The Mastic Doctor team standing beside their branded vans outside an office building
West Sussex · England

Commercial washroom and wet-area sealing in Westerton, West Sussex

We carry out sealing in commercial washrooms, showers, kitchens and wet areas in Westerton and the surrounding area. Send details for a fixed quote.

  • Resealing that didn’t last because the old bead stayed
  • Failed joints along IPS and cubicle panels
  • Urinal joints that look unhygienic
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed price, with what’s included set out clearly.
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 & Constructionline
£5m public liability

Washroom sealing across Westerton

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

General trades versus a specialist

What you see is the finished bead, but most of the work is hidden. Correct depth, the right primer and a sealant matched to the movement are easy to get wrong without experience.

A short, simple internal joint is often within reach of a maintenance team. The usual problems come from preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.

Washroom sealing in Westerton

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’ll plan around them. We work on IPS panels and cubicles, showers, trays and wet room floors and vanity units and basins, and the failures we are asked to look at most are complaints from staff, guests or users about tired washrooms and black mould inside silicone joints that cleaning can’t shift. Searching for sealant specialists in Westerton? Mastic Doctor has worked for contractors, FMs and building owners since 2005, CHAS accredited and a Constructionline member.

Smaller places such as Westerton still have commercial washrooms and kitchens: in halls, pubs, schools, care homes and farm-based businesses. Sealant that has gone black with mould normally can’t be cleaned, so it is cut out and replaced.

Every job is signed off with a 12-month guarantee. It’s a plain promise: if our work fails within that year, we put it right.

Location
Westerton (PO18)
Region
West Sussex
Guarantee
12 months on every job
Quotes
Quoted before any work starts
Phone
01277 525 020
Page updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

Aftercare for building managers

Keep the joints in good shape with a few simple steps:

  • Keep a record of which washrooms need attention
  • Include joints in routine washroom inspections
  • Tell us about infection-control or permit rules before we quote
  • Leave signs up until the cure time is over

If a joint we sealed fails within 12 months, tell us and we will look at it. Beyond that, regular checks keep small problems small.

A few failed joints can be resealed with hardly any disruption. Left, it tends to become a building-wide job with more phasing to plan.

Toilets, showers and kitchens around Westerton

At about 52 miles from central London, Westerton is within reach of the capital. Office washrooms on business parks see heavy weekday use, so we work a block of facilities at a time. The 2 miles around Westerton include two care or nursing homes. Assisted bathrooms and wet rooms in care settings need sanitary sealant that stays cleanable. Rooms are done a few at a time at times agreed with the home.

For a college such as Chichester College, 2.7 miles to the south-west of Westerton, half-term and summer give the windows for washroom work. For centre management at a site such as Summersdale Retail Park (1.8 miles west of Westerton), washroom work is planned around footfall.

Westerton is about 2 miles north-east of Chichester, in West Sussex. We cover commercial sites throughout Westerton, for single jobs and planned programmes alike. Westerton is one of 373 places we cover in West Sussex for washrooms and wet areas. We also cover Portsmouth, around 15 miles from Westerton.

If you need washroom sealing in PO18, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. Close to Westerton, our area also takes in Strettington (1 mile east), Waterbeach (1 mile north-east), Maudlin (1 mile south), Westhampnett (1 mile south-west) and Shopwyke (1 mile south). Nearby towns on our patch include Worthing (15 miles east), Bognor Regis (5 miles south-east), Selsey (9 miles south), Littlehampton (10 miles east), Rustington (11 miles east) and Storrington (14 miles east).

Local landmarks in Westerton

Around Westerton, our work takes us to commercial buildings near Chichester High School For Girls, Westbourne House School and The Coach And Horses Public House, among other places. The nearest railway station is Chichester station, roughly 2.5 miles south-west of the centre. A little further out are Chichester Castle (2 miles south-west) and Chichester Centre (1.5 miles south-west). Open spaces near Westerton include Kingley Vale National Nature Reserve and Levin Down.

Map of Westerton © OpenStreetMap contributors

When to call us in Westerton

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.

Typical triggers for a call:

  • Panel joints letting water behind
  • Failed sealant in a tea point or staff kitchen
  • Black mould inside silicone joints that cleaning can’t shift
  • Washrooms that look worn because of the sealant

Clinical washrooms at sites like St Richard's Hospital (1.6 miles south-west of Westerton) are scheduled with the ward so the room is out of use for as little time as possible.

What to look for in a quote

  • Who will actually carry out the work
  • Is the sealant right for the movement and the substrate?
  • How joint depth will be controlled
  • Their public liability cover

Questions to ask before you appoint anyone

Your questions answered

Do hotels near Westerton have to close for sealant work?

Almost never. The work is phased so most rooms stay available. The plan is built around your bookings.

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

Yes, holiday working periods are the norm on campus jobs. Let us know which documents your site asks for, and we’ll confirm them alongside the quote.

How long will the new sealant last?

It depends on movement, UV and weather, cleaning, traffic and the product. Sealant joints are maintenance items, so inspect them regularly.

How soon can a washroom be used after resealing?

Cure times vary by product and temperature. You’ll get a reopening time for each area before we leave it.

Do you use special sealant for toilets and showers?

Each area gets the grade that suits it. Washrooms and showers take anti-mould sanitary silicone while kitchens may need a food-safe grade.

Is Westerton in your area?

Yes. Westerton falls within our area, and the simplest way to start is to phone 01277 525 020 or use the quote form.

Will cleaning remove black mould from sealant?

Cleaning may lighten it, but the mould returns. New anti-mould sanitary silicone is the treatment and check the ventilation isn’t the cause.

What sealant work can’t fix

Honesty saves time and money. New sealant won’t cure:

  • A dripping waste or valve behind a panel
  • Vanity carcasses that have swollen
  • Failed tanking beneath a wet-room floor or behind tiles

Not sure which it is? You can ring 01277 525 020 or email a schedule or drawings and we will tell you honestly before you book.

What we seal

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

Quoting for work in Westerton

To price the job, we consider:

  • Specialist products, such as fire-rated or hygienic sealants
  • Site requirements such as inductions and permits
  • Phasing around occupants
  • Distance, for remote addresses

The work involved drives the cost: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a fixed quote.

What to include in your enquiry

A few photographs plus some basic facts will normally do. Please tell us:

  • Whether an asbestos survey exists
  • Specification clauses that apply
  • How the joints are reached, and at what height
  • Approximate linear metres or a joint schedule

We quote a fixed sum against the scope you give us, so you know the figure before anyone is on site. To ask for one, call the office on 01277 525 020 or use the quote form.

Our process

In a busy building, the work is phased so only one area is out of use at a time. Each section is protected, cleaned back and sealed before we move to the next. If others near Westerton need work, visits can be combined. A fixed quote is given before anything starts.

  1. Every room is surveyed and the failed joints listed.
  2. The fixed quote sets out the rooms, the products and the phasing.
  3. The whole of the old bead is removed.
  4. Joints are degreased and dried.
  5. New anti-mould sealant goes in and is tooled neat.
  6. Each area is handed back when ready.

Preparing the site

  • Arrange parking or a loading space
  • Agree which areas must stay open
  • Let building users know which areas are affected

Ask for a quote

A good quote starts with a clear picture: the joints involved, quantities, access and the product called for. Share whatever details you have and we will fill any gaps with a visit.

Ask for a quote

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