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

Commercial washroom and wet-area sealing in Cranbrook, Kent

Sealing in commercial washrooms, showers, kitchens and wet areas across Cranbrook, by CSCS-carded applicators. Fully insured and CHAS accredited.

  • Gaps where vanity tops meet the wall
  • Washrooms that look worn because of the sealant
  • Sealant lifting along a tray edge
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
London, the South East & Scotland
Constructionline member
£5m PL insurance

Washroom sealing for businesses in Cranbrook

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

Owners, agents and contractors

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.

If you look after buildings for someone else, you need clear quotes and clear reporting. You get a fixed quote, an agreed scope and a walk round at the end, plus a 12-month guarantee.

Washroom sealing for commercial buildings in Cranbrook

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 there are always facilities in use. Give us your site hours and access windows and the phasing is planned around them. We work on showers, trays and wet room floors, accessible toilets and changing rooms and urinals and WCs, and the usual reasons a site gets in touch are black mould inside silicone joints that cleaning can’t shift and panel joints letting water behind. Whether you call it commercial sealant work, mastic application or joint sealing, in Cranbrook it comes down to the same thing: the right product in a properly prepared joint.

Around Cranbrook, washroom work normally comes one building at a time. Photos of each area help us plan the visit and bring the right sealant.

What our 12-month guarantee covers is the way we did the job: the preparation, the sealing and the tooling. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.

Place
Cranbrook (TN17, TN18)
Region
Kent
Cover
12 months on our workmanship
Quote
Fixed quote, scope in writing
Call
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

FAQs: Cranbrook

Can you work on a hospital site such as Benenden Hospital?

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.

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

Rarely. Rooms or floors are done in turn, so the rest of the hotel keeps trading. Housekeeping and our team agree each day’s rooms.

Will cleaning remove black mould from sealant?

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

Do you work in Cranbrook?

Yes. Sites across Cranbrook are covered, and the same phone number covers every area.

How do we ask for a quote?

There are four steps: send details, get a quote, we seal, guaranteed. Step one needs little more than photographs and a postcode.

Do you work in hospitals, clinics and care homes?

We work in clinics, hospitals and care homes. Tell us what records you need and we’ll confirm with the quote before we start.

How long before the toilets can reopen?

That varies with the sealant and the room temperature. Each room gets its own reopening time from us, and signs stay up until then.

What we are called out for in Cranbrook

Cubicle panels, IPS panels and vanity units flex when people lean on them or doors are slammed and trays shift slightly with each user. A bead that can’t cope with the movement splits along one edge.

It’s worth sending us details if you spot any of the following:

  • Sealant laid over old silicone and now peeling
  • Failed sealant in a tea point or staff kitchen
  • Open joints along basins and vanity units
  • Urinal joints that look unhygienic

Schools such as Cranbrook School have toilets, changing rooms and kitchens that are best resealed in the holidays.

Questions to ask before you book

  • Do they follow the manufacturer’s priming guidance?
  • Their public liability cover
  • Are they CHAS accredited or on Constructionline?
  • Will CSCS-carded applicators be on site?

Questions to ask before you appoint anyone

On site: what to expect

Diagnose, treat, sign off: every visit follows that pattern. We inspect the joints and confirm what’s in scope, then the work is carried out to the specified product and detail, and we finish with a walk round so the work can be signed off. Several jobs near Cranbrook can be grouped on one trip. Mention the building’s opening times and we will work within them.

  1. Every washroom is checked joint by joint, with loose panels, leaks or damp noted for the right trade.
  2. A phasing plan keeps part of the building’s facilities in use at all times.
  3. The failed silicone is stripped and every face scraped clean of residue.
  4. Joints are cleaned, degreased and dried before sealing.
  5. A bead of anti-mould sanitary silicone goes in and is tooled to a smooth, cleanable profile.
  6. Each room is handed back once the sealant has had its cure time.

What we need from you

  • Send your site hours and access windows
  • Warn occupants and staff about the work
  • Explain the parking and delivery arrangements

Getting a fixed quote

Send details, get a quote, we seal, guaranteed: that’s how every job runs. The first step is to ring 01277 525 020 or use the quote form with what you know.

Get a price

Read more

Toilets, showers and kitchens around Cranbrook

Central London is about 39 miles from Cranbrook. Office washrooms on business parks see heavy weekday use, which is why the work is phased. A 2-mile radius around Cranbrook takes in several hotels. Hotel en suites take daily use, and tired silicone at trays and basins is one of the first things guests notice. Rooms are done in turn so most stay available.

At a hotel such as The George Hotel, under half a mile north of Cranbrook, the quieter weeks are the time to reseal bathrooms. For a hall at a building such as Congregational Church, resealing the kitchen and toilets can be fitted between bookings.

Cranbrook is about 12 miles south of Maidstone, in Kent. Our applicators travel to Cranbrook for work on washrooms and wet areas. Our Kent coverage takes in 931 places. Our Brighton page has more on work in that area, about 34 miles away.

Anyone looking for washroom sealing in TN17 and TN18 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. Among the streets we cover are High Street, Crane Lane and White Lion Yard. If your building is just outside Cranbrook, we cover Baker's Cross (1 mile east), Coursehorn (1 mile east), Swattenden (1 mile south), Hartley (1 mile south-west) and Gill's Green (3 miles south-west). Further afield, our area takes in Maidstone (12 miles north), Ashford (15 miles east), Royal Tunbridge Wells (12 miles west), Tonbridge (13 miles north-west), Kings Hill (13 miles north-west) and Foley Park (13 miles north).

Local landmarks in Cranbrook

We work on buildings around The Crown Public House, Crane Valley and Cranbrook Church of England Primary School, among other places. Well-known places in the area include Sissinghurst Castle (2.5 miles north-east) and Benenden Hospital (3.6 miles east).

Map of Cranbrook © OpenStreetMap contributors

Looking after the joints

Problems stay small when the joints are checked regularly. In particular:

  • Avoid scourers and harsh descalers on silicone
  • Add sealant joints to planned maintenance checks
  • Don’t leave trays and floors sitting wet
  • Keep a record of which washrooms need attention

Ventilation is half the battle. Constant damp lets mould take hold even on anti-mould grades so report fans that aren’t working to your building services team.

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

How the quote is worked out

Quotes vary with the job. It mainly depends on:

  • How accessible the joints are
  • Whether old sealant has to be cut out first
  • The product specified
  • The total length or number of joints

The specified product makes a difference, and so does the preparation. Access, phasing and site rules also count.

What we need to price the job

We can often quote from photographs and a few details. Please tell us:

  • The type of building and who uses it
  • Photos of the joints, close up and from further back
  • Any dates the work must fit around
  • Drawings or a marked-up plan, if available

Specifications, drawings and tender packages are welcome with any enquiry, and we will price the work to it. Smaller jobs need nothing more than photos and a few notes.

When it isn’t the sealant

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

  • Condensation from failed extract fans
  • Failed tanking beneath a wet-room floor or behind tiles
  • Fittings that move too much to hold a bead

If you are not sure, just give us a call on 01277 525 020 or use the quote form and we’ll give you a straight answer before you book.

Surfaces we seal

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

Trusted. Accredited. Insured.