Round Rock, Texas roof inspection example showing a failed vent pipe boot.
The rubber seal around the plumbing vent pipe has cracked from heat and UV exposure. Once that seal fails, water can enter the roof system and eventually reach the attic.
What makes this example notable is that the roof is only about five years old. It appears the vent flashing may have been reused during the previous roof replacement, which can lead to earlier failures like this.
Homeowner tip: If your roof has been replaced within the last several years, it may be worth taking a quick look at the vent pipes on your roof. Cracking rubber around those pipes is one of the most common leak points we find during inspections across Central Texas.
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https://www.theroofshepherd.com