Radon Gas Mitigation
Radon Gas Mitigation
According to the latest EPA's Assessment of Risks from Radon in Homes in the United States, epidemiological evidence shows a clear link between lung cancer and high concentrations of radon, with 21,000 radon-induced U.S. lung cancer deaths per year—second only to cigarette smoking. www.epa.gov/radon/health-risk-radon The map at right is based on the EPA's average in home radon levels found. Individual homes may be higher or lower.
Zone 1 -Greater than 4 pCi/L
Zone 2 -Between 2 and 4 pCi/L
Zone 3 -Less than 2 pCi/L
In home radon levels are a serious concern. Radon exposure is the number one cause of lung cancer among non-smokers. The EPAs has set an "action level" of 4 piC/L, but even that level is still many times higher than the allowed radiation exposure from any other source. There is no safe level of radon exposure. It is our goal to reduce radon levels as much as absolutely possible, in every home.
According to the EPA, the most effective and reliable technique for radon reduction, is Active Sub-slab Depressurization. Reductions of up to 99% can be achieved. We specialize in the Sub-Slab Depressurization method. It offers a permanent and effective solution in which we can guarantee the results.
The goal of Sub-slab Depressurization, is to provide a constant vacuum pressure under the basement slab. This is accomplished through the use of a specialized vacuum fan connected to one or more suction points. The negative pressure created under the slab can dramatically reduce soil gas intrusion. The fan can be installed in an attic space or on the exterior of the home. The fan cannot be installed in the living space and the venting must extend 12 inches above the roof line.
In order for the system to be effective, suction must be dispersed under as much of the slab as possible. If there is a good coarse base such as crushed gravel or course sand, a single suction point may be adequate. If the soil is tight we may need two or more. If there is an existing drain tile system, we can tie directly into that system. Sub-slab depressurization is especially effective when retrofitted with an existing drain tile system.
If you have had unaddressed basement water seepage issues we can install a radon mitigation system along with an interior drain tile system at a discounted rate.
In most cases a Sub-slab Depressurization system can be installed quickly and at a reasonable cost. Not only will it reduce radon levels, but it can reduce water vapor intrusion possibly eliminating the need for dehumidifiers. It may lower other soil gasses as well, such as: methane, hydrocarbons and other contaminants.
Unless you've previously tested, we will need to establish your base radon levels. You can order a simple DIY test kit here.
If you have any more questions or concerns about radon, please visit the EPA's website. A good place to start, is by reading, "A Citizen's Guide to Radon."
Note: Radon testing and disclosure, are already required for home sales in many areas of the U.S. Even in areas where it is not yet required, many lenders will insist on it for approval of financing.