If a test in your home or building reveals radon levels at or above the EPA corrective action level of 4.0pCi/L, remediation is recommended. Below you will find a description of the radon remediation methods that we most commonly use.
ERV / Ventilation
Ventilation
and Air Exchange are common methods of radon remediation typically used on
homes, condominiums, and offices that have high radon levels as a result
of emanation from building materials. Energy Recovery Ventilators
(ERV) are an effective ventilation system used on individual condominium
units, homes, and offices. Large HVAC conditioned ventilation systems
are used when remediating an entire commercial building. All
ventilation systems must operate continuously.
Active Soil Depressurization
The
primary method of reducing radon or Volatile Organic Compounds
(VOC's) is active soil depressurization. A fan and piping system is
used to draw enough air from the soil beneath a home or building and
exhaust it safely above the roof. This causes the air pressure in the
soil to be negative in comparison to the inside of the structure. This
negative pressure prevents soil gas from entering into the home or
building. Active soil depressurization systems can be used to reduce
radon in buildings built slab on grade, or with basements.
Crawlspace Membrane Depressurization System
This radon remediation system is used when the home or commercial building has a crawlspace. The crawlspace is encapsulated with a radon retarder membrane is used to cover the dirt in the entire crawlspace. The membrane runs up the walls and piers and is mechanically fastened and sealed with mastic to make the entire membrane gas tight. A PVC pipe that connects to an exterior blower and exhaust pipe is then installed under the gas tight membrane to reduce the radon level below the action level set by the US EPA.
ERV Remediation System
Active Soil Depressurization System
Encapsulated Crawlspace Membrane
Radon Testing Every residential and commercial building should be tested for high levels of radon. There are different devices that are used for short term and long term testing. See the examples below.
