Greater London · England
External & façade joints in Chinatown, Greater London
Movement joints in Chinatown need attention? We remove the old material, prepare the joints and seal them properly, with a one-year guarantee.
- Damp patches traced to an open external joint
- Weeds or debris growing in open joints
- Sealant pulling away from one side of the joint
About our external mastic in Chinatown
Short cuts in external joints show up within a season or two. New sealant over old, joints packed with mortar and beads with no backing all tend to fail early. We strip the joint back and start again. If you have plants rooting in failed movement joints and weathered mastic that no longer stretches, we can help, on façade panels, brickwork movement joints and concrete & block 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.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Location
- Chinatown (W1F, W1D, W1T)
- Region
- Greater London
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
When to call us in Chinatown
Many joints fail because they were sealed too deep or with nothing behind them. If the sealant sticks to the back as well as the sides, it can’t stretch and tears as soon as the joint widens.
Any of these means the joints need attention:
- Leaking joints around cladding and façade panels
- Weathered mastic that no longer stretches
- Sealant pulling away from one side of the joint
- Moss and dirt in joints with no sealant left
If you let a flat or house near Tottenham Court Road station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
What to look for in a quote
- What happens if the job turns out different
- Whether they’re fully insured
- How much experience the applicator has
- How long to leave it before use
FAQs for Chinatown
Do you work for landlords with property near Tottenham Court Road station?
Yes. We work for letting agents and landlords as well as householders. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we’ll send you a clear quote.
Do you cover Chinatown for external mastic?
Yes, Chinatown is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or email us with a few details of the job.
Do you hold any approvals?
Yes. We hold ARBOMaster approved applicator status, and we are fully insured.
Do you have insurance?
Yes. We are fully insured for domestic and commercial work.
Is the work guaranteed?
Yes: twelve months. If anything isn’t right with the work within the year, let us know and we’ll sort it.
How often do external joints need resealing?
It varies from wall to wall: sunny, exposed elevations and busy joints wear faster. Check them each year and reseal when they split or harden. Our work comes with a one-year guarantee.
Does someone need to be in?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Will there be a smell?
That depends on the sealant. Some products have a noticeable smell, others very little.
DIY sealant or a professional job?
A DIY attempt does not rule out a professional job. We cut it out and start again.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
External mastic in Chinatown: local notes
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Benjamin Franklin House (about 0.4 miles south-east) nearby, there’s older building stock in the area around Chinatown as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
For site and facilities teams at buildings such as Soho Parish CofE Primary School, larger buildings have long runs of movement joint that eventually need resealing. Chinatown is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
Chinatown is about 1 mile east of City of Westminster, in Greater London. We provide external mastic to homes and businesses in Chinatown and nearby, as part of our work across Greater London. 764 places in Greater London are on our list, from the larger towns to small villages.
Work in W1F, W1D and W1T works the same way as everywhere else we cover. You’ll find streets such as Duck Lane, Drury Lane and Bruton Lane, and we cover them all. Main roads around Chinatown include the A4 and A301, so getting to you is simple. Close by, we work in Soho (1 mile north), St James's (1 mile south), West End (1 mile north-east), Seven Dials (1 mile north-east) and St Giles (1 mile north-east). We also work in nearby towns such as Kensington (3 miles west), Shoreditch (3 miles north-east), Walthamstow (7 miles north-east), Hoxton (3 miles north-east), Whitechapel (3 miles east) and Hampstead (4 miles north-west).
Near you in Chinatown
We work in homes and buildings around LITE Regal International School, London Library and Waxy O'Connor's pub, among other places. You’ll also find St Anne's Churchyard (under half a mile north-west) and Harris Westminster Sixth Form (0.8 miles south). There’s a railway station in Chinatown itself: Tottenham Court Road station. Other landmarks nearby include Leverian collection (less than half a mile south-east) and Montfichet's Tower (1.3 miles east). For a walk, there’s Barnsbury Wood and St. James's Park Lake.
Also near Chinatown
Also in Chinatown
How the visit works
Every visit runs the same way: we check the joints, mask and protect the surrounding surfaces, carry out the job and clear up. It usually takes a few hours for a handful of joints, longer for a whole elevation. For a job in Chinatown, 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.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Preparing for the visit
- Plan for the work area to be out of bounds to pets and children
- Clear items away from the joints we’re working on
- Tell us about access, such as stairs, a lift or high-level joints
Ask for a quote
Getting a quote is simple: tell us what needs doing and where and its rough size. A few photos by email make the job easier to understand.
Read more
Why it’s worth doing now in Chinatown
Water gets in through a failed movement joint, behind render and cladding. Resealing early keeps the job to the joint itself, instead of the wall and finishes around it. Converted houses in London often have a bathroom above someone else’s living room, and a slow leak from a failed seal can end up in the flat below. Putting it right early is much less trouble for homes in Chinatown.
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. You will know the price before we begin.
Why choose Mr Mastic in Chinatown
- White, clear, grey or coloured to suit, where the product allows
- We are fully insured
- 180+ five-star Google reviews
- Colour picked to suit the job
Work for landlords, hotels and businesses
We work for landlords and agents as well as householders. Resealing between tenancies keeps a property looking cared for.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we’ll quote.
Surface by surface
Copings and trims
A failed coping joint lets water into the top of the wall. Resealing them is a small job that protects a lot.
Concrete and blockwork
Concrete faces can be dusty and porous, so preparation is key. We prime where the sealant needs it before sealing.
Looking after it afterwards
Looking after new joints is easy, and it makes a real difference:
- Check external joints each spring
- Fix overflowing gutters above sealed joints
- Ask before painting over external sealant
- Wash walls gently around the sealant
Look over the joints once a year, ideally after winter. Splits, gaps at the edges or plants in the joint are early warning signs.
Once a joint can’t move, the wall finds another way, often as cracks near the joint. Resealing it early helps prevent that.