p>Yes, it's always a good idea to check the radon levels in your home, particularly if you're about to improve the airtightness of the building. </p> <p>Keep in mind that the risks of radon exposure in homes is not limited to the air, it can also be present in water if you get your water from a well. Here are a couple of pages on our site where you can learn a bit more if you like  - </p> <ul> <li><strong><a href="https://www.ecohome.net/guides/2234/mitigating-radon-gas-in-homes/" target="_blank">Mitigating radon gas in homes</a></strong></li> <li><strong><a href="https://www.ecohome.net/guides/2196/removing-radon-gas-from-well-water/" target="_blank">Mitigating radon gas in water</a></strong></li> </ul