The Mastic Doctor team standing beside their branded vans outside an office building
Greater London · England

Washroom Sealing contractors in Canary Wharf

Washroom sealing for Canary Wharf, from a contractor working since 2005. Fully insured, with a 12-month guarantee.

  • Stained sealant around pans and urinals
  • Sealant stained black around basins and showers
  • Kitchen worktop joints that can’t be kept clean
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Signed off, with 12 months’ guarantee.
Covering the South East & Scotland
CHAS accredited
Fully insured: £5m PL

Washroom sealing for Canary Wharf sites

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

How we handle washroom sealing in Canary Wharf

In a busy washroom, the sealant normally gives up long before the tiles or fittings. Basin tops, urinal backs, panel joints and shower trays put it under water, chemicals and daily cleaning, and once mould grows into it, it can’t be scrubbed out. We strip it out and lay new anti-mould sanitary silicone. We work on vanity units and basins, accessible toilets and changing rooms and showers, trays and wet room floors, and the usual reasons a site gets in touch are failed sealant behind washroom basins and complaints from staff, guests or users about tired washrooms. Whether you call it commercial sealant work, mastic application or joint sealing, in Canary Wharf it comes down to the same thing: failed joints cut out, faces prepared and the right sealant laid to the right depth.

Many London buildings can’t close every toilet at once. We work through washrooms floor by floor or core by core, at times agreed with you, so staff and visitors can always find an open washroom.

Our 12-month guarantee is about workmanship, not wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we spell out the cover before we begin.

The Mastic Doctor team beside their liveried vans in front of an office building
Place
Canary Wharf (E14, SE16, E22)
Region
Greater London
Guarantee
A 12-month guarantee
Quotes
Fixed quote, scope in writing
Call
01277 525 020
Updated
3 November 2026

Keeping Canary Wharf washrooms open while we work

In London buildings, toilets and showers generally need to stay partly open, so resealing goes floor by floor, agreed with the facilities team. Canary Wharf has four care or nursing homes no more than 2 miles away. In a care setting, a mouldy or lifting joint in a wet room is a hygiene issue as much as a cosmetic one. We plan the work with the manager so residents are disturbed as little as possible.

In a centre such as Surrey Quays Shopping Centre, 1.4 miles south-west of Canary Wharf, public washrooms are resealed a block of facilities at a time. At a hospital like The London Independent Hospital, which lies north-west of Canary Wharf, patient and staff washrooms are best done in short phases agreed with the ward.

Canary Wharf is about 2 miles north-west of Greenwich, in Greater London. Commercial clients in Canary Wharf can call on us for washrooms and wet areas, as part of our coverage of Greater London. Canary Wharf is one of 764 places we cover in Greater London.

Work on washrooms and wet areas is covered throughout E14, SE16 and E22, whatever the building. For a building on Castor Lane, Cassilis Road and Dockyard Lane or nearby, we can quote for washrooms and wet areas. Canary Wharf sits on or close to the A1261, useful when we plan access and materials. Just outside Canary Wharf, we also work in London Docklands (1 mile east), Poplar (1 mile north-east), Heron Quays (1 mile south-west), Coldharbour (1 mile east) and Blackwall (1 mile east). Further afield, our area takes in London (3 miles west), City of Westminster (6 miles west), Marylebone (6 miles west), Kensington (8 miles west), St Pancras (4 miles west) and Shoreditch (3 miles north-west).

Local landmarks in Canary Wharf

In Canary Wharf, that means premises near Tower Hamlets College, Sir John McDougall Gardens and The Ledger Building pub and the streets around them. Canary Wharf has its own railway station: Canary Wharf station. Other landmarks nearby include The Pumphouse Educational Museum (0.8 miles west) and Surrey Quays Shopping Centre (1.4 miles south-west). Open spaces near Canary Wharf include St. James's Park Lake and Tower Hill.

Map of Canary Wharf © OpenStreetMap contributors

From enquiry to sign-off

We schedule the visit to fit the site hours and access windows you give us. On the day, the work area is kept contained and tidy, and we check in with your contact before moving on to each new area. The ULEZ covers the whole of Greater London, and parking near a job is rarely simple. Let us know about any on-site parking or loading arrangements when you send the job details.

