


What could this pipe be?
Purchased a house built in 1995 recently in Eastern NC and I noticed a bad patch job in the laundry room. Behind a thin layer of mud and drywall mesh, this 8” length of flex duct (1st photo)duct taped to a 3” PVC pipe ( photo 2 taken looking down pvc pipe)Appeared! PVC pipe goes down into the slab and appears to head toward the master bath. This laundry room sits directly behind the master bath toilet.
It looked dry inside it and I did NOT catch a wiff of sewer gas coming out of it.
Maybe a Dryer vent I thought but a dryer vent wouldn’t go into the slab… and the current dryer vents to a different wall.
What could it be?