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

Washroom Sealing in The Platt

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

  • Split or peeling sealant at shower trays
  • Open joints along basins and vanity units
  • Panel joints letting water behind
1
Send details
Photos, drawings or a schedule, or we visit.
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
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
Constructionline member
£5m public liability

Washroom sealing across The Platt

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

Washroom sealing in The Platt

Accessible WCs, showers and changing areas have their own pinch points: shower trays, wet-room floor edges, basins and floor-to-wall junctions. An open joint there lets water track under flooring or behind wall panels so they get particular attention. If you’re dealing with failed joints along IPS and cubicle panels and black mould inside silicone joints that cleaning can’t shift, we can put it right, on showers, trays and wet room floors, vanity units and basins and kitchens and tea points alike. Whoever orders the work in The Platt, the brief is typically the same: a clear scope, tidy work and joints that don’t fail again.

In and around smaller places like The Platt, washroom work is often in halls, pubs, primary schools, care homes and holiday accommodation. Mould gets into sealant in any washroom that doesn’t dry out, and once it’s in, the sealant is replaced.

Guaranteed is the last step of every job. You get a 12-month guarantee on our workmanship, and we explain exactly what that covers when we quote.

Mastic Doctor team members lined up next to their branded vans outside an office building
Place
The Platt (TN3)
Region
East Sussex
Guarantee
A 12-month guarantee
Quotes
A fixed quote before we start
Telephone
01277 525 020
Last updated
3 November 2026

FAQs: The Platt

Would you work within a site like Tunbridge Wells Homeopathic Hospital?

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

Can work at a site such as Canterbury Christ Church University - Salomons fit around teaching?

Yes, holiday working periods are the norm on campus jobs. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.

Do you guarantee washroom sealing?

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

How do we ask for a quote?

It works in four steps: send details, receive a fixed quote, we carry out the work, and it’s guaranteed. The first step only needs photographs and a postcode.

Can you work to our specification?

Yes. We follow the specification, along with the manufacturer’s installation guidance.

Is old silicone taken out first?

The failed bead is always removed. New silicone won’t stick to the old, so sealing over it soon peels.

Can you send site paperwork?

Requirements differ from site to site, so list what you need, whether RAMS, insurance or CSCS details, and we’ll confirm with the quote.

How a job runs

In a busy building, the work is phased so only one area is out of use at a time. Each section is protected, cleaned back and sealed, then handed back before the next one starts. Rural sites near The Platt may need directions, gate codes or a contact on site. Send that with the details and we’ll confirm the plan with the quote.

  1. We start by inspecting the fittings and joints and flagging problems sealant can’t solve.
  2. The phasing is agreed so there are always facilities open.
  3. We strip out the old bead and clean off the residue left behind.
  4. Each joint is degreased and left dry, because silicone won’t bond to damp or soapy surfaces.
  5. New sanitary silicone with anti-mould additives goes in and is tooled neat.
  6. Each room is handed back once the sealant has had its cure time.

Getting the site ready

  • Send any specification or drawings in advance
  • Share your working hours and any access restrictions
  • For older buildings, check the asbestos register before work

Get a fixed quote

Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to ring 01277 525 020 or email a schedule or drawings with what you know.

Ask for a quote

Advice

Should maintenance staff do it?

A short, simple internal joint is often within reach of a maintenance team. The usual problems come from preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.

Certain joints really need a specialist: 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.

How the job changes by surface

Healthcare and care settings

Clinics, hospitals and care homes need joints that can be kept clean. We work to your estates and infection-control requirements as well as site permits.

Changing rooms and gyms

We phase work so not every changing area is closed at once. Tell us your site hours and access windows and we will plan around them.

Commercial clients in The Platt

Housing associations and managing agents often need work done across blocks and communal areas. Work can be phased so residents and staff keep access throughout, with each stage agreed with your site contact.

CHAS accredited and a Constructionline member, we make supplier vetting simple. Our insurance certificate can be sent along with the quote.

Why deal with it now?

Open or mouldy joints are hard to keep hygienic which matters most in healthcare, food and education settings. Sound, smooth joints are much easier to keep clean. For buildings around smaller places like The Platt, water damage can go unnoticed for longer, especially where a building isn’t used daily, which gives a failed joint time to do damage. Resealing early avoids that.

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

Why appoint us

  • Failed material removed, not covered up
  • Fixed quotes based on photographs, drawings or a visit
  • CHAS accredited
  • CSCS-carded applicators

See what affects the cost and our accreditations and insurance.

Cost factors for washrooms and wet areas

There’s no standard rate for sealant work, because every site is different. What we look at:

  • The total length or number of joints
  • The size and state of each joint
  • Whether the work must be split into stages
  • Distance, for remote addresses

Larger quantities, tricky access or phasing all shape the price. So do site requirements such as inductions and permits, along with the time of year for external work.

What to include in your enquiry

To price the job accurately, we need to understand the site. Useful things to include:

  • Access details, including height
  • Where the site is, with the postcode
  • Specification clauses that apply
  • Whether the building will be occupied during the work

A handful of photos and a postcode is the fastest way to a quote. Upload them with the quote form, or speak to us on 01277 525 020 or email drawings and photos if you’d rather talk the job through.

Keeping The Platt washrooms open while we work

At about 33 miles from central London, The Platt is within reach of the capital, within the office belt around the capital. Business park offices have washrooms in daily use by staff, so we phase work to keep some facilities open.

Welfare facilities in units on estates such as Durgates Industrial Estate (2.8 miles south-east of The Platt) have showers, toilets and kitchens with sealant that works hard. Where you are responsible for a hall attached to a building such as The Parish Church of St Alban, its kitchen and toilets need sealant that stays cleanable. At a university such as Canterbury Christ Church University - Salomons (4.9 miles north of The Platt), summer is the usual window for resealing residence bathrooms.

The Platt is about 4 miles south of Royal Tunbridge Wells, in East Sussex. Commercial clients in The Platt can call on us for washrooms and wet areas, as part of our coverage of East Sussex. We work across 308 places in East Sussex, from busy centres to rural villages. There’s a separate page for Brighton, roughly 25 miles from The Platt.

We cover the TN3 postcode districts. Just outside The Platt, we also work in Frant (1 mile north), Mark Cross (2 miles south), Eridge Green (2 miles north-west), Town Row (3 miles south-west) and Tidebrook (3 miles south). Bigger towns within reach include Hailsham (15 miles south), Crowborough (5 miles south-west), Uckfield (11 miles south-west), Heathfield (8 miles south), Upper Horsebridge (14 miles south) and Hellingly (14 miles south).

Local landmarks in The Platt

Recent enquiries here include premises near The George Public House and Eridge Park, among other places. For rail, the closest station is Frant station, about 1.7 miles north-east of the centre. Other landmarks nearby include The Corn Exchange (2.9 miles north) and The Amelia (3.4 miles north). Open spaces near The Platt include Broadwater Warren RSPB Reserve.

Map of The Platt © OpenStreetMap contributors
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