I think the new place has an old asbestos roof but how to check?

It is marked everrite ac sheet. Presume the ac stands for asbestos concrete? Is that right?

What are the rough order of magnitude costs to remove and replace as it leaks in a few places

Easy
Take it off, double bag it and take it to your local recycling centre.
They will have a section for it.
It’s only an issue if it’s loose fibres or you start cutting it with a saw releasing the dust.
There are zero requirements for specialist companies with sheets and anyone who tells you otherwise is ill informed or looking to make money

HSE advice here
and here

That advice applies to duty holders, employers and SE undertaking it as a job.
The OP is none of them.
Your own roof your only need to do the above.
Wetting it down only covers the cement and does nothing to the asbestos as the fibres are either serpentine and barbed or amphiboles and hydrophobic.
What 99% don’t realise is that it is only a risk through inhalation as your body cannot process the fibres as they cannot be broken down.
Get an FFP3 respirator and make sure you don’t cut or drill it.
Breaking it into pieces is not a risk as you are not creating a dust.

As above but check what the requirements are from you council/household recycling centre. Some centres won’t accept it at all and you’ll require a special collection or a skip. For example our local in Ipswich takes no hardcore for free at all and states no asbestos products on the entry sign.

We had a garage taken down recently – made entirely from asbestos chrysotile sheets. I sent a small sample off to a lab to be tested – think it was £35 (AIB asbestos removal I think they were called). I got various quotes from £1600 to £3k for demolition and disposal, which all seemed a bit steep as it’s a non-licensed product. In the end I stuck an advert on one of those trust-a-trader type websites, clearly stating it was asbestos removal. I had 3 calls within 24hrs with prices from £350-450 incl disposal of all the sheets and timber frame! Would have prob cost me that much in skips if I’d done it myself!

Phone your council waste refuse recycling centre to find where / how to take it. I took a white asbestos garage roof off a few years ago. Simply broke it into pieces, bagged and drove it to the tip and put it in the designated bin. There are lots of people out there happy to make lots of money out of peoples’ unfounded fears. Used to work for a manufacturer of respiratory protection – we’d advise the industry. Most of the asbestos commonly used in domestic property is fairly innocuous unless you start grinding it up and snorting it.

When I was a kid I sawed up sheets of asbestos cement and stuck them together with fire brick cement to make a fireplace for a den. I’m still alive many many years later.

Could take 30 years plus for symptoms to start showing…

I had 3 calls within 24hrs with prices from £350-450 incl disposal of all the sheets and timber frame!

Mmm I wonder where that ended up?

Mmm I wonder where that ended up?

My thoughts exactly.

^^^^ one would like to say they showed their licence and gave a ticket / receipt for the job ???

Disposed of properly you should get a waste transfer note (because the stuff belongs to you not the bloke dumping it).

Most of the asbestos commonly used in domestic property is fairly innocuous unless you start grinding it up and snorting it.

Not applicable to the OP, but there are a lot of houses with adjoining garages where asbestos insulation board was used to fireproof line the garage ceiling. That can be one of the more hazardous products, notifiable before removal and usually nailed in place so has to be damaged or broken to remove. Take shortcuts and the fibres have a nice easy route into your house.

I’ve reported two incidents of large amounts of flytipped asbestos very recently. In my opinion those who pay the flytippers and the flytippers themselves are equally culpable for these incidents. It’s abhorrent behaviour.

Take it off, double bag it and take it to your local recycling centre.

This but check where the nearest is that will take it (not all do) and their exact requirements. You may find you are lifting it to shoulder height to push through a slot in a closed skip, that’s what I did in Chichester

I’m still alive many many years later.

Take it seriously. A friend of my Dad’s died last year as a result of exposure to asbestos, it’s not how I want to go.

We had a roofer remove ours and put up a new OSB/felt roof with 3 sides full lead flashing for £1500 all in. Couldn’t diy as the boiler and lots of electrics are in there and I couldn’t leave the garage uncovered for days.

Mmm I wonder where that ended up?

Legit company, not just one man and a van. Aware of duty of care etc and very keen it didn’t just end up dumped on a country lane somewhere. I also hate flytipping and have reported several instances myself.

I have an asbestos Garage roof. There do seem to be traces of white powder about every now and then. (Occasionally carried down by condensation drips for instance.)

I get the feeling it’s pretty much crumbling in situ.

So (assuming it’s the bad asbestos) is leaving it alone really safe?

I paid about £1200 for someone to dismantle and dispose (properly) of my old asbestos roof and replace it with steel box profile stuff. All done in less than a day. It’s much more waterproof and much less drippy when it’s damp, should be substantially stronger too (someone broke in by just bashing a hole in the asbestos). Ours is a glorified shed more than a ‘proper’ garage though, so I was happy with steel rather than tiles..