Commercial washroom and wet-area sealing in Coombe, Greater London
We carry out sealing in commercial washrooms, showers, kitchens and wet areas in Coombe. Send photographs or drawings for a fixed quote.
- Failed joints along IPS and cubicle panels
- Open joints along basins and vanity units
- Split or peeling sealant at shower trays
Washroom sealing across Coombe
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Washroom sealing for commercial buildings in Coombe
Not every silicone belongs in a washroom. Sanitary grades carry anti-mould additives, and neutral-cure types are used where acetoxy silicone could attack some metals, stone or mirror backings. In food areas, hygienic or food-safe sealants are used where food contact is possible. If you have washrooms that look worn because of the sealant and stained or open joints at kitchen sinks and worktops, we can help, on accessible toilets and changing rooms, showers, trays and wet room floors and vanity units and basins alike. Looking for mastic applicators who cover Coombe? We have been sealing commercial buildings since 2005, with CSCS-carded applicators.
Many London buildings can’t close every toilet at once. We work through washrooms floor by floor or core by core, at times agreed with you, so staff and visitors can always find an open washroom.
Every job is signed off with a 12-month guarantee. The promise is simple: if our work fails within that year, we put it right.
- Location
- Coombe (KT2, KT3, SW20)
- Region
- Greater London
- Cover
- 12 months on every job
- Quote
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Updated
- 3 November 2026
Our process
Diagnose, treat, sign off: that’s the shape of every visit. First comes an inspection and agreement on scope, then we prepare and seal each joint with the specified product, and we finish with a walk round so the work can be signed off. Planning a London job such as one in Coombe starts with access. Send the building rules and access times with your enquiry.
- Every washroom is checked joint by joint, with loose panels, leaks or damp noted for the right trade.
- We agree which rooms close and when, so users always have somewhere to go.
- The failed silicone is stripped and every face scraped clean of residue.
- Joints are cleaned, degreased and dried before sealing.
- We lay a sanitary silicone bead and tool it smooth so it is easy to clean.
- Each room is handed back once the sealant has had its cure time.
Before we start on site
- Explain the parking and delivery arrangements
- Tell us your opening times and when work is allowed
- Send asbestos survey details if the building is pre-2000
Quotes
Specifications, drawings and tender packages are welcome with any enquiry, and we’ll price against exactly what is specified. For smaller jobs, photographs and a description will do.
Related advice
General trades versus a specialist
Putting right a botched joint often costs more than sealing it well at the start, because the whole bead must be removed and the faces cleaned back again. That’s why many clients bring in a specialist from the beginning.
There’s also the paperwork. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we’ll confirm the paperwork you need with the quote.
What else we do in Coombe
After the work
To get the most from the new sealant:
- Squeegee showers and trays after busy periods
- Tell us about infection-control or permit rules before we quote
- Report faulty extraction promptly
- Photograph and log failed joints across the estate
Add washroom sealant to routine inspections. Check for mould spots, splits, lifting edges and open joints at trays, basins and urinals and photograph anything new.
Leaks through tray and wet-floor joints can go unseen until a ceiling marks below. By then, other trades may be needed as well, so reseal when you first spot a split.
Your questions answered
Do hotels near Coombe have to close for sealant work?
Almost never. The work is phased so most rooms stay available. We agree the order of rooms and the timings with you before we start.
Can you work in a care home near Coombe with residents in?
Yes. We work around residents’ routines, a room or two at a time. We follow the home’s own procedures throughout.
Is it OK to put new silicone on top of the old?
The whole of the old bead is removed and the surfaces cleaned before resealing. That’s what makes the new joint last.
Can you quote from photos?
It depends on the job. Simple work can often be priced from photos, and bigger or more complex jobs normally get a visit.
Is it possible to just clean mouldy silicone?
Surface cleaning won’t reach mould that has rooted into the bead. New anti-mould sanitary silicone is the treatment and point out if ventilation is part of the problem.
