I just had a home owner that did all his own plumbing. Looked like hell. He had the VTR cut and hanging in the attic. The guy went on a business trip. The wife had the roofers in. The roofers shoved the pipe into the attic, and closed the roof. The tenants so loved the smell. If he only made the last connection he would have saved him self a tun of trouble. The tenants called the the board of health. That was the worst smelling place I have been in.