[1royal24]

My washer and dryer is upstairs along the hallway in a laundry closet. My
Drain line from the washer runs down through the walls to the drain under
The house. My problem is, there is a leak somewhere in the drain between
The second and first floor in the walls and its coming out on the sill under the house.
I would like to know how to replace that drain line without tearing my walls or floors up?
Please help. Thanking you in advance.

[ballengerb1]

If your walls are that wet inside they must be opened anyway and the drywall replaced. Hard to repair or replace a drain pipe inside an existing wall cavity.