Plumbing vent flashings are notorious spots for roof leaks.
Replacing a roof vent pipe.
Look for rust holes or gaps around metal vents required for cast iron waste lines.
Existing pipe boot repair and preventative maintenance the perma boot is a gasket less two piece pipe boot repair system designed to permanently repair the most common type of roof leak the leak around the vent pipes that penetrate your roof.
What is a plumbing vent.
The plumber made the inside connections later and either didn t have a 3 in to 4 in.
This old house general contractor tom silva shows how to create a watertight seal around a vent pipe.
If you have a leak in the general area of a plumbing vent check the condition of the vent flashing.
Just as drain pipes remove water and waste from your home the plumbing vent pipe also known as a plumbing air vent removes gas and odors it also allows fresh air into the plumbing system to help water flow smoothly through the drain pipes however no water.
However our best guess is that the plumber stuck a 4 in.
Coupling handy or didn t want the hassle of making a proper connection.