Why is my new roof bulging?
Prominent bulging can suddenly appear on a new roof just months after installation. Homeowners are left fearing that the only fix is a complete tear-off and redo of the affected area. Resolving the issue stalls when even the roofing company investigating the claim cannot identify what is causing it.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
Found another way around this?
Share your steps and trade-offs so fellow engineers don't have to reinvent the wheel. No account required.
- 1Using cement-coated ring shank nails for sheathingDid this help you?
- 2Checking for ventilation and moisture issuesDid this help you?
- 3Contacting the roofer for a warranty replacementDid this help you?
- 4Waiting for the changing seasons or cooler weather to see if the roof settles on its own.Did this help you?
- 5Contacting the original roofing contractor to come back and inspect the work.Did this help you?
- 6Seeking second opinions from online forums or independent inspectors to diagnose the root cause.Did this help you?
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“Roof on new home build that was put on 6 months ago. Didn’t look like this a month ago. Cause?”source ↗
“The problem is, as you can see, the bulging - which seems vastly more prominent in the front upper roof pictured.”source ↗
“I can't imagine a fix other than a compete tear-off and redo of the front.”source ↗
“I received a voice mail from someone at the company assuring me he was on the case......BUT, he stated that he didn't know what seems to be causing it.”source ↗
Where this came up
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