Greater London · England
Remedial Sealant in Lisson Grove
Removing failed, mouldy or leaking sealant and putting it right for homeowners, landlords and businesses in Lisson Grove. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Sealant applied over old sealant that has lifted
- Worktop sealant that has shrunk and split
- Floor or wall movement joints that have failed
About our remedial sealant in Lisson Grove
Getting old sealant out properly is slow, careful work. Every layer is cut out, the residue cleaned off and the joint degreased, taking care not to scratch the surfaces around it. New sealant only bonds to a clean, dry joint. If you are dealing with products that weren’t meant for the joint and leaks that keep coming back after resealing, we can help, on leaking tray & enclosure joints, expansion joints and mouldy bath & shower sealant alike.
In much of London, period terraces have been converted into flats over the years, and bathrooms were often squeezed into small rooms. Small, steamy rooms are where mould gets into sealant and grout fastest, and homes in Lisson Grove are no different.
A one-year guarantee comes as standard, so you’re not left on your own once the job is done.
- Location
- Lisson Grove (NW8, W1H, W2)
- Region
- Greater London
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
What affects the cost of remedial sealant
Your quote is based on your job. We look at:
- Any working-time requirements on site
- How much there is to do
- Which sealant suits the joint
- Any mould that needs treating
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
What we need to know
When you call or email, it’s useful to know:
- Photos by email, if that’s easy
- The address or postcode of the job
- If it’s domestic, commercial or a hotel
- What the problem is, such as mould, gaps, leaks or cracking
We don’t publish a price list, because every job is different. Instead, we give you a clear quote for your job. To arrange one, call 0345 464 0079 or drop us an email.
What we do, step by step
We work through the job in order: protect, prepare, seal, tidy. Typically it takes a few hours for most joints, depending on how much old sealant has to come out, and the area is left clean. For a job in Lisson Grove, parking and access are the things to plan: tell us about permits, visitor bays or off-street space, which floor we are working on and whether there’s a lift.
- First we work out whether the problem is the sealant, movement or a leak.
- Old beads and residue are removed down to clean surfaces.
- We treat any mould and dry the joint thoroughly.
- We reseal with a product suited to the joint, backed where needed.
- The joint is tooled and you’re told about anything else we found.
How to prepare
- Mention if the joints have been sealed before
- For business premises, tell us about site rules or sign-in
- Try not to wet indoor joints just before the visit
How to get a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and add pictures by email if you can.
Related advice
How the job changes by surface
Leaking trays & enclosures
Where the joints are the problem, every bead is stripped and resealed with anti-fungal sanitary silicone, including the screen profile and tray edges.
Worktops & kitchens
Kitchen joints often have grease and cleaning residue deep in them, so we spend extra time cleaning.
Honest limits
New sealant can’t fix everything, and we’d rather say so up front. Sealant will not put right:
- Older mastics that may need an asbestos check before removal
- A leaking trap, valve or supply pipe
- A cracked shower tray or bath (that needs repair or replacing)
If in doubt, phone 0345 464 0079 or drop us an email and we will say what we think.
What we seal
- Shrunken worktop sealant
- Botched or over-sealed joints
- Leaking tray & enclosure joints
- Expansion joints
- Mouldy bath & shower sealant
- Failed movement joints
How to look after the new joints
Once the sealant has cured, a few habits help it last:
- Air the bathroom so the sealant can dry
- Don’t wait for a small gap to become a leak
- Ask why a joint failed before redoing it
- Clean sealant with mild products only
Ventilation keeps mould away from the new bead: run the fan during and after showers, or open a window.
Warning signs: peeling layers, mould showing through the bead, leaks after showering or cracks in a movement joint. Each one is worth getting looked at.
Remedial sealant around Lisson Grove
London has a lot of flats and conversions, and a failed shower or bath seal in one can show up on the ceiling below, which is why it’s worth fixing early. There are hotels and other places to stay in and around Lisson Grove. Hotel bathrooms are part of our work as well as homes, and can be done room by room.
If you look after a building such as Gateway Academy, we reseal washrooms and kitchens in schools and businesses as well as homes. For landlords with property near London Marylebone station, failed or mouldy sealant is worth putting right between tenancies, before it turns into a leak. Homes close to St Paul's Community Church include some older properties, and timber floors under older bathrooms flex, so joints need a sealant that moves with them.
Lisson Grove is about 1 mile north-west of City of Westminster, in Greater London. Lisson Grove gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. Lisson Grove is one of 764 towns and villages in Greater London where we work.
We cover every part of NW8, W1H and W2 for remedial sealant and the streets around it. You will find streets such as Hall Road, Park Road and Lodge Road, and we cover them all. Lisson Grove is on the A5 and A40, so it’s easy for us to get to with everything needed for remedial sealant. Other places close to Lisson Grove include Paddington Green (1 mile south-west), Paddington (1 mile south), Little Venice (1 mile south-west), Connaught Village (1 mile south) and St John's Wood (1 mile north). We also work in nearby towns such as London (4 miles south-east), Shoreditch (4 miles east), Walthamstow (8 miles north-east), Hoxton (4 miles east), Whitechapel (4 miles east) and Ruislip (11 miles west).
Around Lisson Grove
In Lisson Grove, that means homes and buildings near RIBA Library, St John's Wood Art School and Regent's Park. There’s a railway station in Lisson Grove itself: London Marylebone station. Well-known places in the area include Montfichet's Tower (3 miles east) and Maida Vale Hospital for Nervous Diseases (0.5 miles west). Green spaces nearby include The Long Water and Greville Place nature reserve.
What happens if it’s left?
Ripping out a bathroom isn’t normally needed. When the fittings are sound, stripping and resealing the joints is often enough. If they’re not, we’ll tell you. In a London flat, a failed joint rarely stays your problem alone: water can reach the neighbours below, and gaps in fire-rated joints affect the whole building.
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or send us an email and we’ll talk you through it.
Why us?
- Sanitary silicone with an anti-fungal additive in wet areas
- Domestic, commercial and hotel work
- 20+ years of sealant experience
- Old sealant always removed completely
Take a look at what affects the cost or our reviews.
Questions from Lisson Grove
Could a tired shower seal in my Lisson Grove flat affect the neighbours below?
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.
Do you work in hotels near Lisson Grove?
Yes. Hotel and guest-house work is part of what we do. Jobs can be programmed room by room, with out-of-hours working possible to arrange.
Do you offer different sealant colours?
Normally, yes. White, clear and grey are common, and other colours are available for many products, and we agree the colour with you before we start.
Do the sealants smell?
Sometimes, a little. It fades as the sealant cures.
Do you cover Lisson Grove?
Yes. We are based in Crawley and work across South East England, London and Scotland, and that includes Lisson Grove.
My shower still leaks after a reseal. Can you sort it?
Yes, usually. First we check whether the leak is the sealant at all, then strip and reseal the joints.
Do you hold any approvals?
Yes. We hold ARBOMaster approved applicator status, and we’re fully insured.
Does someone need to be in?
It depends on the job. Inside work needs someone to give us access, and for outside work we will agree access with you when we book.
DIY versus a professional finish
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so just mention it when you contact us.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.