Adding trap and vent to existing washing machine drain ...
Mar 24, 2018· Current issue is the lack of a trap or vent on the washing machine drain in the basement. Sewer gases are definitely entering the house through the laundry drain. I've looked at the UPC, but am having trouble figuring out how to make them work in our situation. The main issue is that the basement is ~3ft below the grade of the crawl space where ...