Gutters · Service

Relining a gutter that cannot be taken down

Built-in, box and yankee gutters are part of the roof structure, not hung off it. Relining puts a new waterproof surface inside them. We match you with the specialists who do this work.

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In short

What is gutter relining?

Relining is the repair method for gutters that are built into the roof structure rather than hung from the fascia — box, built-in and yankee gutters, common on older and larger houses. Because the trough is part of the cornice, it cannot be unclipped and replaced; instead the failed surface is stripped and a new continuous liner is installed inside it. If your gutters are ordinary aluminium hung on the fascia, this is not your service — repair or replacement is.

Triggers

Signs you need gutter relining

Water appearing inside the house at the top of an exterior wall, or staining on a ceiling directly under the eave line
A gutter that is formed into the roof edge itself, so you cannot see a separate trough hanging below the shingles
An older or architecturally significant house where the cornice returns and the gutter are one continuous detail
A previous repair visible as a patchwork of asphalt compound, tar or mismatched flashing inside the trough
Soldered seams in a metal trough that have opened, or corrosion pinholes in an old metal lining
A flat-bottomed trough that holds standing water long after rain has stopped

Seeing something not on this list? Browse gutters problems by symptom →

The job

How gutter relining actually works

Confirm what kind of gutter you actually have

A built-in gutter sits within the roof structure and its outer face is part of the cornice; a box gutter runs in a valley between roof planes or behind a parapet. Both are structural. Hung gutter, however old, is not relined — it is replaced.

Watch for: A quote to reline conventional hung gutter. That is a repair method applied to the wrong problem, and it is more expensive than replacing the gutter outright.
Strip back to a sound substrate and find the real damage

Old lining, failed compound and accumulated patching come out. The important part is what is underneath — decades of leaking almost always means rot in the gutter boards, the rafter tails or the cornice framing, and none of it can be assessed until the trough is bare.

Watch for: A liner installed over soft wood or over an existing failed layer. A liner is only a surface; it moves with whatever it is bonded to, and rotten timber underneath will telegraph and split it.
Repair the carpentry and re-establish the fall

Rotten boards are cut out and replaced, and the fall toward the outlets is corrected while the trough is open. Many old built-in gutters were nearly flat to begin with and hold water permanently, which is what destroyed the original lining.

Watch for: A reline with the original flat profile reproduced exactly. If the trough held water before, it will hold water again, and standing water is what finishes a liner off.
Install the liner — membrane or metal

The two families are a fully adhered or torch-applied membrane, and a formed metal liner in copper, stainless or coated steel with soldered or lock seams. Membrane is faster and cheaper and reads as a modern repair; metal is the traditional and longer-lived answer and costs accordingly.

Watch for: Any liner terminated without a proper upstand and flashing under the roof covering. The head of the trough is where relining fails — water gets behind the liner and the leak reappears in exactly its old position.
Detail the outlets and test

The outlet is where a liner has to be dressed into a pipe, and it is the second most common failure point after the head. Once complete, the trough is flooded and watched, because there is no other way to prove a repair to a component that is inside the building envelope.

Watch for: No flood test. A built-in gutter leak reappears as water inside your house, and by then the ceiling has been redecorated.

Money

What does gutter relining cost?

Relining is specialist work and it is priced accordingly — by the linear foot, with carpentry repair usually a significant separate item and metal liners costing considerably more than membrane. On a historic house it can approach the cost of other major roof work. See the gutters cost guide for context.

See the full gutter relining cost guide — by material, size and region →

Straight answer

When gutter relining is the wrong call

Everyone else ranking for this is paid when you say yes. Here's when you shouldn't.

