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

Washroom Sealing in Shawford

Sealing in commercial washrooms, showers, kitchens and wet areas throughout Shawford and nearby, carried out by CSCS-carded applicators. Fully insured and CHAS accredited.

  • Failed sealant in a tea point or staff kitchen
  • Black mould inside silicone joints that cleaning can’t shift
  • A new bead over an old one coming away
1
Send details
Photos, drawings or a schedule, or we 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.
Covering the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Washroom sealing near Shawford

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

About our washroom sealing in Shawford

Accessible WCs, showers and changing areas have their own pinch points: wet-floor edges, tray perimeters, basin tops and the line where flooring meets the wall. Gaps in those places let water get under the floor or behind panels so they get particular attention. If you are dealing with stained or open joints at kitchen sinks and worktops and open joints along basins and vanity units, we can help. Whoever orders the work in Shawford, the brief is typically the same: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

Halls and community buildings near places like Shawford are used by different groups through the week, and their toilets and kitchens show it. Resealing sinks, worktops and WCs with anti-mould silicone keeps them clean and watertight.

Our workmanship is guaranteed for 12 months. If our installation lets you down in that time, we return and fix it.

Location
Shawford (SO21)
Wider area
Hampshire
Guarantee
A 12-month guarantee
Quote
Quoted before any work starts
Telephone
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

How a job runs

Before any cutting starts, the area is protected: tape along each joint edge and covers over finishes, stock and equipment close by. On site, the work typically takes between a morning and a week or so, set by the number of rooms and the phasing you need, and we clear our waste as we work. Jobs in and around smaller places like Shawford are normally planned as a single visit, so we ask for photographs and rough sizes first. Then the right materials arrive with us.

  1. We start by inspecting the fittings and joints and flagging problems sealant can’t solve.
  2. The phasing is agreed so there are always facilities open.
  3. We strip out the old bead and clean off the residue left behind.
  4. Each joint is degreased and left dry, because silicone won’t bond to damp or soapy surfaces.
  5. New sanitary silicone with anti-mould additives goes in and is tooled neat.
  6. You get a reopening time for every room, with signage left up until then.

Preparing the site

  • Explain the parking and delivery arrangements
  • Send asbestos survey details if the building is pre-2000
  • Move anything stored against the joints

Getting a fixed quote

Photos, drawings or a schedule of the joints are often enough for a fixed quote. If the job needs a look first, we will arrange a site visit.

Ask for a quote

Read more

Honest limits

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

  • Leaking pipes, traps, wastes or cisterns, which need a plumber
  • Panel boards already damaged by water
  • Failed tanking beneath a wet-room floor or behind tiles

If in doubt, speak to us on 01277 525 020 or send photos by email and we’ll say what we think before you book.

Joints and surfaces we work on

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

Work for main contractors and building owners

Planned maintenance programmes are welcome: resealing failed joints building by building, on a schedule that suits your budget. Sites in Shawford can sit alongside others in a wider programme.

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

Do you need washroom sealing in Shawford?

Decorators’ caulk and general sealants sometimes end up where sanitary silicone belongs. They aren’t made for constant wetting and they discolour and fail early.

If one of these sounds familiar, it’s time for a closer look:

  • Kitchen worktop joints that can’t be kept clean
  • Washrooms that look worn because of the sealant
  • A new bead over an old one coming away
  • Shower tray joints that have opened up

Halls of residence and teaching buildings at universities such as University of Winchester, 2.6 miles north of Shawford, are easiest to reseal during vacations.

Comparing quotes

  • Their public liability cover
  • How long is the guarantee, and what does it include?
  • Will RAMS and insurance details be available?
  • How the joint faces will be prepared and primed

Choosing a commercial sealant contractor

Leave it or put it right?

When a washroom looks worn, a refit isn’t the only answer. Where tiles, panels and fittings are sound, new sealant may be enough to put it right while bigger works are planned. Around Shawford, it’s better to renew all the failing joints at once. Photos of every joint help us quote for the whole job.

There’s no price list, because the scope varies so much from one building to the next. For a fixed figure, call for a quote.

Why appoint us

  • Matching to RAL references, product permitting
  • Products installed to the manufacturer’s instructions
  • Over 20 years of commercial sealing
  • Constructionline member for supplier checks

Read what affects the cost or how we’re accredited.

When to bring in a specialist

General builders and handymen seal joints, but it isn’t their main trade. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint, which is what makes a joint last.

Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and our CSCS-carded applicators are used to working under those rules.

Common questions from Shawford clients

Can you work around term dates at a campus such as University of Winchester?

Yes, holiday working periods are the norm on campus jobs. Let us know which documents your site asks for, and we’ll confirm them alongside the quote.

Can you take on a job at a hospital such as Wessex Hospital?

Yes, hospitals are one of the sectors we cover. Each area is agreed with the ward or department and the estates team in advance.

Are you CHAS accredited?

Yes. We are CHAS accredited and a Constructionline member, which helps with supplier vetting.

How long will the new sealant last?

There isn’t a single answer, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular inspection is the best way to catch problems early.

When can showers be used after new sealant?

Cure times vary by product and temperature. You will get a reopening time for each area, and signs stay up until then.

Is there a guarantee on the work?

A 12-month guarantee covers the work. It applies to our workmanship, not to plumbing leaks or damp from poor ventilation.

Can you clean the mould off instead of resealing?

Cleaning may lighten it, but the mould returns. We replace the sealant with an anti-mould sanitary grade and point out if ventilation is part of the problem.

Keeping Shawford washrooms open while we work

Central London is about 63 miles from Shawford, within the office belt around the capital. Office toilets in the commuter belt are in use from first arrivals to last departures, so we phase work to keep some facilities open.

Staff changing rooms and patient toilets at places like Wessex Hospital, 2.4 miles south-west of Shawford, need cleanable, sound silicone. Pupil toilets at schools like Compton All Saints Church of England Primary School take heavy daily use, and the holidays give the window to reseal.

Shawford is about 3 miles south of Winchester, in Hampshire. We cover commercial sites throughout Shawford. We work across 723 places in Hampshire, large and small. Our Southampton page has more on work in that area (8 miles or so).

We cover the SO21 postcode districts for washrooms and wet areas. If your site is on Shawford Road and Pearson Lane or close by, send details and we will quote for washrooms and wet areas. If your building is just outside Shawford, we cover Compton (1 mile west), Twyford (1 mile south-east), South Down (1 mile south-west), Otterbourne (1 mile south-west) and St Cross (2 miles north). A short drive away, we cover Winchester (3 miles north), Eastleigh (4 miles south), Fareham (13 miles south-east), Andover (15 miles north-west), Totton (11 miles south-west) and Chandler's Ford (4 miles south-west).

What’s near Shawford

We work on buildings around The Bridge Inn and St. Cross Park and the streets around them. There’s a railway station in Shawford itself: Shawford station. Well-known places in the area include The Gurkha Museum (2.3 miles north) and Royal Hampshire County Hospital (2.7 miles north). Green spaces nearby include Twyford Down and Hockley Meadows.

Map of Shawford © OpenStreetMap contributors
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