Greater London · England
Kenton Remedial Sealant
Removing failed, mouldy or leaking sealant and putting it right for homes and businesses in Kenton and across Greater London. Fully insured, ARBOMaster approved and guaranteed for a year.
- Smears and lumps from a botched reseal
- Worktop sealant that has shrunk and split
- Torn expansion joints
Keeping the joints in good condition
Joint life depends on how it’s used and looked after. We suggest:
- Act on a lifting corner straight away
- Never seal over old silicone
- Report a tray that rocks or a worktop that lifts
- Ask why a joint failed before redoing it
Leave the new joint to cure fully before it gets wet or moves: follow the cure time we give you.
Warning signs: sealant lifting at the ends, a second bead visible on top of the first, black mould under the silicone, or stains below a bathroom. Any of them means it’s time for remedial work.
About our remedial sealant in Kenton
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. New sealant only bonds to a clean, dry joint. We are often asked to deal with worktop sealant that has shrunk and split and wide, uneven beads that look worse than the old ones, on expansion joints, failed movement joints and leaking tray & enclosure joints.
Hard London water leaves limescale on sealant, grout and taps alike. For a bathroom or kitchen in Kenton, getting the joints right keeps water where it belongs and the room looking clean.
Your job is guaranteed for a year, as with all our work.
- Location
- Kenton (HA3, HA7, HA1)
- Wider area
- Greater London
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Also near Kenton
More services for Kenton
When to call us in Kenton
Silicone only bonds to surfaces that are clean and dry. Residue, moisture or dust left in the joint weaken the bond, and the joint starts to come away early.
Signs it’s time to call us include:
- Leaks that keep coming back after resealing
- Sealant applied over old sealant that has lifted
- Wide, uneven beads that look worse than the old ones
- Black mould underneath the bead
Rented homes near Kenton station change hands often, and botched sealant from a previous quick fix is easier to strip out between tenants.
What to look for in a quote
- What the quote includes, VAT included or not
- The length of the guarantee
- What product goes in the joint
- Is the old sealant removed completely?
What we cannot put right
We will not take on work that will not last, so these are the limits:
- Leaks from a shower valve, waste or pipework (a plumber’s job)
- A bath, tray or worktop that moves until it’s properly fixed
- Older mastics that may need an asbestos check before removal
If in doubt, call 0345 464 0079 or drop us an email and we will say what we think.
Where we work in Kenton
- Mouldy bath & shower sealant
- Failed movement joints
- Shrunken worktop sealant
- Expansion joints
- Leaking tray & enclosure joints
- Botched or over-sealed joints
What the job involves on each surface
Mouldy bath & shower sealant
Where mould keeps coming back, ventilation is usually part of the cause. Along with resealing, we’ll mention if the room needs better ventilation.
Windows & doors
Wrong-coloured or messy mastic can be replaced for appearance too, in a colour that suits the frame.
Kenton questions
Could a tired shower seal in my Kenton flat affect the neighbours below?
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.
Do you work for landlords with property near Kenton station?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear quote.
How much does remedial sealant cost in Kenton?
We do not publish prices, because the cost depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Can failed expansion joints be resealed?
Yes. If a joint has been filled with mortar or rigid filler, we rake it out where possible, then the joint is sealed properly.
Is it worth trying it myself?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.
How long before the joint can be used?
Many sealants skin over quickly but take longer to cure fully. We will give you the cure time for the product we used.
Do you work for hotels and businesses?
Yes. Larger jobs can be planned room by room or area by area to suit the site.
Can you match the sealant colour?
Yes. Sealants come in white, clear, grey and other colours, and we agree the colour with you before work begins.
What we do, step by step
On the day, there’s very little for you to do. Show us the job and we’ll take it from there. The job generally takes a few hours, depending on how many layers have to come out. 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.
- 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.
- Mould is treated and the joint dried.
- The right product goes in, with backing where the joint moves.
- The joint is tooled and you are told about anything else we found.
Preparing for the visit
- Mention any leaks or damp you’ve noticed
- Let us know about earlier repairs to the joints
- Plan for the work area to be out of bounds to pets and children
Get a quote
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. Photos by email help us understand the job.
Related advice
Landlord and commercial work in Kenton
We also work for property managers and facilities teams in Kenton and across Greater London. Several sites can go on one quote.
Landlords and letting agents in Kenton can book us as well as householders. Sealant work between tenants keeps a property looking cared for before the next move-in.
What affects the quote in Kenton
You’ll get a clear quote before work begins. It takes into account:
- The number of rooms or windows
- Access and height
- The product the joint needs
- The size of the job
Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
Asking for a quote
You don’t need to know the technical terms. It helps if you can tell us:
- How many joints, rooms or windows are involved
- The problem you’ve noticed
- The address or postcode of the job
- If it’s domestic, commercial or a hotel
For a quote, call 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. We’ll give you a clear price before any work starts.
Bathrooms and kitchens in Kenton
London’s water is hard, 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, so tired sealant is best dealt with early.
Managing a site like St Gregory's Catholic Science College? Then we reseal washrooms and kitchens in schools and businesses as well as homes. As a London address, Kenton can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Kenton is about 2 miles south of Stanmore, in Greater London. If you need remedial sealant in Kenton, please ring 0345 464 0079 or email us for a quick quote. We cover Greater London from our Crawley base, Kenton included. We cover 764 towns and villages across Greater London, from the larger towns to small villages. London is on our list too, about 11 miles from Kenton.
Every address in HA3, HA7 and HA1 is covered for remedial sealant, from the main roads to the quietest streets. If you need remedial sealant at a property on Retreat Close, Kenton Road and Woodgrange Avenue or anywhere close by, our applicators can take on the job. Being close to the A4006, Kenton is easy for our applicators to reach. If you’re just outside Kenton, we cover South Kenton (1 mile south), Northwick Park (1 mile south-west), Greenhill (1 mile west), Wealdstone (1 mile north-west) and Harrow on the Hill (2 miles south-west). Within a short drive, we also cover London (11 miles south-east), City of Westminster (8 miles south-east), Marylebone (8 miles south-east), Kensington (7 miles south-east), St Pancras (9 miles south-east) and Shoreditch (11 miles south-east).
Local landmarks in Kenton
We work in homes and buildings around Uxendon Manor Primary School, The New Moon pub and Preston Park. For rail, the closest station is Kenton station, about 0.5 miles south-west. Nearby you will also find St. Anns (1.3 miles west) and Hilfield Castle (4.9 miles north). Not far away are Masons Field and Northala Fields.