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

Commercial washroom and wet-area sealing in Queen Street, Kent

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

  • Shower tray joints that have opened up
  • Sealant stained black around basins and showers
  • Gaps where vanity tops meet the wall
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
CHAS accredited
£5m public liability

Need washroom sealing in Queen Street?

Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.

Site staff or a sealant specialist?

For most general trades, sealant is a sideline. A specialist prepares properly, controls joint depth and picks a product with the right movement class, which is what makes a joint last.

Some joints are best left to specialists: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. A poor seal in places like these tends to cost more to put right later.

About our washroom sealing in Queen Street

Since 2005 we have resealed commercial washrooms for facilities teams, contractors and building owners. Our applicators are CSCS-carded, and we are CHAS accredited and a Constructionline member. We are fully insured. Every resealed washroom carries our 12-month guarantee. Site teams most often ask us about split or peeling sealant at shower trays and sealant stained black around basins and showers, across vanity units and basins, urinals and WCs and kitchens and tea points. Looking for mastic applicators who cover Queen Street? We have been sealing commercial buildings since 2005.

Smaller places such as Queen Street still have commercial washrooms and kitchens: in halls, pubs, schools, care homes and farm-based businesses. Mould gets into sealant in any washroom that doesn’t dry out, and once it’s in, the sealant is replaced.

Every job is signed off with a 12-month guarantee. It’s a plain promise: if the work we did fails within twelve months, we return to fix it.

The Mastic Doctor team standing beside their branded vans outside an office building
Where
Queen Street (TN12)
Wider area
Kent
Cover
12 months on every job
Quotes
Quoted before any work starts
Call
01277 525 020
Page updated
3 November 2026

Surface by surface

Basins and vanity tops

A failed joint along a vanity unit lets water into the carcass. Resealing early protects the unit.

Urinals and WC pans

Pan and urinal joints face constant cleaning and splashing. Stained or split joints here trap smells and look unhygienic.

Your questions answered

Is Queen Street too small for you to travel to?

No. Small places get the same service as large ones. We work across Greater London and the South East. Good photographs up front let us bring everything on the first visit.

Can you work on a hospital site such as Tunbridge Wells Hospital?

Yes. Healthcare sites are among the places we work. Work is phased so departments keep running, under the site’s own rules.

Is it OK to put new silicone on top of the old?

We always remove it. New silicone won’t stick to the old so a bead over the top fails quickly.

Do you use special sealant for toilets and showers?

It depends on the joint. Most washroom joints take sanitary silicone while kitchens may need a food-safe grade.

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.

How much does the work cost?

That depends on the job: the volume of work, the access, the specified product and how it’s phased. Call for a quote and we will price it properly.

Is it possible to just clean mouldy silicone?

Normally not. The mould is inside the silicone, so it comes back however often it’s cleaned. Replacement is the lasting fix.

Keeping Queen Street washrooms open while we work

At about 31 miles from central London, Queen Street is within reach of the capital. Office toilets in the commuter belt are in use from first arrivals to last departures, so we work a block of facilities at a time.

Office toilets at parks like Forstal Business Park (to the north-west of Queen Street) take steady weekday use, and mouldy silicone soon shows. Clinical washrooms at sites like Tunbridge Wells Hospital (to the south-west of Queen Street) are scheduled with the ward so the room is out of use for as little time as possible.

Queen Street is about 6 miles east of Tonbridge, in Kent. We cover commercial sites throughout Queen Street, for single jobs and planned programmes alike. Across Kent, 931 places are covered, Queen Street among them. Sites around London have their own page, roughly 31 miles from Queen Street.

We take on washrooms and wet areas across the TN12 postcode area, for business premises of every kind. Close to Queen Street, our area also takes in Mile Oak (1 mile south), Pearson's Green (2 miles south), Claygate (2 miles south-east), Castle Hill (2 miles south) and Palmer's Green (2 miles south). A short drive away, we cover Maidstone (8 miles north-east), Sevenoaks (12 miles north-west), Royal Tunbridge Wells (7 miles south-west), Tonbridge (6 miles west), Kings Hill (6 miles north) and Foley Park (9 miles north-east).

Near you in Queen Street

We work on buildings around John Brunt V.C. Pub, Mascalls School and Foal Hurst Wood. Queen Street’s nearest station is Paddock Wood station, about 1 mile west of the centre. Nearby you’ll also find Tunbridge Wells Hospital (5.1 miles south-west) and The Hop Farm Museum (1.1 miles north-west). Green spaces nearby include Tudeley Woods RSPB reserve.

Map of Queen Street © OpenStreetMap contributors

Our process

When we get to site, we sign in, go through any site induction and check how permits are handled. Everything around the joints gets protected before any cutting starts, with the work itself normally taking a morning or so for a small washroom, longer where showers and changing rooms are included. For a building around Queen Street, tell us how to find it and who will meet us. Add it to your enquiry and we will build it into the plan.

  1. We start by inspecting the fittings and joints and flagging problems sealant can’t solve.
  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. 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

  • Point out parking and an unloading spot
  • Point out any areas we must not close
  • Tell us your opening times and when work is allowed

Ask for a quote

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

Get a quick quote

Advice

Why it’s worth doing now in Queen Street

Leaving the job until a shutdown often means living with it for months. Phasing lets it happen now, with facilities kept in use. For buildings around smaller places like Queen Street, water damage can go unnoticed for longer, especially where a building isn’t used daily, so a failed joint can leak for a while before anyone sees it. Resealing early avoids that.

A quote for washrooms and wet areas depends on how many there are, their condition and the access. Ask us for a fixed quote.

Why us?

  • 12-month guarantee on workmanship
  • Failed material removed, not covered up
  • Products installed to the manufacturer’s instructions
  • CHAS accredited

Take a look at how commercial sealant jobs are priced or how we’re accredited.

What sealant work can’t fix

Sealant solves a lot, but not everything, and we’d rather tell you before you spend money. These need a different solution:

  • A dripping waste or valve behind a panel
  • Hollow tiles or loose panels behind the joint
  • Leaks through tanking or membranes below the finishes

If in doubt, call the office on 01277 525 020 or email a schedule or drawings and we’ll say what we think.

Joints and surfaces we work on

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

When to call us in Queen Street

Warmth, moisture and soap residue are exactly what mould needs, and sealant joints trap all three. Anti-mould additives help, but in a poorly ventilated room mould can still take hold eventually.

If one of these sounds familiar, it’s time for a closer look:

  • Mould spotting along silicone joints
  • Failed sealant behind washroom basins
  • Kitchen worktop joints that can’t be kept clean
  • Urinal joints that look unhygienic

For a school such as Paddock Wood Primary School, washroom and kitchen sealant can be renewed around term dates.

Before you book anyone

  • Is depth set with backing rod, or bond-breaker tape in shallow joints?
  • Whether primer will be used where the manufacturer specifies it
  • Will failed sealant be removed rather than covered?
  • Their plan for phasing and protecting the area

Our contractor checklist

Accreditations

Trusted. Accredited. Insured.