CarlH
Member
I get air coming in from my sump pit whenever something in the house forces air outside such as a bathroom fan or the clothes dryer. My basement has no exits and therefore no exterior drains. The tiles should be completely below grade and covered with soil. My best guess for the source of incoming air is the gap between the garage floor and the foundation. I think there is a few feet deep of gravel under the garage floor and that air can get through the gap and then the gravel to the tiles and then from the tiles to the sump pit. I did caulk the gap between the garage floor where it meets the foundation, but that did not solve the problem. That leaves a few more possible places for air to come in such as the rest of the gap between the garage floor and the garage foundation, the gap between the driveway and the garage floor and a small area where the driveway meets up with the foundation.
It would be really great if I could pinpoint the source of the air leakage. Sealing the sump is not really an option at this point since I have a drain pan for a 2nd floor washing machine that runs to the sump. Sealing the sump with washing machine pan line in place would send the musty air up to the second floor.
Does anybody have any thoughts or suggestions on how to pinpoint the source of the leak?
It would be really great if I could pinpoint the source of the air leakage. Sealing the sump is not really an option at this point since I have a drain pan for a 2nd floor washing machine that runs to the sump. Sealing the sump with washing machine pan line in place would send the musty air up to the second floor.
Does anybody have any thoughts or suggestions on how to pinpoint the source of the leak?