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

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

Washroom sealing for Holborn, from a contractor working since 2005. Fully insured and CHAS accredited.

  • Split or peeling sealant at shower trays
  • Mould spotting along silicone joints
  • Stained or open joints at kitchen sinks and worktops
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
12-month guarantee on our workmanship.
Covering the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Washroom sealing across Holborn

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

Holborn: questions and answers

Could you schedule work at a campus like University of the Arts London for the vacation?

Yes. Education sites usually want the work in vacations or in phases during term, and we plan to suit. Let us know which documents your site asks for, and we’ll confirm them alongside the quote.

Is a hospital such as Great Ormond Street Hospital for Children somewhere you can work?

Yes, healthcare and care buildings are part of our work. Each area is agreed with the ward or department and the estates team in advance.

Do you do washroom sealing in healthcare settings?

We work in clinics, hospitals and care homes. Any records you need are confirmed with the quote before we start.

How long does a job like this take?

That varies with the scale of the job, but the work usually takes a morning or so for a small washroom, longer where showers and changing rooms are included. Larger or phased jobs take longer, and we’ll give you a timescale with the quote.

How long will the new sealant last?

It depends on movement, UV and weather, cleaning, traffic and the product. Treat them as maintenance items and inspect them regularly.

Will your applicators have CSCS cards?

Yes. Our applicators hold CSCS cards.

What sealant do you use in washrooms?

It depends on the joint. Most washroom joints take sanitary silicone while kitchens may need a food-safe grade.

Washroom sealing in Holborn, done properly

Our washroom work covers offices, hotels, schools and colleges, leisure centres and gyms, clinics and care homes, plus the kitchens and tea points that go with them. The products and the method are chosen for how heavily each space is used. Site teams most often ask us about urinal joints that look unhygienic and mould spotting along silicone joints, on IPS panels and cubicles, vanity units and basins and kitchens and tea points. Whoever orders the work in Holborn, the brief is normally the same: a clear scope, tidy work and joints that don’t fail again.

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.

We sign every job off with a 12-month guarantee. It’s a plain promise: if the work we did fails within twelve months, we return to fix it.

Where
Holborn (WC1X, WC1N, EC1R)
Wider area
Greater London
Cover
12 months on our workmanship
Quotes
Quoted before any work starts
Call
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

From enquiry to sign-off

Before we leave any area, we remove the tape, clean down and inspect every joint. Where the sealant needs time to cure before use, we tell you and sign the area. For a job in Holborn, access comes first. Give us the hours we can be on site and we will schedule to suit.

  1. Every room is surveyed and the failed joints listed.
  2. The fixed quote sets out the rooms, the products and the phasing.
  3. Old sealant is removed completely and the faces cleaned.
  4. Joints are degreased and dried.
  5. A sanitary silicone bead is laid and given a smooth tooled finish.
  6. Each area is handed back when ready.

Before we start on site

  • Tell staff and tenants when we will be in
  • Explain the parking and delivery arrangements
  • Clear stock, furniture or equipment away from the joints

Get a fixed quote

To get a fixed quote, speak to us on 01277 525 020 or email drawings and photos, telling us the site location and the nature of the job. Our quote form is another easy route.

Get a quick quote

Advice

Signs you need washroom sealing in Holborn

Sometimes the sealant fails because something behind it is moving or wet: a loose panel, a leaking waste or water coming through the wall. We look for it before resealing and tell you if another trade is needed.

These are often picked up first by site or facilities staff:

  • Kitchen worktop joints that can’t be kept clean
  • Resealing that didn’t last because the old bead stayed
  • Gaps where vanity tops meet the wall
  • Open joints at the base of cubicle panels

Units at estates like Grand Vitesse Industrial Estate (to the south-east of Holborn) have welfare blocks whose showers and toilets see shift after shift.

What to look for in a quote

  • Are they CHAS accredited or on Constructionline?
  • Is the sealant right for the movement and the substrate?
  • Who will actually carry out the work
  • How the existing material will be dealt with

Choosing a commercial sealant contractor

How the job changes by surface

Wet-room floors and floor-to-wall joints

We seal the visible joints; we don’t install or repair waterproofing below, and we’ll say if the trouble looks to be beneath the floor.

Urinals and WC pans

Floor joints around WC pans are often forgotten. We include them in the survey.

What we can’t put right

Not every problem is a sealant problem, and we’d rather tell you before you spend money. It won’t fix:

  • Water escaping beneath the floor rather than through a joint
  • A dripping waste or valve behind a panel
  • Fittings that move too much to hold a bead

If in doubt, phone 01277 525 020 or use the quote form and we will say what we think before you book.

Joints and surfaces we work on

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

Commercial washrooms in Holborn

London offices and hotels typically can’t close all their washrooms at once, which is why the work is split into phases agreed in advance. A good number of hotels sit less than 2 miles from Holborn. Behind every hotel door there’s a bathroom whose sealant will need renewing sooner or later. We work a handful of rooms at a time, so the hotel keeps letting the rest.

At a university such as University of the Arts London, under half a mile to the west of Holborn, summer is the usual window for resealing residence bathrooms. Toilets at places like Brunswick Centre (to the north-west of Holborn) are cleaned constantly, so silicone needs to be sound and smooth.

Holborn is about 2 miles north-west of London, in Greater London. We cover Holborn and the rest of Greater London, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Across Greater London, 764 places are covered, including Holborn.

Commercial sites across WC1X, WC1N and EC1R are covered for washrooms and wet areas. For a building on Shoe Lane, Drury Lane and New Square or nearby, send details and we will quote for washrooms and wet areas. Access to Holborn is via the A4 and A40, so getting applicators and materials to site is simple. Just outside Holborn, we also work in Farringdon (1 mile east), St Pancras (1 mile north-west), Clare Market (1 mile south), Smithfield (1 mile east) and Temple Bar (1 mile south). Bigger towns within reach include Kensington (4 miles west), Walthamstow (6 miles north-east), Hampstead (4 miles north-west), Ruislip (13 miles west), Brompton (3 miles south-west) and Stockwell (4 miles south).

Local landmarks in Holborn

Locally, jobs take us to sites close to The Yorkshire Grey pub, British Library of Political and Economic Science and City Academy, among other places. Other local landmarks include Elizabeth Garrett Anderson School (0.9 miles north) and Lincoln's Inn Fields (under half a mile south-west). There’s a railway station in Holborn itself: Farringdon station. Other landmarks nearby include Montfichet's Tower (0.7 miles south-east) and Brunswick Centre (0.5 miles north-west). Green spaces nearby include Barnsbury Wood and Ludgate Hill.

Map of Holborn © OpenStreetMap contributors

Maintenance after handover

A few simple habits keep the new joints working:

  • Avoid scourers and harsh descalers on silicone
  • Keep extract fans working and vents clear
  • Share your site rules when you send details
  • Note failing joints building by building

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

Boards behind panels and vanity tops can swell when water gets past a failed joint. Once that happens, a reseal won’t fix them.

Site staff or a sealant specialist?

Paperwork matters too. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we’ll confirm the paperwork you need with the quote.

A short, simple internal joint is often within reach of a maintenance team. Where it goes wrong is preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.

Accreditations

Trusted. Accredited. Insured.