Greater London · England
Remedial Sealant in Northfields
Removing failed, mouldy or leaking sealant and putting it right for homeowners, landlords and businesses in Northfields. Fully insured, ARBOMaster approved and guaranteed for a year.
- Products that weren’t meant for the joint
- Sealant applied over old sealant that has lifted
- Floor or wall movement joints that have failed
How we handle remedial sealant in Northfields
If a joint fails again and again, something is causing it. A tray that moves, a worktop that isn’t fixed, the wrong sealant or water getting in elsewhere will beat any new bead. Finding that cause comes before any new sealant. We are often asked to deal with over-sealed joints coming away and black mould underneath the bead, across shrunken worktop sealant, mouldy bath & shower sealant and botched or over-sealed joints.
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. A compact bathroom that steams up every day is hard on silicone and grout.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Location
- Northfields (W5, W13, TW8)
- Region
- Greater London
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Landlord and commercial work in Northfields
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. We can quote for more than one property at once.
Hotels need rooms back in use, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.
How to look after the new joints
A little care helps the new joints last. We recommend:
- Look for stains below bathrooms now and then
- Keep the room well ventilated
- Never seal over old silicone
- Use a soft cloth, not a scourer, on silicone
Keep the room ventilated: use the extractor or open a window after showering.
A failing joint rarely gets better on its own. Every shower or downpour sends more water through, into floors, walls or ceilings. Sorting it early limits the damage.
Remedial sealant around Northfields
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. London has hard water, which leaves limescale on sealant, grout and taps.
Schools such as Mount Carmel Catholic Primary School are buildings too, and its toilets, changing areas and kitchens need their sealant renewed like any other building’s. If you let a flat or house near Brentford station, failed or mouldy sealant is worth putting right between tenancies, before it turns into a leak.
Northfields is about 1 mile south of Ealing, in Greater London. Anywhere in W5, we can carry out remedial sealant at your property. Northfields is one of 764 towns and villages in Greater London where we work for remedial sealant. London is on our list too, around 9 miles away.
Every address in W5, W13 and TW8 is within our area for remedial sealant, from the main roads to the quietest streets. Remedial sealant is available to properties on Burns Road, South Road and Elers Road and the roads around them. Being close to the A3002, Northfields is simple for us to get to. Close by, we work in Brentford (1 mile south-east), Gillette Corner (1 mile south-west), Brentford End (1 mile south), Osterley (2 miles south-west) and Spring Grove (2 miles south-west). We also work in nearby towns such as London (9 miles east), City of Westminster (7 miles east), Marylebone (7 miles east), Kensington (5 miles east), St Pancras (9 miles east) and Shoreditch (10 miles east).
Local landmarks in Northfields
Around Northfields, our work takes us to homes and buildings near Ealing Fields High School, Great Ealing School and Ealing Park Tavern. You will also find Library for Iranian Studies (1.8 miles east) and Lammas Park (under half a mile north). The nearest railway station is Brentford station, about 0.8 miles south of the centre. A little further out are Gunnersbury Park House - Large Mansion (1.2 miles east) and Treaty Centre (3 miles south-west). The countryside around Northfields includes Middle Lake and Long Wood.
What happens if it’s left?
Another bead over the top will not fix a failed joint. It does not grip the old layer, leaving the leak in place and one more layer to cut out later. Damp from a failed joint spreads quietly in older London brickwork and timber, and once it shows in Northfields, the repair is bigger than a sealant job.
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all make a difference, and we’ll explain the quote if you ask.
Why Northfields customers choose us
- Domestic, commercial and hotel work
- A 12-month guarantee on all work
- We agree the colour with you first
- Old sealant always removed completely
Take a look at how sealant jobs are priced and our reviews.
Do you need remedial sealant in Northfields?
One of the commonest remedial jobs is sealant on top of sealant. Silicone doesn’t bond to silicone, so the new layer peels, and damp and mould settle between them.
Signs it’s time to call us include:
- Black mould underneath the bead
- Kitchen joints letting water behind the worktop
- Caulk or the wrong sealant used in a wet area
- Wide, uneven beads that look worse than the old ones
Northfields is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
What to look for in a quote
- What the cure time is
- Which colour the sealant will be
- Who turns up on the day
- What preparation is included
What sealant work cannot fix
We will always be straight with you, so here’s what sealant can’t fix:
- A cracked shower tray or bath (that needs repair or replacing)
- A tray or worktop that needs refixing first
- Tiles that have come away from the wall
Not sure which it is? You can call 0345 464 0079 or drop us an email and we will tell you honestly before booking.
Where we work in Northfields
- Botched or over-sealed joints
- Shrunken worktop sealant
- Leaking tray & enclosure joints
- Mouldy bath & shower sealant
- Failed movement joints
- Expansion joints
Also near Northfields
More services for Northfields
Questions from Northfields
Is parking an issue for remedial sealant in Northfields?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. That way the visit can be planned around it.
I let a flat near Brentford station. Can you help?
Yes, we work for landlords and agents. Just call 0345 464 0079 or drop us an email and tell us about the property, and we’ll give you a clear quote.
Can I do it myself?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
How long will it take to strip and reseal the joint?
Allow a few hours for a typical bath or shower, longer where several layers have been applied. We will give you a timescale when we quote.
How long before the joint can be used?
It depends on the product and the conditions. We tell you how long to leave it before we go.
Can you strip sealant from an acrylic tray safely?
Yes. Careful removal is most of a remedial job, especially on acrylic, enamel and uPVC.
What does remedial sealant cost?
It depends on the job, so we quote each one individually. To get one, ring 0345 464 0079 or drop us an email with a short description of the job.
Do I need to be at home?
That depends on where the joints are. For work indoors, someone needs to let us in.
How it works
A visit follows a simple pattern: we look at the joints together, protect the area around them, carry out the job and tidy away. It generally takes a few hours for most joints, depending on how much old sealant has to come out. In Northfields, as in most of London, parking needs a little planning. It helps if you can point us to a visitor permit or a bay close to the door.
- Surrounding tiles, trays and frames are protected first.
- Every layer of failed sealant is stripped out.
- We clean and degrease the joint and look for signs of movement or water.
- New sealant goes in once the joint is dry, and is tooled smooth.
- You get the cure time and our view on why the joint failed.
Before we arrive
- Clear items away from the joints we are working on
- Mention any tricky access
- Try not to wet indoor joints just before the visit
How to get a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll explain how we’d tackle it. Whenever you’re ready, ring 0345 464 0079 or drop us an email.
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DIY sealant or a professional job?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.