  1. We inspect each washroom and record the joints to be resealed.
  2. The fixed quote sets out the rooms, the products and the phasing.
  3. Old sealant is removed completely and the faces cleaned.
  4. Each joint is cleaned and left dry.
  5. New anti-mould sealant goes in and is tooled neat.
  6. Rooms reopen after the cure time.

Preparing the site

  • Send your site hours and access windows
  • Send any specification or drawings in advance
  • Tell us which areas need to stay in use

Request a quote

Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, speak to us on 01277 525 020 or send details through our quote form.

Ask for a quote

Related advice

What the job involves on each surface

Urinals and WC pans

Pan and urinal joints face constant cleaning and splashing. Once they discolour or split, they hold odours and look unhygienic.

IPS and cubicle panels

A panel that has already swollen won’t be fixed by sealant, and any we come across will be pointed out.

Work for main contractors and building owners

For main contractors, we work as the sealant subcontractor on new-build and refurbishment projects. We work to your programme, your specification and your site rules, with CSCS-carded applicators on site.

As a CHAS accredited contractor and Constructionline member, we’re straightforward to vet for your supplier list. Our insurance certificate can be sent along with the quote.

What affects the price in Canary Wharf

Sealant work doesn’t have a standard rate, because every site is different. What we look at:

  • Travel to remote or island sites
  • Backing rod, priming and other preparation
  • Phasing around occupants
  • Removal of failed or old sealant

Every site prices differently: joint size, product, access and site hours all play a part. A fixed quote follows once we understand the job.

What to include in your enquiry

To price the job accurately, we need a clear picture of the site. Send us:

  • How the joints are reached, and at what height
  • The asbestos register, for older buildings
  • Rough lengths or quantities, or drawings if you have them
  • The postcode of the building

To get a fixed quote, give us a call on 01277 525 020 or email drawings and photos. Our quote form is another easy route.

What we’re called out for in Canary Wharf

Warmth, moisture and soap residue are exactly what mould needs, and sealant joints trap all three. Even anti-mould grades can be colonised over time where extraction is poor.

Common reasons buildings call us in:

  • Split or peeling sealant at shower trays
  • Open joints along basins and vanity units
  • Users noticing mouldy joints
  • Sealant stained black around basins and showers

Halls of residence and teaching buildings at universities such as University of Sunderland in London, less than half a mile south-east of Canary Wharf, are easiest to reseal during vacations.

Comparing quotes

  • How the existing material will be dealt with
  • The terms of the workmanship guarantee
  • Their public liability cover
  • The named product and why it was chosen

How to choose a sealant contractor

Questions we’re asked in Canary Wharf

Do you work in occupied care homes around Canary Wharf?

Yes. We agree rooms and times with the manager and work a few areas at a time. We follow the home’s own procedures throughout.

Is hospital work, at somewhere like The London Independent Hospital, something you do?

Yes, provided the work is planned with the site’s estates team. Work is phased so departments keep running, under the site’s own rules.

What sealant do you use in washrooms?

It depends on the joint. Washrooms and showers take anti-mould sanitary silicone, and food areas take a hygienic, food-safe sealant where food contact is possible.

How do you deal with asbestos in old sealant?

Managing asbestos is the dutyholder’s responsibility, so for older buildings we ask for the asbestos register first. If anything suspect turns up, we stop until it’s tested.

Do you take on small jobs?

Small jobs are welcome alongside larger packages. Send details for a fixed quote.

Can weather delay the job?

For external joints, yes. Sealant needs a dry joint and a temperature within the product’s range, so damp, frosty or very cold days can stop external work. Internal work is rarely affected.

What about RAMS and site documents?

Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote.

Aftercare for building managers

Every sealant joint needs some looking after, and their life depends on movement, exposure, cleaning and use. Our advice:

  • Respect the cure time before reopening each room
  • Don’t leave an open joint at a basin or tray
  • Keep extract fans working and vents clear
  • Avoid scourers and harsh descalers on silicone

Ask your cleaning team to use gentle products and soft cloths on sealant. Strong acids, solvents and scourers wear the surface over time.

Water getting behind IPS panels and vanity units can swell the boards. After that, those parts need replacing rather than resealing.

Accreditations

Trusted. Accredited. Insured.