Greater London · England
Hendon Remedial Sealant
Remedial sealant across Hendon and nearby, with every bit of old sealant taken out first.
- Products that weren’t meant for the joint
- Sealant that came away because the surface wasn’t prepared
- Repeat leaks from the same joint
How we handle remedial sealant in Hendon
Decorators’ caulk in a shower, bathroom silicone on a window, a rigid filler in a movement joint fails however neatly it’s applied. Out it comes, and in goes a sealant suited to the job. If you have mould trapped under a layer of silicone and products that weren’t meant for the joint, we can put it right, whatever the surface.
London homes include a lot of flats, conversions and mansion blocks, so a bathroom is often directly above a neighbour’s ceiling. That makes worn sealant and cracked grout in Hendon more than a cosmetic job.
A one-year guarantee comes as standard.
- Place
- Hendon (NW4, NW9, NW2, NW11)
- Region
- Greater London
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
How to look after the new joints
To keep the joints looking good and working properly:
- Never fill a movement joint with mortar or grout
- Always have old sealant cut out, not covered
- Check ceilings under showers for marks
- Run the fan after every shower
Watch the joint over the first few weeks, especially if movement was the problem. If anything changes, just phone 0345 464 0079 or drop us an email.
Mould trapped under over-sealed joints spreads unseen. When it finally shows, the whole bead needs to come out.
What affects the quote in Hendon
You will get a clear quote before any work starts. It’s based on:
- When we can work, for business premises
- The type of sealant required
- Mould in or behind the old joints
- The old material and how stubborn it is
What you pay reflects the work, not a rough estimate. That is why we ask a few questions first and give you a clear price before work begins.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Any previous sealing or DIY work
- Where the property is
- What the problem is, such as mould, gaps, leaks or cracking
- Access, such as stairs, a lift or height
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. When it suits you, ring 0345 464 0079 or drop us an email.
DIY versus a professional finish
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Work for landlords, hotels and businesses
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
Landlords and letting agents in Hendon can book us as well as householders. Sealant work between tenants keeps a property looking cared for before the next move-in.
How the job changes by surface
Worktops & kitchens
If a worktop moves when you lean on it, the sealant will keep splitting. It needs fixing down first, which we will point out.
Leaking trays & enclosures
Where the joints are the problem, every bead is stripped and resealed with anti-fungal sanitary silicone, tray edges and screen profiles included.
How the visit works
At the end, we look at the finished work together. The visit itself usually takes a few hours for most joints, depending on how much old sealant has to come out, depending on how much there is to do. In a London area like Hendon, the main things to plan are parking and access: tell us about permits, visitor bays or off-street space, which floor we’re working on and whether there’s a lift.
- We protect the surfaces around the joint.
- Every layer of failed sealant is stripped out.
- The joint is degreased and checked for movement and leaks.
- Once dry, a suitable sealant is applied and tooled.
- You get the cure time and our view on why the joint failed.
Before we arrive
- Tell us if parking is tricky
- Mention if the joints have been sealed before
- For business premises, tell us about site rules or sign-in
How to get a quote
For a quote, ring 0345 464 0079 or email us with the location and a short description of the problem. We’ll give you a clear price before any work starts.
Advice
Nearby places to Hendon
More services for Hendon
Common problems we fix in Hendon
Some joints fail because water is reaching them from behind. A leaking valve, a failed waste or cracked grout feeds water behind the bead, and the sealant lifts or goes mouldy from underneath.
If you can see any of these, it’s time to have the joints looked at:
- Smears and lumps from a botched reseal
- Repeat leaks from the same joint
- Black mould underneath the bead
- Worktop sealant that has shrunk and split
As a London address, Hendon can be tricky for parking: let us know about parking bays, permits or a driveway.
Comparing quotes
- Who does the work, and how experienced they are
- How hidden problems are handled
- What guarantee comes with the work
- How the joint is cleaned and prepared
Your questions about remedial sealant in Hendon
Is parking a problem for a job in Hendon?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. That way the visit can be planned around it.
Do you take on hotel work around Hendon?
Yes, hotels and guest houses are among the places we work. Rooms can be done a few at a time, so the building stays open.
Can I do it myself?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs.
What happens if the problem is the tray or the plumbing?
You’ll hear it from us. A cracked tray, faulty valve or leaking waste needs a different trade, and we will not reseal for the sake of it.
Are you fully insured?
Yes. We’re fully insured.
Is there any odour?
It depends on the product. Some smell for a while, some hardly at all, and any smell fades as they cure.
Can you do several jobs on one visit?
Yes. Several rooms, windows or areas can go on one quote.
Does someone need to be in?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Remedial sealant in Hendon: local notes
Hendon has hotels and guest accommodation nearby. Hotel bathrooms are part of our work as well as homes, and can be done room by room. London’s water is hard, so limescale builds up on sealant, grout and fittings.
If you look after a building such as Hendon School, we reseal washrooms and kitchens in schools and businesses as well as homes. Homes close to Christ Church Hendon include some older properties, and timber floors under older bathrooms flex, so joints need a sealant that moves with them.
Hendon is about 3 miles north-west of Hampstead, in Greater London. Jobs in Hendon get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Across Greater London, we cover 764 places, and Hendon is one of them. London is on our list too, around 8 miles away.
Jobs for remedial sealant in NW4, NW9, NW2 and NW11 is quoted and booked the same way as anywhere else. If you need remedial sealant at a property on Church Road, Station Road and Sydney Grove or anywhere close by, our applicators can take on the job. Hendon is on the A5 and A41, which makes it straightforward to reach. Nearby, we also carry out remedial sealant in The Burroughs (1 mile north-west), Brent Cross (1 mile south), Staples Corner (1 mile south), West Hendon (1 mile west) and The Hyde (1 mile west). Further out, we also cover London (8 miles south-east), City of Westminster (6 miles south-east), Marylebone (6 miles south-east), Kensington (6 miles south), St Pancras (6 miles south-east) and Shoreditch (7 miles south-east).
Local landmarks in Hendon
We work in homes and buildings around Hasmonean Primary School, The White Bear pub and Kisharon College and the streets around them. The closest station to Hendon is Hendon station, about 0.7 miles south-west. A little further out are Brent Cross Shopping Centre (0.5 miles south) and St Andrew's Hospital (1.6 miles south). Open spaces near Hendon include Darland's Lake and Parliament Hill.