Hello!
I'm currently renovating the apartment and have reached a stage where I've torn down a door frame. When I was almost finished with the demolition, I discovered blue concrete.
Does anyone know if it's something to worry about? I'm in the process of plastering the concrete as quickly as possible, as I don't want to be exposed to it more than necessary.
But as I said, does anyone know the risks of working with it?
Kind regards, Karl-Johan
I'm currently renovating the apartment and have reached a stage where I've torn down a door frame. When I was almost finished with the demolition, I discovered blue concrete.
Does anyone know if it's something to worry about? I'm in the process of plastering the concrete as quickly as possible, as I don't want to be exposed to it more than necessary.
But as I said, does anyone know the risks of working with it?
Kind regards, Karl-Johan
The danger with blåbetong is that it emits radon, which is a gas that is hazardous with long-term exposure. What makes it dangerous is that it "sticks to dust particles and becomes something called radon daughters (I'm not well-read on exactly what a radon daughter is, but oh well), these are not healthy either to get into your lungs, especially if you are a smoker. They are carcinogenic. If I were you, I would measure the radon levels in the apartment, because radon is emitted regardless of whether you treat the blåbetong or not.
Bluestone contains varying amounts of radon depending on the type of bluestone it is. The rule of thumb (according to the professional who de-radoned my house) is that the darker blue it is, the more radon it contains. If it's really bad, the concrete is almost dark purple. I myself have a partition wall that is very faintly light blue. Apparently, that's nothing to worry about, as significantly more radon gas is generated under the house (which has now been addressed).
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