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

Washroom Sealing in London Fields

We carry out sealing in commercial washrooms, showers, kitchens and wet areas in London Fields. Send details for a fixed quote.

  • Stained sealant around pans and urinals
  • Washrooms that look worn because of the sealant
  • Panel joints letting water behind
1
Send details
Photos, drawings or a schedule, or we visit.
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
Our workmanship is guaranteed for 12 months.
Covering the South East & Scotland
CHAS & Constructionline
£5m PL insurance

Washroom sealing for businesses in London Fields

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

London Fields: questions and answers

Will our hotel in London Fields need to close for the work?

Almost never. The work is phased so most rooms stay available. Housekeeping and our team agree each day’s rooms.

Would you work within a site like Homerton University Hospital?

Yes. We work in healthcare settings as well as offices and schools. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.

How do you deal with asbestos in old sealant?

Asbestos is possible in some older mastics, particularly in buildings from before 2000. Before we disturb old sealant in an older building, we ask to see the asbestos register or survey, and if asbestos is suspected, work stops until it’s tested. We don’t remove asbestos-containing materials.

How long do sealant joints last?

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

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 point out if ventilation is part of the problem.

Which silicone is right for commercial washrooms?

Sanitary silicone with anti-mould additives for most washroom joints. Neutral-cure grades are used where acetoxy types could mark metals, stone or mirror backings.

Can you work to our specification?

Yes. The specification and the manufacturer’s installation guidance are what we work to, and we raise anything unclear before work begins.

About our washroom sealing in London Fields

Black spotting along a sealant bead is not a cleaning problem. The mould has rooted into the silicone itself, which is why it comes back however often it is treated. Replacing the bead is the lasting treatment. The enquiries we see most involve split or peeling sealant at shower trays and open joints at the base of cubicle panels, across kitchens and tea points, vanity units and basins and urinals and WCs. A specialist sealant contractor works differently from a general builder: in London Fields, 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.

The 12-month guarantee is for workmanship rather than 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.

Where
London Fields (E8, E2, E9)
Region
Greater London
Guarantee
12 months on our workmanship
Price
Fixed quote, scope in writing
Telephone
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Sanitary sealant for London Fields buildings

14 care or nursing homes sit less than 2 miles from London Fields. In a care setting, a mouldy or lifting joint in a wet room is a hygiene issue as much as a cosmetic one. Each room is kept out of use only as long as the sealant needs. Plenty of hotels sit less than 2 miles from London Fields. Behind every hotel door there’s a bathroom whose sealant will need renewing sooner or later. The work can go floor by floor, agreed with housekeeping.

At a university such as Queen Mary University of London, 1.4 miles to the south-east of London Fields, summer is the usual window for resealing residence bathrooms. Toilets at colleges like New City College, 1.1 miles to the south-west of London Fields, take heavy use from students and staff alike. Welfare facilities in units on estates such as Bayford Street Industrial Centre (to the east of London Fields) have showers, toilets and kitchens with sealant that works hard.

London Fields is about 1 mile east of Hoxton, in Greater London. Our applicators travel to London Fields for work on washrooms and wet areas, handled exactly as we handle every other area. Our Greater London coverage takes in 764 places.

We cover the E8, E2 and E9 postcode districts for washrooms and wet areas. Streets here include Tudor Road, Forest Road and Duncan Road. London Fields sits on or close to the A1207. If your building is just outside London Fields, we cover Hackney Central (1 mile north), Cambridge Heath (1 mile south-east), Dalston (1 mile north-west), Hackney (1 mile north-east) and Kingsland (1 mile north-west). A short drive away, we cover London (3 miles south-west), City of Westminster (4 miles south-west), Marylebone (4 miles south-west), Kensington (7 miles south-west), St Pancras (3 miles west) and Walthamstow (4 miles north-east).

Local landmarks in London Fields

Around London Fields, our work takes us to commercial buildings near The Urswick School, Haggerston Park and Bishopsgate Institute Special Collections and Archives. You’ll also find The Dolphin pub (less than half a mile east) and The Urswick School - A Church of England Secondary School (under half a mile north-east). London Fields has its own railway station: London Fields station. Well-known places in the area include German Hospital (0.6 miles north-west) and Hackney Walk (0.7 miles north-east). For a walk, there’s Old Ford Island and Tower Hill.

Map of London Fields © OpenStreetMap contributors

What sealant work can’t fix

Part of a good diagnosis is knowing where sealant stops. You’ll hear from us if the cause turns out to be any of the following:

  • Leaking pipes, traps, wastes or cisterns, which need a plumber
  • Loose panels, vanity units or tiles, which need fixing first
  • Panel boards already damaged by water

If you’re not sure, just speak to us on 01277 525 020 or send details through our quote form and we’ll give you a straight answer before you book.

Where we work in London Fields

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

When to bring in a specialist

Putting right a botched joint often costs more than sealing it well at the start, because the whole bead must be removed and the faces cleaned back again. That’s why many clients bring in a specialist from the beginning.

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

Quoting for work in London Fields

We price every job individually. The main factors are:

  • Phasing around occupants
  • Backing rod, priming and other preparation
  • Which sealant the job calls for
  • Removal of failed or old sealant

What a job costs comes down to how many linear metres there are, what has to come out first and how the joints are reached. Call for a quote once you have the details.

What we need to price the job

The more we know, the firmer the quote. When you get in touch, include:

  • The site address and postcode
  • Access details, including height
  • Whether the building will be occupied during the work
  • Approximate linear metres or a joint schedule

Quotes are fixed against the scope you send, so you know the figure before anyone is on site. To start the process, speak to us on 01277 525 020 or email us.

Aftercare for building managers

Your facilities or cleaning team can help the joints last. Pass these on to them:

  • Keep washrooms out of use until we say the sealant has cured
  • Act on the first split you see at a shower tray
  • Clear standing water from shower floors where possible
  • Avoid scourers and harsh descalers on silicone

Mild cleaning products and non-abrasive cloths look after sanitary silicone best. Aggressive descalers, solvents and scouring pads shorten its life and give mould a start.

Small numbers of failed joints are quick to phase in. Left, it tends to become a building-wide job and more closures to manage.

Why deal with it now?

Washrooms shape how visitors judge a building. Visitors notice black sealant even when the room is otherwise spotless. Resealing is a modest task with a very visible payoff. Access in London is hard enough to arrange once, so while access is arranged it pays to renew all failing joints, not just the worst.

We don’t publish prices, because the scope varies so much from one building to the next. For a fixed figure, call for a quote and we will price your job on its own details.

Why clients in London Fields choose us

  • RAL and finish matching where the product range allows
  • Colours confirmed for the specified product
  • Specification-led, product-correct work
  • Health and safety: CHAS accredited

Read our cost guide or our accreditations.

Our process

We begin with a short walk round with whoever looks after the building, to confirm the scope, the order of work and any areas we must keep clear. Then we strip out anything that has failed, prepare every joint and seal it. Planning a London job such as one in London Fields starts with access. Give us the hours we can be on site and we will schedule to suit.

  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.

Before we start on site

  • For older buildings, check the asbestos register before work
  • Share your working hours and any access restrictions
  • Send any specification or drawings in advance

Quotes

If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price the work to it. For smaller jobs, photos and a description will do.

Get a quick quote

Read more

Accreditations

Trusted. Accredited. Insured.