How to Repair a Sagging Gutter

Fix sagging gutters by checking and tightening loose hangers, replacing damaged brackets, or adding extra support where the gutter has pulled away from the fascia board.

Spot the sag first. Walk around your home and identify where the gutter is sagging. Look for loose hangers, bent brackets, or sections pulling away from the house. Measure the affected areas and purchase replacement hangers or brackets if needed. Most sagging occurs at joints or where hangers have loosened over time.
Plant your ladder right. Position your extension ladder on solid, level ground. The base should be one foot away from the house for every four feet of ladder height. Have someone spot you if possible, and never lean too far to either side while working.
Empty it out completely. Remove leaves, twigs, and any standing water from the sagging section. This reduces weight and lets you see the problem clearly. Use a small trowel or your hands, then rinse with a garden hose if needed.
Crank down all fasteners. Check each hanger or bracket supporting the sagging area. Use a drill or screwdriver to tighten screws that have worked loose. If screws spin freely, the holes have enlarged and you'll need longer screws or toggle bolts to bite into solid wood.
Install new support hangers. Remove any bent or broken hangers completely. Install new hangers every 24 to 30 inches along the affected section. Drive screws into the fascia board or rafter ends, not just the fascia covering. Make sure each hanger slopes slightly toward the downspout.
Reinforce weak spots early. For gutters that consistently sag, install additional support brackets between existing ones. Consider upgrading to heavy-duty hangers if you live in an area with heavy snow loads or frequent storms.
Confirm water flows freely. Run water through the gutter section with your garden hose. Water should flow smoothly toward the downspout without pooling. Make small adjustments to the slope if needed by slightly loosening and repositioning hangers.