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

Washroom Sealing contractors in Upper Common

Our CSCS-carded applicators take on sealing in commercial washrooms, showers, kitchens and wet areas in Upper Common and the surrounding area. Send details for a fixed quote.

  • Open joints along basins and vanity units
  • A new bead over an old one coming away
  • Stained sealant around pans and urinals
1
Send details
Drawings, photos, a joint schedule or a site 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
Signed off, with 12 months’ guarantee.
Covering the South East & Scotland
CHAS accredited
£5m public liability

Washroom sealing in Upper Common

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

Diagnose, treat, sign off

Where the site stays busy, the work is phased so only one area is out of use at a time. Each section is protected, cleaned back and sealed before we move to the next. Smaller jobs around Upper Common can be grouped with others nearby. A fixed quote is given before anything starts.

  1. We inspect each washroom and record the joints to be resealed.
  2. You get a fixed quote with the phasing plan.
  3. Old sealant is removed completely and the faces cleaned.
  4. Each joint is cleaned and left dry.
  5. A sanitary silicone bead is laid and given a smooth tooled finish.
  6. Rooms reopen after the cure time.

Preparing the site

  • For older buildings, check the asbestos register before work
  • Send any specification or drawings in advance
  • Explain the parking and delivery arrangements

Getting a fixed quote

Send us photographs, drawings or a joint schedule are often enough for a fixed quote. If the job needs a look first, we will arrange a site visit.

Ask for a quote

Related advice

Washroom sealing in Upper Common

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 mould that roots into it can’t be cleaned away. The fix is to remove it completely and reseal with sanitary silicone containing anti-mould additives. The enquiries we see most involve shower tray joints that have opened up and stained sealant around pans and urinals, on vanity units and basins, urinals and WCs and accessible toilets and changing rooms. Most enquiries from Upper Common start with one failed joint and grow into a wider look at the building: we look at the rest while we are there and tell you what we find.

Rural businesses near smaller places such as Upper Common, from cafés to event venues, rely on washrooms and kitchens that stay clean. Tell us your opening times and quiet periods and we will plan around them.

The 12-month guarantee covers our workmanship: preparation, application and finish. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.

Place
Upper Common (RG25)
Wider area
Hampshire
Cover
12 months on our workmanship
Price
A fixed quote before we start
Telephone
01277 525 020
Updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

For managing agents and facilities managers

Whether you’re a managing agent, a property factor or an owner’s representative: send the details, accept a fixed quote, and we carry out and guarantee the work. We can agree access arrangements and keyholder contacts beforehand.

Hotels, schools, healthcare sites, offices and retail units come to us directly as well. We plan around the way the building is used, so the building keeps working while we do.

Do you need washroom sealing in Upper Common?

Much of the failed sealant we remove was applied over old silicone or residue. Silicone won’t adhere to a silicone bead so it peels away quickly.

Look out for the following:

  • Panel joints letting water behind
  • Sealant lifting along a tray edge
  • Urinal joints that look unhygienic
  • A new bead over an old one coming away

Healthcare washrooms on sites such as Basingstoke and North Hampshire Hospital (5.2 miles north of Upper Common) are resealed area by area, under the site’s own infection-control rules.

Questions to ask before you book

  • Who will actually carry out the work
  • What level of public liability insurance do they hold?
  • Which product they’ll use, and why it suits the joint
  • Can the work be phased to keep areas open?

Questions to ask before you appoint anyone

Upper Common: questions and answers

Can you work on a hospital site such as Basingstoke and North Hampshire Hospital?

Yes. We work in healthcare settings as well as offices and schools. We follow the site’s permits, sign-in and infection-control procedures in every area.

Will the toilets in our Upper Common building be out of use?

Rarely all at once: work is phased so some facilities are always available. Each area is handed back once the sealant has cured enough to use.

When can showers be used after new sealant?

That varies with the sealant and the room temperature. Each room gets its own reopening time from us, and signs stay up until then.

Which silicone is right for commercial washrooms?

Each area gets the grade that suits it. Most washroom joints take sanitary silicone while kitchens may need a food-safe grade.

Can washrooms stay open while you work?

Just the room being resealed is out of use. Rooms go back into use once the sealant has cured and we start the next.

Do you take on multi-site work?

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

Does weather matter for sealant work?

It can, when the joints are outside. 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.

General trades versus a specialist

Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.

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.

How the quote is worked out

What shapes the price:

  • How much there is to seal
  • Which sealant the job calls for
  • Location, for remote and island sites
  • Removal of failed or old sealant

Access can matter as much as the joints themselves: joints within easy reach take less time than ones that need access equipment. Mention the access as part of your enquiry.

Details that help us quote

Diagnosis starts before we arrive. Let us know:

  • The postcode of the building
  • Asbestos survey details if the building is older
  • The type of building and who uses it
  • Rough lengths or quantities, or drawings if you have them

A good quote starts with a clear picture: the joints involved, quantities, access and the product called for. Share whatever details you have and we will fill any gaps with a visit.

Wet areas in Upper Common’s workplaces

Upper Common is about 48 miles from central London, within the office belt around the capital. Business park offices have washrooms in daily use by staff, so we phase work to keep some facilities open.

Office washrooms on sites such as Viables Business Park (to the north of Upper Common) are in use all working day, so resealing is phased to keep some open. Halls linked to places like Church of St. Martin host groups all week, which is hard on kitchen and toilet sealant.

Upper Common is about 4 miles south of Basingstoke, in Hampshire. Commercial clients in Upper Common use us for work on washrooms and wet areas, as part of our coverage of Hampshire. Across Hampshire, 723 places are covered, including Upper Common. There’s a separate page for Reading, roughly 18 miles from Upper Common.

Business premises anywhere in RG25 are within our area for washrooms and wet areas. Nearby places we also cover include Ellisfield (1 mile north-east), Cliddesden (2 miles north), Nashes Green (3 miles east), Viables (3 miles north) and Eastrop (4 miles north) for washrooms and wet areas. Nearby towns on our patch include Basingstoke (4 miles north), Winchester (14 miles south-west), Fleet (12 miles north-east), Aldershot (15 miles east), Alton (6 miles south-east) and Petersfield (15 miles south-east).

Local landmarks in Upper Common

Around Upper Common, our work takes us to commercial buildings near The Fox pub. Upper Common’s nearest station is Basingstoke station, about 4.4 miles north. Other landmarks nearby include Barton Castle (4.6 miles south) and Gliding Heritage Centre (3.5 miles south-east). The countryside around Upper Common includes Farleigh Hill.

Map of Upper Common © OpenStreetMap contributors

Why deal with it now?

Bleaching black sealant may lighten it for a few days, but the mould is rooted in the silicone and comes back. A full reseal deals with it and your cleaning team stops chasing it. Around Upper Common, it’s better to renew all the failing joints at once. Send photos of each area and we will quote for the lot.

Small jobs and large programmes are priced from the same things: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote and we will put a fixed figure on it.

Why clients in Upper Common choose us

  • Matching to RAL references, product permitting
  • CHAS accredited contractor
  • Products installed to the manufacturer’s instructions
  • 12-month guarantee on workmanship

Read our cost guide and our accreditations.

Accreditations

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