Greater London · England
Haggerston External Mastic
We cover Haggerston for sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Cracked joints where brick meets render or frames
- Hard, crazed mastic that has stopped moving
- Panel joints letting water in
External mastic in Haggerston
A movement joint is a deliberate break that lets a wall expand and contract. The sealant in it has to stretch and squeeze for years, so once it splits or hardens, the joint stops working and water gets in. Common call-outs are for leaking joints around cladding and façade panels and rain getting behind render or cladding at a joint, across joints between brick and frames, concrete & block and render & cladding joints.
Working on the outside of a London home means planning access: shared paths, upper floors and parking. In Haggerston, joints up high may need ladders or other access, which is worth talking through when you book.
The work is covered for a year after we finish. If anything isn’t right with it, phone 0345 464 0079 or drop us an email.
- Where
- Haggerston (N1, E2, E8)
- Region
- Greater London
- Cover
- A year, on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What we can’t put right
Before you book, it’s worth knowing the limits:
- Walls that need new movement joints cut into them
- Cracks in the bricks or render themselves, away from the joints
- Rising or penetrating damp from elsewhere in the wall
If in doubt, call 0345 464 0079 or drop us an email and we’ll say what we think before booking.
Joints and surfaces we work on
- Concrete & block
- Joints between brick and frames
- Façade panels
- Brickwork movement joints
- Copings & trims
- Render & cladding joints
Common problems we fix in Haggerston
Some movement joints have been pointed up with mortar, often by someone who didn’t know what it was for. With the joint locked solid, the movement turns into cracks elsewhere in the wall.
These are the problems we’re asked about most:
- Old sealant gone brittle and cracked
- Gaps where render, brick and frames meet
- Moss and dirt in joints with no sealant left
- Joints pointed up with cement by mistake
Homes close to Church of St Columba include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant.
Before you book anyone
- Whether all the old sealant comes out first
- What product goes in the joint
- What happens if they find a problem under the old sealant
- Who turns up on the day
How the visit works
On the day, we look over the joints with you first. We protect the surfaces around the joints before any work begins. Most jobs take a few hours for a handful of joints, longer for a whole elevation. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Haggerston. A visitor permit or a nearby bay makes the visit run more smoothly.
- We start by walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- Joint faces are cleaned back and primed if the sealant needs it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
How to prepare
- Let us know about earlier repairs to the joints
- On commercial sites, let us know about site rules
- Where the joints are inside, avoid wetting them before we arrive
How to get a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we’ll explain what’s involved.
Read more
Surface by surface
Render joints
Render has movement joints and stop beads that need sealing. They’re resealed in a sealant that suits the render.
Joints between dissimilar materials
Brick against render, concrete against metal, stone against timber: every change of material is a joint. We seal the joint with a flexible exterior sealant so the movement is taken up.
What external mastic looks like in Haggerston
With historic houses such as Sutton House (about 1.5 miles north-east) nearby, there’s older building stock in the area around Haggerston as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material. London terraces and converted houses often share gutters, downpipes and walls, so it’s worth agreeing who is responsible before work starts.
For landlords with property near Hoxton station, split movement joints are easy to miss on a rental until damp shows inside. As a London address, Haggerston can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Haggerston is about 1 mile east of Hoxton, in Greater London. For external mastic in and around Haggerston, it’s easy to get a quote: please phone 0345 464 0079 or email us. We cover Greater London from our Crawley base. Our Greater London coverage runs to 764 places, Haggerston among them.
Here we cover the N1, E2 and E8 postcode area for external mastic. If you need external mastic at a property on Hyde Road, Glebe Road and Ufton Road or anywhere close by, our applicators can take on the job. You’ll find Haggerston on the A1208, which makes it straightforward to reach with everything needed for external mastic. We also cover Hoxton (1 mile west), Shoreditch (1 mile south), De Beauvoir Town (1 mile north), Kingsland (1 mile north) and Bethnal Green (1 mile south-east). Larger places within reach include London (3 miles south), City of Westminster (4 miles south-west), Marylebone (3 miles west), Kensington (6 miles south-west), Walthamstow (4 miles north-east) and Hampstead (5 miles west).
Around Haggerston
In Haggerston, that means homes and buildings near The Prince's School of Traditional Arts, Haggerston Park and Stag's Head pub. Also close by are Bishopsgate Institute Special Collections and Archives (1.1 miles south) and The Bridge Academy (within half a mile north-east). Haggerston has its own railway station: Hoxton station. Well-known places in the area include Museum of the Home (within half a mile south) and Montfichet's Tower (1.8 miles south-west). The countryside around Haggerston includes St. James's Park Lake and Barnsbury Wood.
Work for landlords, hotels and businesses
Housing providers, facilities teams and property managers book us too in Haggerston and across Greater London. Several sites can go on one quote, and we are fully insured for the work.
Hotels need rooms back in use, so the work can be planned room by room. We have worked in hotels as well as homes and businesses.
Why it’s worth doing now in Haggerston
It often makes sense to reseal all the failing joints on an elevation together. They’ve weathered the same way, and access only has to be arranged once. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and by the time it shows on a wall or ceiling in Haggerston, the repair is bigger than the sealant job would have been.
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote and we will talk you through it.
Why us?
- An ARBOMaster approved applicator
- Sealant colour chosen to suit
- White, clear, grey or coloured to suit, where the product allows
- Colour agreed with you before we start
Take a look at how sealant jobs are priced and what customers say.
Nearby places to Haggerston
More services for Haggerston
What affects the quote in Haggerston
Jobs vary more than people expect. The main factors:
- The number of rooms or windows
- The type of sealant required
- Whether old sealant or filler has to be cut out
- Any mould that needs treating
Combining jobs into one visit is usually more efficient than separate visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
Helping us quote
Photos by email are helpful but not essential. Please mention:
- Where the property is
- If it’s domestic, commercial or a hotel
- If someone has resealed it before
- Roughly how big the job is
To get a quote, call 0345 464 0079 or send us an email with the location and a short description of the problem. You’ll have a clear quote before any work starts.
Your questions about external mastic in Haggerston
Do you work for landlords with property near Hoxton station?
Yes, we work for letting agents and landlords. Just ring 0345 464 0079 or email us and tell us about the property, and we’ll send you a clear quote.
Is parking an issue for external mastic in Haggerston?
Parking in Haggerston, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot, so mention what’s available when you book.
Do I have to be there?
For indoor joints, yes, someone needs to let us in. Once we’ve agreed the job, you do not need to watch us work.
What do you need from me for a quote?
Only a few details: where it is, what you’ve noticed and how we reach it. After that, simply ring 0345 464 0079 or email us.
Do you hold any approvals?
Yes. We hold ARBOMaster approved applicator status, and we’re fully insured.
How long does external mastic take?
As a guide, most jobs take a few hours to a few days, depending on the length of joint and the access. Larger jobs naturally take longer, and we will say how long yours will take.
Will you leave a mess?
Tidy work is part of the job. Nearby surfaces are protected, and we clear up when we’re done.
Are you fully insured?
Yes. We are fully insured, and we have been doing sealant work for more than 20 years.