Greater London · England
Roxeth Remedial Sealant
Removing failed, mouldy or leaking sealant and putting it right for Roxeth, backed by a 12-month guarantee. Ask us for a quote.
- Movement joints that have split or pulled away
- Caulk or the wrong sealant used in a wet area
- Leaks that keep coming back after resealing
How the visit works
Once we’re on site, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. After that, the work takes a few hours, depending on how many layers have to come out. For a job in Roxeth, parking and access are the things to plan: let us know about parking, the floor we’ll be working on and any lift or shared entrance.
- First we find out how and where the joint has failed.
- All the old sealant comes out, including any layers underneath.
- The joint is cleaned, treated for mould and left to dry.
- We use the right backing and sealant for any joint that moves.
- The new joint is tooled neatly and we explain anything else we found.
Getting ready for the visit
- Let us know about earlier repairs to the joints
- Clear the area around the work
- Let us know about parking restrictions
Getting a quote
We do not publish a price list, because every job is different. Instead, we send you a clear quote for your job. To get started, ring 0345 464 0079 or send us an email.
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Remedial sealant in Roxeth
Not every leak is a sealant leak. A cracked tray, a failed shower valve or a leaking waste can look just the same. When the fault is elsewhere, we say so instead of resealing for the sake of it. We’re often asked to deal with sealant that came away because the surface wasn’t prepared and smears and lumps from a botched reseal, across expansion joints, botched or over-sealed joints and failed movement joints.
London homes include a lot of flats, conversions and mansion blocks, and many bathrooms sit right above someone else’s ceiling. In Roxeth, that’s a good reason to put tired sealant and grout right early.
Your job is guaranteed for a year, as with all our work.
- Place
- Roxeth (HA2, HA1, UB5)
- Wider area
- Greater London
- Guarantee
- A year, on every job
- Quote
- A clear price before we start
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Leave it or put it right?
Hidden water does the most damage: soaked floorboards, ceiling stains below and blown plaster. By comparison, sorting the joint is quick. In a flat in Roxeth, failed sealant seldom stays inside your own four walls: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
Why Roxeth clients choose us
- 180+ five-star Google reviews
- A choice of colours where the product allows
- Every job guaranteed for a year
- Domestic, commercial and hotel work
Take a look at what affects the cost and what customers say.
How we quote for remedial sealant
You will get a clear quote before we start. It takes into account:
- How much there is to do
- Any mould that needs treating
- The product the joint needs
- The old material and how stubborn it is
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
What we need to know
Photos by email are helpful but not essential. Try to tell us:
- How we’d reach the joints
- Roughly how big the job is
- Any previous sealing or DIY work
- Photos by email, if that’s easy
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we will talk you through the work.
Bathrooms and kitchens in Roxeth
There are hotels and other places to stay in and around Roxeth. As well as homes, we work in hotel bathrooms, where resealing and regrouting can be done room by room. London’s water is hard, which leaves limescale on sealant, grout and taps, and it has to be cleaned off before new sealant goes in.
Managing a site like Roxeth Primary School? Then we reseal washrooms and kitchens in schools and businesses as well as homes. If you let a flat or house near Sudbury Hill Harrow station, failed or mouldy sealant is worth putting right between tenancies, before it turns into a leak.
Roxeth is about 1 mile south of Harrow, in Greater London. For remedial sealant in and around Roxeth, it’s easy to get a quote: please call 0345 464 0079 or send us an email. We cover Greater London from our Crawley base, Roxeth included. Roxeth is one of 764 towns and villages in Greater London we cover. Our London page covers work nearby.
We cover every part of HA2, HA1 and UB5 for remedial sealant. You’ll find streets such as Lower Road, Grange Road and Dudley Road, all of which we cover. We also cover the places around Roxeth: South Harrow (1 mile south-west), Harrow (1 mile north), Harrow on the Hill (1 mile east), Northwick Park (1 mile north-east) and Rayners Lane (1 mile west). Within a short drive, we also cover London (12 miles south-east), City of Westminster (9 miles south-east), Marylebone (9 miles east), Kensington (8 miles south-east), St Pancras (10 miles east) and Shoreditch (12 miles east).
What’s near Roxeth
Typical jobs here are in homes near The White Horse pub, Orley Farm School and Northwick Park, among other places. The nearest railway station is Sudbury Hill Harrow station, about 0.8 miles south-east of the centre. A little further out are Clementine Churchill Hospital (0.7 miles east) and Kodak Museum (1.7 miles north). Green spaces nearby include Northala Fields and Perivale Wood.
Common problems we fix in Roxeth
Using the wrong product is a common cause: caulk where it gets wet, rigid sealant where things move, or an acetoxy silicone on a surface it can mark. None of them last.
People usually contact us when they notice one of these:
- A second bead peeling off the first
- Thick, messy sealant smeared over tiles
- Worktop sealant that has shrunk and split
- Repeat leaks from the same joint
Roxeth is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Comparing quotes
- How long the guarantee is
- How much experience the applicator has
- What happens if they find a problem under the old sealant
- What product goes in the joint
Work for landlords, hotels and businesses
We also work for property managers and facilities teams. We can quote a run of properties together, and we’re fully insured.
Letting agents often deal with us directly. Tell us the address, the job and how access works and we will quote.
FAQs for Roxeth
Can worn sealant in a flat in Roxeth cause a leak downstairs?
Yes, it can. Water that gets past failed sealant or cracked grout can run under the bath or tray and show up on the ceiling below. Replacing the sealant and grout before that happens is much less trouble than repairing a neighbour’s ceiling.
I let a flat near Sudbury Hill Harrow station. Can you help?
Yes, we work for letting agents and landlords. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we’ll give you a clear quote.
Can you reseal a split movement joint?
Yes. Failed movement joints are cut out and resealed with backing and a flexible sealant suited to the movement.
Should I try DIY first?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs.
Can old silicone be taken off without scratching the tiles?
Yes. We take our time over removal, especially on acrylic, enamel and uPVC.
Where do you work from?
We’re a Crawley-based firm, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Is remedial work guaranteed?
Yes. Remedial work carries the same 12-month guarantee as all our work.
How do I get a quote for remedial sealant in Roxeth?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote and we will talk you through it.
Keeping the joints in good condition
Looking after new joints is easy, and it makes a real difference:
- Always have old sealant cut out, not covered
- Deal with small splits early
- Look for stains below bathrooms now and then
- Keep the room well ventilated
Go easy on the new sealant: a mild cleaner and a soft cloth, with no blades or scourers.
Signs to act on: peeling layers, mould showing through the bead, leaks after showering or cracks in a movement joint. Each one is worth getting looked at.
How the job changes by surface
Mouldy bath & shower sealant
Mould can sit behind the silicone, not just in it. Once it’s all removed, the joint is treated so the new sealant starts clean.
Worktops & kitchens
If a worktop moves when you lean on it, the sealant will keep splitting. That needs refixing before resealing, and we will tell you if we find it.