Greater London · England
External & façade joints in Shadwell, Greater London
Sealing brickwork movement joints, render, cladding and façade joints for homeowners, landlords and businesses in Shadwell. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Gaps where render, brick and frames meet
- Sealant pulling away from one side of the joint
- Hard, crazed mastic that has stopped moving
Shadwell: your questions answered
Can you help a landlord with a rental near Wapping station?
Yes, we work for letting agents and landlords. Just phone 0345 464 0079 or drop us an email and tell us about the property, and we will send you a clear quote.
Is parking a problem for a job in Shadwell?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. The visit is then planned around what’s available.
Can I do it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Do you work for hotels and businesses?
Yes, regularly. We can plan bigger jobs in stages to suit the site.
Is it OK to seal over old sealant?
No. We remove every bit of old sealant first.
Are you fully insured?
Yes. We’re fully insured.
How long before the joint can be used?
That depends on the sealant used, so follow the cure time we give you.
What does external mastic cost?
Size, access and the old material all affect the cost. Call for a quick quote and we will talk you through it.
External mastic for homes and businesses in Shadwell
Joints in render and cladding are easy to overlook until a damp patch appears. We look over the joints, agree the ones to renew and reseal with a flexible, weatherproof product in a matching colour. Typical jobs include water getting into walls through failed joints and sealant that has lost its bond to the brick or render, across joints between brick and frames, render & cladding joints and brickwork movement joints.
In London terraces and converted houses, gutters and walls are often shared with the house next door, so one failed joint can cause damp for more than one household. In a converted house in Shadwell, it’s worth checking who is responsible for the outside before booking.
We guarantee the work for a year. If something is not right with it in that time, tell us and we’ll put it right.
- Location
- Shadwell (SE16, E1, E1W)
- Wider area
- Greater London
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
What external mastic looks like in Shadwell
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Mansion House (about 1.9 miles west) are a reminder that the area around Shadwell has older buildings as well as new. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
For site and facilities teams at buildings such as Peter Hills with St Mary's and St Paul's CofE Primary School, larger buildings have long runs of movement joint that eventually need resealing. Shadwell is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
Shadwell is about 1 mile south-east of Whitechapel, in Greater London. We carry out external mastic for homes and businesses in Shadwell and the surrounding area. Shadwell is one of 764 towns and villages in Greater London we cover for external mastic.
We cover every part of the SE16, E1 and E1W postcode area for external mastic and the streets around it. Streets in the area include Swan Road, Thame Road and Brunel Road, and we cover them all. Shadwell is on the A101 and A126, which makes it straightforward to reach. Other places close to Shadwell include Ratcliff (1 mile north), East End of London (1 mile north-west), Wapping (1 mile west), St George in the East (1 mile west) and Limehouse (1 mile north-east). Further out, we also cover City of Westminster (5 miles west), Marylebone (4 miles west), Kensington (7 miles west), St Pancras (3 miles north-west), Walthamstow (6 miles north) and Hampstead (7 miles north-west).
Local landmarks in Shadwell
Locally, jobs take us to homes and businesses close to Bacon's College, Bishopsgate Institute Special Collections and Archives and Russia Dock Woodland, among other places. Nearby too are Prospect of Whitby pub (less than half a mile west) and St Mellitus College (0.6 miles west). Shadwell has its own railway station: Wapping station. Other landmarks nearby include St Olave's Hospital (0.8 miles south-west) and The Pumphouse Educational Museum (less than half a mile east). The countryside around Shadwell includes Lavender Pond and Tower Hill.
How the job changes by surface
Cladding and façade panels
Panels heat up and cool down quickly, so the joints work hard every day. The sealant is chosen with that in mind.
Brickwork movement joints
People sometimes point up a brick movement joint by mistake. If that’s happened, we rake it out and reseal it properly where it can be done safely.
Work for landlords, hotels and businesses
Letting agents often deal with us directly. Tell us the address, the job and how access works.
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.
What we can’t put right
New sealant can’t fix everything, and we will tell you before work begins. Sealant won’t put right:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Subsidence or other structural problems
- Failed render or damaged cladding panels
If you’re not sure, just ring 0345 464 0079 or drop us an email and we will give you a straight answer before you book.
Surfaces we seal
- Copings & trims
- Joints between brick and frames
- Concrete & block
- Brickwork movement joints
- Façade panels
- Render & cladding joints
Keeping the joints in good condition
So the new joints stay in good condition:
- Fix overflowing gutters above sealed joints
- Clear growth from the base of walls and joints
- Walk round the building once a year and look at the joints
- Make sure movement joints are not pointed over
Have a quick look at the joints each spring. Splits, gaps at the edges or plants in the joint are early warning signs.
Leave a failed movement joint and water keeps getting into the wall. That can lead to damp patches, staining and frost damage, all bigger jobs than a reseal.
Other services in Shadwell
DIY versus a professional finish
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
How the visit works
There is not much for you to do on the day. Point us to the joints and we will get on with it. The job generally takes anything from a few hours to several days, depending on the building. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Shadwell. 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.
- Every bit of old sealant and any mortar or debris is cut out.
- Joint faces are cleaned back and primed if the sealant needs it.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
Preparing for the visit
- For business premises, tell us about site rules or sign-in
- Keep children and pets away from the work area
- Tell us about access, such as stairs, a lift or high-level joints
Ask for a quote
If you are in Shadwell and need external mastic, ring 0345 464 0079 or email us. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Read more
Do you need external mastic in Shadwell?
Every building moves. Brickwork grows a little over the years, blockwork and concrete shrink, and all of it moves with heat and moisture. The sealant in the movement joints takes that strain.
Keep an eye out for any of the following:
- Leaking joints around cladding and façade panels
- Sealant that has lost its bond to the brick or render
- Plants rooting in failed movement joints
- Damp patches traced to an open external joint
Letting a property close to Wapping station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
What to look for in a quote
- Whether the sealant suits the joint
- What guarantee comes with the work
- What the quote includes, VAT included or not
- How the surfaces are prepared before sealing