Greater London · England
Remedial Sealant in The Wrythe
Removing failed, mouldy or leaking sealant and putting it right for homes and businesses in The Wrythe and across Greater London. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Decorators’ caulk around a bath or shower
- Dark patches showing through the sealant
- A shower that leaks however often it’s resealed
Your questions about remedial sealant in The Wrythe
Can you help a landlord with a rental near Carshalton station?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before work begins.
Could a tired shower seal in my The Wrythe flat affect the neighbours below?
Yes. In a flat, water from a failed bath or shower seal has only one way to go, and that’s down. A proper reseal before the leak starts is the easy fix.
Do you work for hotels and businesses?
Yes. We’ve worked for hotels, offices and other businesses, and we’re fully insured.
What happens if the problem is the tray or the plumbing?
We check for that before we reseal. If the fault is elsewhere, you will know before any work is done.
Where do you work from?
Mr Mastic is based in Crawley. Our applicators cover The Wrythe, along with the rest of our area.
Do I have to be there?
For indoor joints, yes, someone needs to let us in. After that, you can carry on with your day.
Are you fully insured?
Yes. We’re fully insured.
What information do you need?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
How we handle remedial sealant in The Wrythe
Remedial work is what we do when sealant has failed or been done badly. Silicone laid over silicone, smears across tiles, the wrong product in a moving joint or mould trapped underneath all have to come out. We’re often asked to deal with black mould underneath the bead and torn expansion joints, on shrunken worktop sealant, leaking tray & enclosure joints and failed movement joints.
London’s water is hard, so limescale builds up along sealant lines, in grout and on fittings. In The Wrythe, remedial sealant is as much about a room looking cared for as about keeping water out.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Location
- The Wrythe (SM5, SM6, SM1)
- Wider area
- Greater London
- Cover
- A year, on every job
- Price
- A clear price before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Also near The Wrythe
More services for The Wrythe
How it works
We keep the work tidy and contained to the area we are working on. Expect the work to take a few hours, depending on how many layers have to come out, and we tell you how long to leave it before we go. In The Wrythe, as in most of London, parking needs a little planning. It helps if you can point us to a visitor permit or a bay close to the door.
- We start by checking the joint for movement, leaks and the reason it failed.
- We strip the joint completely, removing any layers below.
- Next, any mould is treated and the joint dried.
- Moving joints get backing and a flexible sealant to suit.
- Finally we finish the joint and talk you through what we found.
Getting ready for the visit
- Try not to wet indoor joints just before the visit
- Let us know about earlier repairs to the joints
- Plan for the work area to be out of bounds to pets and children
Ask for a quote
If you’re in The Wrythe and need remedial sealant, call 0345 464 0079 or drop us an email. Tell us what the problem is and where, and you’ll get a clear quote before work begins.
Read more
For landlords and businesses
Landlords and agents in The Wrythe can book us as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
What we’re called out for in The Wrythe
One of the commonest remedial jobs is sealant on top of sealant. Silicone does not bond to silicone, so the top layer lifts and water and mould collect between the two.
The problems people generally mention when they call include:
- Wide, uneven beads that look worse than the old ones
- Products that weren’t meant for the joint
- Sealant that came away because the surface wasn’t prepared
- Movement joints that have split or pulled away
For an older house near a landmark such as Bishop Andrewes Church, older homes can move a little, which is hard on rigid grout and tired sealant.
Comparing quotes
- When the joint can take water or movement
- Whether VAT is included
- How hidden problems are handled
- Whether they seal over old material or remove it
When it is not the sealant
Before you book, it’s worth knowing the limits:
- Water damage behind tiles that needs a tiler
- Sealant in an older building that needs testing for asbestos first
- A cracked shower tray or bath (that needs repair or replacing)
Not sure which it is? You can call 0345 464 0079 or email us and we will tell you honestly.
Where we work in The Wrythe
- Botched or over-sealed joints
- Mouldy bath & shower sealant
- Expansion joints
- Failed movement joints
- Shrunken worktop sealant
- Leaking tray & enclosure joints
Surface by surface
Mouldy bath & shower sealant
Mould can sit behind the silicone, not just in it. We treat the exposed joint once the bead is out so the new sealant starts clean.
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.
Keeping the joints in good condition
Aftercare is simple, and it makes a real difference:
- Do not add new sealant on top of old
- Look for stains below bathrooms now and then
- Never fill a movement joint with mortar or grout
- Check trays and worktops don’t move
Watch the joint over the first few weeks, especially if movement was the problem. Should anything change, ring 0345 464 0079 or email us.
Mould trapped under over-sealed joints spreads unseen. By the time it shows through, the joint is well past saving.
DIY sealant or a professional job?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
What remedial sealant looks like in The Wrythe
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. 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.
As a London address, The Wrythe can be tricky for parking: tell us about permits, visitor bays or off-street space when you book. If you look after a building such as Victor Seymour Infants' School, washroom and kitchen sealant there needs the same care as at home, and schools and businesses are part of our work as well as homes.
The Wrythe is about 7 miles south of Stockwell, in Greater London. If you need remedial sealant in The Wrythe, it’s easy to get a quote: please call 0345 464 0079 or email us. We cover Greater London from our Crawley base. Across Greater London, we cover 764 places, and The Wrythe is one of them. London is on our list too, about 9 miles from The Wrythe.
Every address in SM5, SM6 and SM1 is within our area for remedial sealant, from the main roads to the quietest streets. Remedial sealant is available to properties on Elm Road, Byne Road and Mill Lane. Other places close to The Wrythe include Carshalton (1 mile south), Wallington (1 mile south-east), Rosehill (1 mile north-west), St Helier (1 mile north-west) and Benhilton (1 mile west). Further out, we also cover London (9 miles north), City of Westminster (10 miles north), Marylebone (10 miles north), Kensington (9 miles north), St Pancras (11 miles north) and Shoreditch (11 miles north).
What’s near The Wrythe
Typical jobs here are in homes near Carshalton Park, The Railway Tavern and Carshalton High School for Girls and the streets around them. There’s a railway station in The Wrythe itself: Carshalton station. Nearby you’ll also find Centrale Croydon (2.7 miles east) and Honeywood Museum (0.6 miles south). Open spaces near The Wrythe include The Spinney Local Nature Reserve and Duppas Hill.