A gutter sags when its hangers pull loose, when they are spaced too far apart, or when the fascia they screw into has gone soft. The weight of water and debris then pulls the run out of line, so it no longer drains to the outlet. The sag is the symptom, and the fix depends on which cause is behind it.
Gutter Answers connects you with licensed local companies. We are not a contractor and do not perform the work ourselves.
You restore the slope and the support, in that order.
For the wider set of gutter faults, see how gutter problems start.
A small, steady fall toward the outlet is enough, and consistency matters more than steepness.
| Point to check | What good looks like |
|---|---|
| Fall toward the outlet | A slight, even drop along the run |
| Hanger spacing | Close enough to hold the line loaded |
| Standing water | None left sitting after rain |
| Fascia behind | Sound wood that holds a screw |
A run with no fall holds water, which is the weight that starts the next sag.
When new hangers will not bite, or pull out again within weeks, the board behind the gutter has failed and no amount of rehanging will hold. That is carpentry before it is gutter work.
For what a fresh run and sound fascia cost, see what drives a gutter quote.
Loose or too widely spaced hangers, or soft fascia behind the gutter. The weight of water and debris then pulls the run out of line.
Often yes, by emptying it, adding hangers and resetting the slope. If the fascia is soft, the fix becomes carpentry and is better left to a pro.
A slight, even fall toward the outlet is enough. Consistency matters more than steepness, so no water should sit in the run after rain.
Usually because the fascia has failed and will not hold a fastener. New hangers keep pulling out, so the board itself needs replacing first.
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