Greater London · England
Loughborough Junction External Mastic
External mastic for Loughborough Junction, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Leaking joints around cladding and façade panels
- Cracked joints where brick meets render or frames
- Rigid filler in a joint that should flex
External mastic in Loughborough Junction, done properly
On houses, flats and commercial buildings across Loughborough Junction, we reseal joints in brickwork, render, cladding and façade panels. The preparation is the same whatever the wall: clean joint faces and the right depth. If you’re dealing with leaking joints around cladding and façade panels and joints pointed up with cement by mistake, we can put it right, whatever the surface.
Working on the outside of a London home means planning access: shared paths, upper floors and parking. For a home in Loughborough Junction, tell us how high the joints are and how to reach the back of the building.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we will put it right.
- Location
- Loughborough Junction (SW9, SE5, SE24)
- Wider area
- Greater London
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Landlords, agents and businesses in Loughborough Junction
Landlords and agents in Loughborough Junction can book us as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
When it is not the sealant
To be straight with you, some problems need a different trade:
- Walls that need new movement joints cut into them
- Damp that is not coming from the joint
- Subsidence or other structural problems
Not sure which it is? You can ring 0345 464 0079 or send us an email and we will tell you honestly.
Surfaces we seal
- Façade panels
- Render & cladding joints
- Brickwork movement joints
- Copings & trims
- Joints between brick and frames
- Concrete & block
What external mastic looks like in Loughborough Junction
London terraces and converted houses often share gutters, downpipes and walls, so it’s worth agreeing who is responsible before work starts. 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.
Homes close to St Matthew's Camberwell include some older properties, and the joints between older walls, newer extensions and the roofline need a sealant that can move. For site and facilities teams at buildings such as St Saviour's Church of England Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Loughborough Junction is about 1 mile east of Stockwell, in Greater London. Across the SW9 area, we cover external mastic for homes and businesses. 764 places in Greater London are on our list, large and small.
Our applicators cover all of SW9, SE5 and SE24 for external mastic. Whether your property is on Minet Road, Heron Road and Lowth Road or anywhere close by, we can help. We also cover the places around Loughborough Junction: Angell Town (1 mile north-west), North Brixton (1 mile north-west), Stockwell (1 mile west), Brixton (1 mile south-west) and Little Portugal (1 mile north-west). Further out, we also cover City of Westminster (4 miles north-west), Marylebone (4 miles north-west), Kensington (5 miles north-west), St Pancras (4 miles north), Shoreditch (4 miles north) and Walthamstow (9 miles north).
Near you in Loughborough Junction
We work in homes and buildings around The Michael Tippett School, Max Roach Park and The Hospital and Home Tuition Sick Children's Service and the streets around them. Loughborough Junction has its own railway station: Loughborough Junction station. A little further out are Gabriel's Wharf (2.9 miles north) and London General Cab Company Museum (0.6 miles north-west). Not far away are Battersea Park Lake and Centre for Wildlife Gardening.
Questions from Loughborough Junction
I let a flat near Loughborough Junction station. Can you help?
Yes, we work for landlords and letting agents. You can call 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before any work starts.
Can you do external mastic in Loughborough Junction?
Yes, Loughborough Junction is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or email us with a few details of the job, and we’ll give you a clear quote.
Will the old sealant be removed?
Yes. All of the old material is cut out and the joint cleaned before resealing.
Is the work guaranteed?
Yes. There’s a 12-month guarantee on every job.
Why do you put foam in the joint first?
Backing rod controls the sealant depth and keeps it off the back of the joint. Then the sealant bonds to two faces and can move.
Do you hold any approvals?
Yes. We’re an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
Can I add another job to the visit?
Yes. Tell us about everything you’d like done and we’ll quote it together.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. If you can, email a few photos.
Why deal with it now?
An open joint keeps letting water into the wall with every downpour. Wet masonry is more easily damaged by frost, so the problem grows beyond the joint itself. In a London flat, a failed joint rarely stays your problem alone: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why Loughborough Junction customers choose us
- A sealant colour to suit the surroundings
- One-year guarantee on every job
- Tidy, careful work
- Homes, businesses and hotels
Read what affects the cost or what customers say.
Quotes for external mastic in Loughborough Junction
Every job gets its own quote. This is what makes a difference:
- The number of rooms or windows
- Whether the work is at height
- Whether there’s mould to deal with
- The size of the job
What it costs depends on the amount of work, how hard the old material is to remove and how easy the joints are to reach. You’ll have a clear quote before any work starts, so you know where you stand.
Asking for a quote
You do not need to know the technical terms. Just tell us:
- Photos by email, if that’s easy
- If someone has resealed it before
- The address or postcode of the job
- If it’s domestic, commercial or a hotel
We quote each job on its own. Just ring 0345 464 0079 or send us an email with the details and send pictures if you have them.
Aftercare tips
How long the joints last depends on use and care. Here’s what we suggest:
- Deal with leaking gutters that soak the joints below
- Keep soil, plants and ivy away from the joints
- Check external joints each spring
- Keep movement joints as flexible joints, not mortar
If you have more work done on the wall, such as new render, cladding or an opening, show the contractor the movement joints. They must stay as flexible joints, never rendered or pointed over.
Act while the splits are small. Then it’s a straightforward cut-out and reseal with no damage behind it to deal with.
Signs you need external mastic in Loughborough Junction
A lot of failed joints come down to preparation: dusty or wet faces, no primer where one was needed, or old sealant left in. The new sealant then lets go long before it should.
The problems people normally mention when they call are:
- Gaps where render, brick and frames meet
- Joints pointed up with cement by mistake
- Panel joints letting water in
- Sealant pulling away from one side of the joint
As a London address, Loughborough Junction can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Comparing quotes
- What the quote includes, VAT included or not
- Who does the work, and how experienced they are
- Whether you can choose the colour
- What product goes in the joint
Nearby places to Loughborough Junction
Also in Loughborough Junction
How it works
A visit follows a simple pattern: we check the joints, protect the area around them, do the work and clear up. Most jobs take a few hours to a few days, depending on the length of joint and the access. For a job in Loughborough Junction, parking and access are the things to plan: tell us about permits, visitor bays or off-street space, which floor we are working on and whether there’s a lift.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Getting ready for the visit
- For business premises, tell us about site rules or sign-in
- Keep pets and children clear of the area while we work
- Tell us about any water getting in
How to get a quote
Asking for a quote is easy: tell us what needs doing and where, and roughly how big it is. Photos by email help us understand the job, and we’ll take it from there.