radonitõkkeid

Radonitõkkeid are materials or systems designed to prevent or significantly reduce the intrusion of radon gas into buildings. Radon is a naturally occurring radioactive gas that emanates from the decay of uranium and thorium in soil and rocks. Because it is colorless, odorless, and tasteless, its presence can go undetected without specific testing. Prolonged exposure to high levels of radon is linked to an increased risk of lung cancer.

Radonitõkkeid are typically installed during construction or as a remediation measure in existing structures. The effectiveness of these barriers lies in their ability to create an impermeable layer between the building's interior and the underlying soil. Common materials used for radonitõkkeid include specialized membranes made of plastics like polyethylene, which are laid beneath concrete slabs or integrated into foundation walls. These membranes are designed to be continuous and well-sealed at all joints and penetrations to prevent radon gas from migrating upwards.

In addition to impermeable membranes, radonitõkkeid can also involve ventilation systems. Sub-slab depressurization systems are a common example. These systems use a fan to draw radon gas from beneath the building's foundation and vent it safely above the roofline. This creates a negative pressure under the slab, effectively pulling radon away from the building's interior. The design and installation of radonitõkkeid should adhere to relevant building codes and standards to ensure optimal performance and long-term protection against radon exposure. Regular testing of radon levels within a building is recommended to confirm the effectiveness of any installed radon mitigation measures.