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

Commercial washroom and wet-area sealing in Gillingham, Medway

Washroom sealing in Gillingham, backed by over 20 years in commercial sealing. Fully insured and CHAS accredited.

  • Users noticing mouldy joints
  • Open joints at the base of cubicle panels
  • Sealant stained black around basins and showers
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
London, the South East & Scotland
CHAS accredited
£5m public liability

Need washroom sealing in Gillingham?

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

Washroom sealing in Gillingham

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. We work on urinals and WCs, accessible toilets and changing rooms and IPS panels and cubicles, and what we’re called in for most is open joints at the base of cubicle panels and complaints from staff, guests or users about tired washrooms. A specialist sealant contractor works differently from a general builder: in Gillingham, that means joint design, primers and backing rod as standard.

Places the size of Gillingham usually have a wide mix of buildings with commercial washrooms: offices, hotels, leisure centres, schools and healthcare. Each has joints at vanity tops, cubicles, showers and floors that mould and split in time.

The 12-month guarantee is for workmanship rather than wear and tear. How long a sealant joint lasts depends on movement, exposure, cleaning and use, so we are clear about what is covered before work starts.

The Mastic Doctor team standing beside their branded vans outside an office building
Location
Gillingham (ME8, ME7, ME4, ME5)
Region
Medway
Guarantee
12 months on our workmanship
Quotes
Quoted before any work starts
Call
01277 525 020
Updated
3 November 2026

Your questions answered

Will you plan work around the academic year at somewhere like University of Greenwich - Medway?

Yes. We plan campus work around teaching, exams and residence turnarounds. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.

Do you work in occupied care homes around Gillingham?

Yes. We agree rooms and times with the manager and work a few areas at a time. Any site rules, from signing in to infection control, are agreed before we start.

Which sealant will you use?

A specification, where there is one, decides it. Without one, the joint decides: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.

Is there a guarantee on the work?

There is a 12-month guarantee on our workmanship backed by public liability insurance.

Is Gillingham in your area?

Yes. Gillingham falls within our area, and you can call 01277 525 020 or send photos by email to get started.

When can the area be used after sealing?

The product and site conditions decide that. Some take light use quickly, others need longer to cure, so we will confirm the curing time on the day.

Can the sealant be colour-matched?

It depends on the product specified. Some ranges are wide, others limited, so we will confirm the colours available for the specified product with the quote.

What the job involves on each surface

Changing rooms and gyms

Showers, floor edges and vanity units in changing rooms all need sound sealant, and we survey them together.

Urinals and WC pans

The joint between a pan and the floor is easy to overlook. We include them in the survey.

Owners, agents and contractors

We take on planned maintenance as well as one-off repairs: resealing failed joints building by building, on a schedule that suits your budget. Sites in Gillingham can sit alongside others in a wider programme across Medway.

Whether you’re a managing agent, a property factor or an owner’s representative: send details, get a fixed quote, we seal, guaranteed. We can agree access arrangements and keyholder contacts beforehand.

Honest limits

A few problems need another trade or a different fix, and we point that out rather than sealing over them:

  • Loose panels, vanity units or tiles, which need fixing first
  • A dripping waste or valve behind a panel
  • A room that stays damp because ventilation isn’t working

Not sure which it is? You can call 01277 525 020 or email the details over and we’ll tell you honestly before you book.

Joints and surfaces we work on

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

Doing it in-house

Paperwork matters too. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we’ll confirm the paperwork you need with the quote.

For most general trades, sealant is a sideline. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint, which is what makes a joint last.

Our process

At the end of each section, we remove the tape, clean down and inspect every joint. If an area should be left alone while the sealant cures, we say how long and put signs out. For premises in central Gillingham, deliveries and parking need a bit of planning, whereas edge-of-town units normally have yard space. Let us know what’s there when you send details.

  1. We survey each room, count the joints and note anything behind them that needs another trade.
  2. We agree which rooms close and when, so users always have somewhere to go.
  3. We strip out the old bead and clean off the residue left behind.
  4. We clean and dry every surface so the new sealant can grip.
  5. A bead of anti-mould sanitary silicone goes in and is tooled to a smooth, cleanable profile.
  6. Rooms reopen after the product’s cure time, and we move to the next.

Getting the site ready

  • Send your site hours and access windows
  • Tell staff and tenants when we will be in
  • Tell us what induction or permit system the site runs

Ask for a quote

Pricing a project or setting a maintenance budget? Send the scope and any drawings, and we will return a fixed quote you can plan around. If you have questions first, phone 01277 525 020 or send details through our quote form.

Get a quick quote

Related advice

Leave it or put it right?

A tired washroom says a lot about how a building is run. Guests, clients, pupils and patients notice stained joints before they notice much else. Fresh sanitary silicone lifts a room with very little disruption. A leaking joint in a commercial building in Gillingham can damage stock, ceilings and finishes. It pays to act early.

Every site prices differently: joint size, product, access and site hours all play a part. A fixed quote follows once we understand the job.

What you get with us

  • Health and safety: CHAS accredited
  • Clear, fixed quotes
  • One contact handling all your sites
  • Over 20 years of commercial sealing

Read our cost guide or our accreditations.

Sanitary sealant for Gillingham buildings

The sea is no more than about 2 miles from Gillingham, and coastal places often have hotels, guest houses and holiday accommodation with busy seasons. Washrooms used guest after guest wear their sanitary silicone faster, so resealing in the quieter months keeps rooms ready. Central London is about 30 miles from Gillingham. Washrooms in commuter-belt offices take constant weekday traffic, so we phase work to keep some facilities open.

For a college such as MidKent College Gillingham Campus (2.1 miles north-west of Gillingham), half-term and summer give the windows for washroom work. Office washrooms on sites such as Gillingham Business Park, 0.5 miles south of Gillingham, are in use all working day, so resealing is phased to keep some open. For a site such as Medway Maritime Hospital, which lies west of Gillingham, sanitary joints in clinical areas need sound, cleanable sealant and a careful method.

Gillingham is about 30 miles east of London, in Medway. We send applicators to Gillingham for washrooms and wet areas. Gillingham is one of 54 places we cover in Medway. There’s a separate page for London, about 30 miles away.

Work on washrooms and wet areas is covered throughout ME8, ME7, ME4 and ME5, for business premises of every kind. Buildings on Leeds Square, London Road and Dorset Square are within our area for washrooms and wet areas. Main routes into Gillingham include the A2 and A231, which helps when planning parking and deliveries for the job. We also cover Twydall (1 mile east), Lower Twydall (1 mile north-east), Grange (1 mile north), Darland (1 mile south-west) and Hale (1 mile south-west) for washrooms and wet areas. Bigger towns within reach include Rochester (4 miles west), Strood (4 miles west), Lordswood (3 miles south-west), Hoo St Werburgh (4 miles north), Rochester Riverside (3 miles north-west) and Frindsbury (4 miles north-west). As one of the bigger centres in Medway, Gillingham has a broad mix of commercial, public and industrial buildings.

Around Gillingham

Around Gillingham, our work takes us to commercial buildings near The Robert Napier School, The Robert Napier School and The Star pub and the streets around them. Gillingham’s nearest station is Gillingham (Kent) station, roughly 1.5 miles north-west. Other landmarks nearby include Medway Maritime Hospital (1.6 miles west) and Six Poor Travellers House (3.3 miles west). Not far away are Blue Bell Hill and Bishop Saltings.

Map of Gillingham © OpenStreetMap contributors
Accreditations

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