Greater London · England
St Luke's Commercial Sealant
Washrooms, bathrooms and kitchens in St Luke's need attention? We remove the old material, prepare the joints and seal them properly.
- Failed floor-level joints in accessible wet rooms
- Tired sealant ahead of a health and safety audit
- Silicone laid over old silicone by a previous contractor
What we do, step by step
Good joint work is mostly preparation, so that is where we spend the time. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours per area, with larger sites planned over several visits. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. If the building has a concierge, managing agent or access rules, tell us when you book.
- We start by looking at the rooms and agreeing what’s needed.
- We agree when we’ll work, with early or out-of-hours slots where they can be arranged.
- Each area is protected and stripped of old sealant.
- Joints are dried, then resealed and tooled neatly.
- Housekeeping or site staff are told when each area can be used.
Preparing for the visit
- Let us know if you’ve seen damp or leaks
- Keep children and pets away from the work area
- For indoor joints, keep the area dry beforehand if you can
Ask for a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email pictures if that is easy.
Related advice
Commercial sealant for homes and businesses in St Luke's
Staff facilities can’t be out of action for long. Early starts and out-of-hours work can be arranged to keep disruption down. Each area is handed back with its cure time. We work on student & care accommodation, hotel bathrooms and retail & leisure sites, and common reasons people get in touch are washroom sealant that looks dirty however often it’s cleaned and leaks from showers into rooms or ceilings below.
In London, a commercial job often starts with access: loading bays, building rules and lifts. Timings and access are agreed with the building before work starts in St Luke's, and room-by-room programmes can be planned where needed.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we’ll put it right.
- Place
- St Luke's (N1, EC1V, EC2A)
- Region
- Greater London
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Places near St Luke's
More services for St Luke's
Landlords, agents and businesses in St Luke's
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. We can quote for more than one property at once.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Can I do it myself?
If you’ve already had a go yourself, that is fine. We cut it out and start again.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Honest limits
In fairness, there are a few things sealant won’t fix:
- Failed tanking or loose tiles behind the sealant
- Certifying fire stopping or building compliance
- Water coming from plumbing rather than sealant
If in doubt, phone 0345 464 0079 or send us an email and we will say what we think.
Surfaces we seal
- Student & care accommodation
- Hotel bathrooms
- Retail & leisure sites
- Welfare facilities
- Rental portfolios
- Office washrooms & kitchens
St Luke's questions
Can parking be tricky for a visit in St Luke's?
In much of London, parking needs planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.
Do you work for hotels and guest houses in St Luke's?
Yes. Hotel and guest-house work is part of what we do. Jobs can be programmed room by room, with out-of-hours working possible to arrange.
Do you cover St Luke's?
We do. Our applicators work in St Luke's.
Do you work for landlords and agents?
Yes. We reseal bathrooms and kitchens in rented homes.
Do you hold any approvals?
Yes. We’re approved under the ARBOMaster scheme.
What do you put in the joint?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference, and we will explain our choice.
Do you take out the old sealant first?
Always. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
Do you guarantee your work?
Yes. Every job comes with a 12-month guarantee.
How to look after the new joints
Simple care keeps the joints in good condition. Our advice:
- Check the joints during routine room inspections
- Pass on the cure time to whoever cleans the rooms
- Keep strong chemicals and scourers off the joints
- Leave squeegees in busy showers
Daily cleaning with harsh chemicals shortens the life of any sealant. Ask cleaners to use mild products and soft cloths on the sealant, with stronger products kept off the bead.
In a commercial building, a leak can quickly spread beyond one room: through floors, into ceilings and across into corridors. Dealing with the joint early stops that spread.
Different surfaces, different methods
Hotel bathrooms
We work through hotel rooms in agreed batches, so most rooms stay available. Each room is handed back with its cure time for housekeeping.
Office washrooms & kitchens
Kitchen and tea point joints are degreased and resealed, with a food-safe product beside sinks where needed.
What commercial sealant looks like in St Luke's
London’s water is hard, which leaves limescale on sealant, grout and taps. Many London buildings have tight access and loading restrictions, so out-of-hours working can be arranged where needed.
For site and facilities teams at buildings such as St Luke's CofE Primary School, sealant in washrooms, kitchens and changing areas can be renewed around term times or opening hours. Letting a property close to Old Street station? Then we can quote for one property or a whole portfolio of rentals.
St Luke's is about 2 miles north of London, in Greater London. We carry out commercial sealant for homeowners, landlords and businesses in St Luke's and nearby, as part of our work across Greater London. Our area takes in 764 places across Greater London, from the larger towns to small villages.
Work in N1, EC1V and EC2A is quoted and booked the same way as anywhere else. That includes homes and businesses on Long Lane, City Road and Moor Lane and the roads around them. Being close to the A1 and A501, St Luke's is simple for us to get to for commercial sealant. We also cover Finsbury (1 mile south), Barbican Estate (1 mile south), Shoreditch (1 mile east), Hoxton (1 mile north-east) and City of London (1 mile south). Further out, we also cover City of Westminster (3 miles west), Kensington (5 miles west), Walthamstow (5 miles north-east), Hampstead (4 miles north-west), Ruislip (14 miles west) and Brompton (4 miles south-west).
Local landmarks in St Luke's
Around St Luke's, our work takes us to homes and buildings near Barts Health Archives, Charterhouse Square School and The Masque Haunt pub and the streets around them. Also close by are St Mary-at-Hill (1.1 miles south), Central Foundation Boys' School (under half a mile east) and Artillery Ground (within half a mile south-east). St Luke's has its own railway station: Old Street station. A little further out are Gabriel's Wharf (1.3 miles south-west) and Montfichet's Tower (0.9 miles south-west). Open spaces near St Luke's include St. James's Park Lake and Barnsbury Wood.
Common problems we fix in St Luke's
Heavy use means more movement: different weights, constant use and daily cleaning. If a tray flexes, the sealant around it splits.
Look out for any of the following:
- Black, stained silicone in guest bathrooms
- Tired sealant ahead of a health and safety audit
- Shower leaks reaching the floor below
- Too many rooms to reseal without closing the building
If you look after a church, hall or community building such as Jewin Welsh Presbyterian Chapel, halls and community kitchens see heavy use, and their sealant shows it.
Questions to ask before you book
- What insurance they hold
- Who turns up on the day
- What happens if the job turns out different
- What the cure time is