Gutter repair in London
A gutter has one job, which is to catch what comes off the roof and take it to a downpipe. When it stops doing that, the water goes down the wall instead — and a wall that has had water running down it all winter is where a lot of damp problems start. Ninja Plumbers clears blocked gutters, repairs leaking joints and sagging runs, and deals with the downpipes and the gullies they empty into.
- Gas Safe registered and fully insured
- DBS-checked engineers
- Emergency callout available 24/7
- Price agreed before work starts
- Workmanship guaranteed
Monday – Sunday, 7:00 AM – 10:00 PM · Out-of-hours emergency? Call 020 3576 5825
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What this includes
- Blocked and overflowing gutters cleared
- Leaking joints and split sections repaired
- Sagging, dropped or detached lengths refixed
- Downpipe blockages and broken downpipe sections
- Cast-iron guttering on Victorian and Edwardian properties
- Guttering checked where damp has appeared on the wall below
Worth knowing first
A little of this might mean you do not need to call us at all — we would still rather you knew it.
An overflowing gutter looks exactly like rising damp
This is the important one. A gutter that has been spilling down an external wall for a few months produces a wide patch of dark, stained, often mouldy brickwork and a matching damp patch inside — and it gets diagnosed as rising damp again and again. Our damp proofing page puts faulty guttering at the top of the list of causes of penetrating damp, and that matches what we actually find on site. Before anyone quotes you for a damp-proof course, go outside and look up at the gutter above the patch.
Clearing a gutter is not the same as repairing one
Scooping the leaves out fixes a gutter that is blocked. It does nothing for a gutter that has dropped at one end, has a split in a joint, or has come away from its brackets — that one will overflow again in the next heavy rain, leaves or no leaves. Whoever goes up should tell you which of the two you have got.
Cast iron can usually be repaired
Original cast-iron guttering on London terraces is often written off when it does not need to be. Joints can be taken apart, cleaned and re-sealed, brackets replaced, and lengths swapped section by section. It is heavier work and the fixings behind it need checking properly, but replacing the whole run in plastic is not the only option, and on a period frontage it is rarely the one people want.
The downpipe and what it empties into
Half of the gutters we get called to are not really the gutter at all. The downpipe is blocked, or the gully at the bottom is full, so the water backs up and comes over the top. That means checking the whole route down to the ground, not just the length of gutter you can see spilling.
What affects the price
Gutter work is usually quick once someone is up there safely, so the price has as much to do with reaching the gutter as with the repair itself. Height, material and the type of gutter all play a part.
Height and what is below
A single-storey extension can often be reached from a ladder. The front of a three-storey terrace, or a gutter above a basement lightwell or a conservatory roof, usually needs a tower or scaffold, and that access can cost more than the repair.
Plastic or cast iron
Plastic gutters clip together, and replacement parts are inexpensive and quick to fit. Cast-iron gutters are heavy, their bolts are often rusted solid, and replacement sections have to match the existing profile, so each repair takes longer.
Clearing, or refixing
Clearing out leaves and moss is the smaller job. A sagging run needs new brackets and the fall reset, and if the fascia board behind is rotten, the brackets have nothing solid to fix to until it is dealt with.
Valley and parapet gutters
Many London terraces have a valley gutter hidden between two roof slopes, draining out through the back parapet. Reaching it means going over the roof, and if its lead or felt lining has failed, that is roofing work, and we will tell you so.
The price is agreed before any work starts. We take card and cash.
Common questions
Can a damp patch on my wall really be caused by a gutter?
Very commonly, yes. Water running down brickwork for weeks soaks in and shows up inside, and it produces the stained patch people take for rising damp. It is the first thing worth ruling out, and our damp survey page covers how the cause is confirmed.
How often should gutters be cleared?
Once a year suits most houses, and late autumn is the sensible time — after the leaves have come down. Properties under London plane trees, or with a flat roof collecting debris, often need looking at more than that.
Do cast-iron gutters have to be replaced?
Not usually. Joints can be re-sealed, brackets renewed and individual sections swapped. Replacement makes sense where the metal itself has corroded through along the run, and we will tell you which of those you are looking at.
How do you reach the gutter on a terraced house?
With the right access for the height and the position — that varies with the property, the number of storeys and whether the run is at the front or over the back. We look at access when we quote, because it is part of what the job takes.
Should I tell my neighbours before the gutter is repaired?
It is worth a word. On a terrace the gutter often runs straight on from one house to the next, and the joint at the boundary is a common leak, so fixing only your half may not stop the overflow. Access can also involve their side: a ladder in their front area, or a tower on shared ground. Sorting it out together can mean one visit instead of two.
Are gutter guards worth fitting?
They help in some places and not others. Under heavy leaf fall, a guard keeps the bulk of the leaves out and stretches the time between clearances. But fine debris — moss from the roof, seed from plane trees, silt — still gets through or builds up on top, and a guarded gutter is fiddlier to clear when it does need it. They reduce maintenance rather than remove it.
More drainage work we take on
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Drain Unblocking
Sinks, toilets and outside drains cleared with proper equipment, not a bottle of chemicals.
More on Drain Unblocking -
Blocked Toilet
A toilet that will not flush away, or one that keeps blocking. Cleared, with the cause explained.
More on Blocked Toilet -
CCTV Drain Surveys
A camera down the drain shows what is actually wrong, rather than guessing from what keeps happening above ground.
More on CCTV Drain Surveys -
Drain Repairs
A drain that is actually broken, not just blocked — repaired by digging it up or, where the run allows, without digging at all.
More on Drain Repairs -
Surface Water Drainage
Rainwater with nowhere to go — standing water on patios, paths and gardens, given somewhere to drain.
More on Surface Water Drainage
Need gutter repair in London?
Describe the problem and give us your area, and we’ll tell you the price before anyone starts work.