Questions and answers
What is radon?
Radon is invisible and odorless gas formed by radioactive decay of element radium. Radium exists in most rocks, uranium rich granite and alum shales. By spontaneous radioactive decay of radon are formed so-called radon substances. These are attaching to lung tissues and emit radiation. High levels of radon indoors are contributing factor to increased risk of lung cancer.
Why do we get radon gas in homes?
Radon has ability to bind to the other substances and can therefore easily enter into buildings with soil gas through cracks in foundation. Radon concentration in soil gas can be very high. Soil gas seeps into buildings because the air pressure in indoors air is often lover than in the ground.
Do I live in the house affected by radon?
The only way to find it out is measuring by track detectors. It is most economical and recommended way to measure radon concentration. Radon measurement with track detector should be done during the winter time over a period of at least two months. The result of track detector measurement gives an average radon level over the enrollment period.
How does radon affect my health?
Inhalation of air with high radon concentration is proven health hazard. Radon and it’s substances are produced by radioactive breakdown which are causing radiation. The most dangerous type of radiation in this context is called alfa rays. These rays can damage in our lung tissues, which can lead to transformation of healthy cells to cancer cells.
How big are health risks?
World Health Organization (WHO) classifies that radon is the second most important cause of lung cancer. Only smoking represents a major health risk for lung cancer. Between 100 and 300, of approximately 1800, lung cancer cases in Norway are caused by indoor radon. It’s very important to highlight that most of these cases are smokers. For example if there is radon concentration of 1000 Bq/m³, the risk of lung cancer will be the same as of one average smoker.
Which radon level is safe?
Norwegian Radiation Protection - NRPA (Statens strålevern) recommends to hold radon level low as much as possible in all buildings and that measures should be performed when the radon level in one or more living areas exceed 100 Bq/m³. NRPA highlights that measures may also be possible under 100 Bq/m³ if one can keep them significantly lower. Further recommendations from NRPA are that the levels of radon must always be less than maximum limit of 200 Bq/m³. NRPA is considering about that buildings like workplaces, schools, kinder gardens, commercial buildings and rental apartments should be required to have proper radon levels through regulations. Estimations are telling that up to about 170 000 Norwegian properties have radon concentration above 200 Bq/m³.
Source: Eurofins Scientific
Can I intersect with only RAD 1?
Yes, you can. We recommend to use RAD F sealant between membrane and concrete with tension list since concrete is usually not regular.
What is difference between cartridge and sealant container?
Sealant container is easier to handle. In case of larger areas our recommendation is to use sealant container for membrane lying against the wall.
When can I use RAD K tension list?
RAD X needs to be attached to installed wall. Tension list applies towards the wall together with RAD F.
Where can I use RAD M sealing compound?
In case of many stand outs use RAD M. Sealing compound is approved by SINTEF for this use.