Many new homes today are built to prevent Radon from entering the foundation. Some states even require builders to incorporate Radon resistant construction features. If you are building a new home or are a builder, it is a good idea to discuss these options with Advanced Radon Control, as it is more efficient and less costly to install either a passive or active system when the home is being built, and makes it easier should Radon reduction be required later on. These features, though effective, still may not entirely reduce Radon levels to below the EPA's approved standards, so even if your home is built Radon-resistant, it should still be tested after occupancy. In addition to decreasing the risk of lung cancer due to high radon levels, incorporating Radon-resistant features in a newly constructed home or commercial space has other value-added benefits such as:
- Increasing energy efficiency, saving money over time
- Reducing humidity, odors or mold
- Preventing leakage of other natural gasses from the soil
Gas Permeable Layer
A four-inch layer, usually made up of clean gravel, is placed under the slab or flooring to allow Radon to freely move under the house.
A layer of plastic sheeting is installed on top of the gas permeable layer and under the slab to prevent Radon from leaking into the home.
Any openings in the slab or foundation floor must be sealed to prevent Radon in the soil from entering.
Electrical Junction Box
A junction box is installed to serve an electrical venting fan if one is needed later to further reduce Radon levels.
A PVC pipe is also installed, running from the gas permeable layer up through the house to the roof level to vent the gas. To ensure safety, the vent must discharge above the highest eave of the roof as close to the roof ridge line as possible.