Greater London · England
Remedial sealant & repairs in New Barnet, Greater London
Removing failed, mouldy or leaking sealant and putting it right for homes and businesses in New Barnet and across Greater London. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Sealant peeling off a dusty or damp surface
- Smears and lumps from a botched reseal
- Movement joints that have split or pulled away
Remedial sealant in New Barnet, 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 send us an email, along with when it was last resealed. If you have decorators’ caulk around a bath or shower and a second bead peeling off the first, we can put it right.
In much of London, period terraces have been converted into flats over the years, and bathrooms were often squeezed into small rooms. A compact bathroom that steams up every day is hard on silicone and grout, and homes in New Barnet are no different.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we’ll put it right.
- Place
- New Barnet (EN5, EN4, N20)
- Region
- Greater London
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What happens on the day
We keep the work tidy and contained to the joints we’re treating. Expect the work to take a few hours for a typical bath or shower, longer where several layers have been applied, and we explain the cure time before we leave. In New Barnet, 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.
- 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’re told about anything else we found.
How to prepare
- Try not to wet indoor joints just before the visit
- Keep children and pets away from the work area
- Mention any sign-in or site rules at work premises
Getting a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and email pictures if that is easy.
Read more
Towns and villages near New Barnet
What else we do in New Barnet
Bathrooms and kitchens in New Barnet
London’s water is hard, so limescale builds up on sealant, grout and fittings, and it has to be cleaned off before new sealant goes in. New Barnet has hotels and guest accommodation nearby. As well as homes, we work in hotel bathrooms, where resealing and regrouting can be done room by room.
Letting a property close to New Barnet station? Then a joint that keeps failing is best fixed properly while the property is empty. Schools such as St Mary's CofE Primary School are buildings too, and we reseal washrooms and kitchens in schools and businesses as well as homes.
New Barnet is about 1 mile east of Barnet, in Greater London. Jobs in New Barnet get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. New Barnet is one of 764 towns and villages in Greater London we cover. London is on our list too, around 11 miles away.
All of EN5, EN4 and N20 is within our area for remedial sealant. We cover properties on York Road, Park Road and Henry Road. Other places close to New Barnet include Barnet (1 mile west), Cockfosters (1 mile north-east), East Barnet (1 mile south-east), Underhill (1 mile west) and Whetstone (1 mile south). We also work in nearby towns such as London (11 miles south), City of Westminster (9 miles south), Marylebone (9 miles south), Kensington (10 miles south), St Pancras (8 miles south) and Shoreditch (9 miles south-east).
Around New Barnet
Typical jobs here are in homes near Trent School Cockfosters, East Barnet School and The Alexandra pub and the streets around them. There’s a railway station in New Barnet itself: New Barnet station. Well-known places in the area include Spires Shopping Centre (1.6 miles north-west) and Francis Skaryna Belarusian Library and Museum (2 miles south). Not far away are Greenhill Gardens and Darland's Lake.
Aftercare tips
No joint lasts for ever, but care makes a real difference. A few tips:
- Air the bathroom so the sealant can dry
- Have loose fittings fixed before resealing
- Act on a lifting corner straight away
- Ask why a joint failed before redoing it
If we have found a cause, such as a loose tray or a leaking waste, get it fixed, because the new sealant can’t 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.
When to call us in New Barnet
Some joints fail because water is reaching them from behind. A leaking valve, a failed waste or cracked grout feeds water behind the bead, so the silicone goes mouldy or lets go.
Keep an eye out for any of the following:
- Beads that never stuck properly
- Smears and lumps from a botched reseal
- Sealant applied over old sealant that has lifted
- Products that weren’t meant for the joint
As a London address, New Barnet can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Before you book anyone
- When the joint can take water or movement
- The length of the guarantee
- Whether the sealant suits the joint
- What preparation is included
Different surfaces, different methods
Leaking trays & enclosures
A shower that leaks after resealing often has a tray that moves or an enclosure sealed on the wrong side. We check both before we reseal.
Over-sealed & botched joints
Every layer has to come out, and silicone residue is cleaned off the tiles too. Only a clean joint will take a new bead.
Should I try it myself first?
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
For landlords and businesses
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
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.
New Barnet questions
Can parking be tricky for a visit in New Barnet?
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.
Can you help a landlord with a rental near New Barnet station?
Yes. We work for landlords and letting agents as well as householders, and several properties can be quoted together. Just phone 0345 464 0079 or email us with the address and what needs doing, and we will give you a clear quote.
Will you leave a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We will tell you what we are using and why.
What if the leak is not the sealant?
Then we explain what we’ve found. A plumber or fitter may be needed.
Do you offer different sealant colours?
Yes. Sealants come in white, clear, grey and other colours, and we agree the colour with you before we start.
What do you need from me for a quote?
Where the job is, what the problem is and roughly how big it is. If you can, email a few photos.
Do you guarantee remedial jobs?
Yes. You get our 12-month guarantee, and we’re ARBOMaster approved.
How we quote for remedial sealant
Some jobs are bigger than they look, and some smaller. What affects the quote:
- Working hours on commercial sites
- The type of sealant required
- How many areas need sealing
- The number and length of the joints
The cost depends on the size of the job, how much old material has to come out and access to the work. We give a clear quote before work begins.
Helping us quote
There’s no need for technical detail. Just tell us:
- Photos by email, if that’s easy
- The rough size of the job
- Any previous sealing or DIY work
- Access, such as stairs, a lift or height
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. Whenever you’re ready, ring 0345 464 0079 or send us an email.