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

Washroom Sealing in Dunk's Green

Work needed on a washroom in Dunk's Green? We assess it, carry out the work and guarantee our workmanship for 12 months.

  • Sealant laid over old silicone and now peeling
  • Complaints from staff, guests or users about tired washrooms
  • Failed sealant behind washroom basins
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
12-month guarantee on our workmanship.
South East, London & Scotland
Constructionline member
£5m public liability

Washroom sealing for Dunk's Green sites

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

General trades versus a specialist

What you see is the finished bead, but most of the work is hidden. Backing rod, primer where specified and a joint designed to move with the building are easy to get wrong without experience.

Putting right a botched joint often costs more than sealing it well at the start, since all of it has to come out and the faces be cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.

About our washroom sealing in Dunk's Green

Closing all the facilities in a building isn’t an option. We phase the work one washroom, one bank of cubicles or one changing room at a time, so staff, guests or pupils always have somewhere to go. Give us your site hours and access windows and the phasing is planned around them. We work on vanity units and basins, accessible toilets and changing rooms and showers, trays and wet room floors, and the failures we are asked to look at most are sealant lifting along a tray edge and sealant laid over old silicone and now peeling. Looking for mastic applicators who cover Dunk's Green? We’ve been sealing commercial buildings since 2005, CHAS accredited and a Constructionline member.

In and around smaller places like Dunk's Green, washroom work is often in halls, pubs, primary schools, care homes and holiday accommodation. Sealant that has gone black with mould usually can’t be cleaned, so it is cut out and replaced.

Our workmanship is guaranteed for 12 months, wherever the site is. If our installation lets you down in that time, we return and fix it.

Place
Dunk's Green (TN11)
Region
Kent
Guarantee
12 months on every job
Quotes
Quoted before any work starts
Telephone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

Quoting for work in Dunk's Green

Your fixed quote is built from the real scope. It takes account of:

  • How much there is to seal
  • Travel to remote or island sites
  • How accessible the joints are
  • Induction, permit and paperwork requirements

Quantities, awkward access and phased working all shape the price. So do site requirements such as inductions and permits.

Before you send an enquiry

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

  • The postcode of the building
  • Approximate linear metres or a joint schedule
  • The product your specification calls for
  • Asbestos survey details if the building is older

A handful of photographs and a postcode is the fastest way to a quote. Upload them with the quote form, or give us a call on 01277 525 020 or use the quote form if you’d rather talk the job through.

What the job involves on each surface

Changing rooms and gyms

Changing rooms in gyms and leisure centres stay wet and warm, so mould is a constant battle. Anti-mould sanitary silicone is the standard choice.

Wet-room floors and floor-to-wall joints

Wet floors are common in accessible showers and changing rooms so the edges are checked carefully.

When to call us in Dunk's Green

Panels and vanity units move slightly in use and trays shift slightly with each user. If the joint wasn’t laid to take that movement, it tears or peels away.

Site and facilities staff are often the first to spot these:

  • Open joints at the base of cubicle panels
  • Stained sealant around pans and urinals
  • A new bead over an old one coming away
  • Sealant lifting along a tray edge

Halls linked to places like Plaxtol Church host groups all week, which is hard on kitchen and toilet sealant.

What your quote should include

  • What the guarantee covers, and for how long
  • Who will actually carry out the work
  • How the existing material will be dealt with
  • The named product and why it was chosen

Questions to ask before you appoint anyone

What we can’t put right

We check first that sealant really is the fix. It isn’t the answer for:

  • Leaks through tanking or membranes below the finishes
  • Leaking pipes, traps, wastes or cisterns, which need a plumber
  • Fittings that move too much to hold a bead

If you are not sure, just call the office on 01277 525 020 or email the details over and we’ll give you a straight answer.

Joints and surfaces we work on

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

Your questions answered

Do you take on work at healthcare sites like Tonbridge Cottage Hospital?

Yes, provided the work is planned with the site’s estates team. Each area is agreed with the ward or department and the estates team in advance.

Is a smaller place like Dunk's Green outside your area?

No. Places such as Dunk's Green are covered as much as the big towns. We cover Greater London and the counties of the South East. Send photographs and a list of what needs doing, and we will plan the job to need as few trips as possible.

How many days will you need on site?

We plan the time on site around your programme and access. You will have an expected duration with the quote.

Is it possible to just clean mouldy silicone?

Not for long. The mould is inside the silicone so cleaning only lightens it for a while. Replacing the bead is the lasting answer.

Are you fully insured?

Yes. Mastic Doctor is fully insured, public liability included.

Do you use special sealant for toilets and showers?

It depends on the joint. Most washroom joints take sanitary silicone, and food areas take a hygienic, food-safe sealant where food contact is possible.

Does the weather affect the work?

For external joints, yes. Sealant needs a dry joint and a temperature within the product’s range, so damp, frosty or very cold days can stop external work. Internal work is rarely affected.

How a job runs

Where the site stays busy, we agree a sequence with your contact so the disruption stays in one area at once. Each section is protected, cleaned back and sealed before we move to the next. If others near Dunk's Green need work, visits can be combined. A fixed quote is given before anything starts.

  1. First, the phasing is agreed so facilities stay open.
  2. Anything behind the joints that needs another trade is flagged.
  3. Old sealant is stripped and the faces prepared.
  4. The right sanitary or food-safe sealant is applied.
  5. We confirm reopening times for each washroom.

Before we start on site

  • Let building users know which areas are affected
  • Flag any permit to work we will need
  • Agree which areas must stay open

Quotes

Specifications, drawings and tender packages are welcome with any enquiry, and we will price against exactly what is specified. Smaller jobs need nothing more than photographs and a few notes.

Get a quick quote

Advice

Washroom sealing in Dunk's Green: the local picture

Dunk's Green is about 24 miles from central London, within the office belt around the capital. Washrooms in commuter-belt offices take constant weekday traffic, and resealing in phases keeps facilities available.

Toilets at colleges like Hadlow College (to the south-east of Dunk's Green) take heavy use from students and staff alike. For a site such as Tonbridge Cottage Hospital, which lies south of Dunk's Green, sanitary joints in clinical areas need sound, cleanable sealant and a careful method.

Dunk's Green is about 4 miles north of Tonbridge, in Kent. Dunk's Green sits inside our coverage, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Dunk's Green is one of 931 places we cover in Kent. There’s a separate page for London, roughly 24 miles from Dunk's Green.

Business premises anywhere in TN11 are within our area for washrooms and wet areas. Just outside Dunk's Green, we also work in Plaxtol (1 mile north), Roughway (1 mile east), Claygate Cross (2 miles north), Crouch (2 miles north) and Pittswood (2 miles south). Bigger towns within reach include Maidstone (10 miles east), Dartford (14 miles north), Sevenoaks (6 miles west), Royal Tunbridge Wells (8 miles south), Gravesend (13 miles north) and Tonbridge (4 miles south).

Landmarks near Dunk's Green

Locally, jobs take us to sites close to Hadlow Rural Community School, The Kentish Rifleman Public House and Ivy Hatch Nature Reserve and the streets around them. Dunk's Green’s nearest station is Borough Green & Wrotham station, about 2.8 miles north. Well-known places in the area include Tonbridge Cottage Hospital (5.3 miles south) and Ightham Court (3.1 miles north). Not far away are Barden Lake.

Map of Dunk's Green © OpenStreetMap contributors
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