The Mastic Doctor team standing beside their branded vans outside an office building
Brighton and Hove · England

Washroom Sealing contractors in Portslade

Work needed on a washroom in Portslade? We look at it, seal it with the right product and hand it over with a 12-month guarantee.

  • Failed sealant behind washroom basins
  • Panel joints letting water behind
  • Mould spotting along silicone joints
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
London, the South East & Scotland
CHAS & Constructionline
£5m PL insurance

Washroom sealing across Portslade

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

From enquiry to sign-off

Occupied buildings need a little choreography. The work area is signed and kept contained, with routes through the building left open and move on in phases so staff and visitors can carry on around us. For a site in Portslade, we plan so the whole job is done in one go where possible. Photos with rough sizes let us arrive with everything needed.

  1. We inspect each washroom and record the joints to be resealed.
  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. Rooms reopen after the cure time.

Getting the site ready

  • Share the asbestos register for older buildings
  • Point out any areas we must not close
  • Tell us your opening times and when work is allowed

Request a quote

Specifications, drawings and tender packages are welcome with any enquiry, and we’ll price the work to it. For smaller jobs, photographs and a description will do.

Ask for a quote

Read more

How we handle washroom sealing in Portslade

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 we look at them closely. Most enquiries involve stained or open joints at kitchen sinks and worktops and shower tray joints that have opened up, on urinals and WCs, showers, trays and wet room floors and accessible toilets and changing rooms. A specialist sealant contractor works differently from a general builder: on jobs in Portslade, preparation and product choice get the time they need.

In and around places like Portslade, hospitality kitchens and toilets see heavy use in busy spells. Sealed joints at sinks, worktops and splashbacks help keep the kitchen cleanable.

Our 12-month guarantee is about workmanship, not wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we spell out the cover before we begin.

Where
Portslade (BN41, BN3, BN42)
Region
Brighton and Hove
Cover
A 12-month guarantee
Quote
A fixed quote before we start
Call
01277 525 020
Updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

Sanitary sealant for Portslade buildings

Portslade lies within about 1 mile of the sea, and coastal hotels, guest houses and holiday sites tend to fill up in the busy months. Bathrooms turned round daily in the busy months need sound, cleanable joints, so we plan the work for quieter weeks where possible. Portslade lies roughly 46 miles out from central London. Office toilets in the commuter belt are in use from first arrivals to last departures, and resealing in phases keeps facilities available.

Church halls and community buildings, such as those at St Nicolas Church, have kitchens and toilets used by many groups, and their sanitary sealant works hard. Toilets at places like Goldstone Retail Park, 1.9 miles to the east of Portslade, are cleaned constantly, so silicone needs to be sound and smooth. Student showers at universities like University of Brighton Moulesecoomb Campus (4.2 miles east of Portslade) see more use than most, and their silicone shows it.

Portslade is about 1 mile west of Brighton and Hove, in Brighton and Hove. If you’re looking for washroom sealing in Portslade, we can help. Across Brighton and Hove, 29 places are covered, Portslade among them.

We cover the BN41, BN3 and BN42 postcode districts for washrooms and wet areas. If your site is on Mill Lane, Crown Road and Drove Road or close by, send details and we will quote for washrooms and wet areas. With the A293 nearby, Portslade is straightforward for us to reach. Sites close to Portslade are covered too, including Hangleton (1 mile north-east), Southwick (1 mile south-west), Kingston by Sea (1 mile west), Shoreham-by-Sea (2 miles west) and Old Shoreham (3 miles west). Further afield, our area takes in Brighton (4 miles east), Carlton Hill (4 miles east), Hanover (4 miles east), West Hill (3 miles east), Brunswick (3 miles south-east) and Seven Dials (3 miles east).

Local landmarks in Portslade

Locally, jobs take us to sites close to The Mill House, King's School and Benfield Hill. For rail, the closest station is Fishersgate station, about 0.7 miles south of the centre. Nearby you will also find Churchill Square (3.4 miles south-east) and British Engineerium (1.8 miles east). Open spaces near Portslade include Thundersbarrow Hill and Shoreham Beach.

Map of Portslade © OpenStreetMap contributors

Why act early in Portslade

A tired-looking washroom doesn’t always need a refurbishment. Where tiles, panels and fittings are sound, new sealant may be enough to put it right while bigger works are planned. Sealant hardens, cracks and loses grip with age, UV and movement. Renewing it in good time keeps the building weathertight.

The specified product makes a difference, and so does the preparation. Access, phasing and site requirements come into it too.

What you get with us

  • Joints cleaned back to sound surfaces
  • Colour options checked against the specified product
  • Products installed to the manufacturer’s instructions
  • Colours chosen to suit frames, cladding or finishes where possible

Take a look at how commercial sealant jobs are priced or our accreditations and insurance.

What sets the cost

Your fixed quote is built from the real scope. It takes account of:

  • Travel to remote or island sites
  • The total length or number of joints
  • Joint width, depth and condition
  • Induction, permit and paperwork requirements

Access can matter as much as the joints themselves: joints within easy reach take less time than ones that need access equipment. Tell us how the joints are reached and call for a quote.

What to include in your enquiry

A good diagnosis starts with the right details. Let us know:

  • Access details, including height
  • Drawings or a marked-up plan, if available
  • Any dates the work must fit around
  • Whether the building will be occupied during the work

Pricing a project or setting a maintenance budget? Send the scope and any drawings, and we will return a fixed quote you can plan around. If you have questions first, phone 01277 525 020 or email us.

Questions we are asked in Portslade

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

Yes, hospitals are one of the sectors we cover. Each area is agreed with the ward or department and the estates team in advance.

Will you plan work around the academic year at somewhere like University of Brighton Moulesecoomb Campus?

Yes. Education sites normally want the work in vacations or in phases during term, and we plan to suit. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.

What site paperwork can you supply?

Let us know which documents the site needs, such as RAMS, an insurance certificate or CSCS details, and we will confirm them with the quote.

Do you cover Portslade?

Yes. We take on work across Portslade, with one number for every area we cover.

Are your applicators CSCS-carded?

Yes. Should the site need card details in advance, let us know and we’ll send them with the quote.

What happens if old sealant might contain asbestos?

Asbestos is possible in some older mastics, particularly in buildings from before 2000. We check the asbestos register before cutting out old sealant in an older building, and work stops until any suspect material has been tested. Removing asbestos is a job for asbestos specialists, not us.

How long before the toilets can reopen?

Each sealant has a cure time before it should get wet. We plan the phasing around that so facilities are never short.

Looking after the joints

For the best life from the joints:

  • Note failing joints building by building
  • Squeegee showers and trays after busy periods
  • Inspect washroom sealant regularly
  • Clean sealant with gentle products and a soft cloth

We hand each area back once the silicone has had the cure time the product needs. You will be told when showers and basins can be used again, and it helps if signs stay up until then.

Leaks through tray and wet-floor joints can go unseen until a ceiling marks below. By then, other trades may be needed as well so failed joints are worth acting on quickly.

For managing agents and facilities managers

Whether you are a managing agent, a property factor or an owner’s representative: send details, get a fixed quote, we seal, guaranteed. Keys, access and contacts can be agreed in advance.

We work for building owners and managing agents on everything from one building to a spread of sites. One quote can cover more than one site, which keeps the paperwork simple.

General trades versus a specialist

Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.

General builders and handymen seal joints, but it isn’t their main trade. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint, which is what makes a joint last.

Accreditations

Trusted. Accredited. Insured.