Commercial washroom and wet-area sealing in Colindale, Greater London
Commercial sealant work in Colindale for contractors, FMs and building owners: sealing in commercial washrooms, showers, kitchens and wet areas, quoted at a fixed price.
- Users noticing mouldy joints
- Gaps where vanity tops meet the wall
- Urinal joints that look unhygienic
Need washroom sealing in Colindale?
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Questions about Colindale
Would you work within a site like BMI Hendon Hospital?
Yes. Healthcare sites are among the places we work. Each area is agreed with the ward or department and the estates team in advance.
Can you cope with the access rules in a London building?
Yes, we plan every London job around the building’s own access rules. The building manager’s rules go straight into our method. We allow for the ULEZ, which covers every borough
What site paperwork can you supply?
Each site asks for different documents, so tell us what you need and we will confirm it when we quote.
Do you take on multi-site work?
Yes. Several buildings can share a single quote, with one point of contact.
When can showers be used after new sealant?
Each sealant has a cure time before it should get wet. Phasing is planned with the cure time in mind so facilities are never short.
What sealant do you use in washrooms?
Sanitary silicone with anti-mould additives for most washroom joints. We use neutral-cure versions on stone, some metals and near mirrors.
What do you charge?
It depends on the job: the volume of work, the access, the specified product and how it’s phased. Call for a quote and we’ll price it properly.
Washroom sealing for commercial buildings in Colindale
Closing all the facilities in a building isn’t an option. 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’ll plan around them. Site teams most often ask us about mould spotting along silicone joints and discoloured joints around urinals and WC pans, on accessible toilets and changing rooms, vanity units and basins and kitchens and tea points. Facilities teams, main contractors and managing agents in Colindale tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.
In Colindale, as across London, commercial kitchens and washrooms need sealed joints that can be cleaned properly. Hygienic and anti-mould sanitary sealants are used where they suit, with food-safe products where food contact is possible.
Guaranteed is the last step of every job. Our workmanship is backed for 12 months, and we explain exactly what that covers when we quote.
- Where
- Colindale (NW9, NW4, HA8)
- Region
- Greater London
- Guarantee
- 12 months on our workmanship
- Quotes
- Quoted before any work starts
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Also near Colindale
Also in Colindale
Honest limits
Some faults sit outside our scope, and we say so rather than covering them up:
- Water from plumbing, not from a joint
- Leaks through tanking or membranes below the finishes
- Fittings that move too much to hold a bead
If in doubt, speak to us on 01277 525 020 or email the details over and we will say what we think.
Surfaces we seal
- Kitchens and tea points
- IPS panels and cubicles
- Showers, trays and wet room floors
- Urinals and WCs
- Vanity units and basins
- Accessible toilets and changing rooms
Owners, agents and contractors
When you manage a building on behalf of an owner, you need clear quotes and clear reporting. You get a fixed quote, an agreed scope and a walk round at the end.
Hotels, schools, healthcare sites, offices and retail units come to us directly as well. The work is planned around how the building runs, so guests, pupils, patients or staff are disturbed as little as possible.
On site: what to expect
We begin with a short walk round with whoever looks after the building, agreeing which joints are in scope, where to start and what must stay open. Then we strip out anything that has failed, prepare every joint and seal it. 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.
- Every room is surveyed and the failed joints listed.
- You get a fixed quote with the phasing plan.
- Old sealant is removed completely and the faces cleaned.
- Each joint is cleaned and left dry.
- New anti-mould sealant goes in and is tooled neat.
- Rooms reopen after the cure time.
Getting the site ready
- Send asbestos survey details if the building is pre-2000
- Agree which areas must stay open
- Warn occupants and staff about the work
Get a fixed quote
Quotes are fixed against the scope you send, so you know the figure before anyone is on site. To ask for one, call the office on 01277 525 020 or use the quote form.
Advice
When to call us in Colindale
Occasionally a joint keeps failing because of a problem behind it: loose fixings, a dripping trap or damp in the wall. We look for it before resealing and tell you if another trade is needed.
