The pores in concrete let in water vapor and their capillary action draws in water from the soil, which evaporates. High humidity promotes molds, mildew, biological contaminants, and a musty smell. Paint or surface sealers crack or peel and cannot stop dampness. Dehumidifiers consume lots of power and pull in more moisture through the concrete, speeding up its deterioration. RadonSeal reduces dampness in the whole house.
Moisture also carries dissolved radon indoors.
RadonSeal uses the concrete itself to stop radon by sealing even the microscopic pores deep inside concrete. It does not depend on the reliability of mechanical equipment or the power grid. RadonSeal saves hundreds of dollars on the initial cost of a fan radon mitigation system and much more on operating costs and maintenance. If a fan system is already installed, it will lower its energy losses and reduce the radon level further. By avoiding a noisy radon fan and unsightly piping, RadonSeal protects the resale value of the house.