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

Washroom Sealing contractors in Otterbourne

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

  • Shower tray joints that have opened up
  • Gaps where vanity tops meet the wall
  • Discoloured joints around urinals and WC pans
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Signed off, with 12 months’ guarantee.
Covering the South East & Scotland
Constructionline member
£5m public liability

Washroom sealing for Otterbourne sites

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

Commercial washrooms in Otterbourne

Otterbourne lies roughly 64 miles out from central London, within the office belt around the capital. Washrooms in commuter-belt offices take constant weekday traffic, so we phase work to keep some facilities open.

For a hall at a building such as Church of St Matthew, resealing the kitchen and toilets can be fitted between bookings. At a university such as University of Winchester, 3.6 miles to the north of Otterbourne, summer is the usual window for resealing residence bathrooms. If you manage an office at a site such as Wessex Business Park, which lies south-east of Otterbourne, the washrooms and tea points can be done a floor at a time.

Otterbourne is about 3 miles north-east of Chandler's Ford, in Hampshire. Our applicators travel to Otterbourne for work on washrooms and wet areas. Otterbourne is one of 723 places in Hampshire on our list for washrooms and wet areas. There’s a separate page for Southampton, about 7 miles away.

Business premises anywhere in SO21 are within our area for washrooms and wet areas. Buildings on Oakwood Avenue, Meadowcroft Close and Brooklyn Close are within our area for washrooms and wet areas. We also cover South Down (1 mile north-east), Compton (1 mile north), Shawford (1 mile north-east), Twyford (1 mile north-east) and Ladwell (2 miles west) for washrooms and wet areas. Further afield, our area takes in Winchester (4 miles north), Eastleigh (3 miles south), Fareham (13 miles south-east), Andover (15 miles north-west), Totton (9 miles south-west) and Chandler's Ford (3 miles south-west).

What’s near Otterbourne

In Otterbourne, that means premises near Thornden School, The White Horse Public House and Thornden School, among other places. The closest station to Otterbourne is Shawford station, roughly 1.1 miles north-east of the centre. Well-known places in the area include Eastleigh Museum (2.9 miles south) and Wolvesey Castle (3.8 miles north). Open spaces near Otterbourne include Twyford Down and Shawford Down.

Map of Otterbourne © OpenStreetMap contributors

Washroom sealing in Otterbourne

In a busy washroom, the sealant typically gives up long before the tiles or fittings. Basin tops, urinal backs, panel joints and shower trays put it under water, chemicals and daily cleaning, and once mould grows into it, it can’t be scrubbed out. We strip it out and lay new anti-mould sanitary silicone. We work on IPS panels and cubicles, accessible toilets and changing rooms and kitchens and tea points, and what we’re called in for most is panel joints letting water behind and kitchen worktop joints that can’t be kept clean. Looking for mastic applicators who cover Otterbourne? We’ve been sealing commercial buildings since 2005, with CSCS-carded applicators.

In and around smaller places like Otterbourne, washroom work is often in halls, pubs, primary schools, care homes and holiday accommodation. Mould gets into sealant in any washroom that doesn’t dry out, and once it’s in, the sealant is replaced.

Every job we finish is backed by a 12-month workmanship guarantee, in Otterbourne as everywhere else we work. If our installation lets you down in that time, we return and fix it.

Place
Otterbourne (SO21)
Wider area
Hampshire
Guarantee
12 months on every job
Quote
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

Owners, agents and contractors

Building owners and managing agents use us on everything from one building to a spread of sites around Otterbourne. Several sites can go on one quote, so there’s one set of paperwork to deal with.

We take on planned maintenance as well as one-off repairs: resealing failed joints building by building, on a schedule that suits your budget. Otterbourne can form part of a wider programme across Hampshire.

When it isn’t the sealant

Sealant solves a lot, but not everything, and we’d rather tell you before you spend money. It won’t fix:

  • A dripping waste or valve behind a panel
  • Leaks through tanking or membranes below the finishes
  • Loose panels, vanity units or tiles, which need fixing first

If you are not sure, just speak to us on 01277 525 020 or email a schedule or drawings and we will give you a straight answer.

Joints and surfaces we work on

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

Otterbourne: questions and answers

Do you take on work at healthcare sites like Wessex Hospital?

Yes. Healthcare sites are among the places we 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 University of Winchester?

Yes. Education sites typically want the work in vacations or in phases during term, and we plan to suit. Let us know which documents your site asks for, and we will confirm them alongside the quote.

Are you CHAS accredited and on Constructionline?

Yes. We’re CHAS accredited and a Constructionline member.

Is any job too small?

Small jobs are welcome alongside larger packages. Photos and a description are enough to start.

What if there’s asbestos in the old mastic?

Some older mastics, especially in pre-2000 buildings, can contain asbestos. We check the asbestos register before cutting out old sealant in an older building, and work stops until any suspect material has been tested. We don’t remove asbestos-containing materials.

What’s the quickest route to a quote?

You can use the quote form on this site; alternatively, give us a call on 01277 525 020 or email us. Photos, drawings or a joint schedule help us quote quickly.

Are you fully insured?

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

On site: what to expect

Occupied buildings need a little choreography. The work area is signed and kept contained, with routes through the building left open and work section by section so the rest of the building stays in use. Smaller jobs around Otterbourne can be grouped with others nearby, which keeps travel down. A fixed quote is given before anything starts.

  1. We agree which washrooms close and when.
  2. Anything behind the joints that needs another trade is flagged.
  3. Failed sealant and residue are stripped out.
  4. We reseal with the grade suited to each area.
  5. We confirm reopening times for each washroom.

Before we start on site

  • Let us know about inductions and permits
  • For older buildings, check the asbestos register before work
  • Make sure the joints can be reached

Quotes

A handful of photographs and a postcode is the fastest way to a quote. Upload them with the quote form, or give us a call on 01277 525 020 or email drawings and photos to discuss it first.

Get a quick quote

Read more

Quoting for work in Otterbourne

To price the job, we consider:

  • How accessible the joints are
  • How much there is to seal
  • Location, for remote and island sites
  • The product specified

No two sites price the same: the joint sizes, the specified product, access and working hours each have a bearing. Send the details and a fixed figure follows.

What to include in your enquiry

Diagnosis starts before we arrive. Tell us:

  • Photos of the joints, close up and from further back
  • How the joints are reached, and at what height
  • The type of building and who uses it
  • Any specification or named product

Let us know the site, the scope and your timescale, and we’ll put a fixed quote together. To get it moving, phone 01277 525 020 or email us.

After the work

Cleaning and maintenance staff play a part too. Pass these on to them:

  • Keep extract fans working and vents clear
  • Squeegee showers and trays after busy periods
  • Clean sealant with gentle products and a soft cloth
  • Mention any site permits or estates rules at quote stage

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.

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

Why act early in Otterbourne

A tired washroom says a lot about how a building is run. Visitors notice black sealant before they notice much else. Resealing is a modest task with a very visible payoff. One visit to deal with every failing joint makes more sense than several trips to a place like Otterbourne, rather than one at a time. Photos of every joint help us quote for the whole job.

We don’t publish prices, since every building and every scope is different. For a fixed figure, call for a quote and we will price your job on its own details.

Why appoint us

  • RAL and finish matching where the product range allows
  • CHAS accredited contractor
  • Joints cleaned back to sound surfaces
  • Fully insured, including public liability cover

See how commercial sealant jobs are priced or our accreditations.

Accreditations

Trusted. Accredited. Insured.