New Construction

Construction is the perfect time to install a passive radon mitigation system. Radon-resistant new construction (RRNC) techniques can be incorporated during the building process to help limit radon entry and make future mitigation easier and less expensive.

A Message for Builders

Key features of Radon-Resistant New Construction (RRNC) include:

Gas-Permeable Layer: A layer of clean gravel or aggregate beneath the slab allows soil gases to move freely underneath the house.
Plastic Sheeting: Heavy-duty plastic sheeting is placed on top of the gas-permeable layer to help prevent soil gas from entering the home.
Sealing and Caulking: All openings in the concrete foundation floor are sealed to reduce radon entry.
Vent Pipe: A vent pipe runs from the gas-permeable layer through the house and roof to safely vent radon above the home.
Junction Box: An electrical junction box is installed in case a vent fan is needed later.

These features are simple and cost-effective to ensure the optimal performance of a radon system. If elevated radon is detected after construction, a system can be made active by easily adding a fan to the vent pipe to further reduce levels.