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

Washroom Sealing in Chainhurst

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

  • Discoloured joints around urinals and WC pans
  • Split or peeling sealant at shower trays
  • Kitchen worktop joints that can’t be kept clean
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.
South East, London & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Washroom sealing near Chainhurst

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

Washroom sealing in Chainhurst

When mould has spotted a silicone joint, more cleaning won’t remove it. The mould has rooted into the silicone itself so it returns whatever the cleaning regime. Only replacement gets rid of it for good. We work on urinals and WCs, accessible toilets and changing rooms and kitchens and tea points, and the usual reasons a site gets in touch are urinal joints that look unhygienic and failed joints along IPS and cubicle panels. A single leaking joint is often how a building in Chainhurst first comes to us: we check the joints around it and give you an honest view of what needs doing now and what can wait.

Halls and community buildings near places like Chainhurst are used by different groups through the week, and their toilets and kitchens show it. Resealing sinks, worktops and WCs with anti-mould silicone keeps them clean and watertight.

What our 12-month guarantee covers is the way we did the job: the preparation, the sealing and the tooling. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.

Location
Chainhurst (TN12)
Wider area
Kent
Guarantee
12 months on our workmanship
Quote
Quoted before any work starts
Phone
01277 525 020
Last updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Washroom sealing in Chainhurst: the local picture

Chainhurst lies roughly 32 miles out from central London, in a commuter belt where offices and business parks are common. Washrooms in commuter-belt offices take constant weekday traffic, which is why the work is phased.

For a campus such as University for the Creative Arts - Maidstone, which lies north of Chainhurst, showers in residences and washrooms in teaching blocks can be programmed around term dates. Staff changing rooms and patient toilets at places like Oakwood Hospital, 4.6 miles to the north of Chainhurst, need cleanable, sound silicone.

Chainhurst is about 5 miles south-west of Maidstone, in Kent. Chainhurst sits inside our coverage, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Our Kent coverage takes in 931 places, large and small. Sites around London have their own page, roughly 32 miles from Chainhurst.

Postcode districts covered here: TN12 for washrooms and wet areas. Among the streets we cover are Raynham Villas and Hunton Road, and sites on any of them can send details for a fixed quote. Just outside Chainhurst, we also work in Hunton (1 mile north-west), Benover (2 miles north-west), Congelow (2 miles north-west), Coxheath (2 miles north) and Yalding (2 miles north-west). A short drive away, we cover Maidstone (5 miles north-east), Sittingbourne (15 miles north-east), Sevenoaks (14 miles north-west), Royal Tunbridge Wells (10 miles south-west), Tonbridge (9 miles west) and Kings Hill (6 miles north-west).

Landmarks near Chainhurst

For rail, the closest station is Marden station, about 2 miles south of the centre. Nearby you’ll also find South East Romany Museum (2.6 miles south-east) and Oakwood Hospital (4.6 miles north).

Map of Chainhurst © OpenStreetMap contributors

Diagnose, treat, sign off

Where the site stays busy, we agree a sequence with your contact so the disruption stays in one area at once. Each area is protected, prepared and sealed, then handed back before the next one starts. Smaller jobs around Chainhurst can be grouped with others nearby. You’ll have a fixed quote before work starts.

  1. We inspect each washroom and record the joints to be resealed.
  2. The fixed quote sets out the rooms, the products and the phasing.
  3. Old sealant is removed completely and the faces cleaned.
  4. Each joint is cleaned and left dry.
  5. A sanitary silicone bead is laid and given a smooth tooled finish.
  6. Each area is handed back when ready.

What we need from you

  • Explain the parking and delivery arrangements
  • Clear stock, furniture or equipment away from the joints
  • Confirm the product named in the specification

Getting a fixed quote

Quotes are fixed against the scope you send, so you know the figure before anyone is on site. To start the process, call 01277 525 020 or use the quote form.

