Blue concrete?

[Syltnäsan]

Blue concrete on the left?
Foundation wall on the right.

 

[KjellTimell]

Yes.

Even the foundation wall may be blue concrete, but since it is plastered, it is difficult to say for certain.

 

[JeLö]

Seems like it.
If you're wondering because of radon, there is blue concrete from three different factories, with varying amounts of radon.

 

[Syltnäsan]

Looks like it.
If you're wondering because of radon, there is blåbetong from three different factories, with varying amounts of radon.

Interesting, primarily delivered to nearby areas? This is in Sthlm.

 

[JeLö]

interesting, delivered to nearby areas primarily? This is in Stockholm.

I have no idea. Apparently, I have blåbetong from Gotland, as according to radon consultant Gilbert, I had low levels in the walls. It turned out to be ground radon I had a bigger problem with.

What I want to say is, don't start worrying about radon until you've actually done a measurement just because it's blåbetong.

 

[Cerb]

Yes.

Even the foundation wall can be blåbetong, but since it is plastered, it's hard to say for sure.

Possibly a thin layer as insulation, but it was still rare to build the wall out of blåbetong, wasn't it?