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How to Identify Vent Pipe Leaks on Your Roof

Pipes and vents that extend through the roof deck are some of the most vulnerable areas of any roof. These are known as penetrations, and they are the perfect spots for leaks to form.

Consequently, reducing the possibility of leaks at roof-mounted plumbing vent pipes is essential, and should only be intalled by a qualified roofing contractor, using only the right materials and techniques.

Here’s a look at the potential causes of these roof vent pipe leaks, how to spot them, and the crucial role that high-quality materials and installation play in keeping your house leak-free.

What Leads to a Rooftop Plumbing Vent Pipe Leak?

The plumbing vent pipe collar or flashing that surrounds the pipe to shield the connection between the roof and the penetration is typically what results in roof vent pipe leaks. When exposed to the environment or when struck by debris, these collars or flashings may suffer damage or degradation.

When the flashings are assembled improperly or not at all, they are particularly susceptible to leaks. We’ve seen some roofing contractors simply trim the shingles to fit around the vent pipe and caulk the seam. When exposed to sunlight or changing temperatures, this can swiftly deteriorate or crack. Your home will be better protected from water incursion if quality, long-lasting flashing materials are used and placed properly.

How to Spot a Leaking Plumbing Vent Pipe on Your Roof

There are a number of symptoms that could point to a leak. Call a qualified roofer to evaluate your roof if you notice any signs of a water leak inside your house. Water moves, making it challenging to pinpoint the exact location of the leak. Experts have years of experience identifying leaks, and can help you track down the source, as well as repair the compromised materials.

Roof vent pipe leak indicators include:

Chandelier Stains
On your ceiling, keep an eye out for any dark areas because leaks typically cause these. The white ceiling of your finished attic will make stains stand out clearly. If your attic is unfinished, you might not discover them until you’re using the area for other tasks. In order to avoid stains, it is a good idea to check your roof and attic at least twice a year.

The Attic Has Mold
Check your attic for mold development on a regular basis in addition to looking for stains. Moisture, which is unhealthy to have in your home, is an indication of mold. Once the leak is fixed, you’ll need specific treatment to get rid of it.

Metal in Your Home May Have Rust
Rust on metal components inside your house is another indicator of moisture incursion and may be an indication of a leak.

Shingles or seals around vent pipes missing or damaged
When your roof is evaluated, the shingles surrounding the plumbing vent pipes may be missing or cracked, or the flashing and seals may have been damaged or deteriorated.

Dripping Areas on Your Roof
Check for soft or damp areas by feeling around the roof deck or attic ceiling. Both are signs that a leak might exist.

The Importance of Quality Products and Proper Installation
It’s crucial to use the right goods and install them properly.

Check to be sure your installers are using the proper vent pipe collar or flashing for your roofing system and slope. Choose a reputable roofer to install it and make sure they’re using ones made to be used with the shingle type and material you’ve chosen.

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