Washroom Sealing contractors in Keston
Sealing in commercial washrooms, showers, kitchens and wet areas in Keston. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Mould spotting along silicone joints
- Sealant lifting along a tray edge
- Failed sealant behind washroom basins
Washroom sealing near Keston
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Washroom sealing in Keston, done properly
In a commercial washroom, sealant is normally the first thing to wear out. Around basins, urinals, cubicles, IPS panels and shower trays it takes water, soap, cleaning chemicals and knocks every day 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. We work on vanity units and basins, IPS panels and cubicles and showers, trays and wet room floors, and the failures we’re asked to look at most are mould spotting along silicone joints and open joints along basins and vanity units. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: in Keston, that means joint design, primers and backing rod as standard.
In Keston, as across London, commercial kitchens and washrooms need sealed joints that can be cleaned properly. We use sanitary and hygienic sealants, choosing food-safe products where food may touch the surface.
Building owners and contractors get the same cover: twelve months on the work we carried out. Faults in the structure, damage and other trades’ work fall outside it, and we say so plainly.
- Location
- Keston (BR2)
- Wider area
- Greater London
- Cover
- A 12-month guarantee
- Quotes
- A fixed quote before we start
- Call
- 01277 525 020
- Updated
- 3 November 2026
Why deal with it now?
A tired washroom says a lot about how a building is run. Visitors notice black sealant before they notice much else. Fresh sanitary silicone lifts a room with very little disruption. Repeat call-outs disrupt occupied London buildings, so a proper job first time, with the old sealant fully removed, is worth it.
Cost follows what’s involved: stripping out, preparation, sealing, access and phasing. Call for a fixed quote and we will explain how it’s made up.
What you get with us
- Health and safety: CHAS accredited
- Colour options checked against the specified product
- Work to your specification and the manufacturer’s guidance
- RAL and finish matching where the product range allows
See our cost guide or our accreditations.
Our process
Tell us your site hours and access windows and we will plan around them. While we’re working, the area stays contained and tidy, and your contact hears from us before we move to the next area. Most London premises stay occupied while we’re on site, so zones and timings are agreed with whoever manages the building. Areas are handed back as each section is finished.
- We inspect each washroom and record the joints to be resealed.
- You get a fixed quote with the phasing plan.
- The whole of the old bead is removed.
- Joints are degreased and dried.
- New anti-mould sealant goes in and is tooled neat.
- Rooms reopen after the cure time.
Before we start on site
- Arrange parking or a loading space
- Let building users know which areas are affected
- Make sure the joints can be reached
Ask for a quote
If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price against exactly what is specified. For smaller jobs, photographs and a description will do.
Advice
Honest limits
Before quoting, we check that sealant is the right answer. It won’t put right:
- Loose panels, vanity units or tiles, which need fixing first
- Leaks through tanking or membranes below the finishes
- Water from plumbing, not from a joint
Not sure which it is? You can ring 01277 525 020 or send details through our quote form and we will tell you honestly before you book.
What we seal
- Accessible toilets and changing rooms
- Urinals and WCs
- Vanity units and basins
- IPS panels and cubicles
- Showers, trays and wet room floors
- Kitchens and tea points
Questions we are asked in Keston
Will you plan work around the academic year at somewhere like Shaftesbury Nash College?
Yes. Tell us the term dates, vacation periods and access windows, and we will plan the work around them. We are CHAS accredited and a Constructionline member, and paperwork such as RAMS is confirmed with the quote.
Can you cope with the access rules in a London building?
Yes. Booked loading bays, goods lifts and permit-to-work systems are normal for London jobs. Send the building rules and access times with your enquiry. We allow for the ULEZ, which covers every borough
Do you need to see the site first?
Photos, drawings or a schedule are often enough to quote. If the job needs a look first, we’ll arrange a visit.
How long does a job like this take?
The duration is planned around your programme and the access we’re given. We’ll give you an estimate of time on site when we quote.
Are you fully insured?
Yes. Mastic Doctor is fully insured, public liability included.
Does the weather affect the work?
It can, for external work. Sealant won’t bond properly to a wet or frosty joint, so external work may be moved if conditions aren’t right. Indoors, the weather is rarely a problem.
What if there’s asbestos in the old mastic?
Managing asbestos is the dutyholder’s responsibility, so we’ll ask for the register before work on an older building. Work pauses if suspect material is found, until it has been tested.
Commercial clients in Keston
As a CHAS accredited contractor and Constructionline member, we are straightforward to vet for your supplier list. Our insurance certificate can be sent along with the quote.
We take on planned maintenance as well as one-off repairs: resealing failed joints building by building, on a schedule that suits your budget. Keston can form part of a wider programme.
Places near Keston
What else we do in Keston
When to bring in a specialist
Redoing a failed joint typically costs more than getting it right at the outset, because the whole bead must be removed and the faces cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.
For most general trades, sealant is a sideline. A specialist prepares properly, controls joint depth and picks a product with the right movement class.
Toilets, showers and kitchens around Keston
London offices and hotels usually can’t close all their washrooms at once, which is why the work is split into phases agreed in advance. Three care or nursing homes sit less than 2 miles from Keston. In care settings, wet rooms, assisted bathrooms and en suites rely on clean, sound sealant. Work is agreed with the manager, around residents’ routines.
Office washrooms on sites such as Glebe Farm Business Park (0.8 miles south of Keston) are in use all working day, so resealing is phased to keep some open. Halls linked to places like Keston Parish Church host groups all week, which is hard on kitchen and toilet sealant. At a school such as Keston Church of England Primary School, changing rooms and kitchens need cleanable joints as much as the toilets.
Keston is about 3 miles south of Bromley, in Greater London. We send applicators to Keston for washrooms and wet areas. We work across 764 places in Greater London, from busy centres to rural villages. London is covered too, some 11 miles away.
Work on washrooms and wet areas is covered throughout BR2, for business premises of every kind. Buildings on Church Road, Greys Park Close and Heathfield Road are within our area for washrooms and wet areas. Close to Keston, our area also takes in Nash (1 mile west), Farthing Street (1 mile south-east), Locksbottom (1 mile north-east), Leaves Green (2 miles south) and Hayes (2 miles north-west). Further afield, our area takes in London (11 miles north-west), City of Westminster (13 miles north-west), Marylebone (13 miles north-west), Kensington (14 miles north-west), St Pancras (13 miles north-west) and Shoreditch (12 miles north).
Around Keston
Recent enquiries here include premises near South Park, Ravens Wood School and The Greyhound pub, among other places. Keston’s nearest station is Hayes (Kent) station, roughly 1.5 miles north-west. Other landmarks nearby include Princess Royal University Hospital (1.1 miles east) and Bethlem Museum of the Mind (1.5 miles north). For a walk, there’s West Kent Golf Course nature reserve and Summer Hill.
Cost factors for washrooms and wet areas
Before we quote, we look at:
- Induction, permit and paperwork requirements
- Working within restricted access windows
- How much there is to seal
- Any access equipment needed
Quantities, awkward access and phased working all shape the price. Site requirements like inductions and permits play a part as well, along with the time of year for external work.
What to include in your enquiry
A few photos plus some basic facts will normally do. Please tell us:
- Any dates the work must fit around
- Clear photos of the problem areas
- The postcode of the building
- Asbestos survey details if the building is older
Pricing a project or setting a maintenance budget? We’ll quote against your scope and drawings that you can work with. If you have questions first, call the office on 01277 525 020 or email a schedule or drawings.