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

Commercial washroom and wet-area sealing in Soho, Greater London

Need washroom sealing in Soho? Send us the details for a fixed quote, backed by a 12-month guarantee on the work.

  • Split or peeling sealant at shower trays
  • Stained sealant around pans and urinals
  • Gaps where vanity tops meet the wall
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
12-month guarantee on our workmanship.
South East, London & Scotland
Constructionline member
Fully insured: £5m PL

Washroom sealing in Soho

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

On site: what to expect

Tell us your site hours and access windows and we’ll plan around them. 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. In Soho, most buildings stay in use during the work, so we agree zones and timings with the building or facilities manager. Phased work keeps the rest of the building in use.

  1. Every washroom is checked joint by joint, with loose panels, leaks or damp noted for the right trade.
  2. A phasing plan keeps part of the building’s facilities in use at all times.
  3. Failed silicone is removed completely and the surfaces cleaned of every trace.
  4. Each joint is degreased and left dry, because silicone won’t bond to damp or soapy surfaces.
  5. New sanitary silicone with anti-mould additives goes in and is tooled neat.
  6. You get a reopening time for every room, with signage left up until then.

Getting the site ready

  • Point out any areas we must not close
  • Confirm the product named in the specification
  • Arrange parking or a loading space

Request a quote

Quotes are fixed against the scope you send, so you know the figure before anyone is on site. To ask for one, ring 01277 525 020 or email the details over.

Get a price

Related advice

Washroom sealing in Soho

From one staff toilet in Soho to washrooms across a whole estate, the route is the same: send details, get a fixed quote, we seal, guaranteed. Photos and a rough count of basins, urinals, showers and cubicles help us give a quick quote and a site visit is an option. Site teams most often ask us about shower tray joints that have opened up and open joints at the base of cubicle panels, across urinals and WCs, IPS panels and cubicles and vanity units and basins. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: in Soho, that means joint design, primers and backing rod as standard.

Washrooms in London offices, hotels and gyms are used hard from morning to evening. Mouldy or split sealant at vanity tops, IPS panels and urinals is replaced with anti-mould sanitary silicone, in phases so some facilities stay open.

We stand behind the joints we seal with a 12-month guarantee. It covers how we prepared and applied the sealant, and if something we did falls short, we return to it.

The Mastic Doctor team standing beside their branded vans outside an office building
Where
Soho (W1F, W1T, W1D)
Wider area
Greater London
Guarantee
12 months on our workmanship
Quotes
Quoted before any work starts
Call
01277 525 020
Page updated
3 November 2026

Common questions from Soho clients

Do hotels near Soho have to close for sealant work?

Almost never. The work is phased so most rooms stay available. The plan is built around your bookings.

Could you schedule work at a campus like University of Notre Dame for the vacation?

Yes. Education sites normally want the work in vacations or in phases during term, and we plan to suit. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.

Do you need to see the site first?

Many jobs can be quoted from photographs, drawings or a joint schedule. Where they aren’t, we arrange a site visit before quoting.

Do your applicators hold CSCS cards?

Yes. We use CSCS-carded applicators, as many construction sites ask for.

Do you need to remove the old sealant?

We always remove it. Fresh silicone can’t key to an old bead, so sealing over it soon peels.

Does the weather affect the work?

For external joints, yes. Sealant needs a dry joint and a temperature within the product’s range, so frost, rain or cold mornings can delay outside work. Inside work is seldom held up.

Is it possible to just clean mouldy silicone?

Not for long. Mould grows into the sealant itself, so it comes back however often it’s cleaned. Replacement is the lasting fix.

Should maintenance staff do it?

For a quick touch-up, site staff may be fine, but larger jobs are different: a specialist brings efficiency, a consistent finish and a 12-month guarantee.

There’s also the paperwork. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and our CSCS-carded applicators are used to working under those rules.

Quoting for work in Soho

Quotes vary with the job. It mainly depends on:

  • The total length or number of joints
  • How accessible the joints are
  • Site requirements such as inductions and permits
  • The product specified

The specified product makes a difference, and so does the preparation. Access, phasing and site rules also count.

