Greater London · England
Remedial Sealant in St Ann's
Removing failed, mouldy or leaking sealant and putting it right for homeowners, landlords and businesses in St Ann's. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- A second bead peeling off the first
- Caulk or the wrong sealant used in a wet area
- A shower that leaks however often it’s resealed
What the job involves on each surface
Windows & doors
Failed frame mastic is often hard, cracked and in several layers. We remove it all and clean back to sound surfaces before backing and resealing.
Leaking trays & enclosures
Where the joints are the problem, every bead is stripped and resealed with anti-fungal sanitary silicone, including the screen profile and tray edges.
Remedial sealant in St Ann's
Some sealant jobs are not a simple reseal, because someone has already had a go. New sealant over old, smeared beads, unsuitable products and hidden mould all have to come out. We work on mouldy bath & shower sealant, failed movement joints and botched or over-sealed joints, and people most often call us about over-sealed joints coming away and beads that never stuck properly.
Much of London’s older housing is Victorian and Edwardian terraces, many of them now split into flats, and bathrooms were often squeezed into small rooms. Small, steamy rooms are where mould gets into sealant and grout fastest, and homes in St Ann's are no different.
You’re covered for a year from the day we finish. If anything is not right with it, phone 0345 464 0079 or drop us an email.
- Where
- St Ann's (N15, N4, N16)
- Wider area
- Greater London
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Nearby places to St Ann's
Also in St Ann's
Why act early in St Ann's
Adding more sealant is the usual quick fix, and it rarely works. It does not grip the old layer, so the leak carries on and there’s now more to remove. 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 St Ann's.
What it costs depends on the amount of work, how much old material has to come out and access to the work. We give a clear quote before any work starts.
Why choose Mr Mastic in St Ann's
- A choice of colours where the product allows
- Homes, businesses and hotels
- Colour picked to suit the job
- Quality sealants from Arbo and Everbuild
Take a look at our cost guide and what customers say.
For landlords and businesses
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
For anyone letting property in or around St Ann's, jobs at different addresses can go on one quote. Send us the addresses and the work at each, and photos by email help.
The process
We work through the job in order: protection first, then preparation, sealing and a tidy-up. Typically it takes a few hours for most joints, depending on how much old sealant has to come out, and the area is left clean. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in St Ann's. It helps if you can point us to a visitor permit or a bay close to the door.
- First we work out whether the problem is the sealant, movement or a leak.
- Old beads and residue are removed down to clean surfaces.
- Mould is treated and the joint dried.
- We reseal with a product suited to the joint, backed where needed.
- The joint is tooled and you are told about anything else we found.
Before we arrive
- Tell us about any water getting in
- Let us know about stairs, lifts or work at height
- Clear the area around the work
Ask for a quote
Every job is quoted individually. Just phone 0345 464 0079 or drop us an email with the details.
Advice
Your questions about remedial sealant in St Ann's
I let a flat near Seven Sisters station. Can you help?
Yes, landlords and agents are among the people we work for. Just call 0345 464 0079 or send us an email with the address and what needs doing, and we will give you a clear quote.
Can worn sealant in a flat in St Ann's cause a leak downstairs?
It can, yes: water that gets past a split bead or cracked grout often runs under the tray and shows on the ceiling below. Replacing the sealant and grout before that happens is much less trouble than repairing a neighbour’s ceiling.
Can I do it myself?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. If it doesn’t work out, we can redo it.
How long does the work take?
A little longer than a standard reseal. Most jobs take a few hours, and we confirm the time with your quote.
How long should I leave it?
That depends on the sealant used, so please follow the time we give you.
Can you quote for more than one area?
Yes. Just list everything you need.
Is there any odour?
Some sealants have a smell while they cure, but it fades. Opening a window helps.
Can old silicone be taken off without scratching the tiles?
Yes, with care. We cut and lift the old sealant with tools suited to the surface, then clean off the residue. Any existing damage is pointed out before we start.
Quotes for remedial sealant in St Ann's
The quote reflects the job in front of us. We take into account:
- The size of the job
- When we can work, for business premises
- The product the joint needs
- How many rooms, windows or areas are involved
A failed joint rarely gets cheaper to fix by waiting. If you are unsure, ring 0345 464 0079 or email us and we’ll give you an honest view and a quote.
Asking for a quote
There’s no need for technical detail. Just tell us:
- Whether it has been sealed before
- Access, such as stairs, a lift or height
- The address or postcode of the job
- Roughly how big the job is
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. Whenever you are ready, call 0345 464 0079 or send us an email.
What we can’t put right
We will always be straight with you, so here’s what new sealant will not do:
- Plumbing leaks behind walls or under trays
- Sealant in an older building that needs testing for asbestos first
- Water damage behind tiles that needs a tiler
If you are not sure, just call 0345 464 0079 or email us and we’ll give you a straight answer before booking.
Where we work in St Ann's
- Leaking tray & enclosure joints
- Expansion joints
- Failed movement joints
- Botched or over-sealed joints
- Shrunken worktop sealant
- Mouldy bath & shower sealant
St Ann's homes and their sealant
London has hard water, which leaves limescale on sealant, grout and taps. London has a lot of flats and conversions, and a failed shower or bath seal in one can show up on the ceiling below, which is why it’s worth fixing early.
For an older house near a landmark such as St Ann's Church, timber floors under older bathrooms flex, so joints need a sealant that moves with them. As a London address, St Ann's can be tricky for parking: let us know about parking bays, permits or a driveway. If you let a flat or house near Seven Sisters station, a joint that keeps failing is best fixed properly while the property is empty.
St Ann's is about 2 miles north-west of West Hackney, in Greater London. Across the N15 area, we cover remedial sealant for homes and businesses. St Ann's is one of 764 towns and villages in Greater London we cover. You can also see our page for London, roughly 6 miles from St Ann's.
We work across N15, N4 and N16 for remedial sealant. Whether your property is on Ida Road, Elmar Road and Grove Road or a nearby road, our applicators can take on the job. We also cover the places around St Ann's: West Green (1 mile north-west), Seven Sisters (1 mile east), South Tottenham (1 mile east), Harringay (1 mile west) and Tottenham Green (1 mile north-east). Further out, we also cover London (6 miles south), City of Westminster (5 miles south-west), Marylebone (5 miles south-west), Kensington (8 miles south-west), St Pancras (4 miles south) and Shoreditch (4 miles south).
Local landmarks in St Ann's
Locally, jobs take us to homes and businesses close to Church of St Andrew, No.8 Seven Sisters pub and Moselle Upper School and the streets around them. Other local landmarks include Chestnuts Park (under half a mile west) and Park View School (0.5 miles north-west). There’s a railway station in St Ann's itself: Seven Sisters station. A little further out are City of London Maternity Hospital (1.7 miles south-west) and The Mall Wood Green (1.4 miles north-west). The countryside around St Ann's includes Railway Fields and Hollow Pond.
Aftercare tips
After the cure time, these simple habits help:
- Keep bleach and abrasives off the bead
- Always have old sealant cut out, not covered
- Look for stains below bathrooms now and then
- Keep movement joints clear of mortar and paint
Where we have pointed out another fault, have it put right, because the new sealant cannot hold back a problem underneath.
Mould under a second layer of sealant keeps growing out of sight. By the time it shows through, the joint is well past saving.