I had water in my floor vents after a heavy rain last summer. Have gotten to estimates on running ducts through ceiling. One was 5700 the other was 4500. The 5700 said they would pour cement through all the floor ducts throughout the house. The other one said they only fill the actual vents. Was wondering if putting cenemt trough the entire house was necessary and if I need to get additional estimates. These seem high to me but Im the one spending the money. Thanks Nell