Sealant specialists in Chinatown
Sealant work for offices, shops, hotels and other commercial buildings throughout Chinatown and nearby, by CSCS-carded applicators. Fully insured and CHAS accredited.
- Black mould through washroom sealant that won’t clean off
- Expansion joints with the sealant torn out
- Damp patches where an external joint has failed
Commercial sealant contractors in Chinatown
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Keeping the joints sound
A few simple habits keep the new joints working:
- Put external and wet-area joints on a regular inspection round
- Report cracked or peeling sealant early
- Check the asbestos register before anyone disturbs old sealant in an older building
- Keep barriers up until the new sealant has cured
In washrooms and kitchens, extraction makes a real difference to sealant life. Fans that are broken or switched off leave joints damp for longer, which is how mould gets back in. Your maintenance team can look at extract fans at the same time.
Each spell of wet weather pushes more water through an open joint. Behind a panel or frame, that water can sit unseen for a long time. Catching it at the sealant stage avoids the bigger repair.
Commercial sealant contractors for commercial buildings in Chinatown
Pricing a commercial reseal is a short process. Send photos, drawings or a schedule of the joints through our quote form. Where the photographs don’t tell the full story, we arrange a site visit. We work on movement joints in walls and floors, washrooms and tea points and window and door perimeters, and the failures we are asked to look at most are mouldy silicone around WCs, urinals and vanity tops and movement joints packed with grit and debris. Facilities teams, main contractors and managing agents in Chinatown tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.
Multi-site clients with buildings in and around Chinatown can put several sites on one programme, so standards and paperwork match across every site.
For managing agents and FMs looking after premises in Chinatown, access is usually the first question: loading bay slots, goods lifts, permits to work and somewhere to keep materials. With access agreed, we work through the sealant joints a section at a time, keeping disruption to tenants low.
A 12-month guarantee applies to all our work in Greater London. If an installation problem shows up, call the office on 01277 525 020 or email a schedule or drawings and we’ll arrange a return visit.
- Location
- Chinatown (W1F, W1D, W1T)
- Region
- Greater London
- Cover
- 12 months on every job
- Price
- Quoted before any work starts
- Call
- 01277 525 020
- Page updated
- 3 November 2026
Also near Chinatown
What else we do in Chinatown
Do you need commercial sealant contractors in Chinatown?
If only one face has lost its grip, that’s an adhesion failure. The usual causes are poor preparation, a missed primer, contamination on the joint face or sealant bonded to the base of the joint. It’s one of the commonest faults we find on earlier work.
Any of the following is a good reason to get the joints checked over:
- Frame mastic that has hardened and come away from the wall
- Damp patches where an external joint has failed
- A top-up bead over failed sealant, now lifting
- Weathered facade sealant that no longer flexes
Premises within reach of Tottenham Court Road station (less than half a mile north of Chinatown) often have busy frontages where joints are seen by everyone passing.
What your quote should include
- How they handle RAMS and site documents
- Are they CHAS accredited or on Constructionline?
- How long is the guarantee, and what does it include?
- Their approach to joint depth and backing
Common questions from Chinatown clients
Does a hotel in Chinatown need to shut while its sealant is renewed?
Almost never. The work is phased so most rooms stay available. The plan is built around your bookings.
Can you work at a site such as Grand Vitesse Industrial Estate, by Chinatown?
Yes, sites like Grand Vitesse Industrial Estate are within our area, along with the rest of Chinatown. To start, just call the office on 01277 525 020 or email drawings and photos with the unit, the joints involved and your access times.
Are you CHAS accredited and on Constructionline?
Yes. Mastic Doctor is CHAS accredited and a Constructionline member.
How long do sealant joints last?
There isn’t a single answer, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular inspection is the best way to catch problems early.
Will the building have to shut during the work?
It’s mostly about sequence: areas are phased, access windows agreed and enough washrooms or entrances left in use. Let us know what can’t close and we’ll work around it.
Does weather matter for sealant work?
For external joints, yes. The joint has to be dry and within the product’s temperature range, so damp, frosty or very cold days can stop external work. Inside work is seldom held up.
What about asbestos in old mastic?
