On to the Radon issue – Excellent results with Aeroseal! From 5 + to a .4. Before sealing like we discussed, I had warm air coming out of the sump basket with the furnace running. Even with the furnace running, it is still pulling air in now. From the suction of the radon mitigation system – which it couldn’t do before because of the leaking ductwork and the mitigation system being overpowered by the furnace. This was a perfect application for Aeroseal! Thank you!