Greater London · England
External & façade joints in Seven Dials, Greater London
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Seven Dials and across Greater London. Fully insured, ARBOMaster approved and guaranteed for a year.
- Movement joints with cracked, split or missing sealant
- Failed seals between different materials
- Weathered mastic that no longer stretches
Aftercare tips
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Deal with leaking gutters that soak the joints below
- Point out the joints to other trades
- Clear growth from the base of walls and joints
- Avoid pressure-washing directly into sealant joints
Keep the joints clear of soil, plants and climbing growth. Damp material against the sealant shortens its life.
Water getting behind cladding or render can go unnoticed for a long time. By the time there’s a damp patch, the damage can be well established, so it’s worth resealing at the first signs.
External mastic for homes and businesses in Seven Dials
On houses, flats and commercial buildings across Seven Dials, 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. Common call-outs are for joints pointed up with cement by mistake and failed sealant between panels on a façade, on concrete & block, façade panels and render & cladding 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 Seven Dials, it’s worth checking who is responsible for the outside before booking.
All our work is covered by a 12-month guarantee.
- Place
- Seven Dials (W1F, W1D, W1T)
- Region
- Greater London
- Guarantee
- A year, on every job
- Price
- A clear price before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
What external mastic looks like in Seven Dials
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. 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 Tottenham Court Road station, failed wall and movement joints let damp in, so they’re worth checking between tenancies. Schools such as St Josephs Catholic Primary School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing.
Seven Dials is about 1 mile east of City of Westminster, in Greater London. Jobs in Seven Dials get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Seven Dials is one of 764 places in Greater London where we work.
Here we cover the W1F, W1D and W1T postcode area for external mastic. You’ll find streets such as Duck Lane, Drury Lane and Bridle Lane. Being close to the A301 and A400, Seven Dials is simple for us to get to for external mastic. We also cover the places around Seven Dials: St Giles (1 mile north), West End (1 mile west), Soho (1 mile west), Covent Garden (1 mile east) and Chinatown (1 mile south-west). Larger places within reach include Kensington (3 miles west), Walthamstow (7 miles north-east), Hampstead (4 miles north-west), Ruislip (13 miles west), Stockwell (3 miles south) and Orpington (13 miles south-east).
Local landmarks in Seven Dials
Typical jobs here are in homes near London Nautical School, St Anne's Churchyard and LSE Shaw Library and the streets around them. Also close by are Two Brewers pub (less than half a mile south-west) and Mercers' School (0.8 miles east). There’s a railway station in Seven Dials itself: Tottenham Court Road station. Nearby you’ll also find Kingly Court (0.5 miles west) and St Paul's Hospital (within half a mile north-east). The countryside around Seven Dials includes Barnsbury Wood and Ludgate Hill.
Honest limits
We will always be straight with you, so here’s what sealant can’t fix:
- Cracks in the bricks or render themselves, away from the joints
- Failed render or damaged cladding panels
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
Not sure which it is? You can ring 0345 464 0079 or email us and we’ll tell you honestly.
Where we work in Seven Dials
- Render & cladding joints
- Copings & trims
- Brickwork movement joints
- Façade panels
- Concrete & block
- Joints between brick and frames
What we’re called out for in Seven Dials
Some movement joints have been pointed up with mortar by mistake. With the joint locked solid, the movement turns into cracks elsewhere in the wall.
Keep an eye out for these signs:
- Weathered mastic that no longer stretches
- Failed sealant between panels on a façade
- Gaps where render, brick and frames meet
- Water getting into walls through failed joints
Seven Dials is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Before you book anyone
- Whether VAT is included
- Whether the sealant suits the joint
- Who turns up on the day
- Whether all the old sealant comes out first
For landlords and businesses
Housing providers, facilities teams and property managers book us too. Several sites can be quoted together.
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
How it works
On the day, we start by going over the job with you. Surfaces next to the work are protected before any work begins. Most jobs take a few hours for a handful of joints, longer for a whole elevation. In Seven Dials, as in most of London, parking needs a little planning. A visitor permit or a nearby bay makes the visit run more smoothly.
- We start by checking each joint, agreeing the ones to redo and how we will reach them.
- The old mastic and anything lodged in the joint is removed.
- We clean both faces of the joint and prime them where the product calls for it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Preparing for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Mention any sign-in or site rules at work premises
- Clear the area around the work
How to get a quote
Want a quote for external mastic? Please phone 0345 464 0079 or send us an email with a few details. We will explain what we’d do and give you a clear price before work begins.
Advice
Quotes for external mastic in Seven Dials
Call for a quick quote. What matters most is:
- The product the joint needs
- Any working-time requirements on site
- How many rooms, windows or areas are involved
- How easy the joints are to reach
Combining jobs into one visit generally makes better use of the time than several visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
Asking for a quote
There’s no need for technical detail. Just tell us:
- What the problem is, such as mould, gaps, leaks or cracking
- Whether it has been sealed before
- The address or postcode of the job
- The type of property
If you are in Seven Dials and need external mastic, call 0345 464 0079 or send us an email. Tell us what the problem is and where, and you will get a clear quote before we start.
Seven Dials: your questions answered
Do you work for landlords with property near Tottenham Court Road station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. Just phone 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear quote.
Is parking an issue for external mastic in Seven Dials?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot, so mention what’s available when you book.
Do you take out the old sealant first?
Yes, always, and completely. New sealant will not bond properly to old, so any old material comes out before anything new goes in.
Can you seal joints between render and window frames?
Yes. Where different materials meet is one of the most common joints we seal. The sealant is chosen to bond to both sides.
How do I get a quote for external mastic in Seven Dials?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Can you reach joints on upper floors?
That depends on how high the joints are and the ground below. Ground-floor joints are simple; for higher ones, send details and we will confirm the access.
How long does external mastic take?
Typically it takes a few hours for a handful of joints, longer for a whole elevation. Larger jobs naturally take longer.
Can I add another job to the visit?
Yes. Just list everything you need and we’ll quote it together.
What the job involves on each 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
Vertical joints in long brick walls let the brickwork expand without cracking. They’re resealed over backing rod with a low-modulus sealant in a colour to suit the brick.