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

Commercial washroom and wet-area sealing in Charlton, Hampshire

Washroom sealing for Charlton, from a contractor working since 2005. Fully insured and CHAS accredited.

  • Discoloured joints around urinals and WC pans
  • Failed joints along IPS and cubicle panels
  • Sealant stained black around basins and showers
1
Send details
Send the specification, photos or a marked-up plan.
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
Constructionline member
£5m public liability

Washroom sealing for Charlton sites

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

Washroom sealing in Charlton, done properly

You can’t shut every toilet in an office, school or hotel at once. Work is phased by room or by section, so staff, guests or pupils always have somewhere to go. Tell us your site hours and access windows and we will plan around them. The enquiries we see most involve sealant lifting along a tray edge and gaps where vanity tops meet the wall, on showers, trays and wet room floors, vanity units and basins and accessible toilets and changing rooms. Looking for mastic applicators who cover Charlton? Mastic Doctor has worked for contractors, FMs and building owners since 2005, with CSCS-carded applicators.

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

We sign every job off with a 12-month guarantee. It’s a plain promise: if our work fails within that year, we put it right.

Location
Charlton (SP10)
Wider area
Hampshire
Cover
12 months on our workmanship
Price
A fixed quote before we start
Phone
01277 525 020
Last updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

Leave it or put it right?

Sealing on top of old silicone saves nothing. Silicone won’t grip silicone, so it lifts and holds moisture underneath. Cutting out completely and cleaning back takes a little longer and lasts. Converted and older buildings near places like Charlton tend to move, and aged sealant cracks. A sealant with the right movement capability, correctly sized, lasts far better.

Cost follows what’s involved: stripping out, preparation, sealing, access and phasing. Call for a quote and we will explain how it’s made up.

What you get with us

  • Colours chosen to suit frames, cladding or finishes where possible
  • Failed material removed, not covered up
  • Clear, fixed quotes
  • Fully insured

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

General trades versus a specialist

What you see is the finished bead, but most of the work is hidden. Correct depth, the right primer and a sealant matched to the movement are easy to get wrong without experience.

Using site staff can make sense for a small touch-up, but anything bigger is another matter: a specialist brings efficiency, a consistent finish and a 12-month guarantee.

Quoting for work in Charlton

Your fixed quote is built from the real scope. It takes account of:

  • Distance, for remote addresses
  • Backing rod, priming and other preparation
  • How much there is to seal
  • Whether old sealant has to be cut out first

We don’t publish prices, because the scope varies so much from one building to the next. Call for a quote and we will price your job on its own details.

What to include in your enquiry

A good diagnosis starts with the right details. Let us know:

  • Rough lengths or quantities, or drawings if you have them
  • Whether an asbestos survey exists
  • The postcode of the building
  • Clear photographs of the problem areas

Every quote starts with the facts: the joints involved, quantities, access and the product called for. Send what you have, and we’ll arrange a site visit if anything is unclear.

Commercial washrooms in Charlton

The area within 2 miles of Charlton holds several hotels. Each has en suites, back-of-house toilets and kitchens with sealant that moulds and splits. The work can go floor by floor, agreed with housekeeping. Charlton lies roughly 64 miles out from central London. Washrooms in commuter-belt offices take constant weekday traffic, and resealing in phases keeps facilities available.

Hotels such as The Globe Hotel (1.4 miles south-east of Charlton) have en suite bathrooms where tired silicone at the bath, tray and basin is replaced room by room. Office toilets at parks like Mylen Road Business Park (0.8 miles south of Charlton) take steady weekday use, and mouldy silicone soon shows. On a healthcare site such as Andover War Memorial Hospital, which lies south-east of Charlton, washroom work starts with the infection-control team’s sign-off.

Charlton is about 1 mile north-west of Andover, in Hampshire. Commercial clients in Charlton use us for work on washrooms and wet areas, as part of our coverage of Hampshire. Across Hampshire, 723 places are covered, Charlton among them. Our Southampton page has more on work in that area.

Commercial sites across SP10 are covered for washrooms and wet areas. If your site is on Dacre Close, Home Farm Gardens and Augustine Way or close by, send details and we’ll quote for washrooms and wet areas. Just outside Charlton, we also work in Foxcotte (1 mile north-west), Penton Mewsey (1 mile west), Penton Corner (1 mile west), Penton Grafton (1 mile west) and Red Post Bridge (2 miles south-west). Bigger towns within reach include Winchester (14 miles south-east), Hyde (13 miles south-east), Tidworth (7 miles west), Weeke (13 miles south-east), Stanmore (14 miles south-east) and Ludgershall (6 miles north-west).

Local landmarks in Charlton

Around Charlton, our work takes us to commercial buildings near Portway Infant School. The nearest railway station is Andover station, about 0.8 miles south-east. Nearby you’ll also find Andover War Memorial Hospital (0.5 miles south-east) and Andover Museum (1.3 miles south-east). The countryside around Charlton includes Anton Lakes and Mill Lake.

Map of Charlton © OpenStreetMap contributors

Common questions from Charlton clients

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

Rarely. Rooms or floors are done in turn, so the rest of the hotel keeps trading. Housekeeping and our team agree each day’s rooms.

Could you schedule work at a campus like Andover College for the vacation?

Yes. Education sites typically want the work in vacations or in phases during term, and we plan to suit. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.

How much does the work cost?

That depends on the job: quantities, access, the product and any phasing. Call for a quote and we will price it properly.

Do you take on multi-site work?

Yes. Several buildings can share a single quote, with one point of contact across South East England, Greater London and Scotland.

Is it possible to just clean mouldy silicone?

Usually not. The mould is inside the silicone, so it comes back however often it’s cleaned. Replacing the bead is the lasting answer.

Which sealant will you use?

The specification comes first, if there is one. Without one, the joint decides: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.

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.

What the job involves on each surface

Healthcare and care settings

Clinics, hospitals and care homes need joints that can be kept clean. We work to your estates and infection-control requirements as well as site permits.

Kitchens and tea points

In commercial kitchens, smooth, cleanable joints help keep the kitchen hygienic. Where food contact is possible, we use a hygienic, food-safe sealant.

What we can’t put right

Sealant solves a lot, but not everything, and we’d rather tell you before you spend money. These need a different solution:

  • Leaking pipes, traps, wastes or cisterns, which need a plumber
  • Condensation from failed extract fans
  • Swollen or delaminated boards behind panels or vanity tops

If you are not sure, just ring 01277 525 020 or email the details over and we will give you a straight answer.

What we seal

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

Our process

We bring the products specified for the job, along with primers and backing rod. Joint faces are cleaned back to sound, dry surfaces, the manufacturer’s primer is applied where it’s called for, and each bead is tooled to a neat concave finish. Rural sites near Charlton may need directions, gate codes or a contact on site. Add it to your enquiry and we’ll build it into the plan.

  1. First, the phasing is agreed so facilities stay open.
  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 give you a reopening time for every room.

Preparing the site

  • For older buildings, check the asbestos register before work
  • Flag any permit to work we will need
  • Point out parking and an unloading spot

Quotes

For a fixed quote, ring 01277 525 020 or send photos by email with the site address and an outline of the work. You can also send details through our quote form.

Get a price

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