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

Langstone washroom sealing

Washroom sealing in Langstone, backed by over 20 years in commercial sealing. Fully insured, with a 12-month guarantee.

  • Stained sealant around pans and urinals
  • Panel joints letting water behind
  • Washrooms that look worn because of the sealant
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
South East, London & Scotland
CHAS accredited
£5m PL insurance

Washroom sealing in Langstone

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

Washroom sealing in Langstone

Since 2005 we have resealed commercial washrooms for facilities teams, contractors and building owners. Our applicators are CSCS-carded, and we are CHAS accredited and a Constructionline member. We are fully insured. Our workmanship is guaranteed for 12 months. If you are dealing with sealant laid over old silicone and now peeling and split or peeling sealant at shower trays, we can help, whatever the surface. Whoever orders the work in Langstone, the brief is usually the same: a clear scope, tidy work and joints that don’t fail again.

Rural businesses near smaller places such as Langstone, from cafés to event venues, rely on washrooms and kitchens that stay clean. We plan the work around bookings and opening times.

Whoever the client is, the cover is the same: a 12-month guarantee on our workmanship. Faults in the structure, damage and other trades’ work fall outside it, and we say so plainly.

The Mastic Doctor team beside their liveried vans in front of an office building
Where
Langstone (PO9, PO11)
Region
Hampshire
Cover
12 months on our workmanship
Quotes
A fixed quote before we start
Phone
01277 525 020
Page updated
3 November 2026

On site: what to expect

We begin with a short walk round with whoever looks after the building, to confirm the scope, the order of work and any areas we must keep clear. Then we strip out anything that has failed, prepare every joint and seal it. For work around Langstone, we aim to finish in one visit, so we ask for photos and rough sizes first. That way the right products come on the day.

  1. We agree which washrooms close and when.
  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.

Getting the site ready

  • Let us know about inductions and permits
  • Send your site hours and access windows
  • Point out parking and an unloading spot

Quotes

Need a figure for a tender or a budget? Send the scope and any drawings, and we’ll return a fixed quote that you can work with. For a chat about it beforehand, call 01277 525 020 or email drawings and photos.

Get a quick quote

Advice

Leave it or put it right?

Gaps and mould in joints give dirt and bacteria somewhere to sit, and in kitchens, clinics and schools that is a real concern. A smooth, sealed joint can be cleaned properly. One visit to deal with every failing joint makes more sense than several trips to a place like Langstone, rather than one at a time. Photos of every joint help us quote for the whole job.

What a job costs comes down to the quantity of joints, how much old material needs removing and the access. Call for a fixed quote when you’re ready.

Why choose Mastic Doctor in Langstone

  • CHAS accredited contractor
  • Our applicators hold CSCS cards
  • Colours chosen to suit frames, cladding or finishes where possible
  • Coloured sealants to suit the setting, where available

Read how commercial sealant jobs are priced and our accreditations.

Keeping the joints sound

After handover, these steps help:

  • Squeegee showers and trays after busy periods
  • Act on the first split you see at a shower tray
  • Clean sealant with gentle products and a soft cloth
  • Include joints in routine washroom inspections

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

In food areas, cleanability is something environmental health officers look at. Resealing sinks, worktops and splashbacks before an inspection is a simple step.

Langstone: questions and answers

Will you plan work around the academic year at somewhere like University of Portsmouth - Langstone Campus?

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.

Will our hotel in Langstone need to close for the work?

In most cases no closure is needed: we work room by room or floor by floor. Tell us your quiet periods and access windows and we will plan around them.

What do you charge?

That depends on the job: quantities, access, the product and any phasing. Call for a quote.

How do I request 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 photos and a postcode.

Who decides which product is used?

Where there’s a specification, we use the product it names. Otherwise, we recommend a product to suit the joint’s movement, the substrate and the conditions, following the manufacturer’s guidance.

Can you quote from photographs?

Many jobs can be quoted from photos, drawings or a joint schedule. If the job needs a look first, we will arrange a visit.

Will cleaning remove black mould from sealant?

Surface cleaning won’t reach mould that has rooted into the bead. We replace the sealant with an anti-mould sanitary grade and check the ventilation isn’t the cause.

Toilets, showers and kitchens around Langstone

Langstone sits close to the coast, within about 1 mile, and coastal hotels, guest houses and holiday sites tend to fill up in the busy months. Washrooms used guest after guest wear their sanitary silicone faster, so resealing in the quieter months keeps rooms ready. There are several hotels within about 2 miles of Langstone. Each has en suites, back-of-house toilets and kitchens with sealant that moulds and splits. Rooms are done in turn so most stay available.

Toilets at places like Solent Retail Park, 0.8 miles north of Langstone, are cleaned constantly, which is hard on silicone. Halls of residence and teaching buildings at universities such as University of Portsmouth - Langstone Campus (to the south-west of Langstone) are easiest to reseal during vacations. At a hospital like Elmleigh Hospital (1.4 miles north of Langstone), patient and staff washrooms are best done in short phases agreed with the ward.

Langstone is about 2 miles south of Havant, in Hampshire. Our applicators travel to Langstone for work on washrooms and wet areas, handled exactly as we handle every other area. 723 places across Hampshire fall within our area, including Langstone.

Postcode districts covered here: PO9 and PO11 for washrooms and wet areas. We cover commercial and managed buildings on Mill Lane, Langstone Road and Langstone High Street and the roads nearby. With the A3023 nearby, Langstone is easy to get to with materials and equipment. Nearby places we also cover include Warblington (1 mile east), Northney (1 mile south-east), Denvilles (1 mile north-east), Stoke (1 mile south) and North Hayling (1 mile south-east). Further afield, our area takes in Gosport (8 miles west), Fareham (9 miles west), Horndean (5 miles north), Hedge End (15 miles west), Waterlooville (4 miles north-west) and Petersfield (12 miles north).

Around Langstone

We work on buildings around The Royal Oak pub and Warblington School, among other places. The nearest railway station is Havant station, about 1.1 miles north. A little further out are Warblington Castle (0.8 miles north-east) and Havant Museum (0.8 miles north). Not far away are Southmoor Nature Reserve.

Map of Langstone © OpenStreetMap contributors

What we can’t put right

A few problems need another trade or a different fix, and we point that out rather than sealing over them:

  • Mould caused by poor ventilation, which will return until the extract is fixed
  • A dripping waste or valve behind a panel
  • Vanity carcasses that have swollen

Not sure which it is? You can speak to us on 01277 525 020 or send details through our quote form and we’ll tell you honestly.

Joints and surfaces we work on

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

When to bring in a specialist

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.

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. That’s why many clients bring in a specialist from the beginning.

Different surfaces, different methods

Basins and vanity tops

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

Wet-room floors and floor-to-wall joints

Sealant at a wet-room floor edge is not a substitute for the waterproofing underneath and point it out if water appears to rise from below.

Accreditations

Trusted. Accredited. Insured.