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

Commercial washroom and wet-area sealing in Preston, Brighton and Hove

Sealing in commercial washrooms, showers, kitchens and wet areas in Preston. CHAS accredited and fully insured, with a 12-month guarantee.

  • Panel joints letting water behind
  • Stained or open joints at kitchen sinks and worktops
  • Complaints from staff, guests or users about tired washrooms
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
12-month guarantee on our workmanship.
South East, London & Scotland
CHAS & Constructionline
£5m public liability

Washroom sealing for businesses in Preston

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

For managing agents and facilities managers

Hospitality, education, healthcare, office and retail clients come to us directly as well. The work is planned around how the building runs, so the building keeps working while we do.

As a CHAS accredited contractor and Constructionline member, we’re straightforward to vet for your supplier list. We’re fully insured, and our insurance certificate can go with the quote.

How we handle washroom sealing in Preston

Washroom joints need the right sealant, not whatever is to hand. Sanitary silicone contains additives that resist mould, and neutral-cure versions avoid the damage acetoxy types can do to some metals, stone and mirror backings. Where food contact is possible, we use a hygienic, food-safe grade. If you have gaps where vanity tops meet the wall and users noticing mouldy joints, we can help, whatever the surface. For commercial sealant work in Preston, you deal with one contact from quote to sign-off, for single jobs and planned programmes alike.

Pub and restaurant kitchens around smaller places like Preston work hard on their joints. Sealed joints at sinks, worktops and splashbacks help keep the kitchen cleanable.

Our workmanship is guaranteed for 12 months, wherever the site is. If a joint we sealed fails because of how it was installed, we come back and put it right.

Location
Preston (BN1, BN3, BN88)
Wider area
Brighton and Hove
Cover
A 12-month guarantee
Quote
A fixed quote before we start
Telephone
01277 525 020
Updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

Common questions from Preston clients

Is Preston off your patch?

No. Places such as Preston are covered as much as the big towns. We work across Greater London and the South East. Good photos up front let us bring everything on the first visit.

Could you schedule work at a campus like University of Brighton Moulesecoomb Campus for the vacation?

Yes, holiday working periods are the norm on campus jobs. We’re CHAS accredited and a Constructionline member, and paperwork such as RAMS is confirmed with the quote.

Are you fully insured?

Yes. We are fully insured, including public liability cover.

Do you use special sealant for toilets and showers?

Sanitary silicone with anti-mould additives for most washroom joints. Neutral-cure grades are used where acetoxy types could mark metals, stone or mirror backings.

What will the job cost?

There isn’t a price list, as every site differs. With photos or drawings, we can give you a fixed quote.

Do you guarantee washroom sealing?

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

Who decides which product is used?

A specification, where there is one, decides it. Without one, the joint decides: its movement, its surfaces and what it has to cope with.

Surface by surface

Wet-room floors and floor-to-wall joints

We seal the visible joints; we don’t install or repair waterproofing below and point it out if water appears to rise from below.

Kitchens and tea points

Kitchen joints need to be smooth and sealed so they can be cleaned properly. Food-safe sealants are used where food may touch the joint.

Looking after the joints

Every sealant joint needs some looking after, and their life depends on movement, exposure, cleaning and use. We suggest:

  • Squeegee showers and trays after busy periods
  • Keep washrooms out of use until we say the sealant has cured
  • Don’t leave an open joint at a basin or tray
  • Share your site rules when you send details

Where possible, have shower floors and trays squeegeed after busy periods. Joints that sit wet for hours fail sooner.

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.

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. Small buildings around Preston suffer from failed joints as much as large ones. Early resealing avoids the damage that follows a leak.

The work involved drives the cost: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a quote and we will explain how it’s made up.

Why clients in Preston choose us

  • Over 20 years of commercial sealing
  • Fixed quotes based on photos, drawings or a visit
  • Workmanship guaranteed for 12 months
  • Colour options checked against the specified product

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

Busy facilities in and around Preston

Preston is within about 2 miles of the coast, and places by the sea often rely on visitors, so their hotels and holiday lets see heavy seasonal use. Washrooms used guest after guest wear their sanitary silicone faster, so we plan the work for quieter weeks where possible. Preston lies roughly 45 miles out from central London. Business park offices have washrooms in daily use by staff, so we phase work to keep some facilities open.

On a healthcare site such as The Montefiore Hospital, which lies south of Preston, washroom work starts with the infection-control team’s sign-off. Toilets at colleges like Varndean College, 0.5 miles to the north-east of Preston, take heavy use from students and staff alike. At a hotel such as Preston Park Hotel, less than half a mile to the north-west of Preston, the quieter weeks are the time to reseal bathrooms.

Preston is about 1 mile north-west of Brighton, in Brighton and Hove. Commercial clients in Preston can call on us for washrooms and wet areas, as part of our coverage of Brighton and Hove. 29 places across Brighton and Hove fall within our area, including Preston.

We cover the BN1, BN3 and BN88 postcode districts for washrooms and wet areas. Streets here include Home Road, Bates Road and Loder Road, and sites on any of them can send details for a fixed quote. Being close to the A23, Preston is easy to get to with materials and equipment. If your building is just outside Preston, we cover Withdean (1 mile north), Prestonville (1 mile south), Hollingdean (1 mile east), Seven Dials (1 mile south) and West Hill (1 mile south). Nearby towns on our patch include Portslade (3 miles west), Saltdean (6 miles south-east), Roedean (3 miles south-east), Rottingdean (4 miles south-east) and Ovingdean (4 miles south-east).

Local landmarks in Preston

Locally, jobs take us to sites close to Preston Park, The Crown and Anchor Inn and Varndean College, among other places. There’s a railway station in Preston itself: Preston Park station. Well-known places in the area include Churchill Square (1.5 miles south) and Brighton Transport Museum (0.5 miles south). Open spaces near Preston include Newmarket Hill and Ladies Mile.

Map of Preston © OpenStreetMap contributors

On site: what to expect

In a busy building, the work is phased so only one area is out of use at a time. Each area is protected, prepared and sealed, then reopened once the sealant allows before the next one starts. Several jobs near Preston can be grouped on one trip. Tell us your site hours and we will plan around them.

  1. First, the phasing is agreed so facilities stay open.
  2. Leaks, loose panels or damp are pointed out first.
  3. Failed sealant and residue are stripped out.
  4. We reseal with the grade suited to each area.
  5. We give you a reopening time for every room.

Preparing the site

  • Move anything stored against the joints
  • Send asbestos survey details if the building is pre-2000
  • Share your working hours and any access restrictions

Quotes

The quickest route to a quote is a few photographs and the site postcode. Send them through the quote form, or call the office on 01277 525 020 or email drawings and photos if you’d rather talk the job through.

Ask for a quote

Advice

Doing it in-house

Putting right a botched joint often costs more than sealing it well at the start, because the whole bead must be removed and the faces cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.

The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are easy to get wrong without experience.

Accreditations

Trusted. Accredited. Insured.