Gutter problems
Most gutter problems come down to four causes: the gutter is blocked, the gutter is pitched wrong, the fasteners or fascia have failed, or the system is simply too small for the roof. Each has a different fix and different cost, and only the last one justifies replacing the whole system.
Overflowing in moderate rain almost always means a blockage or a bad pitch. Clean it, then watch it. If it still pools in one spot on a dry day, the run is not sloping to the downspout. Overflowing only in downpours is different - that is a capacity problem, and capacity is a sizing question, not a cleaning question.
Sagging or pulling away from the house usually means the hangers have loosened or the fascia board behind them has softened from long-term water exposure. Re-screwing into rotten wood is a temporary fix that will fail again. The wood has to be sound first.
Leaking at a joint is a sealant or seam failure and is cheap to fix on an otherwise good gutter. Repeated seam failures across a sectional system are the point at which replacement with a seamless run starts making sense.
Ice in the gutter is usually a roof and attic problem, not a gutter problem. Warm air escaping into the attic melts snow, which refreezes at the cold eave. Replacing the gutter does not fix that; insulation and ventilation work does. Be very skeptical of anyone selling gutters or guards as an ice dam cure.
Choosing gutters a fix
The judgement calls that decide the bill, before anyone quotes you.
- Watch it rain before you buy The single most useful diagnostic is standing outside during a real storm and seeing exactly where water leaves the system.
- Check the pitch with a hose Run water into the far end of a clean gutter. It should move to the downspout without pooling.
- Push on the fascia Soft or spongy wood behind the gutter means carpentry before gutter work, no exceptions.
- Count your downspouts Chronic overflow at one corner often means too few downspouts, which is far cheaper to fix than a new system.
- Look at the ground Erosion trenches, a wet basement wall or a sunken spot next to the foundation tell you where the system is failing even when you cannot see the roofline.
- Treat ice separately If you get ice dams, get an attic insulation and ventilation assessment. That is the actual repair.
All gutters problems
Clogged Gutters
Overflowing Gutters
Pulling Away From Fascia
Foundation Water From Gutters
Ice Dams Related To Gutters
Leaking Joints
Improper Pitch
Missing Downspouts
Where these figures come from
Sources last checked
- This Old House - How To Size Gutters and Downspouts · retrieved 2026-07-25
- This Old House - Seamless Gutter Cost (2026 Guide) · retrieved 2026-07-25
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