Garage roof, Asbestos?

Joined
12 Jul 2019
Messages
127
Reaction score
4
Country
United Kingdom
Hi,
I'm contemplating moving a concrete garage. Every time I've mentioned this I get warned about asbestos in the roof!

I think it might be tin, a magnet will stick to it. Did they mix asbestos and metal? Can I safely remove it?

thanks

IMG_20220112_135705732_HDR.jpg
IMG_20220112_135654287.jpg
 
Sponsored Links
Joined
7 Jan 2011
Messages
1,338
Reaction score
160
Location
Warwickshire
Country
United Kingdom
Well tin is very weakly magnetic, but not sure its magnetic enough for a small magnet to stick.

Are you sure it's not on a nail?

Asbestos, like tin, can be weakly magnetic (although due to contamination with iron, rather than Asbestos itself)

I'm sure someone will offer more help shortly!
 
Joined
12 Jul 2019
Messages
127
Reaction score
4
Country
United Kingdom
Not on a nail ;) While the top is certainly magnetic the underside is more concrete looking (pic) and very weakly magnetic


IMG_20220112_143134846.jpg
 
Joined
30 Dec 2018
Messages
10,668
Reaction score
1,439
Country
United Kingdom
I have never heard of magnetic asbestos. It looks like asbestos, right shape and colour, though not the detail of the embossing. That is far too deep and regular.
 
Joined
7 Jan 2011
Messages
1,338
Reaction score
160
Location
Warwickshire
Country
United Kingdom
Paramagnetic is the term, hence why I don't think you would be able to detect it with a handheld magnet.

Being magnetic, it suggests steel or iron, so could it be a coated iron/steel roof?
 
Joined
3 Sep 2006
Messages
35,941
Reaction score
4,980
Location
West Mids
Country
United Kingdom
Well tin is very weakly magnetic, but not sure its magnetic enough for a small magnet to stick.

Are you sure it's not on a nail?

Asbestos, like tin, can be weakly magnetic (although due to contamination with iron, rather than Asbestos itself)

I'm sure someone will offer more help shortly!
Magnetic asbestos? :cautious: They would be cement and fibre no metal or iron, and no contamination else the sheet would rust and split.

Metal roof sheets would be steel with a galvanized coating, not tin. And it would be the steel that is magnetic not any tin coating.
 
Sponsored Links
Joined
7 Jan 2011
Messages
1,338
Reaction score
160
Location
Warwickshire
Country
United Kingdom
Magnetic asbestos? :cautious: They would be cement and fibre no metal or iron, and no contamination else the sheet would rust and split.

Metal roof sheets would be steel with a galvanized coating, not tin. And it would be the steel that is magnetic not any tin coating.

I'm no material scientist, or builder for that matter, but both asbestos and tin are paramagnetic, meaning they do react to magnetic fields, although weakly, hence why a handheld magnet is unlikely to stick to them
"Almost uniquely among fibrous materials, asbestos has a magnetic susceptibility that results in a magnetic torque"

"Tin is considered paramagnetic, or weakly attracted to a magnet."
 
Joined
3 Sep 2006
Messages
35,941
Reaction score
4,980
Location
West Mids
Country
United Kingdom
I'm no material scientist, or builder for that matter, but both asbestos and tin are paramagnetic, meaning they do react to magnetic fields, although weakly, hence why a handheld magnet is unlikely to stick to them
"Almost uniquely among fibrous materials, asbestos has a magnetic susceptibility that results in a magnetic torque"

"Tin is considered paramagnetic, or weakly attracted to a magnet."
Is that from the internet? o_O

I've just checked some different ACM and not remotely magnetic.

The tin paramagetism is moot as there will never be a pure piece of tin around our homes, as it will only ever be in the form of a coating of magnetic steel.
 
Sponsored Links
Top