You can’t seal radon out of your house, but you need to seal your house to keep radon out! Let me explain:
Radon is an inert gas and can find a way into your house regardless of how well it is sealed. Gaps, cracks, holes, and other open penetrations through the slab make it much easier for radon to enter a house, but sealing those will not stop it from entering, it will only slow it down (potentially). Sealing involved with an active sub-slab depressurization radon mitigation system is to improve the performance and efficiency of the radon mitigation system and reduce any energy penalty to the homeowner.
The main areas that require sealing as part of a radon mitigation system commonly include holes under furnaces and tubs/showers (more on this in another blog post), sump pits and lids, perimeter floor-to-wall joints, large floor cracks, cleanout and backflow prevention valve accesses, penetrations through the concrete slab (floor), and water main conduits. Sealing of theses areas is commonly done with concrete, spray foam, and polyurethane sealant depending on a number of factors.
As a C-NRPP (Canadian National Radon Proficiency Program) certified radon mitigation contractor and member of CARST (Canadian Association of Radon Scientists and Technicians) I take great care in searching out all areas that require sealing to ensure that the customized radon mitigation system I install will be as effective as possible. I design and build the radon mitigation system to draw the soil gas from below the basement slab while drawing minimal air out from the living area of the house. Proper sealing combined with diagnostic measurements allows me to accurately size your radon mitigation fan to provide maximum radon gas reduction with minimal noise and energy expenditure.
I offer free, no-obligation site visits in order to provide accurate quotes for radon mitigation systems. All radon mitigation systems are custom designed and built onsite with great care to taken to ensure fantastic results. I guarantee to have your post-mitigation level below 100bq with results below 25bq most common. Please click on the “Request A FREE Quote” button to book your appointment today.