It can, on some older buildings. So we check the register first and stop work on anything suspect until it’s tested.
Diagnose, treat, sign off
Diagnose, treat, sign off: every visit follows that pattern. First comes an inspection and agreement on scope, then the work is carried out to the specified product and detail, and the job ends with a walk round and sign-off. All of Greater London is in the ULEZ, and kerbside space in Chinatown can be scarce. If there’s a loading bay, a car park or a permit we can use, tell us when you send details.
- We begin with whatever information you have, whether that’s photos, a drawing or a list of locations.
- Next comes a diagnosis and a fixed quote.
- Site hours, access windows and the order of areas are agreed before we start.
- We strip the failed bead and prepare both faces of the joint.
- The depth is set, primer is used where the maker calls for it, and the fresh bead is applied and tooled.
- Each area is inspected, signed off and backed by our 12-month guarantee.
What we need from you
- Let us know about inductions and permits
- Share the asbestos register for older buildings
- Tell us your opening times and when work is allowed
Get a fixed quote
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to phone 01277 525 020 or email the details over with what you know.
Advice
Doing it in-house
General builders and handymen seal joints, but it isn’t their main trade. A specialist prepares properly, controls joint depth and picks a product with the right movement class, which is what makes a joint last.
Some joints are best left to specialists: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. A poor seal in places like these tends to cost more to put right later.
Commercial sealant contractors in Chinatown: the local picture
A 2-mile radius around Chinatown takes in a good number of hotels. Refits in hotels bring joints at vanity tops, bar counters and reception desks where the colour has to suit the scheme, and the work can be phased so the rest of the hotel keeps trading. Most London commercial buildings run contractors through a reception, a permit system and booked goods-lift slots. We plan around them and agree phasing so tenants and clients aren’t disrupted.
A unit on an estate like Grand Vitesse Industrial Estate (to the east of Chinatown) usually has an office front, a trade counter and staff facilities with joints of their own. Sites a few miles apart, such as Grand Vitesse Industrial Estate and Southwark Bridge Business Centre, can share one programme and one point of contact.
Chinatown is about 1 mile east of City of Westminster, in Greater London. Across the W1F postcode area, the process is the same: details in, fixed quote out, then sealing and a 12-month guarantee. Chinatown is one of 764 places in Greater London on our list.
Commercial sites across W1F, W1D and W1T are covered. Among the streets we cover are Duck Lane, Drury Lane and Bruton Lane. You will find Chinatown on or near the A4 and A301, so getting applicators and materials to site is simple. We also cover 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). Further afield, our area takes in 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).
Around Chinatown
We work on buildings around LITE Regal International School, London Library and Waxy O'Connor's pub. Other local landmarks include St Anne's Churchyard (less than 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. A little further out are Leverian collection (under half a mile south-east) and Montfichet's Tower (1.3 miles east). Green spaces nearby include Barnsbury Wood and St. James's Park Lake.
What we can’t put right
Before quoting, we check that sealant is the right answer. It won’t put right:
- Leaking roofs, gutters or flat-roof membranes (those need a roofer)
- Broken glass or blown double-glazed units
- Removing asbestos-containing materials (a licensed or specialist contractor’s job)
If you’re not sure, just phone 01277 525 020 or use the quote form and we’ll give you a straight answer before you book.
Surfaces we seal
- Movement joints in walls and floors
- Washrooms and tea points
- Kitchen worktops and splashbacks
- Floor and threshold joints
- External facade joints
- Window and door perimeters
What affects the price in Chinatown
These are the things that shape the price:
- How much existing material needs removing
- The site’s rules and procedures
- Distance, for remote addresses
- Specialist products, such as fire-rated or hygienic sealants
Pricing sealant joints depends on how many there are, their condition and the access, plus any specification you’re working to. Call for a quote.
Details that help us quote
To price the job accurately, we need a clear picture of the site. Useful things to include:
- The product your specification calls for
- Whether an asbestos survey exists
- Approximate linear metres or a joint schedule
- Any dates the work must fit around
To get a fixed quote, phone 01277 525 020 or email us, telling us the site location and the nature of the job. Our quote form is another easy route.