Discovering a sag in your roof
Discovering an unexpected sag or pitch across all sides of an old home's roof during a replacement process.
Overview
People affected2 accounts across 2 forums
Workarounds found6 items attempted
Community agreement4 total upvotes
What the numbers show
Counted from the threads quoted below. How we count
- People have been saying this in most months since September 2026.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
6 items+ Contribute
Found another way around this?
Share your steps and trade-offs so fellow engineers don't have to reinvent the wheel. No account required.
- 1Hiring a structural engineer to inspect the roof framingDid this help you?
- 2Checking underlying attic lumber for rot or structural integrityDid this help you?
- 3Considering selling the houseDid this help you?
- 4Using a straight edge or a string line along the ridge to check for dropping.Did this help you?
- 5Looking for abnormal signs or changes inside the loft.Did this help you?
- 6Posting photos online to ask for advice from experienced roofers.Did this help you?
Tried another approach not listed above?+ Share your workaround ↑
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
r/HomeMaintenance1 person · September 2026
Where this came up
People with this problem also raised
- 11Unexplained hole in attic roof decking
- 32How to find where a roof leak is actually coming from
- 4Why is the plywood roof decking sagging on my new house?
- 2Roof or gutter contractors missed rotting fascia board
- 5Is a gap in roof sheathing at the ridge okay before shingling?
- 4Why do spray foam roofs leak from day one?