Help! How to insulate visible blue concrete???

[Greeneyes]

Hello,

I have a terraced house from the 50s and knocked off some tiles from a sidewall today. Foolishly spontaneous as I was, I didn't think about the blåbetong behind it, and it is now fully exposed on an area of about 2m2. How should I best address this? Is it drywall compound and some type of insulating paint (like bathroom paint)?

All advice is gratefully received, I feel so stupid for starting the project without thinking. And what about the dust from the blåbetong that I probably inhaled? Should I be worried? I've googled like crazy but can't find anything that specific about it. :x

 

[Stefan N]

If you think of radon, it's a gas, not dust.

 

[Greeneyes]

If you're thinking about radon, it's a gas, not dust.

Yes, it is a gas, but I don't know if the dust/fine concrete particles created during the demolition can be dangerous to inhale. It might be that they remain in the lungs or something and produce radon. I'm not particularly well-read on the subject of blåbetong dust *s*

 

[Demmpa]

The danger in blåbetong is not the gas but the radioactive decay.
http://sv.m.wikipedia.org/wiki/Blåbetong
http://www.radonguiden.se/lattlast.asp
http://www.radoninstrument.com/default.aspx?PID=100
http://www.stralsakerhetsmyndighete...en:meta:TimeStamp+sort:reverse:meta:TimeStamp

 

[Greeneyes]

How do I best treat it? I was thinking about painting the top layer, but should I use gypsum filler underneath and some kind of bathroom paint? Or do you have other suggestions?