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

Washroom Sealing contractors in Shepherd's Bush

Sealing in commercial washrooms, showers, kitchens and wet areas throughout Shepherd's Bush and nearby, by CSCS-carded applicators. Fully insured and CHAS accredited.

  • Panel joints letting water behind
  • Kitchen worktop joints that can’t be kept clean
  • Black mould inside silicone joints that cleaning can’t shift
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Signed off, with 12 months’ guarantee.
South East, London & Scotland
CHAS & Constructionline
£5m public liability

Washroom sealing near Shepherd's Bush

Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.

About our washroom sealing in Shepherd's Bush

In a commercial washroom, sealant is typically the first thing to wear out. Around basins, urinals, cubicles, IPS panels and shower trays it takes water, soap, cleaning chemicals and knocks every day, and once mould grows into it, it can’t be scrubbed out. The fix is to remove it completely and reseal with sanitary silicone containing anti-mould additives. If you have complaints from staff, guests or users about tired washrooms and sealant lifting along a tray edge, we can put it right. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in Shepherd's Bush, preparation and product choice get the time they need.

Restaurants, cafés and hotel kitchens across London have joints at worktops, sinks and wall cladding that need to stay smooth and cleanable. Hygienic and anti-mould sanitary sealants are used where they suit, with food-safe products where food contact is possible.

Guaranteed is the last step of every job. You get a 12-month guarantee on our workmanship, and we explain exactly what that covers when we quote.

The Mastic Doctor team standing beside their branded vans outside an office building
Where
Shepherd's Bush (W12, W11, W14)
Wider area
Greater London
Cover
12 months on every job
Quote
Fixed quote, scope in writing
Phone
01277 525 020
Page updated
3 November 2026

What happens if it’s left?

When a washroom looks worn, a refit isn’t the only answer. If the finishes are in good order, replacing the sealant may do much of what’s needed for now. Access in London is hard enough to arrange once, so it makes sense to deal with every failing joint while access is in place.

The specified product makes a difference, and so does the preparation, such as cutting out, priming or new backing rod. Access, phasing and site requirements come into it too.

Why choose Mastic Doctor in Shepherd's Bush

  • Work carried out by CSCS-carded applicators
  • Over 20 years of commercial sealing
  • A fixed quote before work starts
  • Standard and matched colours in many product ranges

Take a look at what affects the cost and our accreditations and insurance.

What we are called out for in Shepherd's Bush

Commercial cleaning is harder on sealant than everyday use. Strong chemicals, scourers and jet washing roughen, discolour or lift a bead so grime sticks to the damaged surface.

What tends to prompt an enquiry:

  • Panel joints letting water behind
  • Complaints from staff, guests or users about tired washrooms
  • Black mould inside silicone joints that cleaning can’t shift
  • Sealant lifting along a tray edge

Customer toilets in retail centres such as Kensington Arcade (to the east of Shepherd's Bush) rarely close, so resealing is phased.

Questions to ask before you book

  • Will failed sealant be removed rather than covered?
  • How they’ll work around occupants
  • How the joint faces will be prepared and primed
  • What level of public liability insurance do they hold?

Our contractor checklist

Wet areas in Shepherd's Bush’s workplaces

Shepherd's Bush has a good number of hotels close by, all within 2 miles. En suite bathrooms, staff changing rooms and kitchens all need their sanitary silicone renewed in time. The work can go floor by floor, agreed with housekeeping. In London buildings, toilets and showers generally need to stay partly open, so we take one block of facilities out of use at a time.

Office washrooms on sites such as Berghem Mews Business Village (less than half a mile south of Shepherd's Bush) are in use all working day, so resealing is phased to keep some open. At a college such as St Charles Catholic Sixth Form College, which lies north of Shepherd's Bush, washroom and kitchen sealant is best renewed in the holidays or in phases during term.

Shepherd's Bush is about 1 mile west of Kensington, in Greater London. Commercial clients in Shepherd's Bush use us for work on washrooms and wet areas, as part of our coverage of Greater London. Our Greater London coverage takes in 764 places, large and small.

