Greater London · England
West Hampstead Remedial Sealant
Failed sealant joints in West Hampstead need attention? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Products that weren’t meant for the joint
- Sealant applied over old sealant that has lifted
- Dark patches showing through the sealant
How the job changes by surface
Windows & doors
A frame that keeps leaking may not be the mastic. We check the joint and tell you if it looks to be something else.
Movement & expansion joints
Some movement joints have been filled with mortar or grout. We rake that out where it can be removed and seal with a flexible product.
Remedial sealant for homes and businesses in West Hampstead
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. Common call-outs are for gaps opening along the back of the worktop and thick, messy sealant smeared over tiles, across mouldy bath & shower sealant, failed movement joints and botched or over-sealed joints.
London homes include a lot of flats, conversions and mansion blocks, so a bathroom is often directly above a neighbour’s ceiling. In West Hampstead, that is a good reason to put tired sealant and grout right early.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we will put it right.
- Place
- West Hampstead (NW3, NW6, NW2)
- Wider area
- Greater London
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Places near West Hampstead
More services for West Hampstead
Work for landlords, hotels and businesses
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
What sealant work can’t fix
Honest advice matters more to us than a booking, so here’s what new sealant will not do:
- Sealant in an older building that needs testing for asbestos first
- A leaking trap, valve or supply pipe
- Water damage behind tiles that needs a tiler
Not sure which it is? You can call 0345 464 0079 or drop us an email and we’ll tell you honestly.
What we seal
- Expansion joints
- Botched or over-sealed joints
- Leaking tray & enclosure joints
- Shrunken worktop sealant
- Failed movement joints
- Mouldy bath & shower sealant
How we quote for remedial sealant
Every job gets its own quote. These are the things that affect it:
- When we can work, for business premises
- Access and height
- The size of the job
- Mould in or behind the old joints
Combining jobs into one visit generally makes better use of the time than several visits. We’ll give you a clear price for the lot.
What to tell us for a quote
When you call or email, it’s useful to know:
- Photos by email, if that’s easy
- Roughly how big the job is
- The address or postcode of the job
- What the problem is, such as mould, gaps, leaks or cracking
For a quote, ring 0345 464 0079 or drop us an email with the location and a short description of the problem. You will have a clear quote before we start.
FAQs for West Hampstead
Do you take on hotel work around West Hampstead?
Yes, we work for hotels as well as homes and businesses. Rooms can be done a few at a time, so the building stays open.
Can worn sealant in a flat in West Hampstead 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. It’s far simpler to replace tired sealant early than to deal with a neighbour’s ceiling.
Do you take out the old sealant first?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Is there any odour?
That depends on the sealant. Some products have a noticeable smell, others very little.
Do I need to be at home?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
Do you guarantee remedial jobs?
Yes, with our one-year guarantee. Where we’ve flagged another fault, it needs fixing for the joint to last.
How long before the joint can be used?
That depends on the sealant used, so follow the cure time we give you.
Can tenants book the work?
Of course. Check with your landlord; we can send the quote to them too.
The process
You don’t need to clear the whole room or building, just the space around the work. Everything nearby is protected, and the job takes a few hours, depending on how many layers have to come out for a typical job. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in West Hampstead. It helps if you can point us to a visitor permit or a bay close to the door.
- We look at how the sealant has failed and check for movement or a leak path.
- Every layer of old sealant is cut and cleaned out.
- We clean the joint, treat any mould and let it dry.
- We use the right backing and sealant for any joint that moves.
- Finally we finish the joint and talk you through what we found.
Before we arrive
- Mention any sign-in or site rules at work premises
- Where the joints are inside, avoid wetting them before we arrive
- Let us know about earlier repairs to the joints
Get a quote
We quote each job on its own, so start by telling us what you need. Just ring 0345 464 0079 or send us an email with the details.
Read more
Why it’s worth doing now in West Hampstead
Remedial work takes longer than a straight reseal, but not by much: the work takes a few hours, depending on how many layers have to come out. Compared with chasing the same leak every few months, it’s time well spent. Converted houses in London often have a bathroom above someone else’s living room, so a small leak from tired sealant can mean a neighbour’s ceiling and a lot of disruption. Putting it right early is much less trouble for homes in West Hampstead.
What you pay reflects the work, not a rough estimate. That’s why we ask about the job first and give you a clear quote before we start.
What you get with us
- Full insurance on every job
- Anti-fungal silicone where joints get wet
- Rated 4.9 stars on Google
- We never seal over old sealant
Take a look at what affects the cost and what customers say.
West Hampstead homes and their sealant
In a London flat, water from a failed bath or shower seal can reach the neighbours below, so tired sealant is best dealt with early. West Hampstead 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.
Schools such as Emmanuel Church of England Primary School are buildings too, and we reseal washrooms and kitchens in schools and businesses as well as homes. Rented homes near Finchley Road & Frognal station change hands often, and a joint that keeps failing is best fixed properly while the property is empty. As a London address, West Hampstead can be tricky for parking: let us know about parking bays, permits or a driveway.
West Hampstead is about 3 miles north-west of City of Westminster, in Greater London. West Hampstead gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. Our area takes in 764 places across Greater London. You can also see our page for London, roughly 6 miles from West Hampstead.
Postcode districts we cover here for remedial sealant: NW3, NW6 and NW2. Remedial sealant is available to properties on Mill Lane, Acol Road and Ajax Road. West Hampstead sits on or near the A502. Other places close to West Hampstead include Fortune Green (1 mile west), Hampstead (1 mile east), Greenhill (1 mile east), Childs Hill (1 mile north-west) and Vale of Health (1 mile north-east). Further out, we also cover London (6 miles south-east), City of Westminster (3 miles south-east), Marylebone (3 miles south-east), Kensington (4 miles south), St Pancras (4 miles south-east) and Shoreditch (5 miles east).
Around West Hampstead
Typical jobs here are in homes near South Hampstead High School, Holly Bush pub and Kilburn Grange Park. There’s a railway station in West Hampstead itself: Finchley Road & Frognal station. Nearby you’ll also find Isokon Gallery (1.2 miles east) and New End Hospital (0.5 miles north-east). Not far away are Parliament Hill and Westbere Copse.
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Check ceilings under showers for marks
- Keep bleach and abrasives off the bead
- Act on a lifting corner right away
- Keep the room well ventilated
Keep an eye on the joint at first, particularly where the original failure was caused by movement. Should anything change, call 0345 464 0079 or drop us an email.
Movement joints that have split let water into the structure, and left long enough, the edges of the joint can crumble. Resealing while the edges are sound is simpler.