Greater London · England
Bathroom & kitchen resealing in Grange Mills, Greater London
Bathroom resealing across Grange Mills and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Leaking joints on a shower screen
- Damp behind the bath or under the tray
- Gaps where the bath or tray has moved
How to look after the new joints
A little care helps the new joints last. Our advice:
- Run the extractor fan during and after every shower
- Move toiletries away from the joint
- Do not leave water standing on kitchen joints
- Squeegee the walls and tray after use
Give the silicone time to cure before it gets wet, which is usually around 24 hours. After that, a quick wipe after showering helps keep it clean.
Don’t wait for a refit to deal with failed sealant. Sealant is a maintenance item, like the paint on a window frame, and renewing it as soon as it fails protects everything around it.
Bathroom resealing for homes and businesses in Grange Mills
A shower joint gets soaked every day. 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. We work on wet rooms, kitchen worktops & upstands and sinks & splashbacks, and common reasons people get in touch are mouldy sealant that has gone black and gaps between the worktop and the wall.
Much of London’s older housing is Victorian and Edwardian terraces, many of them now split into flats, and bathrooms were often squeezed into small rooms. A compact bathroom that steams up every day is hard on silicone and grout, and homes in Grange Mills are no different.
Every job comes with our one-year guarantee.
- Location
- Grange Mills (SW12, SW4, SW2)
- Wider area
- Greater London
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
What bathroom resealing looks like in Grange Mills
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. London’s water is hard, so limescale builds up on sealant, grout and fittings.
Managing a site like Henry Cavendish Primary School? Then we reseal washrooms and kitchens in schools and businesses as well as homes. Letting a property close to Balham station? Then mouldy sealant is one of the first things a new tenant notices, so it’s worth renewing between lets.
Grange Mills is about 2 miles south-west of Stockwell, in Greater London. For bathroom resealing in and around Grange Mills, it’s easy to get a quote: please ring 0345 464 0079 or drop us an email. We are based in Crawley and cover Greater London, Grange Mills included. Across Greater London, we cover 764 places, Grange Mills among them.
Jobs for bathroom resealing in SW12, SW4 and SW2 works the same way as everywhere else we cover. You will find streets such as Lynn Road, Weir Road and Byrne Road, all of which we cover. We also cover the places around Grange Mills: Hyde farm estate (1 mile south-east), Balham (1 mile south-west), Clapham Park (1 mile north-east), Streatham Hill (1 mile east) and Streatham Park (1 mile south). Further out, we also cover London (4 miles north-east), City of Westminster (5 miles north), Marylebone (5 miles north), Kensington (5 miles north-west), St Pancras (6 miles north) and Shoreditch (6 miles north-east).
Near you in Grange Mills
In Grange Mills, that means homes and buildings near The Bedford pub, Waldorf School of South West London and La Retraite Roman Catholic Girls' School. There’s a railway station in Grange Mills itself: Balham station. Well-known places in the area include London Sewing Machine Museum (0.9 miles south-west) and St James' Hospital (0.9 miles west). The countryside around Grange Mills includes Knight's Hill and Battersea Park Lake.
Questions from Grange Mills
Can worn sealant in a flat in Grange Mills cause a leak downstairs?
It can, yes: water that gets past a split bead or cracked grout often runs under the tray and shows on the ceiling below. Replacing the sealant and grout before that happens is much less trouble than repairing a neighbour’s ceiling.
Is parking an issue for bathroom resealing in Grange Mills?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. That way the visit can be planned around it.
What should I tell you?
Let us know what needs doing and where, with pictures by email if possible. If we need more, we will ask.
Should I try DIY first?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
Where is Mr Mastic based?
Our base is in Crawley, and we work across South East England, London and Scotland.
Can you just seal over the old silicone?
No. Sealing over the top looks fine for a few weeks, then lifts, because silicone doesn’t bond to silicone. Every trace of the old bead is removed first.
Can you work on commercial sites?
Yes. We can plan bigger jobs in stages to suit the site.
Do you work for landlords and businesses?
Yes, we do. Domestic, commercial and hotel work are all part of what we do, and we’re fully insured.
When to call us in Grange Mills
Not every tube in the shop is meant for a shower. Acrylic caulk and general-purpose sealants are not designed for a joint that is wet every day, so they crack, discolour or grow mould quickly. Wet areas call for a sanitary silicone with an anti-fungal additive.
These are the problems we are asked about most:
- A bead that has pulled away from the tiles
- Leaking joints on a shower screen
- Gaps where the bath or tray has moved
- Water getting behind the kitchen upstand
As a London address, Grange Mills can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
What your quote should include
- How long the guarantee is
- What the cure time is
- How the joint is cleaned and prepared
- What product goes in the joint
Landlords, agents and businesses in Grange Mills
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. Several properties can be quoted together.
Housing providers, facilities teams and property managers book us too in Grange Mills and across Greater London. We can quote a run of properties together.
How we quote for bathroom resealing
Jobs vary more than people expect. What affects the quote:
- Access and height
- The type of sealant required
- When we can work, for business premises
- How much old sealant there is and how hard it is to remove
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 email us.
Helping us quote
Photos by email are helpful but not essential. Try to tell us:
- Whether it’s a home or a business
- Pictures of the joints, sent by email
- Any access issues, like height or stairs
- Any previous sealing or DIY work
For a quote, call 0345 464 0079 or drop us an email with the location and a short description of the problem. You will have a clear quote before work begins.
Towns and villages near Grange Mills
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What we can’t put right
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Cracks in the tray itself rather than the joint
- Leaks from a shower valve, waste or pipework (a plumber’s job)
- Loose or hollow tiles, or failed tanking behind them
If in doubt, phone 0345 464 0079 or email us and we will say what we think.
Joints and surfaces we work on
- Baths
- Shower trays & enclosures
- Wet rooms
- Sinks & splashbacks
- Kitchen worktops & upstands
- Basins & vanity units
How the visit works
The work is kept neat and contained to the joints we’re treating, so you can carry on as normal. The job usually takes a couple of hours for a single bath or shower, and we explain the cure time before we leave. In Grange Mills, 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.
- Protection goes down around the bath, shower or worktop.
- We cut away the old sealant and clean off what’s left.
- We treat any mould and let the joint dry properly.
- Baths are filled first, then anti-fungal sanitary silicone is applied in a colour to suit.
- We finish the joint, clear up and tell you how long to leave it before it gets wet.
Getting ready for the visit
- Mention if the joints have been sealed before
- Tell us if parking is tricky
- Mention any leaks or damp you’ve noticed
Getting a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we will explain how we’d tackle it. Whenever you are ready, call 0345 464 0079 or email us.
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How the job changes by surface
Baths
Baths move more than any other fitting, so it’s filled with water before the bead goes on. The joint is then laid with the bath at its lowest point and isn’t torn the first time it’s used.
Kitchen worktops & upstands
Kitchen joints need more degreasing than bathroom ones, since cooking leaves a film that stops silicone sticking. The extra cleaning is what makes the bead last.