Question answered
How long do gutters last?
The short answer
A gutter lasts as long as its weakest part allows, and that depends on the material. Cast iron and heavy aluminium can outlast plastic when kept painted and cleared, while uPVC runs tend to fail at joints, brackets or through sun damage. Brackets and seals often go before the channel itself, which is why a repair is sometimes enough and a full replacement sometimes is not.
There is no single figure, because a gutter's life depends on its material, its brackets and how often it is cleared. This page goes through each material and what usually ends its service.
Why the material is only part of the answer
Ask how long a gutter lasts and the honest reply is that it depends on what you call the end. A channel can stay whole for decades while its joints split, its brackets rust or its fall slips, and the run then leaks or overflows long before the metal or plastic has gone.
Standing water is the common enemy. A gutter that holds a few centimetres of sludge because the fall has drifted is sitting in a bath all year, and every material suffers for it. Debris adds weight, and a heavy full channel pulls its own brackets out of the fascia.
Published guides give lifespans for roofline boards but rarely for gutters themselves, so be wary of any precise number. MyBuilder's guide, updated on 21 August 2026, puts typical replacement of fascias and soffits at 10 to 20 years, and gutters are usually renewed in the same job. That makes the roofline a fair stand-in for the whole run: when the boards go, the gutter nearly always goes with them.
For that reason we judge each part by condition, not by age alone. A twenty-year-old run with tight joints and a good fall can be left; a younger one that has been hung badly may not be worth saving. The wider gutters, soffits and fascias hub shows what each repair involves.
Plastic, aluminium and steel
uPVC is light, cheap to buy and does not rust. Its weak points are the rubber-sealed joints, which dry out and drip, and the plastic itself, which can turn brittle and bow in strong sun. Clips can crack, and an overfull run may drop out of its brackets.
Aluminium is stronger for its weight and comes in a wide range of colours. It can be run in lengths with few joints, which reduces leaks, and our page on seamless aluminium gutters explains how that works. Salt air can pit bare aluminium, so a factory finish matters.
Galvanised or coated steel resists dents but rusts if the coating is scratched, usually first at cut ends, bolt holes and joints. Each of these materials stays serviceable longest where the fall is right, the brackets are sound and the channel is flushed through every year.
Cast iron and the older runs
Cast iron is heavy, brittle and very durable when looked after. Many older houses still have their original cast iron runs, which is a good sign about the metal and a poor one about the paintwork. The usual failures are rust through the back where water sits, cracked sections after a knock or frost, and joints whose bolts and putty have perished.
The metal is worth keeping where it is sound, because a repaired iron run can have years to go. Repainting inside and out, resealing the joints and replacing a cracked length is often cheaper than a new set. Our guide to cast iron gutters covers when to repair and when to replace.
On a listed building or in a conservation area, check with the Adur & Worthing planning team before changing the material, since a different profile may need consent.
What salt air and shade do to a run
On the coast the sea adds salt to rain and spray. Metals suffer where coatings are thin or damaged, and the sheltered faces under the eaves never get washed by rain, so deposits stay put. HomeBuilding makes the same point about marine air and the boards under an overhang, which collect salt that rain cannot wash off.
Shaded north-facing runs grow moss and algae, which hold moisture against the back of the gutter. Sunny south-facing elevations punish plastic instead, drying and bowing it. Neither is a reason to avoid a material, but each argues for a different clearing and washing routine, and for a closer look at the elevation that gets the worst of the weather.
The boards behind the gutter matter just as much. A failing roofline will take a good gutter down with it, and the pages on uPVC fascia lifespan and mouldy soffits describe the signs to check.
Deciding between repair and renewal
If one joint drips or a bracket has slipped, a repair is the right job. If the fall has gone along most of a run, the back of the channel has rotted through, or the fascia behind is soft, a fresh run costs less in the end than repeated call-outs.
MyBuilder quotes a typical UK range of £30 to £70 per metre for guttering replacement. Length, height and the state of the roofline move the total, so ours is set after we have photographed the run and the boards, and it arrives in writing as one price.
When new gutters go up it is a good moment to choose colour as well. Our page on anthracite grey and black fascias looks at dark finishes, which can look sharp but show salt marks quickly.
Gutters in sea air
Do older gutters rust faster near the seafront?
Bare or thinly coated metal does tend to suffer where there is salt in the air, and the parts that rain never reaches are the worst. A sound finish, kept clean, slows it. We check bolt holes, cut ends and the back of the channel, where rust usually starts.
Will new gutters fix a damp patch under the eaves?
Only if the gutter is the cause. A damp eaves patch can also come from a slipped tile, a failed felt or a rotten fascia, which is why the survey follows the water to its origin before anyone suggests renewal. If the old run is sound, a new one would change nothing.
Tell us about your roof
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- A written quote with one total price
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