Radon-Resistant New Construction (RRNC) refers to building techniques and design features incorporated during the construction of a new home or structure to prevent radon gas from entering the indoor environment. These methods are aimed at reducing radon levels in homes, which can pose significant health risks over time. Key elements of RRNC typically include:

Gas-Permeable Layer: Installed beneath the foundation to allow radon gas to move freely beneath the house.

-Vapor Barrier **: Placed on top of the gas-permeable layer to prevent radon from entering the building.

-Sealing and Caulking: All cracks and openings in the foundation are sealed to limit radon entry.

– Vent Pipe**: A vertical vent pipe that extends from the gas-permeable layer through the house and vents radon safely outside.

– Junction Box: An electrical junction box is often installed to make it easier to add a fan later if needed for an active radon mitigation system.

These construction techniques help ensure that radon gas, which can seep from the ground into homes, is effectively vented outdoors, reducing the risk of indoor radon accumulation and protecting occupants’ health.