employing around 3,000 people at their WWII peak (Queensland Museum Rail Workshops).
- Being 40-odd km inland and away from the sea breeze, Ipswich is one of the hottest parts of South-East Queensland — RAAF Amberley regularly tops the low-to-mid 40s in a heatwave while the bayside suburbs stay in the 30s (Bureau of Meteorology, Amberley station 040004).
- The Bremer River has flooded Ipswich badly more than once — it peaked at a record 20.7 m in the January 1974 flood, 19.40 m in January 2011, and 16.72 m again in the February 2022 event, all inundating the CBD and low-lying suburbs (Bureau of Meteorology, Bremer River flood history).
- Greater Springfield, on Ipswich's eastern edge, is promoted as the largest privately built, master-planned city in Australia at 2,860 hectares — the first all-new city of its kind since Canberra — and is home to a University of Southern Queensland campus (Springfield City Group).
Local links: Bureau of Meteorology — Amberley (the BoM station for Ipswich) · Ipswich City Council · University of Southern Queensland — Springfield campus · Queensland Museum Rail Workshops, North Ipswich · Greater Springfield (Springfield City Group)
What we’d recommend in Ipswich & Springfield
The insulation that suits Ipswich & Springfield homes, and why.
RAAF Base Amberley, the country's largest, runs fast jets and heavy transports right beside Ipswich and Springfield. Gap-free cellulose absorbs that aircraft noise better than lightweight fibreglass.
Springfield's newer dark-roofed estates run hot in summer while Ipswich gets real winter frosts. A deep cellulose ceiling works both ways, keeping heat out in summer and warmth in on frosty mornings.
Ipswich has thousands of heritage timber Queenslanders on stumps; underfloor insulation cuts the frosty-morning chill and the heating bill.
That’s what we see most in Ipswich & Springfield, but every home is different. Browse all our insulation services or ask for a quoteand we’ll tell you what yours needs.
Underfloor, done right
Underfloor insulation in Ipswich: the high-set Queenslanders, not the slab estates
If you live in one of Ipswich's older high-set Queenslanders — up on stumps with the breeze running underneath, common right through Brassall, Raceview, Booval, Bundamba and old central Ipswich — your floor is doing more than you think. In winter that open subfloor sits at outside temperature, so the underside of your floorboards goes cold and heat drains straight down out of the room into the air under the house; you feel it as cold feet on the boards of a morning and a room that never quite warms up no matter how long the heater runs. An uninsulated suspended timber floor only rates about R0.25 (YourHome, the Australian Government's housing guide), which is next to nothing — basically a sheet of timber between your warm room and the cold air below — so putting a proper batt up between the joists cuts that downward heat loss right off.
It's the same story flipped around in a Queensland summer. When you've got the aircon running, cold air is heavy and it sinks — in a slab home it's got nowhere to go, but in a high-set timber house it drops straight down through the gaps in the floorboards and out into the subfloor, so you end up paying to cool the space under your house instead of the lounge room. That's why a high-set Ipswich home can feel like the aircon's working twice as hard as the same-size place on a slab, and sealing and insulating that floor keeps the cool air where you paid to put it. Coverage is everything down there: YourHome warns that even a small gap can greatly reduce the insulating value, and the insulation council's 2024 work, built on CSIRO's NatHERS method, shows that obvious gaps over about 6% of the area roughly halve the effective R-value — a few gaps around joists and pipes and you've thrown away half the job, which is exactly why it has to be fitted snug and held tight to the underside of the floor.
Now the honest part, because I'm not going to sell you something you don't need. Underfloor insulation only makes sense if you've actually got an accessible, ventilated subfloor — that's your high-set timber Queenslanders and post-war homes on stumps — so if you're in one of the Springfield, Springfield Lakes, Augustine Heights, Redbank Plains or Ripley estates on a concrete slab, there's no void under the floor to insulate and your money is far better spent in the ceiling. The other thing that matters is the batt staying put: the National Construction Code requires underfloor insulation to be fixed so it keeps its position and stays in full contact with the floor, because a batt that's sagged away from the boards or dropped onto the ground has stopped working, so we fit it to stay there for the life of the house. Our quotes are done online, so tell us your roof and home type and we'll size it properly without anyone having to come out first.
Watch: real jobs
See the work for yourself
A few from our own channel: does cellulose really settle, the flame test, and why we pump it in instead of laying batts.
Filmed on real jobs over the years — our methods, safety standards and products have moved on since. Subscribe to the channel for more.
The difference
On a Ipswich & Springfield roof: what we run into, and how we do it.
Where we’ve helped — suburb by suburb
342+ Ipswich & Springfield homes, and the postcode for yours.
Find your suburb below — the number is how many homes near you we’ve helped with advice or work. These are only the last few years we’ve kept digital records for, a fraction of what we’ve done since 1986, so if there’s no count next to your suburb yet, be the first on your street.
