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

Washroom Sealing contractors in Victoria

Sealant work in Victoria for main contractors, managing agents and facilities managers: sealing in commercial washrooms, showers, kitchens and wet areas, quoted at a fixed price.

  • Kitchen worktop joints that can’t be kept clean
  • Split or peeling sealant at shower trays
  • Open joints at the base of cubicle panels
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
Constructionline member
£5m public liability

Need washroom sealing in Victoria?

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

Why it’s worth doing now in Victoria

Open or mouldy joints are hard to keep hygienic, and in kitchens, clinics and schools that is a real concern. A smooth, sealed joint can be cleaned properly. Repeat call-outs disrupt occupied London buildings, so cutting the old sealant out fully and doing it right once is the better route.

Small jobs and large programmes are priced from the same things: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote, and you’ll have a fixed figure to work with.

Why clients in Victoria choose us

  • Fully insured
  • A fixed quote before work starts
  • 12 months’ guarantee on every job
  • Old sealant cut out, never sealed over

Read what affects the cost or how we’re accredited.

Washroom sealing for commercial buildings in Victoria

Closing all the facilities in a building isn’t an option. We phase the work one washroom, one bank of cubicles or one changing room at a time, so staff, guests or pupils always have somewhere to go. Give us your site hours and access windows and the phasing is planned around them. We work on IPS panels and cubicles, showers, trays and wet room floors and urinals and WCs, and what we are called in for most is resealing that didn’t last because the old bead stayed and failed sealant behind washroom basins. Facilities teams, main contractors and managing agents in Victoria tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

Washrooms in London offices, hotels and gyms are used hard from morning to evening. We cut out tired sealant around vanity units, cubicles, IPS panels and showers and lay fresh anti-mould sanitary silicone, a block of facilities at a time.

Our 12-month guarantee is about workmanship, not wear and tear. How long a sealant joint lasts depends on movement, exposure, cleaning and use, so we spell out the cover before we begin.

The Mastic Doctor team standing beside their branded vans outside an office building
Place
Victoria (SW1V, SW1P, SW1X)
Region
Greater London
Cover
A 12-month guarantee
Quotes
Fixed quote, scope in writing
Call
01277 525 020
Last updated
3 November 2026

Our process

Diagnose, treat, sign off: every visit follows that pattern. First comes an inspection and agreement on scope, then we prepare and seal each joint with the specified product, and the job ends with a walk round and sign-off. Most London premises stay occupied while we are on site, so we agree zones and timings with the building or facilities manager. Areas are handed back as each section is finished.

  1. First, the phasing is agreed so facilities stay open.
  2. Anything behind the joints that needs another trade is flagged.
  3. Failed sealant and residue are stripped out.
  4. We reseal with the grade suited to each area.
  5. We confirm reopening times for each washroom.

Getting the site ready

  • Tell us what induction or permit system the site runs
  • Send any specification or drawings in advance
  • Send your site hours and access windows

Request a quote

Let us know the site, the scope and your timescale, and we will put a fixed quote together. The easiest way is to ring 01277 525 020 or email a schedule or drawings.

Get a price

Related advice

Washroom sealing around Victoria: points for this area

London offices and hotels normally can’t close all their washrooms at once, which is why the work is split into phases agreed in advance. The area within 2 miles of Victoria holds a good number of hotels. Each has en suites, back-of-house toilets and kitchens with sealant that moulds and splits. We work a handful of rooms at a time, so the hotel keeps letting the rest.

Customer toilets and staff facilities at retail sites such as Brompton Cross District Shopping Centre. (1 mile west of Victoria) need sealant that stays clean under heavy use. Halls of residence and teaching buildings at universities such as University of Notre Dame, 1.1 miles north-east of Victoria, are easiest to reseal during vacations.

Victoria is about 1 mile south of City of Westminster, in Greater London. Commercial clients in Victoria use us for work on washrooms and wet areas, as part of our coverage of Greater London. 764 places across Greater London fall within our area, Victoria among them.

Business premises anywhere in SW1V, SW1P and SW1X are within our area. For a building on Eaton Lane, Gerald Road and Wilton Road or nearby, send details and we will quote for washrooms and wet areas. Victoria sits on or close to the A202 and A302, which helps when planning parking and deliveries for the job. Sites close to Victoria are covered too, including Belgravia (1 mile north-west), Pimlico (1 mile south-east), Westminster (1 mile north-east), Millbank (1 mile north-east) and Brompton (1 mile west). Nearby towns on our patch include Shoreditch (4 miles north-east), Walthamstow (8 miles north-east), Hoxton (4 miles north-east), Whitechapel (4 miles north-east), Hampstead (4 miles north) and Ruislip (13 miles north-west).

Around Victoria

We work on buildings around Westminster Cathedral Choir School, Wetherspoons pub and Green Park and the streets around them. Also close by are Westminster City School (less than half a mile north-east) and London Library (0.9 miles north). Victoria has its own railway station: London Victoria station. Well-known places in the area include Baynard's Castle (2.2 miles north-east) and Harrods (0.9 miles west). Not far away are Ludgate Hill and St. James's Park Lake.

Map of Victoria © OpenStreetMap contributors

When to call us in Victoria

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.

Things that normally lead to an enquiry:

  • Panel joints letting water behind
  • Users noticing mouldy joints
  • Sealant laid over old silicone and now peeling
  • Gaps where vanity tops meet the wall

For a college such as Westminster Kingsway College, less than half a mile east of Victoria, half-term and summer give the windows for washroom work.

Questions to ask before you book

  • Their approach to joint depth and backing
  • How long is the guarantee, and what does it include?
  • Whether their applicators hold CSCS cards
  • How the joint faces will be prepared and primed

Questions to ask before you appoint anyone

Doing it in-house

What you see is the finished bead, but most of the work is hidden. Backing rod, primer where specified and a joint designed to move with the building are easy to get wrong without experience.

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.

Work for main contractors and building owners

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.

Hospitality, education, healthcare, office and retail clients book us directly too. The work is planned around how the building runs, so the building keeps working while we do.

What the job involves on each surface

Urinals and WC pans

Urinal backs, troughs and slab joints are resealed with sanitary silicone once the whole of the old bead has gone.

Healthcare and care settings

We phase washroom sealing so care areas are never left without facilities. Records you need can be confirmed with the quote.

Common questions from Victoria clients

Does a hotel in Victoria need to shut while its sealant is renewed?

Rarely. Rooms or floors are done in turn, so the rest of the hotel keeps trading. Tell us your quiet periods and access windows and we will plan around them.

Will you plan work around the academic year at somewhere like University of Notre Dame?

Yes. Education sites normally 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.

Do you have public liability insurance?

Yes. We’re fully insured, and the certificate can go with your quote.

How many days will you need on site?

The duration is planned around your programme and the access we are given. We will give you an estimate of time on site when we quote.

How do you choose the sealant?

The specification comes first, if there is one. If there isn’t one, it comes down to the joint: its movement, its surfaces and what it has to cope with.

Will cleaning remove black mould from sealant?

Surface cleaning won’t reach mould that has rooted into the bead. New anti-mould sanitary silicone is the treatment and check the ventilation isn’t the cause.

Will you quote for a small job?

Whatever the size, the process is the same: details, then a fixed price, then sealing, then a 12-month guarantee.

Accreditations

Trusted. Accredited. Insured.