How does radon move around?
In most soils radon travels only a few feet before decaying. Thus, the radon that gets into your home comes from the soil immediately around and underneath your house. In water, rocks, or other dense materials radon doesn’t even travel a few inches. Radon can move by diffusion ( concentration differences) or by advection (pressure driven). Radon travels into houses generally by a combination of diffusion and advection. Radon escapes from the ground into the atmosphere by diffusion.
