Greater London · England
Remedial sealant & repairs in Fortis Green, Greater London
Professional remedial sealant in and around Fortis Green, with every bit of old sealant taken out first and a 12-month guarantee.
- Beads that never stuck properly
- Decorators’ caulk around a bath or shower
- Torn expansion joints
Remedial sealant in Fortis Green, done properly
Removing failed sealant is the hardest part of the job. We cut out every layer, clear the residue and degrease the surfaces, without scratching tiles, trays or frames. Only then can new sealant bond. Typical jobs include a shower that leaks however often it’s resealed and wide, uneven beads that look worse than the old ones, on shrunken worktop sealant, failed movement joints and botched or over-sealed 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.
Big or small, you get the same one-year guarantee.
- Location
- Fortis Green (N10, N2, N6)
- Region
- Greater London
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
How to look after the new joints
Good habits help new joints last longer. Our tips:
- Don’t add new sealant on top of old
- Do not wait for a small gap to become a leak
- Look for stains below bathrooms now and then
- Keep the room well ventilated
Give the new sealant its full cure time: normally around 24 hours, or as long as we advise.
A split movement joint lets rain into walls and floors, and left long enough, the edges of the joint can crumble. A joint with sound edges is far easier to reseal.
DIY sealant or a professional job?
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so just mention it when you contact us.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.
Leave it or put it right?
Leaks that are left keep doing damage out of sight: wet floors, stained ceilings and swollen worktops. Dealing with the joint now is a small job by comparison. Converted houses in London often have a bathroom above someone else’s living room, and a slow leak from a failed seal can end up in the flat below. Putting it right early is much less trouble for homes in Fortis Green.
The cost reflects the work involved, not a rough estimate. That’s why we ask about the job first and agree the price before starting.
Why Fortis Green customers choose us
- Neat joints and a tidy finish
- Colour agreed with you before work begins
- Approved under the ARBOMaster scheme
- 12-month guarantee on every job
See how sealant jobs are priced and our reviews.
What we do, step by step
Once we are on site, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. After that, the work takes a few hours, depending on how many layers have to come out. In Fortis Green, flats, stairs and shared entrances are part of the routine. Mention any building rules, key holders or managing agents when you book.
- The failure is looked at first, so we know whether it’s sealant, movement or water from elsewhere.
- Old beads and residue are removed down to clean surfaces.
- We treat any mould and dry the joint thoroughly.
- We reseal with a product suited to the joint, backed where needed.
- We finish neatly and point out anything that needs another trade.
Getting ready for the visit
- Keep pets and children clear of the area while we work
- Tell us about any water getting in
- On commercial sites, let us know about site rules
How to get a quote
Call for a quick quote, or email us if that is easier. Describe what needs sealing and we will explain what’s involved.
Advice
Places near Fortis Green
More services for Fortis Green
Surface by surface
Movement & expansion joints
Some movement joints have been filled with mortar or grout. Where it can be raked out, we replace it with flexible sealant.
Mouldy bath & shower sealant
Mould often spreads under the bead as well as through it. Once it’s all removed, the joint is treated.
What we are called out for in Fortis Green
Joints that move need sealant that can stretch. A bath that flexes, a tray that rocks or a building joint that opens and closes will split a rigid or thin bead.
These are the problems we’re asked about most:
- Smears and lumps from a botched reseal
- Mould trapped under a layer of silicone
- Torn expansion joints
- A second bead peeling off the first
For landlords with property near Alexandra Palace station, a joint that keeps failing is best fixed properly while the property is empty.
Questions to ask before you book
- What the quote includes, VAT included or not
- How long the guarantee is
- Whether the sealant suits the joint
- Whether they’re fully insured
Fortis Green questions
Could a tired shower seal in my Fortis Green flat affect the neighbours 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.
Is parking an issue for remedial sealant in Fortis Green?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. That way the visit can be planned around it.
Can landlords and businesses book you?
Yes. As well as homeowners, we work for landlords, agents, businesses and hotels across Greater London.
Can failed expansion joints be resealed?
Yes. Failed movement joints are cut out and resealed with backing and a flexible sealant suited to the movement.
Do you remove the old sealant?
Always. Sealing over old sealant is the main reason resealing fails early, so we never do it.
How long before the joint can be used?
That depends on the sealant used, so please follow the time we give you.
What should I tell you?
A short description and the location, with photos by email if possible. If we need more, we will ask.
Do you come to Fortis Green?
Yes. We cover Fortis Green, as part of our work across South East England, London and Scotland. To book, ring 0345 464 0079 or send us an email.
For landlords and businesses
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we will give you a quote.
Bathrooms and kitchens in Fortis Green
London has hard water, so limescale builds up on sealant, grout and fittings. In a London flat, water from a failed bath or shower seal can reach the neighbours below, which is why it’s worth fixing early.
If you look after a building such as Fortismere School, we reseal washrooms and kitchens in schools and businesses as well as homes. Homes close to United Reformed Church include some older properties, and bathrooms in older houses have often been refitted more than once, with sealant laid over sealant.
Fortis Green is about 1 mile south-east of Finchley, in Greater London. Jobs in Fortis Green get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Our Greater London coverage runs to 764 places, Fortis Green among them. London is on our list too, about 7 miles from Fortis Green.
Jobs for remedial sealant in N10, N2 and N6 works the same way as everywhere else we cover. If you need remedial sealant at a property on Hill Road, Durham Road and Steeds Road or a nearby road, our applicators can take on the job. Being close to the A504, Fortis Green is simple for us to get to for remedial sealant. Other places close to Fortis Green include Muswell Hill (1 mile east), East Finchley (1 mile west), Highgate (1 mile south), Crouch End (1 mile south-east) and Hampstead Garden Suburb (2 miles south-west). Further out, we also cover London (7 miles south), City of Westminster (5 miles south), Marylebone (5 miles south), Kensington (7 miles south), St Pancras (5 miles south) and Shoreditch (6 miles south-east).
What’s near Fortis Green
Around Fortis Green, our work takes us to homes and buildings near Tollington School, Cherry Tree Wood and The Clissold Arms, among other places. The nearest railway station is Alexandra Palace station, about 1.4 miles east of the centre. Well-known places in the area include Kenwood House (1.6 miles south-west) and Grand Arcade (1.8 miles north-west). Open spaces near Fortis Green include Highgate Hill and Glebelands Local Nature Reserve.