![]() ![]() Use a Silicone seal so that you can occasionally open the sump pit in case the sump pump malfunctions. In this type of mitigation system, the sump pump has to be sealed off. The radon mitigation system will work without interfering with the working of the sump pump. So if your basement has a sump pit, you can connect the radon pipe to it. A sump pit also acts as a collection point of radon. A sump pit and pump prevent the basement from flooding. As you know, a sump pit is used to collect water in areas where the water table is high. ![]() Just like in the sub-slab depressurization system, this outlet of the radon fan is connected to a vent pipe that run to the top of the roofline.Ī Sump hole suction Radon mitigation systemĪs you can see from the image above, the bottom part of the radon pipe is connected to a sump pit in the basement. This pipe is then run to the outside where it is connected to a radon fan. The bottom part of the radon pipe is connected to this hole. So, in a drain-tile suction system, a hole is drilled into the drain tile. So it makes sense to absorb the gas from drain tiles instead of making a hole in the foundation. Since a drain tile system is basically a wide hole that runs alongs the walls of the basement, it collects lots of radon gas. This method works only if your basement has an interior drain tile system. But instead of creating a suction pit for the radon through the foundation slab, the bottom of the radon pipe is connected to the drain tile system of your basement. Just like the sub-slab depressurization system, it uses a radon fan and vent pipings to remove radon from the soil. Drain tile suction mitigation systemĭrain tile suction is the second type of mitigation system used in houses with high radon levels. Depending on the size of the basement and the power of the fan installed, this system can reduce radon levels by 50 to 99%. When the fan starts running, it sucks the radon-filled air from the pit and vents it above the roofline. The larger the surface area of the pit, the more radon gas it can collect.Ī Sub-slab depressurization radon mitgation system This pit creates a path of least resistance to collect the radon gas. ![]() The soil around the bottom end of the PVC pipe is removed, creating a pit. In such cases, the radon fan is installed in the attic of the house. The pipe can also go through the house and vent to the roof through the attic. A radon fan is installed on this pipe, on the outside of the house. The other end of the pipe is routed to the house’s exterior and, from there, to the top of the roofline. The setup of this system involves a PVC pipe, usually of 4-inch diameter, inserted through the foundation into the soil beneath. This system depressurizes the underside of the basement or the slab-on-grade foundation preventing Radon from entering the house. In subslab depressurization method, a radon fan is used to suck the air out of the soil. This method is very effective in reducing radon levels. Which type of mitigation system is the best?Īlso known as Active sub-slab suction, this is the most popular radon mitigation method. ![]()
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