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Radon Systems


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Types of Radon Mitigation Systems

Radon Mitigation System
Outside Installation

Active Soil Depressurization Types:

SUB-SLAB DEPRESSUIZATION: Suction created in a pit excavated under the slab.

DRAIN TILE DEPRESSURIZATION: Suction created in or next to drain tile - extends under the floor via drain tile or aggregate.

SUMP DEPRESSURIZATION: Suction created in groundwater drainage sump - extends under floor via drain tile or aggregate.

BASEBOARD DEPRESSURIZATION (NOT COMMON): Suction crated in wall - floor joint and, if any, adjacent masonry wall.

SUB-MEMBRANE DEPRESSURIZATION: Suction created under a membrane such as plastic or rubber, placed on exposed soil and or rock (Crawlspace).

BLOCK WALL DEPRESSURIZATION (NOT COMMON): Suction created in concrete block wall.

Other Methods to Discourage Radon Entry

SUBSLAB PRESSURIZATION: Used when sub slab is permeable. These systems will increase heating costs. The fan is used in reverse - blowing air into the sub floor. First floor air is blown into the lower level sub floor. (Not used often).

BASEMENT PRESSURIZATION: Pressurization of basement level - keeping the radon gas from entry to home. (Not often used)

SEALING THE CRACKS IN BASEMENT FLOOR: Using caulking to prevent radon from entry to basement. Also involves sealing all sump crocks.

INSTALLING A HEAT RECOVERY VENTILATORS (HRV's): Exchanging build air (outdoor/indoor air). This is done by diluting the indoor air supply with outdoor air.