Any of the following is a good reason to get the joints checked over:
- Black mould inside silicone joints that cleaning can’t shift
- Shower tray joints that have opened up
- Open joints at the base of cubicle panels
- Open joints along basins and vanity units
Colleges such as College of North West London (to the south of Colindale) have toilets, changing rooms and catering kitchens that can be resealed around term dates.
Questions to ask before you book
- Is depth set with backing rod, or bond-breaker tape in shallow joints?
- Proof of insurance
- Their plan for phasing and protecting the area
- Whether their applicators hold CSCS cards
What sets the cost
A fixed quote reflects the actual work. It allows for:
- Travel to remote or island sites
- Removal of failed or old sealant
- The total length or number of joints
- Induction, permit and paperwork requirements
The specified product makes a difference, and so does the preparation, such as cutting out, priming or new backing rod. Access, phasing and site requirements come into it too.
Before you send an enquiry
Whether it’s one area or a whole building, these details speed things up:
- The postcode of the building
- When you need the work done
- How the joints are reached, and at what height
- Approximate linear metres or a joint schedule
Let us know the site, the scope and your timescale, and we’ll put a fixed quote together. The easiest way is to phone 01277 525 020 or send photos by email.
Keeping Colindale washrooms open while we work
There are a good number of hotels within about 2 miles of Colindale. Behind every hotel door there’s a bathroom whose sealant will need renewing sooner or later. We work a handful of rooms at a time, so the hotel keeps letting the rest. Two care or nursing homes sit less than 2 miles from Colindale. Care home wet rooms and en suites are used every day and cleaned hard, which tells on the silicone. Work is agreed with the manager, around residents’ routines.
Toilets at places like Colindale Retail Park (less than half a mile west of Colindale) are cleaned constantly, which is hard on silicone. On a healthcare site such as BMI Hendon Hospital, which lies east of Colindale, washroom work starts with the infection-control team’s sign-off.
Colindale is about 1 mile south-east of Burnt Oak, in Greater London. Across the NW9 postcode area, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. Across Greater London, 764 places are covered, including Colindale. Our London page has more on work in that area, about 9 miles away.
If you need washroom sealing in NW9, NW4 and HA8, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. Buildings on Cecil Road, Booth Road and Ajax Avenue are within our area for washrooms and wet areas. You will find Colindale on or near the A5150, so getting applicators and materials to site is simple. Just outside Colindale, we also work in West Hendon (1 mile south), The Hyde (1 mile south), The Burroughs (1 mile east), Hendon (1 mile south-east) and Kingsbury (1 mile south-west). Nearby towns on our patch include London (9 miles south-east), City of Westminster (7 miles south-east), Marylebone (7 miles south-east), Kensington (7 miles south), St Pancras (7 miles south-east) and Shoreditch (9 miles south-east).
Near you in Colindale
Locally, jobs take us to sites close to Sunny Hill Park, Saracens High School and Kisharon College, among other places. The closest station to Colindale is Hendon station, roughly 1 mile south-east. Well-known places in the area include Edgware Community Hospital (1.3 miles north-west) and Brent Cross Shopping Centre (1.5 miles south-east). For a walk, there’s Darland's Lake and Parliament Hill.
Why deal with it now?
A failed joint behind a basin or along a shower tray lets water run where it shouldn’t. In a commercial building that can mean damaged boards, stained ceilings on the floor below and odours which costs more to fix than a reseal. In Colindale, each extra visit means more notices, permits and disruption, so a proper job first time, with the old sealant fully removed, is worth it.
Quantities, awkward access and phased working all shape the price. Site requirements like inductions and permits play a part as well.
What you get with us
- Workmanship guaranteed for 12 months
- Fixed quotes based on photographs, drawings or a visit
- One contact handling all your sites
- Constructionline member for supplier checks
Take a look at what affects the cost or our accreditations and insurance.