Structure of the Vent System Every toilet and drain in a house is connected to its own vent pipe. These connect to a larger pipe—usually three or four inches in diameter—that extends vertically through the roof, known as a vent stack. In most houses, this pipe extends vertically all the...
If they are ever suspected to be clogged or disconnected below grade, they should be redirected to discharge at least five (5) feet from the building. Foundation leakage adjacent to a downspout is an indication of a problem below grade. * Repair: Missing shingles/tabs were observed and ...