Pipes behind old radiator, putty/asbestos?

[Intet]

Isn't it dust combined with gypsum sanding dust from various repaintings of the apartment over the years? And maybe a piece or two of organic material from the flowers that have fallen from the windowsill and dried there on the pipe?

Don't forget wet filler that has fallen down during several renovations. That explains the consistency, thickness, and uneven distribution + a lot of dust, hair residues, skin cells, dead mites, and a number of various airborne particles such as bacteria, viruses, mucus, sweat, etc., that have floated in under the radiator and stuck to the pipe behind it during their detached journey around and around in the room.

What exactly the combination of thousands of substances collected behind that particular radiator in that specific room is, no one knows. But IT IS NOT ASBESTOS!

 

[Claes Sörmland]

Now I think TS should send a sample for asbestos determination. You should never say never, maybe someone has messed with asbestos in this apartment at some point in history and dust has landed there on the pipe. You have to take the good with the bad!

 

[Slottsfrun]

Isn't it dust combined with gypsum dust from various repainting of the apartment over the years? And maybe some organic material from the flowers that have fallen from the windowsill and dried onto the pipe?

The strange thing is that part of the pipe behind the radiator has nothing at all. Just a regular layer of regular dust. And then there's a section, quite a long stretch, that has a lot. If it were regular dust or gypsum residue etc., it feels like it should have been pretty much the same everywhere.

 

[Slottsfrun]

The strange thing is that part of the pipe behind the radiator has nothing at all. Just the usual layer of regular dust. And then there's a part, quite a long stretch, that has a lot. If it had been regular dust or plaster residue, it feels like it should have been somewhat evenly distributed everywhere.

Additionally, the wall itself is not made of plaster but some form of concrete.

 

[Claes Sörmland]

The strange thing is that part of the pipe behind the radiator has nothing at all. Just a regular layer of ordinary dust. And then there's a part, quite a long stretch, that has a lot. If it were regular dust or plaster residues, it feels like it should have been more or less uniform everywhere.

Perhaps someone has applied spackel above and the spackel/plaster has dripped or settled as sanding dust. Maybe paper covered one part of the pipe but not the other? Quite typical during painting work.

 

[LaT]

Change the filter and bag after cleaning is done, I hope you mean.

Both before & after.