Window sill in an apartment built in 1946

[Gustav Perman]

What can it be made of. There are whitish marks from flower pots.

 

[mexitegel]

It is most likely marble.

 

[SågspånPappspikEternit]

Take a picture of the underside as well, then you can see if it's eternit.

 

[Gustav Perman]

How can you tell from the underside that it is eternit?

 

[Paletten100]

How can you tell from the underside that it is eternit

Check for example this thread, especially #17:

https://www.byggahus.se/forum/threads/fonsterbrada-eternit-underhall.565135/

 

[Vrana]

This is what our windowsills in eternit cement look like at the front and back.

 

[Gustav Perman]

Take a picture of the underside as well, then you can see if it's eternit.

Here is a picture of the underside. Black hard surface not polished

 

[SågspånPappspikEternit]

Can you take a picture with the focus on the underside of the windowsill?

 

[Gustav Perman]

When I come to the apartment, I will take a better picture. I have spoken with the chairperson of the housing association. She says it is a stone slab. I wonder if wax with black color pigments might work.