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Fix a gutter that sags

We'll reattach hangers, add new ones, and fix the slope—or tell you when to call a gutter professional.

Troubleshooting · Home plumbing
30–60 min
What you'll need
  • Gutter hangers
  • Screws (longer if needed)
  • Drill or screwdriver
  • Ladder
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Steps

Goal: Reattach loose hangers, add new ones, and fix the slope.

  • Clean the gutter. Inspect hangers.
  • Reattach loose hangers. Add hangers where there are gaps (every 2–3 feet).
  • Good: Gutter supported. Bad: Fascia may be rotten—call a contractor.

Reattach hangers

Goal: Secure the gutter to the fascia.

  • Use longer screws or move to solid wood. Add hangers where missing.
  • Good: No more sag. Bad: Call a gutter professional.

When to get help

Call a gutter professional or contractor if:

  • The fascia is rotten and will not hold screws.
  • The gutter is damaged or bent.

Use a sturdy ladder and have a spotter.

Verification

  • The gutter is level and supported.
  • Water flows toward the downspout.

Escalation ladder

Work from the device outward. Stop when the problem is fixed.

  1. Clean gutter Remove debris to reduce weight.
  2. Reattach hangers Secure loose hangers with screws.
  3. Add hangers Add hangers where there are gaps.
  4. Call gutter pro Fascia rotten, gutter damaged—call a gutter professional or contractor.

What to capture if you need help

Before calling support or posting for help, have these ready. It speeds everything up.

  • Hanger condition
  • Hanger spacing
  • Fascia condition
  • Steps already tried

Are the hangers loose or missing?

Hangers should be every 2–3 feet. Loose or missing hangers cause sag.

Clean the gutter. Inspect hangers. Loose: reattach with longer screws or move to solid fascia. Missing: add new hangers. Fascia soft: screws will not hold—call a contractor. Gutter damaged: call a gutter professional.

Yes No

You can change your answer later.

Did reattaching or adding hangers fix the sag?

Reattach loose hangers. Add hangers where there are gaps.

Reattach loose hangers. Add hangers every 2–3 feet. Ensure slope toward downspout. Good: gutter is level and supported. Bad: fascia may be rotten—call a contractor.

Yes No

You can change your answer later.

Gutter is supported

The gutter is level and supported. Check slope. Water should flow toward the downspout.

Done

Call a gutter professional

Call a gutter professional or contractor if: the fascia is rotten and will not hold screws, the gutter is damaged, or you are not comfortable working on a ladder. Use a spotter when working on gutters.

Done

Reviewed by Blackbox Atlas

Frequently asked questions

Why would a gutter sag?
Common causes: loose or missing hangers, too few hangers, heavy debris in the gutter, or rotten fascia. Hangers should be spaced every 2–3 feet.
Can I fix a sagging gutter myself?
Yes. You can reattach loose hangers and add new hangers. Clean the gutter first to reduce weight. If the fascia is rotten or the gutter is damaged, call a gutter professional or contractor.
When should I call a gutter professional?
Call a gutter professional if: the fascia is rotten and will not hold screws, the gutter is damaged or bent, or the work is high and you are not comfortable. Fascia repair may need a contractor.

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