The only way to know that radon levels inside a home are safe is to measure them, and yet most homes have yet to be tested.
Force Radon Solution LTD, recommends that all homes be tested and those over 200 becquerels per meters cubed (Bq/m3) should be mitigated. This standard applies to public buildings as well, including schools, libraries and childcare facilities.
Despite this recommended level of 200 Bq/m3, there is a large and growing body of evidence to suggest that radon levels should be kept as close to outside air levels as possible.
Because the amount of radon gas rising from the earth varies with changes in weather, wind and pressure, concentrations vary seasonally with the highest levels often occurring in winter months when we tend to keep our windows and doors shut more often. Although radon can be measured with a short 48-hour test, the best way to accurately determine the radon concentration in a home is to perform a long-term test lasting at least 91 days.
Once a radon mitigation system has been installed and move-in has occurred, Force Radon Solution LTD, will conduct a long term home radon study of at least 91 days. This is because Radon levels in a home change significantly over time. They can rise and fall from one hour or day to the next and seasonally. For this reason, measurements taken over a longer period of time are more accurate.
Force Radon Solution LTD, repeat these tests as needed and can also help by performing radon measurement tests in homes where no mitigation system has been installed.
Force Radon recommends performing long-term testing every 2 years using an approved test kit that includes a calibrated radon detection device and analysis by a certified radon measurement lab. In homes that use an active radon mitigation system will be equipped with system status and performance indicators that may range from a simple U-Tube manometer to wifi enabled digital monitoring systems.