Insulation removal & ceiling vacuum · Brisbane & SE QLD
Insulation removal & ceiling vacuum, Brisbane.
We vacuum out old, rat-fouled, water-damaged or fibreglass ceiling insulation across Brisbane and SE Queensland, then top over or replace it. Cellulose can be vacuumed out and reinstalled. Fixed price, no deposit.
Half the time, removal isn’t even necessary. If the old stuff is dry and clean we just pump straight over it. I’ll get up in your roof and tell you which way is the better value before you spend a cent.
One skip, one job
old fibreglass cleared out properly
From our customers
Real people, real results — here's what they say.
Jung K
Riverhills, 2023
“An experienced family operation. Highly recommend. Thank you for the great job!”
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.”
Benjamin H
Carseldine, 2019
“Very good explanation about their works. Advice of existing problems with the roof. Clean work. Very professional.”
What is ceiling vacuum & insulation removal?
Old insulation out, before the new goes in.
Insulation removal is exactly what it sounds like: we vacuum the old, failed or fouled insulation out of your roof space so you can start clean. It’s the job you book when the existing batts are rodent-soiled, water-damaged, settled to nothing, or simply have to come out because the ceilings are being replaced.
Here’s the bit most people aren’t told first: a lot of the time you don’t need removal at all. If the old insulation is dry and clean and still doing a job, we can usually pump fresh cellulose straight over the top to bring it up to the R-value you want, no removal cost, no skip bin. Removal is only worth paying for when the old layer is genuinely beyond saving.
Either way, I’ll tell you which it is. The point of getting up in your roof first is so I can give you a straight answer and a fixed price, not talk you into a removal job you don’t need. Then, once it’s clear, we move on to fresh ceiling insulation done the right way.
A roof cavity littered with old fibreglass batt debris from a previous bad install, exactly the kind of broken-down mess we vacuum out before any fresh insulation goes in.
The first question I answer
Do you actually need it removed, or can we top over it?
This is the call that decides what your job costs. I'd rather save you the removal fee where I can, so here's exactly how I weigh it up when I'm standing in your roof.
Remove it when…
- ✕
Rodent-soiled or smelly
Once rats and mice have been living in old batts (urine, droppings, nesting, the lot) there's no cleaning it. It comes out and goes in the skip.
- ✕
Water-damaged
Batts that have copped a roof leak hold the damp, sag and grow mould. Wet, broken-down insulation isn't insulating anything, so out it goes.
- ✕
Settled or broken down
Old fibreglass that's settled, thinned out and gone powdery has lost most of its R-value. There's little point pumping over a layer that's already failed.
- ✕
You're replacing the ceilings
If the plaster's coming down anyway (a reno, water damage, a new layout) that's the moment to clear the old stuff out and start fresh.
Top over it when…
It's dry and clean
If the existing insulation is dry, clean and reasonably intact, we can usually pump cellulose straight over the top to bring it up to the R-value you want, no removal cost.
It's just thin, not wrecked
Plenty of older homes simply have too little insulation rather than ruined insulation. Topping over is the cheaper, faster fix when the base layer is still doing a job.
Not sure which side of the line your roof falls on? Read the full breakdown in top over vs remove your old insulation.
The job nobody warns you about
Rat-fouled batts: there’s no cleaning them.
I pull rat nests out of batt-insulated roofs every week. When I lift old fibreglass or polyester batts that rodents have been living in, what’s underneath is urine soaked into the plaster, droppings, nesting and a smell you can’t un-smell. That’s not insulation any more. It’s a health problem sitting directly above your bedrooms.
You can’t wash it, you can’t patch it, and pumping new product over the top just buries the mess. Fouled batts come out (vacuumed up, bagged and skipped) and then we start fresh. It’s a grim job, but it’s the only one worth doing once rats have got in.
And the reason I steer people to cellulose afterwards isn’t a sales line. It’s that the insects rats feed on can’t survive in the borate-treated cellulose, so there’s nothing in there for them. In 6,000+ roofs I’ve never pulled a rat nest out of one we’ve pumped with cellulose. I’m confident enough about it to put $1,000 on it.