Get a quick quote

Advice

After the work

For the best life from the joints:

  • Mention any site permits or estates rules at quote stage
  • Photograph and log failed joints across the estate
  • Keep washrooms out of use until we say the sealant has cured
  • Don’t leave trays and floors sitting wet

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.

Small numbers of failed joints are quick to phase in. Left, it tends to become a building-wide job with more phasing to plan.

Leave it or put it right?

A failed joint behind a basin or along a shower tray lets water run where it shouldn’t. That can lead to swollen boards, marked ceilings below and lingering smells, and fixing that takes far more work than resealing. One visit to deal with every failing joint makes more sense than several trips to a place like Chainhurst, rather than one at a time. Send photos of each area and we’ll quote for the lot.

What a job costs comes down to the quantity of joints, how much old material needs removing and the access. Call for a fixed quote once you have the details.

What you get with us

  • RAL and finish matching where the product range allows
  • Fully insured, including public liability cover
  • Old sealant cut out, never sealed over
  • A range of standard colours, depending on the product

Read what affects the cost and our accreditations and insurance.

FAQs: Chainhurst

Will you plan work around the academic year at somewhere like University for the Creative Arts - Maidstone?

Yes. Tell us the term dates, vacation periods and access windows, and we will plan the work around them. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.

Is a hospital such as Oakwood Hospital somewhere you can work?

Yes, hospitals are one of the sectors we cover. The estates team’s permit system and infection-control rules come first, and the work is planned around them.

Will you quote for a small job?

We quote for single jobs as well as large packages and programmes. Photos and a description are enough to start.

How soon can a washroom be used after resealing?

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.

Is old silicone taken out first?

We always remove it. Fresh silicone can’t key to an old bead so a bead over the top fails quickly.

How long does a job like this take?

It depends on the scope, though a typical visit usually takes a few hours for one toilet block, with bigger buildings phased across a number of visits. For bigger or phased jobs, we will set out a timescale with the quote.

Is it possible to just clean mouldy silicone?

Surface cleaning won’t reach mould that has rooted into the bead. We replace the sealant with an anti-mould sanitary grade and check the ventilation isn’t the cause.

What we can’t put right

Sealant solves a lot, but not everything, and we’d rather tell you before you spend money. It won’t fix:

  • Swollen or delaminated boards behind panels or vanity tops
  • Hollow tiles or loose panels behind the joint
  • A dripping waste or valve behind a panel

If in doubt, speak to us on 01277 525 020 or use the quote form and we will say what we think before you book.

What we seal

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

When to call us in Chainhurst

Warmth, moisture and soap residue are exactly what mould needs, and sealant joints trap all three. Even anti-mould grades can be colonised over time where extraction is poor.

Site and facilities staff are often the first to spot these:

  • Panel joints letting water behind
  • Complaints from staff, guests or users about tired washrooms
  • Shower tray joints that have opened up
  • A new bead over an old one coming away

Units at estates like Woodfalls Industrial Estate (to the west of Chainhurst) have welfare blocks whose showers and toilets see shift after shift.

What your quote should include

  • Whether old or failed sealant will be cut out, not overlaid
  • Proof of insurance
  • How they handle RAMS and site documents
  • The terms of the workmanship guarantee

Choosing a commercial sealant contractor

Cost factors for washrooms and wet areas

A fixed quote reflects the actual work. It takes account of:

  • How much existing material needs removing
  • The total length or number of joints
  • Any access equipment needed
  • Backing rod, priming and other preparation

Pricing washrooms and wet areas depends on how many there are, their condition and the access, and any specification that applies. Call for a quote.

Details that help us quote

Diagnosis starts before we arrive. Tell us:

  • When you need the work done
  • Anything awkward about access or site hours
  • The site address and postcode
  • Drawings or a marked-up plan, if available

Pricing a project or setting a maintenance budget? We will quote against your scope and drawings you can plan around. If you have questions first, call 01277 525 020 or email drawings and photos.

Accreditations

Trusted. Accredited. Insured.