What about RAMS and site documents?
Requirements differ from site to site, so list what you need, whether RAMS, insurance or CSCS details, and we’ll confirm with the quote.
What do you charge?
That depends on the job: the volume of work, the access, the specified product and how it’s phased. Call for a fixed quote and we will price it properly.
Wet areas in Coombe’s workplaces
Busy London buildings need some toilets open at all times, so resealing goes floor by floor, agreed with the facilities team. A 2-mile radius around Coombe takes in a good number of hotels. Behind every hotel door there’s a bathroom whose sealant will need renewing sooner or later.
At a college such as Interprime College London, which lies south of Coombe, washroom and kitchen sealant is best renewed in the holidays or in phases during term. Toilets at places like Bentall Centre (1.8 miles west of Coombe) are cleaned constantly, so silicone needs to be sound and smooth.
Coombe is about 1 mile north of New Malden, in Greater London. Commercial clients in Coombe can call on us for washrooms and wet areas. Our Greater London coverage takes in 764 places, from busy centres to rural villages. London is covered too, some 9 miles away.
Postcode districts covered here: KT2, KT3 and SW20. Buildings on West Road, Crown Road and Traps Lane are within our area for washrooms and wet areas. Close to Coombe, our area also takes in Motspur Park (1 mile south-east), Coombe Hill (1 mile north), Kingston Vale (1 mile north-east), Norbiton (1 mile south-west) and New Malden (1 mile south). A short drive away, we cover London (9 miles north-east), City of Westminster (8 miles north-east), Marylebone (8 miles north-east), Kensington (6 miles north-east), St Pancras (10 miles north-east) and Shoreditch (11 miles north-east).
What’s near Coombe
Around Coombe, our work takes us to commercial buildings near Canbury School, Coombe Girls' School and The Royal Oak Public House. The nearest railway station is Norbiton station, roughly 1 mile south-west of the centre. Nearby you will also find Bentall Centre (1.8 miles west) and White Lodge Museum (1.8 miles north). Open spaces near Coombe include Kew Gardens Lake and Kingston Hill Road area.
Leave it or put it right?
Open or mouldy joints are hard to keep hygienic, and in kitchens, clinics and schools that is a real concern. Sound, smooth joints are much easier to keep clean. Getting scaffold, permits or access booked in Coombe takes effort, so it makes sense to deal with every failing joint while access is in place.
Pricing washrooms and wet areas depends on quantities, condition and access, and any specification that applies. Call for a quote.
Why choose Mastic Doctor in Coombe
- Joints cleaned back to sound surfaces
- Specification-led, product-correct work
- 12-month guarantee on workmanship
- Constructionline member for supplier checks
See our cost guide and our accreditations.
When to call us in Coombe
Low-level joints get hit by mop buckets, cleaning trolleys and feet, especially at floor edges and around urinals and WC pans.
Look out for the following:
- Failed sealant behind washroom basins
- Stained sealant around pans and urinals
- Failed joints along IPS and cubicle panels
- Stained or open joints at kitchen sinks and worktops
For buildings on a site such as Shannon Commercial Centre (1.5 miles south-east of Coombe), washrooms and tea points can be resealed in phases through the working week.
Before you book anyone
- Which product they’ll use, and why it suits the joint
- The terms of the workmanship guarantee
- What level of public liability insurance do they hold?
- Can the work be phased to keep areas open?
Honest limits
Our job is the joint, not everything around it. Sealant alone won’t deal with:
- Fittings that move too much to hold a bead
- Water from plumbing, not from a joint
- Swollen or delaminated boards behind panels or vanity tops
If you’re not sure, just phone 01277 525 020 or use the quote form and we’ll give you a straight answer before you book.
Surfaces we seal
- IPS panels and cubicles
- Kitchens and tea points
- Accessible toilets and changing rooms
- Urinals and WCs
- Vanity units and basins
- Showers, trays and wet room floors