Greater London · England

Erith Gutter Sealing

Professional gutter sealing in and around Erith, with old sealant always removed completely and a 12-month guarantee.

  • Wet patches on the wall under a gutter joint
  • Rain getting in around a garage door
  • Gaps along fascia and soffit joints

Book gutter sealing in Erith

How we handle gutter sealing in Erith

Many dripping gutters are just a failed joint or end cap. We clean out the joint, dry it and reseal it using a gutter sealant. If the gutter is broken or sagging, we will tell you. If you are dealing with damp on an inside wall under a dripping gutter and end caps that drip every time it rains, we can help, on gutter end caps, roofline trims and uPVC fascias alike.

Modern London flats rely on sealed movement joints and cladding joints. Period houses have different weak points, such as gutter joints, trims and the line where an extension meets the old wall, and both kinds of building are found across London.

We guarantee the work for a year. If something is not right with it in that time, tell us and we will put it right.

Where
Erith (DA8, DA17, DA7)
Wider area
Greater London
Guarantee
12 months on all our work
Quotes
A clear quote up front
Telephone
0345 464 0079
Last updated
26 October 2026
Mr Mastic applicator sealing the top of a white uPVC door frame on a red-brick house

What sealant work can’t fix

We won’t take on work that will not last, so these are the limits:

  • Sagging gutters or broken brackets
  • Boards that have decayed or split
  • Problems with the roof covering

If in doubt, ring 0345 464 0079 or send us an email and we will say what we think before you book.

What we seal

  • Garage door frames
  • Soffit joints
  • Gutter joints
  • uPVC fascias
  • Gutter end caps
  • Roofline trims

Work for landlords, hotels and businesses

From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.

Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.

Gutter sealing in Erith: local notes

Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. London terraces and converted houses often share gutters, downpipes and walls, so check who is responsible for the outside before booking.

For landlords with property near Erith station, a dripping gutter joint or loose fascia trim is easy to miss until damp shows inside. As a London address, Erith can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.

Erith is about 3 miles north-west of Dartford, in Greater London. If you need gutter sealing in Erith, please ring 0345 464 0079 or email us for a quick quote. We cover Greater London from our Crawley base, Erith included. Across Greater London, we cover 764 places, Erith among them. You can also see our page for London, about 11 miles away.

Every address in DA8, DA17 and DA7 is within our area for gutter sealing, from the main roads to the quietest streets. Local streets include Church Road, Town Square and Erith High Street, all of which we cover. Neighbouring places we cover for gutter sealing include Northumberland Heath (1 mile south), Bexley Riverside (1 mile south), Belvedere (1 mile north-west), Lessness Heath (1 mile north-west) and Barnehurst (1 mile south). Larger places within reach include London (11 miles west), City of Westminster (14 miles west), Marylebone (14 miles west), St Pancras (13 miles west), Shoreditch (11 miles west) and Walthamstow (11 miles north-west).

Around Erith

We work in homes and buildings around Trinity School, The Cross Keys pub and Erith School. There’s a railway station in Erith itself: Erith station. Well-known places in the area include Erith Museum (less than half a mile east) and Erith and District Hospital (within half a mile south-west). For a walk, there’s Crossness Nature Reserve.

Map of Erith © OpenStreetMap contributors

Common problems we fix in Erith

Sealant on fascias and trims weathers like any outdoor joint. It goes hard, cracks and pulls away after some years.

Any of these means the joints need attention:

  • Cracked sealant along roofline trims
  • Stop ends leaking at the end of a run
  • Failed sealant on a garage door frame
  • Open joints in fascias and soffits

If you look after a building such as Christ Church (Erith) CofE Primary School, larger buildings have long runs of movement joint that eventually need resealing.

What to look for in a quote

  • What the quote includes, VAT included or not
  • What happens if they find a problem under the old sealant
  • What insurance they hold
  • Which sealant they’ll use, and why

10 questions to ask before you book

What affects the cost of gutter sealing

For a quick quote, just ask. The main things that affect it are:

  • The product the joint needs
  • Mould in or behind the old joints
  • The old material and how stubborn it is
  • Whether the work is at height

Combining jobs into one visit is usually more efficient than separate visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.

What to tell us for a quote

To help us quote quickly, please include:

  • The rough size of the job
  • Pictures of the joints, sent by email
  • If it’s domestic, commercial or a hotel
  • Any previous sealing or DIY work

We don’t publish a price list. Instead, we give you a clear price for your job. To get started, ring 0345 464 0079 or email us.

DIY versus a professional finish

The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.

If you’ve already had a go yourself, that is fine. We remove it and do the joint properly.

Erith: your questions answered

Is parking an issue for gutter sealing in Erith?

It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. That way the visit can be planned around it.

Do you cover Erith for gutter sealing?

Yes, Erith is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job, and we will give you a clear quote.

How much does gutter sealing cost in Erith?

There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.

Do you work for hotels and businesses?

Yes. We work in offices, washrooms, hotels and other commercial premises. Working times can be discussed when we quote.

Can you match the sealant colour?

Most of the time, yes. We will tell you which colours the right product comes in.

Do you work on high-level gutters?

Single-storey work is the most straightforward. For anything higher, we’ll confirm what access is needed once we know more.

Do you work for letting agents?

Yes. We work for householders, landlords, letting agents, businesses and hotels in Erith.

Is there any odour?

It depends on the product. Some products have a noticeable smell, others very little.

What we do, step by step

When we get to you, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. After that, the work takes an hour or two for a few joints, longer for a full run. In Erith, as in most of London, parking needs a little planning. It helps if you can point us to a visitor permit or a bay close to the door.

  1. We look at the gutters, fascias and trims and agree the joints to seal.
  2. We clean out each joint.
  3. We make sure everything is dry.
  4. We apply exterior or gutter sealant and finish it neatly.
  5. We check our work before we leave.

How to prepare

  • For indoor joints, keep the area dry beforehand if you can
  • Keep children and pets away from the work area
  • Mention any tricky access

Get a quote

The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email photos if that is easy.

Get a quick quote

Advice

What happens if it’s left?

Sealing over a dirty, wet joint is a quick fix that rarely lasts but it tends to peel off. Proper preparation is the difference. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in Erith, the repair is bigger than a sealant job.

What it costs depends on the size of the job, how much old material has to come out and access to the work. We give a clear quote before any work starts.

Why book with us

  • Any old sealant cut out fully, not covered over
  • Sealant colour chosen to suit
  • An ARBOMaster approved applicator
  • 180+ five-star Google reviews

See our cost guide and our reviews.

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job