Cellulose pumped back into a ceiling after a vacuum-out, a clean, even blanket laid around the ducting and cabling, ready for the next decades.
The circular-economy bit
Cellulose can be vacuumed out and reinstalled.
Here’s a genuine advantage that almost nobody tells you about: cellulose can be vacuumed out and reinstalled. It’s one of very few insulations that doesn’t automatically become landfill the day you renovate. If you’re having your ceilings replaced (a reno, a new layout, water repairs) we can vacuum the cellulose out, let the builders do their thing, and pump the same product straight back in afterwards.
Old fibreglass and rockwool don’t work like that. Once they come out, they’re itchy, dusty, broken-down waste. They fill a skip and go to the tip. I dump whole trailers of that stuff. Cellulose is recycled paper to begin with, so re-using it in the same roof is about as low-waste as insulation gets. It’s the same reason cellulose is the only product I’d use in my own home.
The material behind most of our removal jobs
Fibreglass insulation removal, and what goes back in its place.
Most of what comes off a Brisbane roof on a removal job is old fibreglass batts, not cellulose. Here's why they end up in the skip rather than under a fresh layer, and what we put back once they're out.
Why old batts get pulled rather than topped over
A batt starts life as a fluffy roll with air trapped through it, and that trapped air is most of what makes it insulate. Walk on it, stack storage boxes on it, or just leave it sitting under its own weight long enough and it packs down flat. In my experience batts get properly slumped and compressed anywhere from about five to ten years in, sooner if the roof’s been used for storage or someone’s been up there kneeling on them for wiring or plumbing work. Once a batt’s flattened out and shrunk away from the joists like that, it’s nowhere near the R-value on its own pack any more, and pumping fresh product over a squashed, gappy layer is a false economy. That’s the point I tell people to pull it out rather than top over it.
The itch and the disturbance
Pulling old glasswool out is the itchiest, dustiest job in this trade. Fine glass fibre works its way into every collar and cuff the moment you disturb a batt that’s sat undisturbed for twenty years, and it stays airborne a lot longer than people expect once it’s stirred up. As I tell my own crew: “I make sure my staff use asbestos-rated masks and disposable suits any time we’re asked to install or remove fibreglass batts or associated products, and sometimes we’re still itchy for four days afterwards.” That discomfort may matter more for people with asthma, bronchitis or other breathing issues, which is why we handle every removal the same way regardless of who’s asking. If you want the full breakdown on particle size and what’s actually airborne once a batt’s disturbed, see are fibreglass batts safe and the best insulation if you have asthma.
Mould and pest contamination
Fibreglass holds onto moisture rather than shedding it, so once a roof leak gets into a batt it stays wet and grows mould right through the fibre instead of drying out. And once rats or mice have nested in a batt, which I cover in full above, there’s no cleaning it. Mouldy or rodent-fouled batts don’t get topped over. They come out, get bagged, and go to the tip.
How we contain it on the way out
On top of the mask and the disposable suit, we seal off the room below with plastic before we open the manhole, bag the old batts as we go rather than throwing them down loose, and carry the bags out through the house sealed rather than shaking them out anywhere near your living space. It’s slower than just ripping batts down and chucking them through the manhole, but it’s the difference between the dust staying in the roof and the dust ending up in your lounge room.
What goes back in
Once the roof’s clear, what goes back in is your call. Most customers go with Cellulose Fibre Insulation, the borate-treated plant fibre that rats and mice can’t nest in, or polyester batts where a batt still suits the job. If you’re still weighing up fibreglass against the alternatives first, our full buyer’s guide is at fibreglass batts, what you’re actually buying, and if you want a price on genuine Pink Batts or Earthwool while you’re deciding, see Pink Batts and Earthwool quotes in Brisbane.
Do you have fibreglass batts in your roof now? We can quote to remove them or fix your insulation so there are no loose particles floating around up there.
If you’d rather not think about loose particles at all, the two products that don’t have the problem are Cellulose Fibre Insulation (a plant fibre) or polyester batts. Get a quote →
Old fibreglass batts slumped and pulled apart, with lumpy gaps opening up between the timber joists. This is the state most of our fibreglass removal jobs are in by the time we’re called.
