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

Washroom Sealing in Greatness

Sealing in commercial washrooms, showers, kitchens and wet areas in Greatness and across Kent. CHAS accredited and fully insured, with a 12-month guarantee.

  • Resealing that didn’t last because the old bead stayed
  • Gaps where vanity tops meet the wall
  • Complaints from staff, guests or users about tired washrooms
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
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Signed off, with 12 months’ guarantee.
South East, London & Scotland
CHAS accredited
£5m PL insurance

Washroom sealing across Greatness

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

Commercial washrooms in Greatness

Greatness lies roughly 19 miles out from central London. Office washrooms on business parks see heavy weekday use, so we phase work to keep some facilities open. A 2-mile radius around Greatness takes in several hotels. En suite bathrooms, staff changing rooms and kitchens all need their sanitary silicone renewed in time. We work a handful of rooms at a time, so the hotel keeps letting the rest.

At a hospital like Sevenoaks Hospital (under half a mile south-west of Greatness), patient and staff washrooms are best done in short phases agreed with the ward. At a school such as St John's Church of England Primary School, changing rooms and kitchens need cleanable joints as much as the toilets. Office toilets at parks like Bat & Ball Enterprise Centre, under half a mile north-west of Greatness, take steady weekday use, and mouldy silicone soon shows.

Greatness is about 1 mile north-east of Sevenoaks, in Kent. Looking for washroom sealing in Greatness? We can help. Across Kent, 931 places are covered, Greatness among them. For work in that direction, see our London page (19 miles or so).

Commercial sites across TN13, TN14 and TN15 are covered. If your site is on Seal Road, Mill Lane and Sandy Lane or close by, send details and we’ll quote for washrooms and wet areas. We also cover Seal (1 mile east), Godden Green (2 miles south-east), Styants Bottom (3 miles east), Bitchet Green (3 miles south-east) and Stone Street (3 miles south-east). Bigger towns within reach include Maidstone (14 miles east), Dartford (11 miles north), Royal Tunbridge Wells (11 miles south), Gravesend (12 miles north-east), Tonbridge (7 miles south-east) and Northfleet (12 miles north-east).

Near you in Greatness

Around Greatness, our work takes us to commercial buildings near The Old Bat and Ball pub, Wildernesse School and Knole Academy and the streets around them. There’s a railway station in Greatness itself: Bat & Ball station. Other landmarks nearby include Sevenoaks Museum (1.3 miles south) and Kemsing Castle Bank (1.7 miles north-east). For a walk, there’s Dryhill Nature Reserve.

Map of Greatness © OpenStreetMap contributors

Washroom sealing in Greatness

For clinics, hospitals and care homes, sealed joints matter for infection control as much as appearance. We work to your organisation’s estates and infection-control requirements and any site permits. Tell us what records you need and we will confirm with the quote. Site teams most often ask us about split or peeling sealant at shower trays and stained or open joints at kitchen sinks and worktops, on vanity units and basins, kitchens and tea points and IPS panels and cubicles. Whether you call it commercial sealant work, mastic application or joint sealing, in Greatness it comes down to the same thing: the right product in a properly prepared joint.

Jobs in a smaller place such as Greatness are often one building: a school’s toilets, a café kitchen, a surgery’s washrooms. Photos of each area help us plan the visit and bring the right sealant.

Whoever the client is, the cover is the same: a 12-month guarantee on our workmanship. Faults in the structure, damage and other trades’ work fall outside it, and we say so plainly.

Place
Greatness (TN13, TN14, TN15)
Region
Kent
Cover
12 months on every job
Quote
Quoted before any work starts
Call
01277 525 020
Updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Our process

Where the site stays busy, we agree a sequence with your contact so the disruption stays in one area at once. Each area is protected, prepared and sealed, then reopened once the sealant allows before we move to the next. What matters most for a job in Greatness is a clear list of what needs doing. A fixed quote follows.

  1. We agree which washrooms close and when.
  2. Leaks, loose panels or damp are pointed out first.
  3. Failed sealant and residue are stripped out.
  4. The right sanitary or food-safe sealant is applied.
  5. We confirm reopening times for each washroom.

Getting the site ready

  • Share your working hours and any access restrictions
  • Tell us which areas need to stay in use
  • Make sure the joints can be reached

Get a fixed quote

Pricing a project or setting a maintenance budget? We’ll quote against your scope and drawings you can plan around. If you have questions first, phone 01277 525 020 or send photos by email.

Get a quick quote

Related advice

FAQs: Greatness

Is Greatness too far out for you?

No. Small places get the same service as large ones. We work across Greater London and the South East. We plan jobs in smaller places so return trips are kept to a minimum.

Is hospital work, at somewhere like Sevenoaks Hospital, something you do?

Yes. We work in healthcare settings as well as offices and schools. Work is phased so departments keep running, under the site’s own rules.

Do you work to architects’ specifications?

Yes. Include it with the drawings when you ask for a quote, and the quote will be based on it, flagging anything that needs clarifying.

Can weather delay the job?

Outside, yes. The joint has to be dry and within the product’s temperature range, so damp, frosty or very cold days can stop external work. Inside work is seldom held up.

Is old silicone taken out first?

The whole of the old bead is removed and the surfaces cleaned before resealing. It’s the difference between a joint that lasts and one that peels.

How long does a job like this take?

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

Do you take on small jobs?

Single areas, one-off repairs and whole buildings are all quoted the same way: send details, get a fixed quote, we seal, guaranteed.

Surface by surface

Urinals and WC pans

Urinal backs, troughs and slab joints are resealed with sanitary silicone after the old bead and residue are removed.

IPS and cubicle panels

Swollen or delaminated boards need replacing and we’ll point out any we see.

Work for main contractors and building owners

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.

When you manage a building on behalf of an owner, clear figures and clear communication matter. You get a fixed quote, an agreed scope and a walk round at the end.

How the quote is worked out

We price every job individually. The main factors are:

  • Joint width, depth and condition
  • Location, for remote and island sites
  • The total length or number of joints
  • Working within restricted access windows

There’s no price list, 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.

Details that help us quote

A good diagnosis starts with the right details. Tell us:

  • Approximate linear metres or a joint schedule
  • The asbestos register, for older buildings
  • The postcode of the building
  • Anything awkward about access or site hours

Tell us about the building, the joints and when you need the work done, and a fixed quote will follow. The easiest way is to give us a call on 01277 525 020 or send photos by email.

Why act early in Greatness

Water gets behind panels and under floors through a failed joint. That can lead to swollen boards, marked ceilings below and lingering smells which costs more to fix than a reseal. For buildings in places like Greatness, one well-planned visit beats several small ones, so we’d suggest renewing all the joints that are going, not just the worst.

Small jobs and large programmes are priced from the same things: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote and we will put a fixed figure on it.

Why us?

  • Workmanship guaranteed for 12 months
  • Products installed to the manufacturer’s instructions
  • Work carried out by CSCS-carded applicators
  • Clear, fixed quotes

See our cost guide or our accreditations and insurance.

When it isn’t the sealant

Sealant solves a lot, but not everything, and we are upfront when that’s the case. These need a different solution:

  • Condensation from failed extract fans
  • Failed tanking beneath a wet-room floor or behind tiles
  • Leaking pipes, traps, wastes or cisterns, which need a plumber

If in doubt, give us a call on 01277 525 020 or send photos by email and we will say what we think before you book.

What we seal

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

Trusted. Accredited. Insured.