Common Roof Leak Repairs: Vent Pipe Damage

Common Roof Leak Repairs: Vent Pipe Repairs

If you look at your home’s roof, you’re likely to see several vent pipes protruding from the flat surfaces. These vent pipes allow gases to safely exit your home. The gases originate in bathrooms and kitchens, travel up through the venting pipe, and exit the home where the pipe empties above the roof.

A properly ventilated roof creates a balance between air intake and air exhaust. Without proper attic ventilation, numerous problems with temperature and moisture can arise and the lifetime of your roof may be significantly shortened – one of them being ice dams (when ice builds up in your eaves and gutters, which can buckle or fall off under the weight, causing serious and expensive damage to your home).

Hence, maintaining a healthy vent pipe system is critical to your roof’s health – this may include ridge vents, soffit vents, gable vents and powered attic fans.

Yet, aside from skylights and chimneys, roof vents are one of the most common causes of roof leaks. It is then critical that when trying to pinpoint the source of a roof leak, you examine your vent pipes besides other penetrations in the roof.

Common Roof Leak Repairs: Vent Pipe Damage

Common Roof Leaks: Damaged vent pipe collars

Common Roof Leak Repairs: Vent Pipe Repairs

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. These collars consist of a metal base, generally made out of aluminum, and a rubber boot integrated into the top of the collar.

The collar’s job is to create a tight seal, keeping rainwater and debris from getting into your attic. Over time, through exposure to the sun and harsh weather, the rubber boot may wear out and deteriorate or split. Rusty and cracked vent pipe collars will allow the water to first pool around, then seep through the interior walls of your home causing great damage.

Deterioration of the underlying metal flashing and roof cement around vent pipes is also a common occurrence.

Bottom line: If the collar is cracked or damaged, it will need to be replaced.

Common Roof Leaks: Damaged pipes

Not all collar leaks are due to bad rubber boots, of course. Water can also enter your home if the roof vent itself has been disrupted. During a rainstorm, some rain will fall directly into the open end of the vent pipe. This rainwater makes its way down the vent and ultimately to your home’s sewer line. If there are leaks in the elbows or joints on this line, water can seep out and cause interior damage.

Bottom line: Water can also get in if the roof vent itself has been damaged.

Need Help With Roof Leak Repairs?

For problems like these, you’ll need the help of an roofing contractor experienced in roof leak repairs. Here’s what you can expect in terms of repairs:

  • A thorough inspection of your vent pipes (and often an entire roof) to evaluate the extend of the damage.
  • Removal of shingles above and around the pipe followed by the removal of the old flashing base.
  • Pipe collar and underlying flashing replacement.
  • Application of the roofing cement to the newly installed flashing to cover small openings and cracks.
  • Replacement or re-installment of surrounding shingles.

At All Roofing Solutionswe’re proud to have a skilled team dedicated to servicing all your roofing needs. We’re a family owned and operated Delaware & Pennsylvania roofing contractor with nearly 20 years of experience in replacing, repairing, and inspecting roofs for residential and commercial clients.

To schedule your free consultation, call 302-725-ROOF (7663) in Delaware or 610-551-ROOF (7663) in Pennsylvania. Contact us today and receive a discount of 15% off any roofing repair job.


  1. Posted December 12, 2017 at 7:06 am | Permalink

    It is really important to find a contractor who is specialized in your type of roof. Usually they are best only in one type. Some of them are perfect with metal but they are kind of bad with shake roofs. You should choose carefully. Best regards!

  2. Posted December 13, 2017 at 9:02 pm | Permalink

    It’s amazing how many people don’t invest in regular roof inspections and maintenance, especially since many roofing companies offer inspections for FREE! You can prevent problems like this and prevent further damage that incurs by simply hiring a contractor to inspect your roof once a year.

  3. Posted December 14, 2017 at 3:54 am | Permalink

    You are right, these exhaust pipes should also be well taken care of, apart from looking at shingles, gutters and flashings, they are an integral part of the larger roofing system.

  4. Posted December 14, 2017 at 9:43 am | Permalink

    Very nice article, yes a proper ventilation in attic region is important to protect the roof and regulate the temperature in the house.

  5. Posted December 17, 2017 at 11:57 pm | Permalink

    We are often seeing moisture damage in roofs, because people do not inspect their roofs regularly. By getting on problems quick, expensive roof repair can be avoided. A simple roof inspection 3 or 4 times a year, can save a homeowner thousands of dollars in repair. This post is a good reminder for individuals to do this.

  6. Posted December 18, 2017 at 1:12 am | Permalink

    This was very helpful! Also very true, a proper ventilation in attic region is important

  7. Posted December 27, 2017 at 7:22 pm | Permalink

    I appreciate the information on common roof leak repairs. I had no idea that vent pipes were of such vital importance to the health and longevity of your roof, I thought it was mainly just for stoves or something like that and that it wasn’t that big of a deal. My mom has seen some birds flying in and out of her vent pipe, I will be sure to share this information with her.

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