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

Washroom Sealing contractors in Sittingbourne

Planning work on a washroom in Sittingbourne? We assess it, carry out the work and guarantee our workmanship for 12 months.

  • Gaps where vanity tops meet the wall
  • Sealant lifting along a tray edge
  • Washrooms that look worn because of the sealant
1
Send details
Send the specification, photos or a marked-up plan.
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
12-month guarantee on our workmanship.
Covering the South East & Scotland
CHAS accredited
£5m PL insurance

Washroom sealing across Sittingbourne

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

What we can’t put right

Not every problem is a sealant problem, and we’d rather tell you before you spend money. These need a different solution:

  • Leaking pipes, traps, wastes or cisterns, which need a plumber
  • Failed tanking beneath a wet-room floor or behind tiles
  • Hollow tiles or loose panels behind the joint

If you’re not sure, just phone 01277 525 020 or send details through our quote form and we’ll give you a straight answer.

What we seal

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

About our washroom sealing in Sittingbourne

Washroom joints need the right sealant, not whatever is to hand. Sanitary grades carry anti-mould additives, and neutral-cure types are used where acetoxy silicone could attack some metals, stone or mirror backings. In food areas, hygienic or food-safe sealants are used where food contact is possible. Site teams most often ask us about black mould inside silicone joints that cleaning can’t shift and users noticing mouldy joints, across kitchens and tea points, urinals and WCs and showers, trays and wet room floors. Most enquiries from Sittingbourne start with one failed joint and grow into a wider look at the building: we look at the rest while we’re there and tell you what we find.

Pubs, restaurants and cafés in a town like Sittingbourne have kitchens and customer toilets that need smooth, sealed joints. Environmental health officers look at cleanability, and a sound sanitary or hygienic sealant is part of that.

We stand by our work with a 12-month guarantee. It covers how we prepared and applied the sealant, and we come back if anything isn’t right.

Where
Sittingbourne (ME10, ME9)
Region
Kent
Guarantee
12 months on our workmanship
Price
Quoted before any work starts
Call
01277 525 020
Page updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

When to call us in Sittingbourne

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:

  • Shower tray joints that have opened up
  • Failed sealant behind washroom basins
  • Kitchen worktop joints that can’t be kept clean
  • Panel joints letting water behind

At a hospital like Sittingbourne Memorial Hospital, 0.6 miles south of Sittingbourne, patient and staff washrooms are best done in short phases agreed with the ward.

Before you book anyone

  • How they handle RAMS and site documents
  • Will failed sealant be removed rather than covered?
  • What the guarantee covers, and for how long
  • Is depth set with backing rod, or bond-breaker tape in shallow joints?

How to choose a sealant contractor

FAQs: Sittingbourne

Will our hotel in Sittingbourne need to close for the work?

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.

Is a hospital such as Sittingbourne Memorial Hospital somewhere you can work?

Yes, hospitals are one of the sectors we cover. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.

Can you clean the mould off instead of resealing?

Cleaning may lighten it, but the mould returns. We replace the sealant with an anti-mould sanitary grade and point out if ventilation is part of the problem.

Are you insured?

Yes. We are fully insured, including public liability cover.

Does the weather affect the work?

It can, for external work. Sealant won’t bond properly to a wet or frosty joint, so external work may be moved if conditions aren’t right. Internal work is far less affected.

Do you phase washroom resealing?

Only the area we’re working in is closed. Rooms go back into use once the sealant has cured and we start the next.

Do your applicators hold CSCS cards?

Yes. Should the site need card details in advance, tell us and we’ll confirm them with the quote.

Busy facilities in and around Sittingbourne

The sea is no more than about 2 miles from Sittingbourne, and coastal places often have hotels, guest houses and holiday accommodation with busy seasons. Washrooms used guest after guest wear their sanitary silicone faster, which is why off-season resealing makes sense. Central London is about 37 miles from Sittingbourne. Office washrooms on business parks see heavy weekday use, and resealing in phases keeps facilities available.

Church halls and community buildings, such as those at Church of the Holy Trinity, have kitchens and toilets used by many groups, and their sanitary sealant works hard. Hotels such as The Bull Hotel, less than half a mile to the south-east of Sittingbourne, have en suite bathrooms where tired silicone at the bath, tray and basin is replaced room by room.

Sittingbourne is about 37 miles east of London, in Kent. We cover Sittingbourne and the rest of Kent, with the same fixed quotes and 12-month guarantee as everywhere else. 931 places across Kent fall within our area, Sittingbourne among them. London is covered too, some 37 miles away.

Postcode districts covered here: ME10 and ME9 for washrooms and wet areas. Among the streets we cover are High Street, Roman Square and Moonstone Square, and sites on any of them can send details for a fixed quote. Sittingbourne sits on or close to the A2 and A249, useful when we plan access and materials. Sites close to Sittingbourne are covered too, including Murston (1 mile east), Milton Regis (1 mile north-east), Kemsley (1 mile north), Howt Green (1 mile north-west) and Heart's Delight (1 mile south-west). Nearby towns on our patch include Maidstone (10 miles south-west), Ashford (15 miles south), Whitstable (13 miles east), Faversham (7 miles east), Minster (6 miles north-east) and Kings Hill (15 miles west). Sittingbourne is one of the busier places in Kent, and its commercial and public buildings are all within our area.

Near you in Sittingbourne

In Sittingbourne, that means premises near Milton Court Primary Academy, The Golden Hope pub and Milton Creek Country Park. There’s a railway station in Sittingbourne itself: Sittingbourne station. Well-known places in the area include Bayford Court (less than half a mile east) and Court Hall Museum (under half a mile north).

Map of Sittingbourne © OpenStreetMap contributors

What affects the price in Sittingbourne

To price the job, we consider:

  • Any access equipment needed
  • The total length or number of joints
  • Location, for remote and island sites
  • Working within restricted access windows

No two sites price the same: the joint sizes, the specified product, access and working hours each have a bearing. Send the details and a fixed figure follows.

What we need to price the job

Good information means a firmer quote. When you get in touch, include:

  • Drawings or a marked-up plan, if available
  • A wide shot and a close-up of the area
  • The postcode of the building
  • Asbestos survey details if the building is older

To get a fixed quote, phone 01277 525 020 or send details through our quote form with the site address and an outline of the work. You can also send details through our quote form.

Different surfaces, different methods

Basins and vanity tops

Stone and some composite tops need a neutral-cure sealant and we choose a neutral-cure grade for them.

Urinals and WC pans

Floor joints around WC pans are often forgotten. They are checked with everything else.

Work for main contractors and building owners

FMs need a contractor who is easy to get on site. Tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we will confirm with the quote.

Hotels, schools, healthcare sites, offices and retail units come to us directly as well. We plan around the way the building is used, so guests, pupils, patients or staff are disturbed as little as possible.

On site: what to expect

At the end of each section, the masking comes off, the area is cleaned and every joint is checked. Where the sealant needs time to cure before use, we tell you and sign the area. For a town like Sittingbourne, we try to group jobs for the same client into one visit, with one quote covering them. Give us your access times and we will fit the work in.

  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 give you a reopening time for every room.

Preparing the site

  • Explain the parking and delivery arrangements
  • Point out any areas we must not close
  • Warn occupants and staff about the work

Ask for a quote

Photos, drawings or a schedule of the joints are often enough for a fixed quote. If the job needs a look first, we will arrange a site visit.

Ask for a quote

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