How dangerous is it if all the walls on one floor are made of blåbetong? Thinking about radon and gamma.
How dangerous is it to sleep with your head against a blåbetong wall?
Can this be remedied through increased ventilation and/or FTX? Can you worsen it by "pulling" more out of the walls?
A remediation (removal) of blåbetong feels very costly.
How dangerous is it to sleep with your head against a blåbetong wall?
Can this be remedied through increased ventilation and/or FTX? Can you worsen it by "pulling" more out of the walls?
A remediation (removal) of blåbetong feels very costly.
Familiar with the same problem, the entire house made of blåbetong did measurements that were not useful.
Tore everything out of the house. The exterior walls got an air gap, tight plastic, then new walls were built. All interior walls were torn down one by one, and new ones were built.
Tore everything out of the house. The exterior walls got an air gap, tight plastic, then new walls were built. All interior walls were torn down one by one, and new ones were built.
Well.. check with someone who knows.
As I understand it, the gamma level from blåbetong is "never" a problem; the levels are far below the limit (but it might be worth double-checking).
However, the decay that emits gamma radiation produces radon. Radon, which is a gas, emits alpha radiation.
Alpha radiation is bad health-wise, but it has the nice quality that it can't penetrate. A single sheet of paper is enough to stop the radiation (but not the gas). This means that alpha radiation normally doesn't reach any living part of your body; it doesn't penetrate the skin. The outer skin consists of dead cells.
But you inhale radon gas, and when radon decays in the air in your lungs, it results in alpha radiation, and in the lungs, you have living cells in contact with the air.
So it's important to reduce the level of radon gas in the air. This is usually solved by improved ventilation, if needed.
As I understand it, the gamma level from blåbetong is "never" a problem; the levels are far below the limit (but it might be worth double-checking).
However, the decay that emits gamma radiation produces radon. Radon, which is a gas, emits alpha radiation.
Alpha radiation is bad health-wise, but it has the nice quality that it can't penetrate. A single sheet of paper is enough to stop the radiation (but not the gas). This means that alpha radiation normally doesn't reach any living part of your body; it doesn't penetrate the skin. The outer skin consists of dead cells.
But you inhale radon gas, and when radon decays in the air in your lungs, it results in alpha radiation, and in the lungs, you have living cells in contact with the air.
So it's important to reduce the level of radon gas in the air. This is usually solved by improved ventilation, if needed.
Worth having someone come in and measure, not just "puck measurement"
got the information that the radon level of blåbetong varies depending on where it was produced
got the information that the radon level of blåbetong varies depending on where it was produced
It feels both uneasy and incomprehensible how extensive the renovation/measures needed are. Ideally, I would remove everything. That would make me feel safe. But even when the blåbetong is gone, there could also be ground radon.
Sanering of blåbetong sounds like about 500,000kr.
Sanering of blåbetong sounds like about 500,000kr.
You need underpressure under the house to remove ground radon.
Inside the house, you then need overpressure and good ventilation.
How practical it is to create this, and what risks it entails, is hard to say. Normally, you want underpressure inside a house so that moisture doesn't migrate out through the walls and roof.
Inside the house, you then need overpressure and good ventilation.
How practical it is to create this, and what risks it entails, is hard to say. Normally, you want underpressure inside a house so that moisture doesn't migrate out through the walls and roof.
We did a similar measurement as described hereA A.G said:
https://radoninstrument.com/blog/hur-kan-man-genomfora-en-radonbesiktning-pa-2-timmar/