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 honestly which way is the better value before you spend a cent.
One skip, one job
old fibreglass cleared out properly
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 honest 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 honestly 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. The honest answer is that 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.
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.
Honest 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 honestly 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.
Still deciding? Read top over vs remove your old insulation →
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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 honestly 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