
Commercial washroom and wet-area sealing in Dunbridge, Hampshire
Sealing in commercial washrooms, showers, kitchens and wet areas throughout Dunbridge and nearby, carried out by CSCS-carded applicators. Fully insured and CHAS accredited.
- Black mould inside silicone joints that cleaning can’t shift
- Split or peeling sealant at shower trays
- Kitchen worktop joints that can’t be kept clean
Washroom sealing near Dunbridge
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Washroom sealing in Dunbridge, done properly
Accessible WCs, showers and changing areas have their own pinch points: shower trays, wet-room floor edges, basins and floor-to-wall junctions. Gaps in those places let water get under the floor or behind panels so they get particular attention. If you’re dealing with shower tray joints that have opened up and kitchen worktop joints that can’t be kept clean, we can put it right, on showers, trays and wet room floors, kitchens and tea points and accessible toilets and changing rooms alike. A single leaking joint is often how a building in Dunbridge first comes to us: we check the joints around it and give you an honest view of what needs doing now and what can wait.
Smaller places such as Dunbridge still have commercial washrooms and kitchens: in halls, pubs, schools, care homes and farm-based businesses. Sealant that has gone black with mould usually can’t be cleaned, so it is cut out and replaced.
We stand behind the joints we seal with a 12-month guarantee. That covers our preparation and application, and we come back if anything isn’t right.

- Location
- Dunbridge (SO51)
- Region
- Hampshire
- Cover
- A 12-month guarantee
- Price
- Quoted before any work starts
- Phone
- 01277 525 020
- Updated
- 3 November 2026
Aftercare for building managers
Problems stay small when the joints are checked regularly. In particular:
- Clean sealant with gentle products and a soft cloth
- Keep washrooms out of use until we say the sealant has cured
- Add sealant joints to planned maintenance checks
- Tell us about infection-control or permit rules before we quote
Ventilation is half the battle. A room that stays damp will grow mould on almost anything, so get faulty extract looked at.
Small numbers of failed joints are quick to phase in. Left until every washroom is affected, it becomes a bigger programme with more phasing to plan.
Places near Dunbridge
Other services in Dunbridge
On site: what to expect
When we get to site, we report to your site contact and complete whatever induction the building runs. Everything around the joints gets protected before any cutting starts, and the work usually takes a morning or so for a small washroom, longer where showers and changing rooms are included. For a building around Dunbridge, tell us how to find it and who will meet us. Send that with the details and we’ll confirm the plan with the quote.
- First, the phasing is agreed so facilities stay open.
- Anything behind the joints that needs another trade is flagged.
- Old sealant is stripped and the faces prepared.
- We reseal with the grade suited to each area.
- We confirm reopening times for each washroom.
Preparing the site
- Let us know about inductions and permits
- For older buildings, check the asbestos register before work
- Point out any areas we must not close
Request a quote
Specifications, drawings and tender packages are welcome with any enquiry, and we’ll price the work to it. Smaller jobs need nothing more than photos and a few notes.
Related advice
Doing it in-house
There’s also the paperwork. Many sites expect CSCS cards, RAMS and proof of insurance, and we will confirm the paperwork you need with the quote.
Some joints are best left to specialists: for example fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. Getting these wrong usually costs more in the end than doing them right.
Common questions from Dunbridge clients
Is Dunbridge too far out for you?
Not at all. Dunbridge is within our area. We cover Greater London and the counties of the South East. Send photos and a list of what needs doing, and we’ll plan the job to need as few trips as possible.
Is hospital work, at somewhere like Romsey Community Hospital, something you do?
Yes, hospitals are one of the sectors we cover. We follow the site’s permits, sign-in and infection-control procedures in every area.
How do you choose the sealant?
The specification comes first, if there is one. Without one, the joint decides: its movement, its surfaces and what it has to cope with.
When is resealing likely to be due?
There isn’t a single answer, since movement, weather, cleaning and use all affect it. Regular inspection is the best way to catch problems early.
Do you use special sealant for toilets and showers?
It depends on the joint. Washrooms and showers take anti-mould sanitary silicone, and food areas take a hygienic, food-safe sealant where food contact is possible.
How long before the toilets can reopen?
That varies with the sealant and the room temperature. Each room gets its own reopening time from us, and signs stay up until then.
Do you have public liability insurance?
Yes. Mastic Doctor is fully insured, public liability included.
Why it’s worth doing now in Dunbridge
Leaving the job until a shutdown often means living with it for months. Phasing lets it happen now, with facilities kept in use. For buildings around smaller places like Dunbridge, water damage can go unnoticed for longer, especially where a building isn’t used daily, so a failed joint can leak for a while before anyone sees it. Renewing joints in good time avoids the problem.
Small jobs and large programmes are priced from the same things: scope, access, product and programme. Call for a quote and we’ll put a fixed figure on it.
Why appoint us
- 12 months’ guarantee on every job
- Coloured sealants to suit the setting, where available
- Public liability insurance in place
- CHAS accredited contractor
Take a look at what affects the cost or how we’re accredited.
Washroom sealing in Dunbridge: the local picture
Central London is about 70 miles from Dunbridge. Office washrooms on business parks see heavy weekday use, so we phase work to keep some facilities open.
For buildings on a site such as Home Farm Business Centre, 2.1 miles to the north-west of Dunbridge, washrooms and tea points can be resealed in phases through the working week. Where you are responsible for a hall attached to a building such as Church of St Andrew, its kitchen and toilets need sealant that stays cleanable. Staff changing rooms and patient toilets at places like Romsey Community Hospital (3.9 miles south-east of Dunbridge) need cleanable, sound silicone.
Dunbridge is about 4 miles north-west of Romsey, in Hampshire. Dunbridge sits inside our coverage, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Dunbridge is one of 723 places we cover in Hampshire for washrooms and wet areas. Southampton is covered too, some 10 miles away.
Anyone looking for washroom sealing in SO51 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. If your building is just outside Dunbridge, we cover Mottisfont (1 mile north-east), Kimbridge (1 mile south-east), Stonymarsh (1 mile north-east), Carter's Clay (1 mile south-west) and Lockerley (1 mile west). Further afield, our area takes in Winchester (10 miles east), Eastleigh (10 miles south-east), Andover (13 miles north), Totton (8 miles south), Chandler's Ford (8 miles south-east) and Hedge End (13 miles south-east).
Around Dunbridge
Recent enquiries here include premises near The Bear And Ragged Staff Public House, among other places. There’s a railway station in Dunbridge itself: Mottisfont & Dunbridge station. Well-known places in the area include Romsey Community Hospital (3.9 miles south-east) and King Johns House (3.5 miles south-east).
What the job involves on each surface
IPS and cubicle panels
Panels flex slightly in use so the bead needs to cope with it. Loose panels are flagged before any sealant goes on.
Basins and vanity tops
Basin joints get wet every time someone washes their hands, so the wall joint and bowl surrounds tend to fail before anything else. We remove the old bead and lay a fresh one of sanitary silicone.
Quoting for work in Dunbridge
There’s no standard rate for sealant work, since sites vary so much. What we look at:
- How much existing material needs removing
- The total length or number of joints
- Backing rod, priming and other preparation
- How accessible the joints are
There’s no price list, 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.
What to include in your enquiry
Good information means a firmer quote. Helpful details to send:
- The site address and postcode
- Access details, including height
- Whether the building will be occupied during the work
- Whether an asbestos survey exists
Pricing a project or setting a maintenance budget? We will quote against your scope and drawings you can plan around. For a chat about it beforehand, call the office on 01277 525 020 or email us.