Radon levels in a home can be reduced by preventing radon from entering the home, increasing the rate at which it leaves, or both. Sealing cracks in the cement foundation of the home and upgrading the home’s ventilation system certainly help, for example.
However, it’s best to contact your local health organization or a radon specialist for detailed instructions about “radon-proofing” your home. They will be able to suggest the most appropriate course of action based on the specifics of the building.
Radon repairs run from $500 to $2500.