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

Washroom Sealing contractors in Bexley

We carry out sealing in commercial washrooms, showers, kitchens and wet areas in Bexley. Send photos or drawings for a fixed quote.

  • Users noticing mouldy joints
  • Panel joints letting water behind
  • Failed sealant behind washroom basins
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
CHAS accredited
Fully insured: £5m PL

Washroom sealing across Bexley

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

Building owners, agents and FMs in Bexley

Building owners and managing agents use us on everything from one building to a spread of sites. Several sites can go on one quote, so there’s one set of paperwork to deal with.

Housing associations and managing agents often need work done across blocks and communal areas. We phase the work so people keep access, with each stage agreed with your site contact.

Washroom sealing in Bexley, done properly

From one staff toilet in Bexley to washrooms across a whole estate, the route is the same: details first, then a fixed quote, then the work, then the 12-month guarantee. Photos and a rough count of basins, urinals, showers and cubicles help us give a quick quote and a site visit is an option. We work on showers, trays and wet room floors, IPS panels and cubicles and kitchens and tea points, and what we are called in for most is users noticing mouldy joints and urinal joints that look unhygienic. One point of contact handles commercial sealant work in Bexley from the first photos to the final walk-round, whether it’s one building or several.

In a London area such as Bexley, commercial washrooms in offices, hotels and leisure buildings see constant use. 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 workmanship is guaranteed for 12 months, wherever the site is. If a joint we sealed fails because of how it was installed, we come back and put it right.

Where
Bexley (DA5, DA6, DA14, DA1)
Wider area
Greater London
Guarantee
12 months on our workmanship
Price
Quoted before any work starts
Telephone
01277 525 020
Last updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

Why it’s worth doing now in Bexley

A failed joint behind a basin or along a shower tray lets water run where it shouldn’t. In a commercial building that can mean damaged boards, stained ceilings on the floor below and odours, and fixing that takes far more work than resealing. 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.

Larger quantities, tricky access or phasing all shape the price. So do site requirements such as inductions and permits, along with the time of year for external work.

What you get with us

  • Colours chosen to suit frames, cladding or finishes where possible
  • Failed material removed, not covered up
  • A range of standard colours, depending on the product
  • Commercial sealant work since 2005

Take a look at what affects the cost and how we’re accredited.

How a job runs

Working in a building that stays open takes some planning. We sign and contain the area we are in, keep walkways clear and work section by section so the rest of the building stays in use. All of Greater London is in the ULEZ, and kerbside space in Bexley can be scarce. Let us know about any on-site parking or loading arrangements when you send the job details.

  1. We start by inspecting the fittings and joints and flagging problems sealant can’t solve.
  2. The phasing is agreed so there are always facilities open.
  3. We strip out the old bead and clean off the residue left behind.
  4. Each joint is degreased and left dry, because silicone won’t bond to damp or soapy surfaces.
  5. We lay a sanitary silicone bead and tool it smooth so it is easy to clean.
  6. Each room is handed back once the sealant has had its cure time.

Preparing the site

  • Tell us your opening times and when work is allowed
  • Agree which areas must stay open
  • Let building users know which areas are affected

Request a quote

The quickest route to a quote is a few photos and the site postcode. Upload them with the quote form, or call the office on 01277 525 020 or use the quote form to discuss it first.

Ask for a quote

Advice

Different surfaces, different methods

Healthcare and care settings

Assisted bathrooms and accessible toilets get heavy use, so their joints often need renewing sooner.

IPS and cubicle panels

Panel systems meet walls, floors and vanity tops at sealed joints. They stop water reaching the panel boards.

When something else is needed

A proper diagnosis includes knowing what sealant can’t do. We’ll tell you if the real problem is one of these:

  • Swollen or delaminated boards behind panels or vanity tops
  • Leaking pipes, traps, wastes or cisterns, which need a plumber
  • Failed tanking beneath a wet-room floor or behind tiles

If in doubt, phone 01277 525 020 or send details through our quote form and we will say what we think.

Surfaces we seal

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

Looking after the joints

Regular inspection catches problems early. Specifically:

  • Keep washrooms out of use until we say the sealant has cured
  • Squeegee showers and trays after busy periods
  • Keep a record of which washrooms need attention
  • Brief cleaning staff to treat joints gently

Ask your cleaning team to use gentle products and soft cloths on sealant. Aggressive descalers, solvents and scouring pads shorten its life over time.

Water getting behind IPS panels and vanity units can swell the boards. Once that happens, a reseal won’t fix them.

Washroom sealing in Bexley: the local picture

There are a number of hotels within about 2 miles of Bexley. Hotel en suites take daily use, and tired silicone at trays and basins is one of the first things guests notice. Seven care or nursing homes sit less than 2 miles from Bexley. In a care setting, a mouldy or lifting joint in a wet room is a hygiene issue as much as a cosmetic one. Work is agreed with the manager, around residents’ routines.

Office toilets at parks like Old Bexley Business Park (to the east of Bexley) take steady weekday use, and mouldy silicone soon shows. At a university such as University of Greenwich Avery Hill Campus, 2.5 miles to the west of Bexley, summer is the usual window for resealing residence bathrooms. At a college such as Rose Bruford College, which lies west of Bexley, washroom and kitchen sealant is best renewed in the holidays or in phases during term.

Bexley is about 3 miles east of Eltham, in Greater London. We cover commercial sites throughout Bexley, whether it’s a single job or part of a planned programme. Across Greater London, 764 places are covered, Bexley among them. For work in that direction, see our London page.

Commercial sites across DA5, DA6, DA14 and DA1 are covered for washrooms and wet areas. For a building on Bexley High Street, Camden Road and The North Glade or nearby, we can quote for washrooms and wet areas. With the A2018 and B2210 nearby, Bexley is easy to get to with materials and equipment. Sites close to Bexley are covered too, including Blendon (1 mile north-west), North Cray (1 mile south), Bexleyheath (1 mile north), Upton (1 mile north) and Coldblow (1 mile east). Further afield, our area takes in London (11 miles west), City of Westminster (13 miles west), Marylebone (13 miles north-west), Kensington (15 miles west), St Pancras (12 miles north-west) and Shoreditch (11 miles north-west).

What’s near Bexley

In Bexley, that means premises near St Columba's Catholic Boys' School, Danson Park and Townley Grammar School, among other places. The nearest railway station is Bexley station, about 0.6 miles east of the centre. Other landmarks nearby include Broadway Shopping Centre (1 mile north-east) and Bexley Museum (1.1 miles east). Open spaces near Bexley include Summer Hill and Wansunt Pit.

Map of Bexley © OpenStreetMap contributors

Questions about Bexley

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

Rarely. Rooms or floors are done in turn, so the rest of the hotel keeps trading. We agree the order of rooms and the timings with you before we start.

Can you work in a care home near Bexley with residents in?

Yes, with the manager deciding the order and timing of rooms. Any site rules, from signing in to infection control, are agreed before we start.

Do you guarantee washroom sealing?

Our workmanship has a 12-month guarantee backed by public liability insurance.

Are you CHAS accredited?

Yes. CHAS accredited, Constructionline member, and our applicators hold CSCS cards.

Is it OK to put new silicone on top of the old?

We always remove it. Fresh silicone can’t key to an old bead so a bead over the top fails quickly.

Is Bexley in your area?

Yes. Sites across Bexley are covered.

Are your applicators CSCS-carded?

Yes. If you need card details for site access, let us know and we will send them with the quote.

Accreditations

Trusted. Accredited. Insured.