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

Washroom Sealing contractors in High Wycombe

We carry out sealing in commercial washrooms, showers, kitchens and wet areas in High Wycombe. Send photos or drawings for a fixed quote.

  • Open joints at the base of cubicle panels
  • A new bead over an old one coming away
  • Complaints from staff, guests or users about tired washrooms
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
London, the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Washroom sealing for High Wycombe sites

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

On site: what to expect

Site rules come first: signing in, inductions and any permit to work. Once we’re cleared to begin, we take the joints in the sequence agreed with you. For a town like High Wycombe, we try to group jobs for the same client into one visit, with one quote covering them. Give us your access times and we’ll fit the work in.

  1. We start by inspecting the fittings and joints and flagging problems sealant can’t solve.
  2. We agree which rooms close and when, so users always have somewhere to go.
  3. Failed silicone is removed completely and the surfaces cleaned of every trace.
  4. We clean and dry every surface so the new sealant can grip.
  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

  • Arrange parking or a loading space
  • Move anything stored against the joints
  • Let us know about inductions and permits

Quotes

We quote a fixed sum against the scope you give us, so the cost is agreed before work starts. To start the process, ring 01277 525 020 or email a schedule or drawings.

Ask for a quote

Read more

Washroom sealing in High Wycombe, done properly

Not every silicone belongs in a washroom. Sanitary silicone contains additives that resist mould, and neutral-cure types are used where acetoxy silicone could attack some metals, stone or mirror backings. Where food contact is possible, we use a hygienic, food-safe grade. If you’re dealing with washrooms that look worn because of the sealant and stained or open joints at kitchen sinks and worktops, we can help, on showers, trays and wet room floors, accessible toilets and changing rooms and urinals and WCs alike. Looking for mastic applicators who cover High Wycombe? We’ve been sealing commercial buildings since 2005.

In a town such as High Wycombe, commercial washrooms are in schools, care homes, surgeries, gyms, offices and pubs. Mouldy sealant can’t usually be cleaned out, so it is stripped out and a new anti-mould bead goes in.

Building owners and contractors get the same cover: twelve months on the work we carried out. It doesn’t extend to damage, faults in the building or work by others, and we’re upfront about that.

Where
High Wycombe (HP13, HP11, HP12, HP10)
Region
Buckinghamshire
Guarantee
12 months on our workmanship
Quotes
A fixed quote before we start
Telephone
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

When something else is needed

Not every problem is a sealant problem, and we’d rather tell you before you spend money. These need a different solution:

  • Fittings that move too much to hold a bead
  • Condensation from failed extract fans
  • Panel boards already damaged by water

Not sure which it is? You can speak to us on 01277 525 020 or email the details over and we’ll tell you honestly before you book.

What we seal

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

How the job changes by surface

Basins and vanity tops

A failed joint along a vanity unit lets water into the carcass. Resealing early protects the unit.

Healthcare and care settings

In healthcare, sealed joints are part of infection control. Your infection-control and estates rules are followed as well as site permits.

Doing it in-house

Using site staff can make sense for a small touch-up, but larger jobs are different: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.

For most general trades, sealant is a sideline. A specialist prepares properly, controls joint depth and picks a product with the right movement class, which is what makes a joint last.

Washroom sealing in High Wycombe: the local picture

Plenty of hotels sit less than 2 miles from High Wycombe. Hotel en suites take daily use, and tired silicone at trays and basins is one of the first things guests notice. The work can go floor by floor, agreed with housekeeping. At about 30 miles from central London, High Wycombe is within reach of the capital, within the office belt around the capital. Washrooms in commuter-belt offices take constant weekday traffic, so we work a block of facilities at a time.

Healthcare washrooms on sites such as Wycombe General Hospital, less than half a mile to the south-west of High Wycombe, are resealed area by area, under the site’s own infection-control rules. For centre management at a site such as Wycombe Retail Park (1.5 miles south-east of High Wycombe), washroom work is planned around footfall. Welfare facilities in units on estates such as Pilot Trading Estate (1 mile north-west of High Wycombe) have showers, toilets and kitchens with sealant that works hard.

High Wycombe is about 28 miles south of Milton Keynes, in Buckinghamshire. Commercial clients in High Wycombe can call on us for washrooms and wet areas, as part of our coverage of Buckinghamshire. High Wycombe is one of 308 places we cover in Buckinghamshire for washrooms and wet areas. Sites around Reading have their own page, roughly 16 miles from High Wycombe.

We cover the HP13, HP11, HP12 and HP10 postcode districts. Buildings on High Street, Church Square and Queens Square are within our area. You will find High Wycombe on or near the A40 and A404. Nearby places we also cover include Totteridge (1 mile east), Terriers (1 mile north-east), Wycombe Marsh (1 mile south-east), Micklefield (1 mile east) and Downley (2 miles north-west) for washrooms and wet areas. Nearby towns on our patch include Aylesbury (13 miles north), Chesham (8 miles north-east), Marlow (4 miles south), Amersham (7 miles north-east), Beaconsfield (5 miles east) and Chalfont St Peter (8 miles east). High Wycombe is one of the busier places in Buckinghamshire, and its commercial and public buildings are all within our area.

Landmarks near High Wycombe

We work on buildings around London Central Elementary High School, Three Tuns Public House and The Tower and the streets around them. There’s a railway station in High Wycombe itself: High Wycombe station. Other landmarks nearby include Eden (less than half a mile west) and High Wycombe Castle (less than half a mile north). The countryside around High Wycombe includes Gomm's Wood.

Map of High Wycombe © OpenStreetMap contributors

Commercial clients in High Wycombe

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.

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, and each stage is agreed with your contact.

Looking after the joints

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

  • Mention any site permits or estates rules at quote stage
  • Don’t leave an open joint at a basin or tray
  • Clear standing water from shower floors where possible
  • Keep washrooms out of use until we say the sealant has cured

If a joint we sealed fails within 12 months, tell us and we’ll look at it. Beyond that, regular checks keep small problems small.

Small numbers of failed joints are quick to phase in. Left, it tends to become a building-wide job and more closures to manage.

FAQs: High Wycombe

Is a hospital such as Wycombe General Hospital somewhere you can work?

Yes, healthcare and care buildings are part of our work. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.

Will you plan work around the academic year at somewhere like Buckinghamshire New University?

Yes. Tell us the term dates, vacation periods and access windows, and we will plan the work around them. Let us know which documents your site asks for, and we will confirm them alongside the quote.

How much does the work cost?

Every job gets its own fixed quote. To get one, speak to us on 01277 525 020 or send photos by email with a description of the work.

How do we ask for a quote?

The quote form is the simplest route, though you can also speak to us on 01277 525 020 or use the quote form. Photos, drawings or a joint schedule help us quote quickly.

Are your applicators CSCS-carded?

Yes. We use CSCS-carded applicators, as many construction sites ask for.

Can you clean the mould off instead of resealing?

Normally not. The mould is inside the silicone, so it comes back however often it’s cleaned. Replacing the bead is the lasting answer.

Does the weather affect the 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.

Accreditations

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