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

Commercial washroom and wet-area sealing in Middleton, Hampshire

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

  • Shower tray joints that have opened up
  • Failed joints along IPS and cubicle panels
  • Discoloured joints around urinals and WC pans
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
London, the South East & Scotland
CHAS accredited
Fully insured: £5m PL

Washroom sealing for Middleton sites

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

Washroom sealing for commercial buildings in Middleton

Facilities managers, contractors and building owners have used us for washroom sealing for over 20 years. 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. Most enquiries involve sealant stained black around basins and showers and a new bead over an old one coming away, on vanity units and basins, showers, trays and wet room floors and IPS panels and cubicles. Whether you call it commercial sealant work, mastic application or joint sealing, the work in Middleton is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.

Farm shops, cafés and venues in converted rural buildings around places like Middleton have busy toilets and kitchens. We plan the work around bookings and opening times.

What our 12-month guarantee covers is the way we did the job: the preparation, the sealing and the tooling. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.

Where
Middleton (SP11)
Wider area
Hampshire
Guarantee
12 months on our workmanship
Price
Quoted before any work starts
Phone
01277 525 020
Last updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

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.

Redoing a failed joint normally costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. That’s why many clients bring in a specialist from the beginning.

Questions about Middleton

Is a smaller place like Middleton outside your area?

No. Small places get the same service as large ones. London and every South East county are within our area. Send photographs and a list of what needs doing, and we will plan the job to need as few trips as possible.

Do we have to close all our washrooms in Middleton for resealing?

Normally only some of them, for a short time. We work in phases so other facilities stay open. Sanitary silicone needs time to cure before the area is used, and we will tell you how long for the product used.

Is colour matching possible?

It depends on the product specified. Some ranges offer many colours, others very few, so the available colours are confirmed with the quote.

Do you guarantee washroom sealing?

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

Do you need to remove the old sealant?

The failed bead is always removed. New silicone won’t stick to the old so a bead over the top fails quickly.

Can you handle several sites?

Yes. We take on portfolio and planned maintenance work, with each site phased to suit its occupants.

Will you quote for a small job?

We quote for single jobs as well as large packages and programmes. Send details for a fixed quote.

Busy facilities in and around Middleton

Middleton is about 60 miles from central London. Business park offices have washrooms in daily use by staff, so we work a block of facilities at a time.

Units at estates like Harewood Forest Industrial Estate, 1.2 miles south-west of Middleton, have welfare blocks whose showers and toilets see shift after shift. Where you’re responsible for a hall attached to a building such as Church of St Nicholas, its kitchen and toilets need sealant that stays cleanable.

Middleton is about 4 miles east of Andover, in Hampshire. Middleton sits inside our coverage, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Across Hampshire, 723 places are covered, including Middleton. Our Southampton page has more on work in that area, about 19 miles away.

We take on washrooms and wet areas across the SP11 postcode area. If your building is just outside Middleton, we cover Longparish (1 mile east), Barton Stacey (2 miles south-east), Egypt (3 miles south-east), Sutton Scotney (4 miles south-east) and Hunton (4 miles south-east). Further afield, our area takes in Basingstoke (13 miles east), Winchester (10 miles south), Andover (4 miles west), Chandler's Ford (14 miles south), Romsey (14 miles south) and Tadley (15 miles north-east).

Around Middleton

In Middleton, that means premises near The Plough Inn, among other places. For rail, the closest station is Whitchurch (Hampshire) station, roughly 3.7 miles north-east. A little further out are Andover War Memorial Hospital (4.8 miles west) and Finkley Down Farm Museum (3.4 miles north-west). The countryside around Middleton includes Anton Lakes and Mill Lake.

Map of Middleton © OpenStreetMap contributors

Aftercare for building managers

Cleaning and maintenance staff play a part too. Share these points with them:

  • Photograph and log failed joints across the estate
  • Squeegee showers and trays after busy periods
  • Don’t leave an open joint at a basin or tray
  • Tell us about infection-control or permit rules before we quote

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

Boards behind panels and vanity tops can swell when water gets past a failed joint. Once that happens, a reseal won’t fix them.

What happens if it’s left?

A tired-looking washroom doesn’t always need a refurbishment. If the finishes are in good order, replacing the sealant may do much of what’s needed while bigger works are planned. Around Middleton, it’s better to renew all the failing joints at once, rather than one at a time. Send photos of each area and we’ll quote for the lot.

Larger quantities, tricky access or phasing all shape the price. So do site requirements such as inductions and permits, along with the time of year for external work.

Why us?

  • Fully insured, including public liability cover
  • One number for every site we cover
  • Colours confirmed for the specified product
  • 12-month guarantee on workmanship

Read how commercial sealant jobs are priced and our accreditations.

From enquiry to sign-off

A typical day starts with protection: masking tape along the joint edges and sheeting over anything nearby. The work itself normally takes half a day to a day per washroom, depending on the number of fittings, and our waste is bagged and taken away as we go. For work around Middleton, we aim to finish in one visit, so photos and measurements up front really help. That way the right products come on the day.

  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. Each joint is cleaned and left dry.
  5. New anti-mould sealant goes in and is tooled neat.
  6. Each area is handed back when ready.

What we need from you

  • Tell us what induction or permit system the site runs
  • Arrange parking or a loading space
  • Tell staff and tenants when we’ll be in

Getting a fixed quote

Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to call the office on 01277 525 020 or email us with what you know.

Get a quick quote

Advice

When it isn’t the sealant

Before quoting, we check that sealant is the right answer. It isn’t the answer for:

  • Panel boards already damaged by water
  • Water from plumbing, not from a joint
  • Mould caused by poor ventilation, which will return until the extract is fixed

Not sure which it is? You can give us a call on 01277 525 020 or email drawings and photos and we will tell you honestly before you book.

Surfaces we seal

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

Signs you need washroom sealing in Middleton

Decorators’ caulk and general sealants sometimes end up where sanitary silicone belongs. They don’t stand up to constant water, and they stain, crack or wash out.

Things that normally lead to an enquiry:

  • Failed sealant behind washroom basins
  • Shower tray joints that have opened up
  • Black mould inside silicone joints that cleaning can’t shift
  • A new bead over an old one coming away

Healthcare washrooms on sites such as Andover War Memorial Hospital (to the west of Middleton) are resealed area by area, under the site’s own infection-control rules.

Before you book anyone

  • Health and safety accreditation such as CHAS
  • Will RAMS and insurance details be available?
  • How joint depth will be controlled
  • Who will actually carry out the work

How to choose a sealant contractor

Accreditations

Trusted. Accredited. Insured.