Answer: 

Yes, renovations and energy efficiency measures may affect radon levels in your home. Energy retrofits and some home renovation work will seal a home more tightly to reduce energy loss, which can mean that radon will build up more readily in indoor air. Also, some energy efficiency work, such as installing ventilation fans, may create negative pressure in a home and can draw radon into the home from the surrounding soil. A renovation that results in a more tightly sealed foundation, however, may reduce radon levels. Even if you have already checked your home for radon, it is a good idea to conduct another radon test after the energy retrofit work or renovation has been completed.

Answer Author: 
Erica Phipps
Answer Author's Email: 
erica@healthyenvironmentforkids.ca