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

Washroom Sealing in Sharpthorne

Planning work on a washroom in Sharpthorne? We assess it, carry out the work and guarantee our workmanship for 12 months.

  • Urinal joints that look unhygienic
  • Resealing that didn’t last because the old bead stayed
  • Stained or open joints at kitchen sinks and worktops
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
Covering the South East & Scotland
CHAS & Constructionline
£5m PL insurance

Washroom sealing across Sharpthorne

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

How we handle washroom sealing in Sharpthorne

Whether it’s a single toilet block in Sharpthorne or a programme across several buildings, we work the same way: send details, get a fixed quote, we seal, guaranteed. A few photos and a count of fittings are enough for a quick quote, or we can arrange a visit. The enquiries we see most involve failed sealant behind washroom basins and split or peeling sealant at shower trays, across vanity units and basins, kitchens and tea points and urinals and WCs. Looking for mastic applicators who cover Sharpthorne? We’ve been sealing commercial buildings since 2005, with CSCS-carded applicators.

Smaller places such as Sharpthorne 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.

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 are clear about what is covered before work starts.

Location
Sharpthorne (RH19)
Wider area
West Sussex
Cover
12 months on every job
Price
Fixed quote, scope in writing
Telephone
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Quoting for work in Sharpthorne

Each job is priced on its own details. The main factors are:

  • How accessible the joints are
  • Joint width, depth and condition
  • Site requirements such as inductions and permits
  • Location, for remote and island sites

What a job costs comes down to how many linear metres there are, how much old material needs removing and how the joints are reached. Call for a quote once you have the details.

Sending details for a quote

A few photos plus some basic facts will normally do. It helps to include:

  • The postcode of the building
  • Anything awkward about access or site hours
  • The type of building and who uses it
  • Any specification or named product

Let us know the site, the scope and your timescale, and a fixed quote will follow. The easiest way is to speak to us on 01277 525 020 or send details through our quote form.

Your questions answered

Will the toilets in our Sharpthorne building be out of use?

Rarely all at once: work is phased so some facilities are always available. Sanitary silicone needs time to cure before the area is used, and we’ll tell you how long for the product used.

Would you work within a site like Queen Victoria Hospital?

Yes, hospitals are one of the sectors we cover. Work is phased so departments keep running, under the site’s own rules.

How long will the new sealant last?

It depends on movement, UV and weather, cleaning, traffic and the product. Treat them as maintenance items and inspect them regularly.

Is there a guarantee on the work?

There is a 12-month guarantee on our workmanship, and we carry public liability insurance.

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 external work may be moved if conditions aren’t right. Indoors, the weather is rarely a problem.

Do you offer coloured sealant?

In many cases, yes. Many products come in a range of standard colours, and matching to RAL references or surrounding finishes is often possible. We’ll confirm the colours available for the specified product.

Are you CHAS accredited and on Constructionline?

Yes. CHAS accredited, Constructionline member, and our applicators hold CSCS cards.

When to call us in Sharpthorne

Commercial cleaning is harder on sealant than everyday use. Strong chemicals, scourers and jet washing roughen, discolour or lift a bead so grime sticks to the damaged surface.

Things that typically lead to an enquiry:

  • Black mould inside silicone joints that cleaning can’t shift
  • Failed sealant behind washroom basins
  • Stained or open joints at kitchen sinks and worktops
  • Sealant lifting along a tray edge

Office washrooms on sites such as Hangdown Mead Business Park, under half a mile to the south-east of Sharpthorne, are in use all working day, so resealing is phased to keep some open.

What your quote should include

  • Will RAMS and insurance details be available?
  • Can the work be phased to keep areas open?
  • Do they follow the manufacturer’s priming guidance?
  • Health and safety accreditation such as CHAS

How to choose a sealant contractor

What we can’t put right

Being straight saves everyone time. Fresh joints won’t solve:

  • Leaking pipes, traps, wastes or cisterns, which need a plumber
  • Leaks through tanking or membranes below the finishes
  • Panel boards already damaged by water

If you are not sure, just call 01277 525 020 or email drawings and photos and we will give you a straight answer.

Where we work in Sharpthorne

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

Owners, agents and contractors

If you look after buildings for someone else, you need clear quotes and clear reporting. You get a fixed quote, an agreed scope and a walk round at the end.

FMs need a contractor who is easy to get on site. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we’ll confirm them with the quote.

On site: what to expect

A typical day starts with protection: masking tape along the joint edges and sheeting over anything nearby. The work itself usually takes half a day to a day per washroom, depending on the number of fittings, and we clear our waste as we work. Jobs in and around smaller places like Sharpthorne are typically planned as a single visit, so photos and measurements up front really help. Then the right materials arrive with us.

  1. Every room is surveyed and the failed joints listed.
  2. You get a fixed quote with the phasing plan.
  3. The whole of the old bead is removed.
  4. Joints are degreased and dried.
  5. New anti-mould sealant goes in and is tooled neat.
  6. Each area is handed back when ready.

Getting the site ready

  • Point out parking and an unloading spot
  • Share your working hours and any access restrictions
  • Move anything stored against the joints

Request a quote

Every quote starts with the facts: the joints involved, quantities, access and the product called for. Send what you have, and we’ll arrange a site visit if anything is unclear.

Get a price

Related advice

Busy facilities in and around Sharpthorne

Sharpthorne is about 29 miles from central London, 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.

For a hall at a building such as St Margaret's Church, resealing the kitchen and toilets can be fitted between bookings. Staff changing rooms and patient toilets at places like Queen Victoria Hospital, 4.5 miles to the north-east of Sharpthorne, need cleanable, sound silicone.

Sharpthorne is about 4 miles south of East Grinstead, in West Sussex. We cover commercial sites throughout Sharpthorne, for single jobs and planned programmes alike. We work across 373 places in West Sussex. Sites around Brighton have their own page, roughly 17 miles from Sharpthorne.

We cover the RH19 postcode districts. Streets here include Station Road, Marlpit Road and Bayhams Field. Nearby places we also cover include West Hoathly (1 mile west), Highbrook (2 miles south), Selsfield Common (2 miles north-west), Little London (2 miles south-west) and Birchgrove (3 miles south-east) for washrooms and wet areas. A short drive away, we cover Crawley (7 miles west), Horsham (12 miles west), Haywards Heath (6 miles south-west), Burgess Hill (9 miles south-west), East Grinstead (4 miles north) and Broadfield (7 miles west).

Near you in Sharpthorne

We work on buildings around The Fox pub, among other places. For rail, the closest station is East Grinstead station, about 3.6 miles north of the centre. Other landmarks nearby include Waterbury Castle (2.6 miles south) and East Grinstead Museum (3.7 miles north-east). Open spaces near Sharpthorne include Hedgecourt Lake.

Map of Sharpthorne © OpenStreetMap contributors

Looking after the joints

Every sealant joint needs some looking after, and how long they last depends on how they’re treated. Our advice:

  • Make sure washroom ventilation is running
  • Share your site rules when you send details
  • Leave signs up until the cure time is over
  • Clear standing water from shower floors where possible

Ventilation is half the battle. Constant damp lets mould take hold even on anti-mould grades, so get faulty extract looked at.

A split joint at a shower tray can leak for a long time before anyone sees it. At that stage, boards or ceilings may need repair, so reseal when you first spot a split.

Accreditations

Trusted. Accredited. Insured.