How Does Barometric Pressure Make Radon Levels Go Down?
Principle Radon commonly enters a house’s basement due to air pressure differences in the home. Many homes have an inside air pressure that is significantly lower than the outside barometric pressure. This draws radon out of the soil toward the low pressure area, just as a vacuum draws particles. This pressure draw is further complicated by cracks and pores in the base of a house. If these small entrances are present, radon gas can enter easily. Application The air pressure difference that causes radon to be drawn into a basement can also be used to keep the gas out. By reversing the pressure difference and keeping home barometric pressure higher than the pressure outside, radon cannot enter. Usually, all possible air leaks are located and sealed. This lowers the amount of pressure difference needed to keep radon out. Exhaust fans and air circulation systems are used to maintain air pressure inside a building. These can be linked to an air sensor, which measures the difference between
