Greater London · England

Gutter, fascia & soffit sealing in St John's Wood, Greater London

Problem with your gutter and fascia joints in St John's Wood? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.

  • Water dripping where gutter sections meet
  • Old gutter sealant that has let go
  • Water running down the wall below the gutter

Gutter sealing in St John's Wood

About our gutter sealing in St John's Wood

Our work covers gutter joints and end caps as well as fascias and soffits plus roofline trims and garage door frames. It’s all about the joints rather than new guttering. If you’re dealing with rain getting in around a garage door and fascia boards with gaps between them, we can put it right, on soffit joints, gutter end caps and gutter joints alike.

Newer London blocks are built with movement joints in brick and render, and with cladding joints sealed with mastic. Older terraces have their own weak points: gutter joints, roofline trims and the joint where an extension meets the original wall.

The work is covered for a year after we finish. If anything isn’t right with it, ring 0345 464 0079 or drop us an email.

Outdoor mastic being applied where a white frame meets red brickwork, below the fascia and gutter
Where
St John's Wood (NW8, NW6, NW3)
Wider area
Greater London
Guarantee
One year on every job
Quote
A clear quote up front
Call
0345 464 0079
Page updated
26 October 2026

St John's Wood questions

Can you help a landlord with a rental near South Hampstead station?

Yes. We work for letting agents and landlords as well as homeowners, and several properties can be quoted together. You can phone 0345 464 0079 or drop us an email with the details for a clear quote.

Can you do gutter sealing in St John's Wood?

Yes, St John's Wood is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or send us an email and tell us what needs doing.

Will it make a mess?

No. We work neatly, protect the area around the joints and tidy up afterwards.

Will sealant fix a dripping gutter joint?

Yes, as long as the gutter itself is in good order. The joint is cleaned and dried first so the sealant bonds.

Is it OK to seal over old sealant?

No, it will not last. It may look fine at first, but the new layer lifts away from the old one. The old sealant has to come out completely.

Can you match the sealant colour?

In most cases you can choose. We’ll explain which colours are available and agree one before we start.

What do you put in the joint?

The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.

Is it worth trying it myself?

It depends on the job. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.

Keeping the joints in good condition

No joint lasts for ever, but care makes a real difference. Our tips:

  • Watch for drips in a downpour
  • Check fascia and soffit joints for gaps
  • Do not lean ladders against the gutter itself
  • Clear leaves and moss from the gutters

Clear the gutters once or twice a year so water does not sit on the joints. Standing water strains every seal.

Split sealant on fascias and trims lets water in behind. Sealing it early keeps the boards behind dry.

What affects the quote in St John's Wood

For a quick quote, just ask. What matters most is:

  • The size of the job
  • Whether old sealant or filler has to be cut out
  • When we can work, for business premises
  • The type of sealant required

Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, plus any working-time requirements on site. Call for a quick quote and we’ll explain what it covers.

What we need to know

To help us quote quickly, please include:

  • Where the job is, and your postcode
  • If someone has resealed it before
  • How we’d reach the joints
  • How many joints, rooms or windows are involved

Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. Whenever you are ready, phone 0345 464 0079 or send us an email.

Walls and rooflines in St John's Wood

With historic houses such as Winfield House (about 0.6 miles south-east) nearby, there’s older building stock in the area around St John's Wood as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.

For landlords with property near South Hampstead station, a dripping gutter joint or loose fascia trim is easy to miss until damp shows inside. Managing a site like George Eliot Primary School? Then its movement joints, gutters and trims need looking after like any other building’s. As a London address, St John's Wood can be tricky for parking: let us know about parking bays, permits or a driveway.

St John's Wood is about 1 mile south of Hampstead, in Greater London. We provide gutter sealing to homes and businesses in St John's Wood and the surrounding area, as part of our work across Greater London. St John's Wood is one of 764 towns and villages in Greater London where we work for gutter sealing.

Jobs for gutter sealing in NW8, NW6 and NW3 works the same way as everywhere else we cover. Whether your property is on The Lane, Hall Road and Hill Road or anywhere close by, our applicators can take on the job. St John's Wood sits on or near the A5205, so getting to you is simple. Nearby, we also carry out gutter sealing in South Hampstead (1 mile north), Swiss Cottage (1 mile north), Primrose Hill (1 mile north-east), Lisson Grove (1 mile south) and Haverstock (1 mile north-east). We also work in nearby towns such as London (4 miles south-east), Kensington (3 miles south-west), St Pancras (3 miles east), Shoreditch (4 miles east), Walthamstow (7 miles north-east) and Hoxton (4 miles east).

Near you in St John's Wood

Typical jobs here are in homes near Cecil Sharp House, Primrose Hill and Arnold House School and the streets around them. Nearby too are Quintin Kynaston Community Academy (less than half a mile north-west) and Cafe Med pub (under half a mile north-west). There’s a railway station in St John's Wood itself: South Hampstead station. A little further out are Hospital of St John and St Elizabeth (less than half a mile south) and Montfichet's Tower (3.5 miles south-east). For a walk, there’s The Long Water and Primrose Hill.

Map of St John's Wood © OpenStreetMap contributors

How the job changes by surface

Roofline trims

Trim joints are cut out and resealed.

uPVC fascias

Joints between fascia boards can open over time. They’re sealed tidily in a suitable colour.

Landlord and commercial work in St John's Wood

Housing providers, facilities teams and property managers book us too in St John's Wood and across Greater London. We can quote a run of properties together.

Letting agents often deal with us directly. Tell us the address, the job and how access works.

What we do, step by step

Every visit runs the same way: we look at the joints together, mask and protect the surrounding surfaces, carry out the job and tidy away. Most jobs take anything from an hour or two to a few hours. For a job in St John's Wood, parking and access are the things to plan: let us know about parking, the floor we will be working on and any lift or shared entrance.

  1. We find where the water is coming from and check the gutter is sound.
  2. We remove the old sealant and clean the joint.
  3. The joint is dried before sealing.
  4. A gutter sealant is applied to the joint.
  5. We check the run and clear debris near the joints.

How to prepare

  • Mention any leaks or damp you’ve noticed
  • Let us know about stairs, lifts or work at height
  • For business premises, tell us about site rules or sign-in

How to get a quote

The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and email photos if that’s easy.

Get a quick quote

Related advice

DIY sealant or a professional job?

If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.

What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.

What sealant work cannot fix

To be straight with you, some problems need a different trade:

  • Leaks from the roof rather than a joint
  • Fascias that need replacing
  • Blocked downpipes

If in doubt, ring 0345 464 0079 or email us and we’ll say what we think before booking.

Surfaces we seal

  • uPVC fascias
  • Roofline trims
  • Garage door frames
  • Gutter joints
  • Soffit joints
  • Gutter end caps
20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job