A hole is drilled into the slab, to create a suction point (sometimes more than one suction point is needed). The radon gas is vented through a PVC pipe that is connected to the hole. The pipe can be installed through the house or outside. An airtight lid is used with all of our sump pump installations which keeps odors and humidity out while protecting your sump from debris from the basement floor. Rubber grommets around all pipes and wires help maintain the airtight lid and also help to keep all PVC pipes steady and quiet.