Greater London · England
New Malden Bathroom Resealing
Specialist bathroom resealing for New Malden: careful preparation, the right product and tidy work. Ask us for a quick quote.
- A messy, uneven bead from a previous reseal
- Water escaping at the shower enclosure
- A bead that has pulled away from the tiles
Bathroom resealing in New Malden, done properly
Showers work their sealant harder than baths. Trays, enclosures, screen profiles and wet room floors all need a flexible, waterproof seal. They’re resealed with anti-fungal sanitary silicone, tooled smooth so water runs off instead of sitting in a ridge. If you have black spots spreading through the bead and new sealant laid over old sealant that is now lifting, we can help, on wet rooms, basins & vanity units and kitchen worktops & upstands alike.
Hard London water leaves limescale on sealant, grout and taps alike. In New Malden, bathroom resealing is as much about a room looking cared for as about keeping water out.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Where
- New Malden (KT3, KT1, SW20)
- Region
- Greater London
- Guarantee
- 12 months on all our work
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
FAQs for New Malden
Can worn sealant in a flat in New Malden cause a leak downstairs?
Yes, and the first sign is often a stain on the ceiling below. A proper reseal before the leak starts is the easy fix.
Can you help a landlord with a rental near New Malden station?
Yes, we work for landlords and letting agents. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear quote.
Are you insured?
Yes. We’re fully insured.
What does bathroom resealing cost?
We do not publish prices, because the cost depends on the job: its size, the old material, access and the product needed. You will get a clear quote before work begins.
Can I choose the colour of the sealant?
White and clear are the most common choices, and other colours are available to suit tiles, trays and worktops. Tell us what you’d like when you get in touch.
Do you come to New Malden?
Yes. From our base in Crawley, we cover South East England, London and all of Scotland, and that includes New Malden.
Do you take out the old sealant first?
Yes, every time. New sealant will not bond properly to old, so any old material comes out before anything new goes in.
Can new silicone go straight over the old?
No. It’s a common reason for reseals failing. We cut out all of the old sealant, clean the joint and start again.
Signs you need bathroom resealing in New Malden
The wrong product fails fast. Acrylic caulk and general-purpose sealants aren’t designed for a joint that is wet every day, so they stain, crack or go mouldy before long. Wet areas call for a sanitary silicone with an anti-fungal additive.
Common reasons people contact us are:
- Gaps where the bath or tray has moved
- New sealant laid over old sealant that is now lifting
- Gaps between the worktop and the wall
- Damp behind the bath or under the tray
As a London address, New Malden can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Comparing quotes
- The length of the guarantee
- What the cure time is
- What preparation is included
- Whether the sealant suits the joint
Why deal with it now?
Sorting it now is quick: it takes around two hours for one bath or shower, longer for a whole bathroom. Wait for a leak and you may be looking at panels off, drying out and redecorating too. Damp from a failed joint spreads quietly in older London brickwork and timber, and by the time it shows on a wall or ceiling in New Malden, the repair is bigger than the sealant job would have been.
Combining jobs into one visit is normally more efficient than separate visits, so it’s worth mentioning everything you’d like done. We will give you a clear price for the lot.
Why choose Mr Mastic in New Malden
- Full insurance on every job
- Old sealant always removed completely
- Arbo and Everbuild products
- We agree the colour with you first
What we cannot put right
Before you book, it’s worth knowing the limits too:
- A tray or bath that is cracked through
- A tray that rocks until it’s re-bedded
- Failed grout lines across the wall
If you’re not sure, just phone 0345 464 0079 or email us and we will give you a straight answer.
Where we work in New Malden
- Basins & vanity units
- Shower trays & enclosures
- Sinks & splashbacks
- Baths
- Wet rooms
- Kitchen worktops & upstands
Also near New Malden
Other services in New Malden
What happens on the day
Before we leave, we go over the finished joints with you and explain the cure time. The work normally takes around two hours for one bath or shower, longer for a whole bathroom, depending on the size of the job. In New Malden, flats, stairs and shared entrances are part of the routine. If the building has a concierge, managing agent or access rules, tell us when you book.
- First the area is protected and every bit of old sealant removed.
- Next, the joint is cleaned and any mould is treated.
- We let it dry fully and fill the bath with water before sealing.
- New anti-fungal silicone goes on in a colour to suit and is tooled to a clean finish.
- We tidy up and give you the cure time, generally around 24 hours.
Before we arrive
- Tell us about any previous sealing or DIY attempts
- Keep pets and children clear of the area while we work
- Clear the area around the work
Ask for a quote
We don’t publish a price list, because every job is different. Instead, we give you a clear quote for your job. To get started, ring 0345 464 0079 or send us an email.
Read more
Landlord and commercial work in New Malden
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
What the job involves on each surface
Shower trays & enclosures
A tray that rocks will split any sealant. We check for movement before we reseal, and if the tray needs refixing, we will say so.
Baths
Most bath leaks begin along the long edge, particularly where there’s a shower over the bath. We finish it with a single, even bead of anti-fungal silicone, tooled so water can’t sit on it.
Keeping the joints in good condition
A little care helps the new joints last. We recommend:
- Wait for the cure time we give you
- Run the extractor fan during and after every shower
- Move toiletries away from the joint
- Keep scourers and sharp tools away from the bead
In a kitchen, don’t let water sit along the back of the worktop and keep hot pans off the bead. The drier the joint stays, the longer it lasts.
Mould that starts as a few spots spreads through the bead. Once it’s deep in the silicone, cleaning generally won’t remove it. Catching it early keeps it a simple reseal.
Bathrooms and kitchens in New Malden
London’s water is hard, so limescale builds up on sealant, grout and fittings, and it has to be cleaned off before new sealant goes in. In a London flat, water from a failed bath or shower seal can reach the neighbours below, which is why it’s worth fixing early.
In the older streets around New Malden Baptist Church, timber floors under older bathrooms flex, so joints need a sealant that moves with them. Managing a site like Christ Church New Malden CofE Primary School? Then 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.
New Malden is about 3 miles south-west of Wimbledon, in Greater London. If you need bathroom resealing in New Malden, it’s easy to get a quote: please call 0345 464 0079 or drop us an email. We cover Greater London from our Crawley base. New Malden is one of 764 places in Greater London we cover. We also work in London, around 10 miles away.
Postcode districts we cover here for bathroom resealing: KT3, KT1 and SW20. If you need bathroom resealing at a property on High Street, Ashcombe Square and Melrose Gardens or anywhere close by, we can help. You’ll find New Malden on the B283, so it’s easy for us to get to with everything needed for bathroom resealing. Neighbouring places we cover for bathroom resealing include Motspur Park (1 mile north-east), West Barnes (1 mile east), Norbiton (1 mile north-west), Coombe (1 mile north) and Raynes Park (1 mile east). Larger places within reach include London (10 miles north-east), City of Westminster (9 miles north-east), Marylebone (9 miles north-east), Kensington (7 miles north), St Pancras (11 miles north-east) and Shoreditch (12 miles north-east).
What’s near New Malden
Typical jobs here are in homes near Beverley Park, The Glasshouse pub and Holy Cross School, among other places. New Malden has its own railway station: New Malden station. Nearby you will also find Chessington Castle Hill (3.3 miles south) and Bentall Centre (1.9 miles west). The countryside around New Malden includes Rose Walk and Kingston Hill Road area.