Ipswich & surrounds
342+ homes helped here
- 4300Brisbane118 homes
- 4305Ipswich23 homes
- 4305Raceview20 homes
- 4305Brassall18 homes
- 4300Springfield Lakes15 homes
- 4300Goodna13 homes
- 4305East Ipswich11 homes
- 4301Redbank Plains10 homes
- 4300Springfield10 homes
- 4301Collingwood Park9 homes
- 4305Flinders View9 homes
- 4304Bundamba9 homes
- 4305Yamanto8 homes
- 4300Camira8 homes
- 4303Riverview8 homes
- 4305North Ipswich8 homes
- 4304Silkstone7 homes
- 4305Eastern Heights7 homes
- 4300Bellbird Park6 homes
- 4305Leichhardt4 homes
- 4304Booval3 homes
- 4305Moores Pocket3 homes
- 4305Sadliers Crossing3 homes
- 4309Kalbar3 homes
- 4307Harrisville3 homes
- 4305One Mile2 homes
- 4305Coalfalls2 homes
- 4305Basin Pocket2 homes
- 4306Blacksoilbe the first
Counts are de-identified contacts from our records — homeowners we’ve helped with advice or work, not just completed jobs. See the customer map.
Your local team
Ipswich & Springfield is looked after directly by Comfort Zone HQ — for now.
Right now Ipswich & Springfieldis served straight out of our family HQ and Tiaro factory, the same people who make the cellulose. Every job is done to one standard, photographed, and the photos checked before you’re invoiced.
Want to run Ipswich & Springfield as your own business?
We’re looking for the right local owner-operator for this patch. If you’re passionate about the building trade — or you already run a business that fits, like air-conditioning, pest control, roofing or solar, and you want a high-margin add-on product to take to the customers you already have — we’ll train you from the ground up. You don’t need insulation experience; you need the right attitude and a patch you want to own. We make the product, we teach you to install and sell it, and you build a family business of your own — backed by the factory.
Ipswich & Springfield questions
Insulation in Ipswich & Springfield — your questions, answered.
Ipswich gets so hot in summer — should I just pile in as much R-value as I can?
No, and I'll talk you out of it if you ask. Ipswich is NCC Climate Zone 2, and the added ceiling R-value that does the job here is about R2.5 (NCC 2022 Table 13.2.3c). Past the right figure for your zone and roof, more insulation does nothing extra — it's like sunscreen, once you've got a good coat on, a second tube doesn't make you any safer. What matters far more than a big number is coverage: a ceiling filled corner to corner with no gaps beats a thicker layer full of holes every time, which is exactly why we pump cellulose in.
I'm in a Springfield or Redbank Plains estate on a slab — do I need underfloor insulation?
No. Those modern master-planned estates are almost all brick-veneer homes on a concrete slab poured straight onto the ground, so there's no void under the floor to insulate — underfloor simply doesn't apply to you. Your comfort dollars are far better spent getting the ceiling right, because in a slab home the whole game is keeping summer heat out of the roof space and keeping your aircon dollars in the house. Underfloor is for the older high-set timber Queenslanders, not for you.
My place is an old high-set Queenslander in Brassall — is underfloor worth it?
If you've got the breeze running under the floor on stumps, yes, it can be well worth it. In winter that open subfloor sits at outside temperature and heat drains straight down out of the room — you feel it as cold feet on the boards of a morning. In summer your cool aircon air is heavy and sinks straight out through the floorboards into the subfloor, so a high-set home can feel like the aircon's working twice as hard as the same place on a slab. An uninsulated timber floor only rates about R0.25 (YourHome), so there's real comfort to win back — as long as the subfloor's accessible and ventilated.
Can you really quote without coming out to look at my roof?
Yes — our quotes are done online, fixed price, and we don't bump the price when we arrive. Tell us your suburb, your roof type and your home type through the online form and we'll size the job properly from that. It saves you waiting around for a salesman and it saves us a trip, and the price you're quoted is the price you pay.
My house took on water in the floods — does the old insulation need redoing?
If it got wet, very likely yes. Ipswich has been hit hard more than once — the Bremer reached a record 20.7 m in 1974, 19.40 m in 2011 and 16.72 m again in 2022 (Bureau of Meteorology) — and wet, compacted batts lose their R-value and don't recover. Anything soaked needs drying out and re-insulating properly as part of the rebuild. One of the quiet advantages of cellulose is that it's hygroscopic: it holds a roof leak in one spot, dries out, and leaves a visible stain so the leak is easy to find later, instead of letting water run free across the whole ceiling.
I've already got old batts in the ceiling — do they all have to come out first?
Usually not. In most cases we top straight over the old batts with cellulose — about 100mm adds roughly R3.0 over whatever's already there, fills the gaps the batts left, and covers the timber joists (which only rate about R1.5 on their own). That saves the value of the old batts and saves you the mess, the skip bin and the dump fees of a strip-out. The exception is when the old batts are full of rat nests or have got wet — then they're better out.
Why use a trained installer instead of doing it myself or grabbing the cheapest quote?
Installing insulation used to be a trade qualification, like plumbing or wiring. Since that requirement was dropped, people have died doing it — falls and old-style downlights are the big ones. Cellulose insulates so well that it can trap heat over an old halogen or 240V downlight and cause real trouble, so those have to be shrouded with poly and the right clearance left, which is the kind of thing a trained crew does automatically. On price, a cheap batt job laid with gaps is mostly wasted money — you wouldn't want the cheapest lawyer defending you in court, and the same goes for what's keeping your house comfortable.
Had your Ipswich & Springfield home done? A review helps your neighbours choose well.
A quick honest review genuinely helps a small family business, and helps the next person decide. Thank you.
Get a quote for your Ipswich & Springfield home.
Tell us your address and a few details and we’ll measure online and send a detailed, fixed-price quote. Phone 0414 586 315.