For example in a lot of cases it could be from around the roof vent pipes.
Roof leak near vent pipe.
Roof vent pipes are common areas for roof leaks.
Leaking roof vent pipe.
Use a pocketknife to scrape rough edges and sharp points from upper end of plastic vent pipe.
You re in luck if you re able to pinpoint the source.
Steps for fixing a leaking rooftop vent pipe.
Roofing leaks will require the carpentry and roofing skills and materials while plumbing leaks will require the skills and materials used by a professional plumber.
First minimize further damage whatever the cause of the ceiling leak when you first notice discoloration or the first signs of dripping water be aware that there may be much more hidden water spreading over the drywall above.
Oftentimes when there is a roof leak the cause might be the pipe collar or vent stacks.
There are many possible parts of the roof potentially leaking but one of the most common ones is the area around the roof vent.
Cut away the old caulk from around the vent pipe.
This is not to say that it s not going to be a problem.
The collar s job is to create a tight seal keeping rainwater and debris from getting into your attic.
When your roof was installed each vent pipe received a flexible boot to seal water around the round surface of the vent pipe.
The leaking may first be seen in the attic but if you don t catch it right away you may see water coming into the house dripping on the floor.
Roof vent pipes from plumbing or exhaust vents penetrate the roof and are usually sealed using a collar style flashing made out of a flexible material like epdm rubber or flexible pvc.
Vent pipe leaks during heavy rain can occur if you have cracks in your vent pipe boot or flashing.
Dealing with a leak around the roof vent pipes can be a huge problem as well.
These collars consist of a metal base generally made out of aluminum and a rubber boot integrated into the top of the collar.
These are the pipes that vent from different areas of your home.
The roof vent pipe is installed cut through the roof and around the pipe attached to the roof is surrounded with rubber boot as insulation for the gap between the pipe and roof.
These boots vary in quality flexibility and longevity.
In this video this old house general contractor tom silva shows how to create a watertight seal around a vent pipe.
Typically vent pipe leaks occur at the collar surrounding the base of the vent pipe where it breaks through the surface of the roofing material.
This is especially true if you can t seem to pinpoint the source of the leak.