Do you know the radon level in your home?
A 2020 study shows that 4 out of 10 homes in Denmark have radon levels that are too high. Radon is a gas that seeps up through the ground under houses, terraced houses and apartments and into the home. Radon is not a problem when it is allowed to seep away from the ground surface. The problems start when there is not enough ventilation in the home and the radon gas is kept inside. This is especially common in houses that have been energy renovated without focusing on ventilation. The study from Aalborg University shows that 39 % of Danish single-family houses, chain and terraced houses built before 2020 have too high radon levels in indoor air.
Do I have Radon?
Radon cannot be avoided and you will never achieve a lower radon level inside than outside, but you can keep it at a low level that is not dangerous. Since you can't see or smell radon, you can only measure the level with radon measuring boxes (dosimeters) or with electronic radon meters. If you have signs of a poor indoor climate, there may also be a risk that the radon level is too high.
Signs of poor indoor climate:
- More than 2 cm of moisture on the window panes during the cold periods of the year and moisture on the windowsill
- Mould growth
- Wallpaper that peels and/or bulges
- Bad odour
- Waking up with a headache
- The feeling of poor sleep when you wake up in the morning
Click here to check the risk of radon at your address on Bolius.dk
Solution
What can you do about high Radon levels?
You can do something about radon in your home, and there are several solutions depending on your needs and possibilities. You can ventilate, preferably 3 times a day for 5-10 minutes. This will reduce the radon level to almost the same as outside. However, this can be difficult to remember, and motivation can be low during the cold months when it quickly gets really cold if you air out for 7 minutes. That's why many people choose a mechanical ventilation system that does all the work for you.
DUKA One units change the air for you around the clock so you don't have to remember to ventilate. At the same time, they recover the heat of the air you change, so you recover up to 94% of the heat that would have been lost out of a window.
