Greater London · England
Remedial Sealant in Hornsey
Removing failed, mouldy or leaking sealant and putting it right for householders, landlords and businesses in Hornsey. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Gaps opening along the back of the worktop
- Torn expansion joints
- Black mould underneath the bead
Remedial sealant in Hornsey, done properly
If a joint has been resealed and is leaking again, it’s worth a proper look. Send pictures when you phone 0345 464 0079 or drop us an email, along with when it was last resealed. We are often asked to deal with a second bead peeling off the first and leaks that keep coming back after resealing, across shrunken worktop sealant, expansion joints and failed movement joints.
Much of London’s older housing is Victorian and Edwardian terraces, many of them now split into flats, with bathrooms fitted into whatever space was available. Small, steamy rooms are where mould gets into sealant and grout fastest.
Your job is guaranteed for a year, as with all our work.
- Place
- Hornsey (N8, N22)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
What we do, step by step
When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. After that, the work takes a few hours for most joints, depending on how much old sealant has to come out. In Hornsey, flats, stairs and shared entrances are part of the routine. If the building has a concierge, managing agent or access rules, tell us when you book.
- We protect the surfaces around the joint.
- Every layer of failed sealant is stripped out.
- The joint is degreased and checked for movement and leaks.
- New sealant goes in once the joint is dry, and is tooled smooth.
- We give you the cure time and explain what caused the failure.
How to prepare
- Try not to wet indoor joints just before the visit
- Mention any sign-in or site rules at work premises
- Mention any parking rules near the property
Getting a quote
There’s no standard price list. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or email us.
Advice
Can I do it myself?
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Common questions in Hornsey
Is parking an issue for remedial sealant in Hornsey?
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.
I live in a flat in Hornsey. Can a failed seal leak into the flat below?
Yes, and the first sign is often a stain on the ceiling below. A proper reseal before the leak starts is the easy fix.
How do I get a quote for remedial sealant in Hornsey?
Size, access and the old material all affect the cost. Call for a quick quote and we’ll talk you through it.
Can you quote for more than one area?
Yes. Tell us about everything you’d like done and you’ll get one quote.
Are you insured?
Yes, we’re fully insured.
What happens if the problem is the tray or the plumbing?
We’ll tell you. A cracked tray, faulty valve or leaking waste needs a different trade, so we will not pretend it will.
I’m a tenant. Can you help?
Of course. Ask your landlord first, and we can send them the quote if that helps.
Can I choose the sealant colour?
Normally, yes. Sealants come in white, clear, grey and other colours for many products, and we’ll agree it with you first.
Common problems we fix in Hornsey
Products get mixed up: caulk where it gets wet, rigid sealant where things move, or an acetoxy silicone on a surface it can mark. None of them last.
The most common problems we see are:
- Repeat leaks from the same joint
- Worktop sealant that has shrunk and split
- Decorators’ caulk around a bath or shower
- Dark patches showing through the sealant
Hornsey is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
What your quote should include
- How the surfaces are prepared before sealing
- What insurance they hold
- Is VAT in the price?
- How the colour is chosen
Places near Hornsey
What else we do in Hornsey
Hornsey homes and their sealant
London has hard water, which leaves limescale on sealant, grout and taps, and it has to be cleaned off before new sealant goes in. There are hotels and other places to stay in and around Hornsey. Hotel bathrooms are part of our work as well as homes, and can be done room by room.
For landlords with property near Hornsey station, failed or mouldy sealant is worth putting right between tenancies, before it turns into a leak. In the older streets around Church of Holy Innocents, bathrooms in older houses have often been refitted more than once, with sealant laid over sealant.
Hornsey is about 3 miles east of Finchley, in Greater London. Our applicators cover remedial sealant for homes and businesses in Hornsey and nearby, as part of our work across Greater London. Our Greater London coverage runs to 764 places, and Hornsey is one of them. You can also see our page for London, roughly 6 miles from Hornsey.
Work in N8 and N22 is quoted and booked the same way as anywhere else. Streets in the area include High Street, Brandon Place and Cross Lane, and we cover them all. We also cover the places around Hornsey: Turnpike Lane (1 mile east), Crouch End (1 mile south-west), Stroud Green (1 mile south-east), Wood Green (1 mile north-east) and Noel Park (1 mile north-east). Larger places within reach include London (6 miles south), City of Westminster (5 miles south), Marylebone (5 miles south), Kensington (7 miles south-west), St Pancras (4 miles south) and Shoreditch (5 miles south).
Local landmarks in Hornsey
In Hornsey, that means homes and buildings near Great Northern Railway pub, Priory Park and Greek Secondary School of London and the streets around them. There’s a railway station in Hornsey itself: Hornsey station. Nearby you will also find Hornsey Central Hospital (0.7 miles west) and Broomfield House Museum (2 miles north). The countryside around Hornsey includes Darland's Lake and Highgate Hill.
For landlords and businesses
Landlords and letting agents in Hornsey can book us as well as homeowners. Resealing between tenancies keeps a property looking cared for.
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
When something else is needed
Some problems need a builder, plumber or other trade rather than us:
- Plumbing leaks behind walls or under trays
- A tray or bath that’s cracked
- Old mastic in a building from before 2000 that should be checked for asbestos before it’s disturbed
If in doubt, call 0345 464 0079 or drop us an email and we will say what we think before booking.
Joints and surfaces we work on
- Shrunken worktop sealant
- Failed movement joints
- Mouldy bath & shower sealant
- Leaking tray & enclosure joints
- Expansion joints
- Botched or over-sealed joints
What affects the quote in Hornsey
Some jobs are bigger than they look, and some smaller. What affects the quote:
- When we can work, for business premises
- Whether the work is at height
- The product the joint needs
- Mould in or behind the old joints
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, along with when we can work on site. Ask us for a quote and we’ll go through it with you.
What to tell us for a quote
You don’t need to know the technical terms. It helps if you can tell us:
- Pictures of the joints, sent by email
- Whether it has been sealed before
- Whether it’s a home or a business
- How we’d reach the joints
For a quick quote, get us on the phone, or email us if that’s easier. Tell us about the joints that need doing and we’ll explain what’s involved.
Keeping the joints in good condition
So the new joints stay in good condition:
- Ask why a joint failed before redoing it
- Act on a lifting corner straight away
- Never seal over old silicone
- Report a tray that rocks or a worktop that lifts
If we’ve found a cause, such as a loose tray or a leaking waste, get it fixed, or the new joint may fail again.
Mould trapped under over-sealed joints spreads unseen. When it finally shows, the whole bead needs to come out.