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

Washroom Sealing contractors in Canterbury

Commercial sealant work in Canterbury for contractors, FMs and building owners: sealing in commercial washrooms, showers, kitchens and wet areas, quoted at a fixed price.

  • A new bead over an old one coming away
  • Kitchen worktop joints that can’t be kept clean
  • Failed joints along IPS and cubicle panels
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
CHAS & Constructionline
£5m public liability

Washroom sealing across Canterbury

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

What affects the price in Canterbury

These are the things that shape the price:

  • How accessible the joints are
  • Travel to remote or island sites
  • Backing rod, priming and other preparation
  • The total length or number of joints

There’s no price list, since every building and every scope is different. Call for a quote and we’ll price your job on its own details.

What to include in your enquiry

Good information means a firmer quote. Helpful details to send:

  • Specification clauses that apply
  • The site address and postcode
  • Drawings or a marked-up plan, if available
  • Whether an asbestos survey exists

We quote a fixed sum against the scope you give us, so the cost is agreed before work starts. To start the process, ring 01277 525 020 or email the details over.

Washroom sealing in Canterbury, done properly

When mould has spotted a silicone joint, more cleaning won’t remove it. The growth is inside the sealant so it returns whatever the cleaning regime. Only replacement gets rid of it for good. If you have stained sealant around pans and urinals and shower tray joints that have opened up, we can help. Whether you call it commercial sealant work, mastic application or joint sealing, the work in Canterbury is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.

Retail parks, shopping centres and business parks around large towns like Canterbury have customer and staff toilets that rarely close. Phased work keeps enough facilities open while the sealant is replaced.

The 12-month guarantee covers our workmanship: preparation, application and finish. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.

Place
Canterbury (CT1, CT2, CT4, CT3)
Wider area
Kent
Guarantee
A 12-month guarantee
Quotes
Quoted before any work starts
Call
01277 525 020
Page updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

After the work

Keep the joints in good shape with a few simple steps:

  • Clean sealant with gentle products and a soft cloth
  • Add sealant joints to planned maintenance checks
  • Don’t leave an open joint at a basin or tray
  • Leave signs up until the cure time is over

Ask your cleaning team to use gentle products and soft cloths on sealant. Strong acids, solvents and scourers wear the surface and give mould a start.

In food areas, cleanability is something environmental health officers look at. Failed sealant around sinks and worktops is easy to put right in good time.

Common problems we fix in Canterbury

Cubicle panels, IPS panels and vanity units flex when people lean on them or doors are slammed and trays shift slightly with each user. If the joint wasn’t laid to take that movement, it tears or peels away.

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

  • Discoloured joints around urinals and WC pans
  • Shower tray joints that have opened up
  • Failed sealant in a tea point or staff kitchen
  • Resealing that didn’t last because the old bead stayed

Welfare facilities in units on estates such as Wincheap Industrial Estate (0.7 miles south-west of Canterbury) have showers, toilets and kitchens with sealant that works hard.

What to look for in a quote

  • The terms of the workmanship guarantee
  • How they’ll work around occupants
  • How joint depth will be controlled
  • How they handle RAMS and site documents

How to choose a sealant contractor

Busy facilities in and around Canterbury

The area within 2 miles of Canterbury holds a good number of hotels. Hotel en suites take daily use, and tired silicone at trays and basins is one of the first things guests notice. We work a handful of rooms at a time, so the hotel keeps letting the rest. Four care or nursing homes sit less than 2 miles from Canterbury. Assisted bathrooms and wet rooms in care settings need sanitary sealant that stays cleanable. Rooms are done a few at a time at times agreed with the home.

At a college such as Canterbury College, less than half a mile south-east of Canterbury, washroom and kitchen sealant is best renewed in the holidays or in phases during term. At a hospital like Kent and Canterbury Hospital (0.9 miles south of Canterbury), patient and staff washrooms are best done in short phases agreed with the ward.

