Greater London · England
Bathroom Resealing in Walworth
Problem with your baths, showers and worktops in Walworth? We remove the old material, prepare the joints and seal them properly, with a one-year guarantee.
- Two layers of silicone, both failing
- Gaps between the worktop and the wall
- Splits where the tray meets the wall
About our bathroom resealing in Walworth
A reseal only lasts if the joint is properly prepared. The old sealant is removed to the last smear, then the joint is cleaned, degreased and treated for mould. New silicone goes on only when the joint is fully dry. We work on sinks & splashbacks, basins & vanity units and shower trays & enclosures, and common reasons people get in touch are black spots spreading through the bead and splits where the tray meets the wall.
London homes include a lot of flats, conversions and mansion blocks, so a bathroom is often directly above a neighbour’s ceiling. In Walworth, that is a good reason to put tired sealant and grout right early.
We guarantee the work for a year. If something is not right with it in that time, tell us and we’ll put it right.
- Place
- Walworth (SE1P, SE17, SE1)
- Wider area
- Greater London
- Cover
- One year on every job
- Quotes
- A clear price before work begins
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Surface by surface
Basins & vanity units
The back of a basin gets wet every time someone washes. Corners behind basins are where mould tends to start, so it’s cut out and renewed just like a bath joint.
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.
DIY versus a professional finish
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
For landlords and businesses
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we will give you a quote.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Common problems we fix in Walworth
Black mould is behind a lot of resealing. Steamy rooms that do not dry out keep the silicone damp for hours, and mould that has grown into the silicone usually will not clean off.
These are the problems we’re asked about most:
- New sealant laid over old sealant that is now lifting
- Mouldy sealant that has gone black
- A messy, uneven bead from a previous reseal
- Water getting behind the kitchen upstand
Letting a property close to Elephant & Castle station? Then a reseal between tenants is a quick way to make the bathroom and kitchen look cared for.
Comparing quotes
- What happens if the job turns out different
- Who does the work, and how experienced they are
- Are they insured?
- Which colour the sealant will be
Walworth: your questions answered
I let a flat near Elephant & Castle station. Can you help?
Yes, rental work is part of what we do. Just call 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear quote.
Is parking an issue for bathroom resealing in Walworth?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. The visit is then planned around what’s available.
Can mouldy silicone be sorted out?
Yes, we can. The old sealant comes out, the mould is treated, and we reseal with anti-fungal sanitary silicone.
Where are you based?
Mr Mastic is based in Crawley. Our applicators cover Walworth.
Do I need to be at home?
For indoor joints, yes, someone needs to let us in. After that, you can carry on with your day.
How long does a bath or shower reseal take?
That depends on the number of joints and the state of the old sealant. For most single baths or showers, allow a couple of hours.
Is it OK to put new sealant on top of the old bead?
No. Fresh silicone cannot stick to the old bead, so it peels away and hides mould and water. All the old sealant comes out first.
Do you come to Walworth?
Yes. We work in Walworth. To book, phone 0345 464 0079 or send us an email.
What we can’t put right
We’ll always be straight with you, so here’s what new sealant won’t do:
- A cracked shower tray or bath (that needs repair or replacement)
- Leaks from a shower valve, waste or pipework (a plumber’s job)
- Cracked or missing grout between tiles (that is regrouting)
If you are not sure, just ring 0345 464 0079 or drop us an email and we’ll give you a straight answer.
Surfaces we seal
- Shower trays & enclosures
- Baths
- Wet rooms
- Kitchen worktops & upstands
- Basins & vanity units
- Sinks & splashbacks
The process
Good joint work is mostly preparation, and we don’t rush it. Every joint is cleaned and dried before new material goes in. All told, the work takes a couple of hours for a single bath or shower. In Walworth, as in most of London, parking needs a little planning. A visitor permit or a nearby bay makes the visit run more smoothly.
- We cover the area around the joints we are working on.
- Old sealant is sliced away and the residue removed.
- We treat any mould and let the joint dry properly.
- Any bath is filled with water, then we lay a bead of anti-fungal silicone in white, clear or a matching colour.
- We finish the joint, clear up and tell you how long to leave it before it gets wet.
How to prepare
- Tell us about access, such as stairs, a lift or high-level joints
- Keep pets and children clear of the area while we work
- Mention any parking rules near the property
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.
Related advice
Also near Walworth
Also in Walworth
Walworth homes and their sealant
London has hard water, 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.
Homes close to Lady Margaret Church include some older properties, and older homes can move a little, which is hard on rigid grout and tired sealant. Walworth is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
Walworth is about 1 mile south of London, in Greater London. Every kind of property in Walworth can book us for bathroom resealing. The work is guaranteed for a year. We cover 764 towns and villages across Greater London, from the larger towns to small villages.
Postcode districts we cover here for bathroom resealing: SE1P, SE17 and SE1. Whether your property is on Mina Road, Ash Avenue and Angel Lane or a nearby road, our applicators can take on the job. If you’re just outside Walworth, we cover London (1 mile north), Bermondsey (1 mile north-east), Camberwell (1 mile south), South Bermondsey (1 mile east) and Denmark Hill (2 miles south). Further out, we also cover City of Westminster (3 miles north-west), Marylebone (3 miles north-west), Kensington (5 miles west), St Pancras (3 miles north-west), Shoreditch (3 miles north) and Walthamstow (7 miles north-east).
Local landmarks in Walworth
In Walworth, that means homes and buildings near University Academy of Engineering South Bank, Nursery Row Park and Lord Nelson pub. Other local landmarks include Lambeth Palace Library (1.3 miles north-west) and St Saviour's and St Olave's Church of England School (under half a mile north). For rail, the closest station is Elephant & Castle station, about 0.5 miles north-west of the centre. A little further out are Gabriel's Wharf (1.5 miles north-west) and The Walworth Clinic (within half a mile west). Not far away are Bellenden Road Nature Garden and St. James's Park Lake.
Looking after it afterwards
Aftercare is simple, and it makes a real difference:
- Use gentle cleaners on the silicone
- Keep scourers and sharp tools away from the bead
- Give the silicone its full cure time
- Wipe up water along the back of the worktop
Keep bottles and razors off the sealant line, as they hold water against it. A quick squeegee after showering helps the joint dry.
There’s no need to wait for a full refurbishment. Like paintwork, sealant needs renewing from time to time, and renewing it as soon as it fails protects everything around it.