Commercial washroom and wet-area sealing in Gravesend, Kent
Commercial sealant work in Gravesend for contractors, FMs and building owners: sealing in commercial washrooms, showers, kitchens and wet areas, quoted at a fixed price.
- Users noticing mouldy joints
- Urinal joints that look unhygienic
- Stained or open joints at kitchen sinks and worktops
Need washroom sealing in Gravesend?
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Diagnose, treat, sign off
The first thing on site is a walk round with your contact, agreeing which joints are in scope, where to start and what must stay open. Then we strip out anything that has failed, prepare every joint and seal it. If you have more than one building in Gravesend, they can often be done on the same visit, with one quote covering them. Give us your access times and we will fit the work in.
- Every room is surveyed and the failed joints listed.
- The fixed quote sets out the rooms, the products and the phasing.
- Old sealant is removed completely and the faces cleaned.
- Joints are degreased and dried.
- New anti-mould sealant goes in and is tooled neat.
- Each area is handed back when ready.
Before we start on site
- Confirm the product named in the specification
- For older buildings, check the asbestos register before work
- Let building users know which areas are affected
Request 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’ll arrange a site visit.
Read more
About our washroom sealing in Gravesend
You can’t shut every toilet in an office, school or hotel at once. 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. The enquiries we see most involve panel joints letting water behind and stained sealant around pans and urinals, on accessible toilets and changing rooms, kitchens and tea points and urinals and WCs. Searching for sealant specialists in Gravesend? Mastic Doctor has worked for contractors, FMs and building owners since 2005.
Towns the size of Gravesend have washrooms and wet areas in schools, care homes, offices, gyms and restaurants. Mouldy sealant can’t typically be cleaned out, so it is stripped out and a new anti-mould bead goes in.
The 12-month guarantee is for workmanship rather than wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we spell out the cover before we begin.
- Location
- Gravesend (DA12, DA11)
- Wider area
- Kent
- Guarantee
- 12 months on our workmanship
- Quotes
- Quoted before any work starts
- Call
- 01277 525 020
- Updated
- 3 November 2026
How the job changes by surface
Showers and trays
A tray flexes every time it’s used and is constantly wet. Tray joints are where many washroom leaks start.
Healthcare and care settings
In healthcare, sealed joints are part of infection control. Your infection-control and estates rules are followed as well as site permits.
Owners, agents and contractors
Facilities managers want contractors who arrive with the paperwork sorted. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we’ll confirm them with the quote.
Hospitality, education, healthcare, office and retail clients come to us directly as well. The work is planned around how the building runs, so guests, pupils, patients or staff are disturbed as little as possible.
Sanitary sealant for Gravesend buildings
The sea is no more than about 2 miles from Gravesend, and coastal places often have hotels, guest houses and holiday accommodation with busy seasons. Showers and en suites in constant use are where silicone moulds and splits first, so resealing in the quieter months keeps rooms ready. A 2-mile radius around Gravesend takes in a number of hotels. Behind every hotel door there’s a bathroom whose sealant will need renewing sooner or later. Rooms are done in turn so most stay available.
Welfare facilities in units on estates such as Canal Industrial Park, 0.7 miles north of Gravesend, have showers, toilets and kitchens with sealant that works hard. At a university such as University of Greenwich, 4.9 miles to the west of Gravesend, summer is the usual window for resealing residence bathrooms.
Gravesend is about 9 miles north-west of Gillingham, in Kent. We cover Gravesend and the rest of Kent, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Across Kent, 931 places are covered, including Gravesend. There’s a separate page for London, about 21 miles away.
We take on washrooms and wet areas across the DA12 and DA11 postcode area, whatever the building. If your site is on Christ Church Road, Hillside Drive and Laurel Avenue or close by, send details and we will quote for washrooms and wet areas. You will find Gravesend on or near the A2 and A226. We also cover Windmill Hill (1 mile north-west), Milton-next-Gravesend (1 mile north-east), Denton (1 mile east), Singlewell or Ifield (1 mile south) and Northfleet (1 mile west) for washrooms and wet areas. A short drive away, we cover Maidstone (13 miles south-east), Dartford (7 miles west), Sevenoaks (13 miles south-west), Swanley (9 miles west), Kings Hill (11 miles south) and Foley Park (12 miles south-east).
Near you in Gravesend
Locally, jobs take us to sites close to Northfleet Urban Country Park, St John's Catholic Comprehensive and St John's Catholic Comprehensive and the streets around them. The closest station to Gravesend is Gravesend station, roughly 0.9 miles north-west. Nearby you will also find Gravesham Museum (0.9 miles north-west) and Stone Castle (4.5 miles west). Open spaces near Gravesend include Sawyers Lake and Gad's Hill.
Do you need washroom sealing in Gravesend?
Commercial cleaning is harder on sealant than everyday use. Strong chemicals, scourers and jet washing roughen, discolour or lift a bead, and dirt and mould then get a foothold.
Most enquiries start with something like this:
- Failed joints along IPS and cubicle panels
- Failed sealant behind washroom basins
- Urinal joints that look unhygienic
- Kitchen worktop joints that can’t be kept clean
Healthcare washrooms on sites such as Gravesham Community Hospital (to the north-west of Gravesend) are resealed area by area, under the site’s own infection-control rules.
What your quote should include
- The named product and why it was chosen
- How they’ll work around occupants
- What the guarantee covers, and for how long
- How the joint faces will be prepared and primed
What sealant work can’t fix
A proper diagnosis includes knowing what sealant can’t do. We’ll tell you if the real problem is one of these:
- A room that stays damp because ventilation isn’t working
- Hollow tiles or loose panels behind the joint
- Panel boards already damaged by water
If in doubt, phone 01277 525 020 or email the details over and we will say what we think.
What we seal
- IPS panels and cubicles
- Urinals and WCs
- Vanity units and basins
- Kitchens and tea points
- Accessible toilets and changing rooms
- Showers, trays and wet room floors
Nearby places to Gravesend
More services for Gravesend
Your questions answered
Could you schedule work at a campus like University of Greenwich for the vacation?
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.
Is a hospital such as Gravesham Community Hospital somewhere you can work?
Yes. Healthcare sites are among the places we work. We follow the site’s permits, sign-in and infection-control procedures in every area.
How long before the toilets can reopen?
The silicone needs time to cure before water reaches it. Phasing is planned with the cure time in mind so there are always rooms open.
Does weather matter for sealant work?
It can, for external work. Wet joints and cold, damp or frosty conditions stop the sealant bonding properly, so we watch the forecast and rearrange outside work if we have to. Internal work is far less affected.
Do you take on multi-site work?
Yes. We take on portfolio and planned maintenance work, planned site by site to suit how each building is used.
Do you have public liability insurance?
Yes. Mastic Doctor is fully insured, public liability included.
What’s the quickest route to a quote?
There are four steps: send details, receive a fixed quote, we carry out the work, and it’s guaranteed. Step one needs little more than photographs and a postcode.
Why deal with it now?
Sealing on top of old silicone saves nothing. It doesn’t bond, so it peels and traps dirt behind it. Cutting out completely and cleaning back takes a little longer and lasts. In a town such as Gravesend, a lot of buildings are older and have been altered over time, and joints where old meets new tend to fail first. Renewing them before water gets in protects the fabric.
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 you will have a fixed figure to work with.
Why choose Mastic Doctor in Gravesend
- Health and safety: CHAS accredited
- Over 20 years of commercial sealing
- Work carried out by CSCS-carded applicators
- Colour agreed before work starts