Correct respirator and PPE on every job. We wear the same standard of protection pulling out somebody else’s fibreglass as we do handling our own product.
Why we don’t cut corners on removal
Asbestos-rated masks on every fibreglass removal.
Pulling out old insulation is the dustiest, dirtiest part of this trade. Old fibreglass is itchy and throws fine fibre dust everywhere the moment you disturb it. The manufacturers’ own safety sheets tell you to wear a P2 dust mask just to handle a fresh batt. Once it’s decades old, settled and full of who-knows-what, a flimsy paper mask isn’t enough.
So on removals our crew wear asbestos-rated respirators, not throwaway dust masks. In older Queensland homes you genuinely don’t always know what’s been disturbed up there over the years, and a few hours in a roof full of old fibre dust isn’t worth anyone’s lungs. We’d rather be over-careful than have a regret.
If there’s any chance of asbestos
Super-6 sheeting, old fibro and some pre-1990 materials can contain asbestos. If there’s any doubt, stop, don’t disturb it, and get it tested by a licensed assessor before anyone goes up. We won’t touch suspected asbestos; that’s a licensed removalist’s job, not an insulation crew’s.
Straight answers
Insulation removal: the questions I get asked most.
Do I have to remove my old insulation before adding more?+
Not always. If the old insulation is dry and clean, we can often top over it with cellulose to bring it up to the R-value you want. That's the cheaper option and there's no removal cost. If it's rodent-soiled, water-damaged or broken down, it's better to vacuum it out first and start fresh. I'll get up in your roof and tell you which way is the better value for your house before you spend a cent.
How much does insulation removal cost in Brisbane?+
It depends on what's up there, how much of it, and how hard the access is. A tight two-storey with no manhole takes a lot longer to clear than a low-set with an easy hatch. I don't publish a flat removal rate because every roof is different. Send me your address and I'll have a look, tell you whether removal is even necessary, and give you a fixed-price quote, with no deposit to pay.
Can cellulose be vacuumed out and reused?+
Yes, cellulose can be vacuumed out and reinstalled, which makes it one of very few insulations that doesn't automatically become landfill the day you renovate. If you're having ceilings replaced, we can vacuum the cellulose out, do the work, and pump it back in afterwards. Old fibreglass and rockwool, by contrast, generally come out, fill a skip and go to the tip.
Is it safe to remove old insulation yourself?+
I'd be careful. Old fibreglass is itchy and dusty, and the manufacturers' own safety sheets tell you to wear a P2 dust mask when handling it. On removals our crew wear asbestos-rated respirators because in older Queensland homes you genuinely don't always know what's been disturbed up there, and a few minutes in a roof full of old fibre dust isn't worth the risk. If there's any chance of asbestos (Super-6, old fibro), stop and get it tested before anyone goes up.
How do I know if my fibreglass batts need removing rather than topping over?+
Get up there and look at them properly, or send me a photo. A batt that's still got its loft, its thickness, and sits flat against the joists is usually fine to top over. A batt that's gone flat, shrunk away from the joists, or left gaps you can see the ceiling through has lost most of the trapped air that made it work in the first place, and no amount of cellulose on top fixes a squashed layer underneath. I see batts get to that state anywhere from about five to ten years in, sooner if the roof's been used for storage or someone's been up there kneeling on them for wiring or plumbing work. Once they're flattened out, removal is the better spend.
Still deciding? Read top over vs remove your old insulation →
Worried about a damaged ceiling? See what to ask before you book a removal →
Watch it being done
Insulation removal jobs from our channel.
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Old insulation got to go? Let’s have a look.
Fill in our simple online form and I’ll get up in your roof, tell you whether you need removal or whether we can just top over what’s there, and give you a detailed fixed-price quote within 48 hours for most houses. No deposit, no day-of surprises. Servicing Brisbane & SE QLD.
Peter Johnson
Owner / installer · Comfort Zone Insulation Team® · Since 1986