Roof Plumbing Vent to Short

Scott - looks like a homeowner installation! To my clients I call those "Uncle Bob" jobs. Looks like the sellers always wanted a laundry room near the bedrooms and this is that dream come true.

The vent should definitely terminate above the highest roof because even though it is for the washing machine sewer gases can still expel there. Is there a window nearby? Yummie... It is too short -your area gets ice and snow right?

On very old Virginia houses I see galvanized vents on the first floor servicing a bathroom or kitchen (plumbing installed long after the house was built) which run outside along the siding all the way to the roof. Your house looks a bit newer and there are likely codes there for prohibiting sort of installation.

Another thing I see is the lack o' proper counter flashing (looks like glued bricks), or at least the apparent silicone seal-'em-up job for that roof nearby. See the leaky areas? None of that is long lasting. Also, there is no rubber-sleeve flashing for the pipe, like a normal plumbing vent through the roof. They may have actually removed the roof to make this thing happen, rebuilding it in the fashion you see there.

The plumbing vent may be black iron, similar to the gas line, but it looks like cast iron. But here in Virginia nothing is allowed to touch a gas line like that. And, if it is a dissimilar metal, it will cause galvanic oxidation. NOT good on a gas line... The bricks appear chinked out, indicating that the gas line was another subsequent installation. Permitted? Servicing a furnace in a closet, or the dryer?

I just identified a bunch of problems with that installation.

I would say something about it being an apparently amateur installation, perhaps without a permit. That gives you wiggle room if in fact it was permitted (sooo unlikely). If there is no drip pan, which also needs to drain to the outside or the floor drain in the basement, you could mention that as another sign there was no permit obtained. You should recommend that the buyer request a copy of the permit from the seller.

In my area, if an installation like that is not permitted and there is a problem, insurance will not cover any damage created. That is something else you could bring up to your buyers. Your area may be different than mine, but I bet not... I would say to the buyers, "No tickie, no laundry..."

Whoohoo Boo Boo!