Canterbury is in Kent. If you’re looking for washroom sealing in Canterbury, we can help. Canterbury is one of 931 places in Kent on our list for washrooms and wet areas. Sites around London have their own page, about 53 miles away.

Work on washrooms and wet areas is covered throughout CT1, CT2, CT4 and CT3, for business premises of every kind. We cover commercial and managed buildings on Long Market, High Street and High Street St Gregorys and the roads nearby. With the A2 and A28 nearby, Canterbury is straightforward for us to reach. We also cover Wincheap (1 mile south-west), Harbledown (1 mile west), Hales Place (1 mile north), Thanington (1 mile south-west) and Stuppington (1 mile south) for washrooms and wet areas. A short drive away, we cover Ashford (13 miles south-west), Margate (15 miles north-east), Dover (14 miles south-east), Folkestone (14 miles south), Ramsgate (15 miles east) and Whitstable (6 miles north-west). Canterbury is one of the busier places in Kent, and its commercial and public buildings are all within our area.

Around Canterbury

Recent enquiries here include premises near Canterbury School of Architecture, Bus Company Island and St Thomas of Canterbury Church, among other places. You’ll also find The Old Buttermarket pub (under half a mile south-west) and Barton Court Grammar School (0.5 miles east). There’s a railway station in Canterbury itself: Canterbury East station. Other landmarks nearby include Whitefriars Shopping Centre (under half a mile south-west) and Canterbury Roman Museum (under half a mile south). Green spaces nearby include Blean Woods RSPB Reserve.

Map of Canterbury © OpenStreetMap contributors

Canterbury: questions and answers

Will you plan work around the academic year at somewhere like University of the Creative Arts?

Yes, holiday working periods are the norm on campus jobs. Let us know which documents your site asks for, and we’ll confirm them alongside the quote.

Can you take on a job at a hospital such as Kent and Canterbury Hospital?

Yes, healthcare and care buildings are part of our work. Each area is agreed with the ward or department and the estates team in advance.

How do you choose the sealant?

The specification comes first, if there is one. If there isn’t one, it comes down to the joint: its movement, its surfaces and what it has to cope with.

Is Canterbury in your area?

Yes. We cover Canterbury. To discuss a job, speak to us on 01277 525 020 or send photos by email.

Can you clean the mould off instead of resealing?

Cleaning may lighten it, but the mould returns. New anti-mould sanitary silicone is the treatment and point out if ventilation is part of the problem.

When can showers be used after new sealant?

That varies with the sealant and the room temperature. Each room gets its own reopening time from us before we leave it.

Can you follow the specification on our project?

Yes. Send it with your enquiry, and the quote will be based on it.

Diagnose, treat, sign off

We schedule the visit to fit the site hours and access windows you give us. On the day, the work area is kept contained and tidy, and we check in with your contact before moving on to each new area. Jobs in a large place like Canterbury are often on business parks, retail sites or campuses with their own sign-in and permit rules. Send the site rules with your enquiry and we will plan to them.

  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.

Before we start on site

  • Tell staff and tenants when we will be in
  • Move anything stored against the joints
  • Point out any areas we must not close

Getting a fixed quote

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 speak to us on 01277 525 020 or send photos by email.

Ask for a quote

Related advice

When something else is needed

Part of a good diagnosis is knowing where sealant stops. We’ll tell you if the real problem is any of the following:

  • Leaks through tanking or membranes below the finishes
  • Panel boards already damaged by water
  • Mould caused by poor ventilation, which will return until the extract is fixed

If in doubt, ring 01277 525 020 or email drawings and photos and we’ll say what we think before you book.

Joints and surfaces we work on

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

What the job involves on each surface

Basins and vanity tops

Stone and some composite tops need a neutral-cure sealant, so the product is chosen to suit.

Changing rooms and gyms

We phase work so not every changing area is closed at once. Phasing follows your site hours and access windows.

Accreditations

Trusted. Accredited. Insured.