Gutters leak in a few classic ways. Most are simple to identify and simple to fix. Here’s what’s going on and what’s usually needed.
The five most common gutter problems
1. Failed joint
The seal between two gutter sections has given up. Symptoms: water dripping from the joint between sections of guttering, usually visible from the ground as a streak of algae or wet staining down the wall below.
Fix: usually straightforward — separate the joint, clean both surfaces, reseat with a new rubber gasket (modern uPVC) or new mastic (cast iron). Half an hour to an hour.
2. Blocked downpipe
Leaves, moss, the odd tennis ball. Symptoms: gutter overflowing at the corner near the blocked downpipe, water cascading down the wall.
Fix: clear the blockage. Often easy from ground level with a drain rod or pressure hose. Sometimes needs the downpipe taken off at the top to clear.
3. Sagging gutter
The gutter is no longer sloping correctly towards the downpipe, usually because a bracket has come loose or the timber fascia behind has rotted. Symptoms: water pooling in a section of guttering that should be draining, visible sag in the line of the gutter.
Fix: replace the failed bracket and refix the gutter to the correct fall. If the fascia is rotten, that’s a bigger job — the fascia boards need replacing and the gutter re-fixing.
4. Cracked or holed gutter
Usually from impact damage (a ladder leaned against it, a ball, a falling branch) or from age (cast iron rusts through, uPVC gets brittle and cracks). Symptoms: water streaming from the damaged section, staining down the wall.
Fix: for a single hole, often patchable. For multiple holes or a long crack, usually a section replacement.
5. Inadequate capacity
The gutters are too small for the roof area, or there aren’t enough downpipes. Symptoms: gutters overflowing in heavy rain even when they’re clean and unblocked, water cascading over the front edge.
Fix: usually means upsizing the gutters or adding more downpipes. Bigger job but the only real answer.
What’s normal vs. what’s a problem
Normal: a few drips during very heavy rain, occasional small overflow at a corner, water marks on the wall below the gutter that have been there for years.
A problem: consistent dripping during normal rain, water cascading over the front of the gutter, water marks on the wall that are getting worse, water getting into the soffit or behind the fascia.
If you’ve only got drips in heavy rain and the wall isn’t getting worse, it’s probably not urgent. If the wall is visibly wet during normal rain, something needs doing.
What you can check from the ground
You don’t need to get on a ladder. Walk around the house after a rain shower and look up:
- Streaks down the wall below the gutter — usually means a joint is leaking
- Water cascading over the front of the gutter — usually means the gutter is blocked or sagging
- Visible sag in the gutter line — usually means a bracket has failed or the fascia has moved
- Green staining — usually means the gutter has been leaking for a while
- Plants growing out of the gutter — gutter hasn’t been cleaned in a long time, possibly blocked
Note what you see and where, and we can usually figure out what’s going on from a photo.
What you can do yourself (and what you shouldn’t)
Safe DIY:
- Clear leaves from gutters (with proper ladder safety)
- Clear downpipe blockages from ground level
- Trim back overhanging branches that drop debris into the gutter
Not safe DIY:
- Working at height without proper equipment
- Working on cast iron gutters (heavy, can fail catastrophically)
- Anything involving the fascia or soffit boards
- Replacing gutter sections — usually needs two people and proper fixings
The honest truth: most gutter repairs are quick and not expensive when done by a roofer. The savings from DIY are small and the injury risk is real.
What the repair typically costs
For most simple gutter issues:
- Reseat a failed joint: quick job, usually charged as a minimum visit
- Replace a single gutter section: half-day to a day
- Replace all the guttering on a typical Bath house: one to two days
We’re not publishing specific numbers because every job is different, but gutter work is generally one of the more affordable roofing jobs.
When gutter problems indicate something bigger
A few signs that the gutter problem is a symptom of a bigger issue:
- The fascia boards behind the gutter are rotten. The gutter may look fine but the timber it’s fixed to is failing. Usually means the gutter needs to come off, the fascia needs replacing, and the gutter goes back on.
- Water is getting into the soffit. The soffit is the board under the fascia. Water in there can rot the rafter ends and damage the roof structure.
- The wall below the gutter is saturated. Long-term leakage can damage the wall plaster inside, particularly on older Bath properties with lime plaster.
If any of those apply, the gutter job turns into a bigger repair. Worth catching early.
If you’ve got a gutter problem and want a quick opinion on whether it’s a small job or something bigger, get in touch. Photos are usually enough for us to tell.
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