You have ordinary hung gutters. Relining is not a method for aluminium or vinyl gutter bolted to the fascia. Those get repaired or replaced, and either is far cheaper than a lining system.
The timber structure is extensively rotten. Once the gutter boards, the rafter tails and the cornice framing have gone, you are looking at reconstruction with a new lining as the final step, not at a relining job. Getting that reframed as what it is prevents an unpleasant mid-project conversation.
The roof covering above the gutter is due for replacement anyway. The liner has to be dressed under the roof covering at the head. Doing it now means disturbing new work later, or leaving the one detail that matters most untouched.
Nobody local does this work. Built-in gutter is a sheet-metal and restoration trade, and a general roofer improvising a lining out of roll material is where most of the worst examples come from. If you cannot find a specialist, wait for one rather than accepting the nearest willing bidder.
The house is listed, in a historic district, or subject to design review. Substituting a membrane for original metalwork can require approval, and doing it first and asking later is expensive. Check before specifying.
The leak has not been located. Water at the top of an exterior wall can come from the gutter, from failed flashing above it, or from the wall itself. Relining an intact gutter because the ceiling is stained is a costly way to not fix a problem.

Your options

Types of gutter relining

Gutter materials

Copper, stainless and coated steel behave very differently as liner materials.

Leaking joints and standing water

The symptom pages that help distinguish a lining failure from a hung-gutter fault.

Aluminium versus copper

Relevant to liner choice on a house where the original detail was metal.

Compare gutters options side by side →

Before you sign

What to check when hiring for gutter relining

How much of the gutter carpentry is included, and how is extra priced?

Rot is found once the trough is stripped and it is nearly always there. An agreed rate per foot beforehand prevents the worst mid-job conversation on this type of work.
How will the liner be terminated at the head, under the roof covering?

The head detail is the most common failure point. A specialist will describe an upstand and a flashing lap without being prompted.
Are you correcting the fall, or reproducing the existing profile?

Many original built-in gutters were close to flat and held water permanently. Rebuilding that faithfully rebuilds the cause of the failure.
Membrane or metal, and what is the expected service life of each here?

A real trade-off with a large price gap. You want the contractor to explain the choice rather than to present one option as the only method.
How many of these have you done, and can I see one?

This is a narrow specialism. On a general roofer's truck it is an occasional improvisation; on a restoration contractor's it is routine work.
Will you flood-test the finished trough before you leave?

A built-in gutter leak shows up as water inside the house. There is no acceptable substitute for proving it while the crew is still on site.

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Local pros

Gutter Relining near you

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Related work

Often done at the same time

Gutter Repair

For conventional hung gutters

Gutter Installation

The replacement route for hung systems

Gutter Cleaning

Built-in gutters need clearing more, not less

Downspout Installation

Outlets are where liners most often fail

All gutters services →

FAQ

Gutter Relining — questions people ask

Still have a question? Talk to our team →

What is a built-in or box gutter?

A gutter formed as part of the roof structure rather than hung off the fascia. On many older and larger houses the trough sits inside the cornice, or runs in a channel between two roof planes or behind a parapet, and its outer face is part of the architectural detail. Because it is inside the building envelope, when it fails the water usually appears inside the house rather than dripping onto the ground.

How is relining different from replacing gutters?

Replacement means taking the gutter down and putting a new one up, which is only possible when the gutter is a separate component hung from the building. A built-in gutter is part of the structure, so the trough stays and the waterproof surface within it is renewed. That makes relining as much a carpentry and sheet-metal job as a gutter job, and it is why the two are priced on entirely different scales.

Is a membrane liner as good as a metal one?

It depends what you are optimising for. A properly installed membrane is a legitimate, considerably cheaper repair that will serve for a long time. A soldered metal liner is the traditional method, generally lasts longer, and on a historic house may be the only option a design review will accept. The bigger determinant of either lasting is not the material — it is whether the fall was corrected and the head detail was executed properly.

How do I know if my gutter needs relining rather than repairing?

Start with the type. If you can see a trough hanging below the roof edge on brackets, it is a hung gutter and it gets repaired or replaced. If the gutter is formed into the roof edge itself and you cannot see a separate component, it is built in. The second signal is where the leak shows: staining at the top of an interior wall or on a ceiling near the eaves points to a built-in gutter, because a hung gutter that fails simply drips outside.

Can I reline a gutter myself?

Realistically, no. It is height work on a structural component that sits inside the building envelope, the two detailing points that decide success — the head upstand and the outlet — are precisely the awkward ones, and a failure appears as water inside your house rather than as a puddle in the garden. It is also a trade where the difference between a specialist and an improviser is very visible a few years later.