We take on washrooms and wet areas across the W12, W11 and W14 postcode area. Among the streets we cover are Bard Road, Stowe Road and Wells Road, and sites on any of them can send details for a fixed quote. Shepherd's Bush sits on or close to the A402, which helps when planning parking and deliveries for the job. Sites close to Shepherd's Bush are covered too, including White City (1 mile north), Holland Park (1 mile east), Notting Hill (1 mile north-east), Kensington (1 mile east) and Notting Dale (1 mile north-east). Bigger towns within reach include London (5 miles east), City of Westminster (3 miles east), Marylebone (3 miles east), St Pancras (5 miles east), Shoreditch (6 miles east) and Walthamstow (10 miles north-east).

Landmarks near Shepherd's Bush

Recent enquiries here include premises near The Cardinal Vaughan Memorial RC School, Corona Theatre School and Polish Library POSK in London, among other places. Also close by are Hammersmith Park (0.5 miles north-west) and The Central Bar (under half a mile east). Shepherd's Bush has its own railway station: Shepherds Bush station. Nearby you’ll also find West 12 Shepherds Bush (under half a mile east) and Culture House (under half a mile west). The countryside around Shepherd's Bush includes WWT London Wetland Centre and The Long Water.

Map of Shepherd's Bush © OpenStreetMap contributors

Commercial clients in Shepherd's Bush

FMs need a contractor who is easy to get on site. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we will confirm them with the quote.

For main contractors, we work as the sealant subcontractor. We work to your programme, your specification and your site rules, and our applicators hold CSCS cards.

How a job runs

On arrival, we sign in, go through any site induction and check how permits are handled. Floors, finishes and fittings next to the joints are covered before any cutting starts, and the work typically takes half a day to a day per washroom, depending on the number of fittings. Most London premises stay occupied while we are on site, so zones and timings are agreed with whoever manages the building. Areas are handed back as each section is finished.

  1. Every room is surveyed and the failed joints listed.
  2. You get a fixed quote with the phasing plan.
  3. The whole of the old bead is removed.
  4. Joints are degreased and dried.
  5. New anti-mould sealant goes in and is tooled neat.
  6. Each area is handed back when ready.

Before we start on site

  • Tell us what induction or permit system the site runs
  • Confirm the product named in the specification
  • Tell us which areas need to stay in use

Getting a fixed quote

Send details, get a quote, we seal, guaranteed: that’s how every job runs. To take the first step, call 01277 525 020 or email the details over.

Get a quick quote

Related advice

Looking after the joints

To get the most from the new sealant:

  • Make sure washroom ventilation is running
  • Don’t leave trays and floors sitting wet
  • Include joints in routine washroom inspections
  • Keep a record of which washrooms need attention

Any failure in our workmanship within the 12-month guarantee is ours to put right. After that, a routine look catches failing joints early.

In food areas, cleanability is something environmental health officers look at. Failed sealant around sinks and worktops is easy to put right in good time.

Different surfaces, different methods

Kitchens and tea points

Kitchen joints need to be smooth and sealed so they can be cleaned properly. Food-safe sealants are used where food may touch the joint.

Changing rooms and gyms

Showers, floor edges and vanity units in changing rooms all need sound sealant and we look at them as one job.

Your questions answered

Do you take on work at healthcare sites like Queen Charlotte's & Chelsea Hospital?

Yes, provided the work is planned with the site’s estates team. We follow the site’s permits, sign-in and infection-control procedures in every area.

Can you work around term dates at a campus such as BPP University?

Yes. Education sites typically want the work in vacations or in phases during term, and we plan to suit. We are CHAS accredited and a Constructionline member, and paperwork such as RAMS is confirmed with the quote.

Can you clean the mould off instead of resealing?

Cleaning may lighten it, but the mould returns. We replace the sealant with an anti-mould sanitary grade and check the ventilation isn’t the cause.

How long will the new sealant last?

Nobody can honestly give a figure in years, 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.

How much does the work cost?

We don’t publish prices, because every site is different. Send photos or drawings and we’ll price it at a fixed figure.

Can washrooms stay open while you work?

Just the room being resealed is out of use. Each room reopens after the sealant’s cure time, then we move on.

Is there a guarantee on the work?

Our workmanship has a 12-month guarantee, and we carry public liability insurance.

Accreditations

Trusted. Accredited. Insured.