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

Washroom Sealing in Highgate

Commercial sealant work in Highgate for contractors, FMs and building owners: sealing in commercial washrooms, showers, kitchens and wet areas, with a fixed quote first.

  • Resealing that didn’t last because the old bead stayed
  • Panel joints letting water behind
  • Users noticing mouldy joints
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
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
Fully insured: £5m PL

Washroom sealing for businesses in Highgate

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

How the quote is worked out

A fixed quote reflects the actual work. It allows for:

  • The site’s rules and procedures
  • Travel to remote or island sites
  • Quantities, in metres or numbers
  • Joint width, depth and condition

Pricing washrooms and wet areas depends on quantities, condition and access, and any specification that applies. Ask us for a fixed quote.

Details that help us quote

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

  • What the building is and how it’s used
  • The site address and postcode
  • Anything awkward about access or site hours
  • Asbestos survey details if the building is older

Let us know the site, the scope and your timescale, and a fixed quote will follow. To get it moving, phone 01277 525 020 or email us.

Washroom sealing in Highgate, done properly

You can’t shut every toilet in an office, school or hotel at once. Work is phased by room or by section, so there are always facilities in use. Tell us your site hours and access windows and we will plan around them. If you have urinal joints that look unhygienic and mould spotting along silicone joints, we can help. A specialist sealant contractor works differently from a general builder: on jobs in Highgate, preparation and product choice get the time they need.

Building managers in Highgate typically need some facilities open throughout. We work through washrooms floor by floor or core by core, at times agreed with you, so staff and visitors can always find an open washroom.

Every job is signed 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
Highgate (N6, N19, NW5)
Region
Greater London
Cover
12 months on every job
Quote
Fixed quote, scope in writing
Telephone
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

Toilets, showers and kitchens around Highgate

Six care or nursing homes sit less than 2 miles from Highgate. In a care setting, a mouldy or lifting joint in a wet room is a hygiene issue as much as a cosmetic one. Rooms are done a few at a time at times agreed with the home. A London building with hundreds of occupants can’t lose every washroom for a day, which is why the work is split into phases agreed in advance.

Toilets at colleges like St. Giles College, 0.5 miles to the north-east of Highgate, take heavy use from students and staff alike. On an industrial estate such as Bush Industrial Estate, 0.9 miles to the south-east of Highgate, staff toilets, showers and canteens are where sanitary sealant takes the most wear.

Highgate is about 2 miles north-east of Hampstead, in Greater London. Highgate sits inside our coverage and the rest of Greater London, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Our Greater London coverage takes in 764 places.

Postcode districts covered here: N6, N19 and NW5 for washrooms and wet areas. Streets here include Wood Lane, Grange Road and Talbot Road, and sites on any of them can send details for a fixed quote. We also cover Upper Holloway (1 mile south-east), Dartmouth Park (1 mile south), Lissenden Gardens (1 mile south), Crouch End (1 mile north-east) and Tufnell Park (1 mile south-east) for washrooms and wet areas. Further afield, our area takes in London (5 miles south-east), City of Westminster (4 miles south), Marylebone (4 miles south), Kensington (6 miles south-west), St Pancras (3 miles south) and Shoreditch (4 miles south-east).

Around Highgate

In Highgate, that means premises near The Angel Inn, St Aloysius RC College and Whittington Park and the streets around them. The nearest railway station is Upper Holloway station, about 0.9 miles south-east. Other landmarks nearby include Highgate Private Hospital (0.6 miles north-west) and Montfichet's Tower (4.4 miles south-east). For a walk, there’s Darland's Lake and Parkland Walk.

Map of Highgate © OpenStreetMap contributors

Highgate: questions and answers

Must a hotel around Highgate close while you work?

Rarely, if ever. We take a few rooms out at a time. Housekeeping and our team agree each day’s rooms.

Do you take on jobs in Highgate where loading and access are tightly controlled?

Yes. Inductions, permits and timed loading are routine for us in London. The building manager’s rules go straight into our method. We allow for the ULEZ, which covers every borough

How many days will you need on site?

We plan the time on site around your programme and access. We’ll give you an estimate of time on site when we quote.

Are you insured?

Yes. Our insurance certificate can be sent alongside the quote.

Can you handle several sites?

Yes. A group of buildings can go on one quote, with one point of contact.

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: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.

Do you phase washroom resealing?

We phase it so users always have somewhere to go. One washroom, one bank of cubicles or one changing room is done at a time around your site hours and access windows.

Commercial clients in Highgate

As a CHAS accredited contractor and Constructionline member, we make supplier vetting simple. We are fully insured, and our insurance certificate can go with the quote.

We take on planned maintenance as well as one-off repairs: working through a building or an estate in stages that fit your budget. Sites in Highgate can sit alongside others in a wider programme.

On site: what to expect

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 usually takes a few hours for one toilet block, with bigger buildings phased across a number of visits. For a job in Highgate, access comes first. Send the building rules and access times with your enquiry.

  1. We survey each room, count the joints and note anything behind them that needs another trade.
  2. A phasing plan keeps part of the building’s facilities in use at all times.
  3. We strip out the old bead and clean off the residue left behind.
  4. We clean and dry every surface so the new sealant can grip.
  5. A bead of anti-mould sanitary silicone goes in and is tooled to a smooth, cleanable profile.
  6. You get a reopening time for every room, with signage left up until then.

What we need from you

  • Send asbestos survey details if the building is pre-2000
  • Confirm the product named in the specification
  • Arrange parking or a loading space

Ask for a quote

Specifications, drawings and tender packages are welcome with any enquiry, and we’ll price the work to it. For smaller jobs, photographs and a description will do.

Get a quick quote

Read more

When to call us in Highgate

Daily commercial cleaning wears sealant faster than people expect. Harsh products, abrasive pads and pressure washing break down a joint’s surface and edges so grime sticks to the damaged surface.

If one of these sounds familiar, it’s time for a closer look:

  • Split or peeling sealant at shower trays
  • Complaints from staff, guests or users about tired washrooms
  • A new bead over an old one coming away
  • Discoloured joints around urinals and WC pans

For centre management at a site such as Arena Shopping Park, which lies east of Highgate, washroom work is planned around footfall.

Questions to ask before you book

  • What level of public liability insurance do they hold?
  • Their approach to joint depth and backing
  • The terms of the workmanship guarantee
  • How the existing material will be dealt with

Our contractor checklist

Different surfaces, different methods

IPS and cubicle panels

Panel systems meet walls, floors and vanity tops at sealed joints. Those joints protect the boards behind from water.

Basins and vanity tops

Basin joints get wet every time someone washes their hands, so the joint to the wall and around each bowl fails early. They are resealed with anti-mould sanitary silicone.

When something else is needed

Before quoting, we check that sealant is the right answer. It isn’t the answer for:

  • A room that stays damp because ventilation isn’t working
  • Panel boards already damaged by water
  • Loose panels, vanity units or tiles, which need fixing first

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

What we seal

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

Trusted. Accredited. Insured.