What we need to price the job

There’s no need for a formal survey. A few details are enough to get going:

  • Your programme or deadline
  • Asbestos survey details if the building is older
  • Any specification or named product
  • Rough lengths or quantities, or drawings if you have them

A good quote starts with a clear picture: what’s there, how much of it, how we reach it and what’s specified. Send what you have, and we will arrange a site visit if anything is unclear.

When something else is needed

Being straight saves everyone time. Fresh joints won’t solve:

  • Leaks through tanking or membranes below the finishes
  • Loose panels, vanity units or tiles, which need fixing first
  • Vanity carcasses that have swollen

If you’re not sure, just phone 01277 525 020 or email the details over and we’ll give you a straight answer.

Where we work in Soho

  • IPS panels and cubicles
  • Kitchens and tea points
  • Showers, trays and wet room floors
  • Vanity units and basins
  • Urinals and WCs
  • Accessible toilets and changing rooms

Busy facilities in and around Soho

Busy London buildings need some toilets open at all times, so resealing goes floor by floor, agreed with the facilities team. There are a good number of hotels within about 2 miles of Soho. En suite bathrooms, staff changing rooms and kitchens all need their sanitary silicone renewed in time. We work a handful of rooms at a time, so the hotel keeps letting the rest.

For a campus such as University of Notre Dame, which lies south of Soho, showers in residences and washrooms in teaching blocks can be programmed around term dates. Welfare facilities in units on estates such as Grand Vitesse Industrial Estate (to the south-east of Soho) have showers, toilets and kitchens with sealant that works hard.

Soho is about 1 mile east of City of Westminster, in Greater London. We send applicators to Soho for washrooms and wet areas, handled exactly as we handle every other area. Soho is one of 764 places in Greater London on our list for washrooms and wet areas.

We cover the W1F, W1T and W1D postcode districts for washrooms and wet areas. Buildings on Duck Lane, Drury Lane and Bridle Lane are within our area for washrooms and wet areas. With the A4 and A301 nearby, Soho is straightforward for us to reach. If your building is just outside Soho, we cover West End (1 mile east), Chinatown (1 mile south), Seven Dials (1 mile east), St Giles (1 mile north-east) and St James's (1 mile south). A short drive away, we cover Kensington (3 miles west), Walthamstow (7 miles north-east), Whitechapel (3 miles east), Hampstead (3 miles north-west), Ruislip (13 miles west) and Stockwell (3 miles south).

What’s near Soho

Locally, jobs take us to sites close to Bar Soho, St Anne's Churchyard and Harris Westminster Sixth Form. Other local landmarks include LITE Regal International School (0.6 miles west) and London Library (0.5 miles south-west). Soho has its own railway station: Tottenham Court Road station. Well-known places in the area include Kingly Court (under half a mile west) and Montfichet's Tower (1.3 miles east). Not far away are St. James's Park Lake and Ludgate Hill.

Map of Soho © OpenStreetMap contributors

Work for main contractors and building owners

Whether you’re a managing agent, a property factor or an owner’s representative: send details, get a fixed quote, we seal, guaranteed. We can agree access arrangements and keyholder contacts beforehand.

Hospitality, education, healthcare, office and retail clients book us directly too. The work is planned around how the building runs, so guests, pupils, patients or staff are disturbed as little as possible.

When to call us in Soho

Cubicle panels, IPS panels and vanity units flex when people lean on them or doors are slammed, and shower trays shift under foot. If the joint wasn’t laid to take that movement, it tears or peels away.

Site and facilities staff are often the first to spot these:

  • Sealant stained black around basins and showers
  • Open joints at the base of cubicle panels
  • Open joints along basins and vanity units
  • Discoloured joints around urinals and WC pans

Toilets at colleges like Westminster Kingsway College Soho Centre, under half a mile to the west of Soho, take heavy use from students and staff alike.

What your quote should include

  • Will RAMS and insurance details be available?
  • What the guarantee covers, and for how long
  • Their public liability cover
  • Is the sealant right for the movement and the substrate?

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