Greater London · England
Bathroom Resealing in Streatham
Bath, shower, basin, wet room, worktop and sink resealing for householders, landlords and businesses in Streatham. Fully insured, ARBOMaster approved and guaranteed for a year.
- Leaking joints on a shower screen
- Water getting behind the bath panel
- Black spots spreading through the bead
About our bathroom resealing in Streatham
Sealant that is mouldy, cracked or peeling is worth sorting before it lets water through. Just phone 0345 464 0079 or drop us an email with a photo of the joints, and you will get a clear quote before any work starts. We work on baths, kitchen worktops & upstands and sinks & splashbacks, and people most often call us about a joint torn by a bath that flexes and mouldy sealant that has gone black.
Hard London water leaves limescale on sealant, grout and taps alike. For a bathroom or kitchen in Streatham, getting the joints right keeps water where it belongs and the room looking clean.
All our work is covered by our one-year guarantee, wherever you are in Greater London.
- Place
- Streatham (SW16, SW2, CR4, SW12)
- Wider area
- Greater London
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Streatham 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, so tired sealant is best dealt with early.
If you live in an older home near St Leonard's Church, walls and floors in older homes can move, and sealant and grout show it first. Rented homes near Streatham station change hands often, and mouldy sealant is one of the first things a new tenant notices, so it’s worth renewing between lets. Streatham is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Streatham is about 5 miles south of London, in Greater London. Jobs in Streatham get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. 764 places in Greater London are on our list, from the larger towns to small villages.
Postcode districts we cover here for bathroom resealing: SW16, SW2, CR4 and SW12. Whether your property is on Stanthorpe Road, Gleneagle Mews and Madeira Road or a nearby road, we can help. Streatham is on the A205 and A216, which makes it straightforward to reach with everything needed for bathroom resealing. Other places close to Streatham include Streatham Park (1 mile west), Furzedown (1 mile west), Streatham Hill (1 mile north), Hyde farm estate (1 mile north) and Grange Mills (1 mile north-west). Larger places within reach include London (5 miles north), City of Westminster (6 miles north), Marylebone (6 miles north), Kensington (6 miles north-west), St Pancras (7 miles north) and Shoreditch (7 miles north).
Landmarks near Streatham
Typical jobs here are in homes near Bishop Thomas Grant Catholic Secondary School, Streatham Common and Waldorf School of South West London and the streets around them. There’s a railway station in Streatham itself: Streatham station. A little further out are Clockworks Museum (1.1 miles east) and Southside Wandsworth (3.3 miles north-west). Green spaces nearby include Knight's Hill and Battersea Park Lake.
Landlord and commercial work in Streatham
Letting agents often deal with us directly. Tell us the address, the job and how access works and we will quote.
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
What happens if it’s left?
A failed joint gets more costly to put right the longer it’s left. Water that gets behind a bath soaks into the floor, the panel and sometimes the ceiling below, turning a small job into a building repair. 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 Streatham, the repair is bigger than the sealant job would have been.
The cost depends on how much there is to do, how hard the old material is to remove and access to the work. We give a clear quote before any work starts, so you know where you stand.
Why choose Mr Mastic in Streatham
- Old sealant always removed completely
- You choose the colour before work begins
- ARBOMaster approved applicator
- Arbo and Everbuild products
Read our cost guide and what customers say.
What we cannot put right
To be straight with you, some problems need a different trade:
- A tray that rocks until it’s re-bedded
- A leaking waste, trap or valve
- Cracks in the tray itself rather than the joint
If in doubt, call 0345 464 0079 or send us an email and we will say what we think.
Joints and surfaces we work on
- Basins & vanity units
- Baths
- Shower trays & enclosures
- Sinks & splashbacks
- Wet rooms
- Kitchen worktops & upstands
Places near Streatham
What else we do in Streatham
FAQs for Streatham
Can worn sealant in a flat in Streatham cause a leak downstairs?
Yes. In a flat, water from a failed bath or shower seal has only one way to go, and that is down. A proper reseal before the leak starts is the easy fix.
Do you work for landlords with property near Streatham station?
Yes, landlords and agents are among the people we work for. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
My sealant has gone black. Can you sort it?
Yes, by replacing the sealant. Cleaning products may lighten it, but the lasting fix is new anti-fungal silicone on a clean, treated joint. Airing the room well helps stop it returning.
Do you hold any approvals?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
Will there be a smell?
There can be a smell while the sealant cures, but it fades. Opening a window helps.
Will you leave a mess?
No. The area is protected while we work and cleaned up afterwards.
Can you quote for more than one area?
Yes, we can. Several rooms, windows or areas can go on one quote.
What colours of sealant can you use?
Most people choose white or clear, but other colours can be used to suit tiles and worktops. Let us know your preference when you ask for a quote.
DIY sealant or a professional job?
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Aftercare tips
A little care helps the new joints last. We recommend:
- Don’t leave water standing on kitchen joints
- Let new sealant cure fully before it gets wet
- Avoid abrasive pads on the sealant
- Run the extractor fan during and after every shower
Clean the silicone with care: warm soapy water and a soft cloth do the job. Avoid scouring pads and anything sharp, and a nicked bead lets mould in sooner.
Watch for the early signs: lifting ends, gaps, dark shadows under the bead or a stain downstairs. If you spot one, it’s time to reseal.
What affects the cost of bathroom resealing
There’s no set price list. The quote depends on:
- How easy the joints are to reach
- The product the joint needs
- How much old sealant there is and how hard it is to remove
- Any mould that needs treating
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether the work is at height. Your quote takes all of that into account.
Helping us quote
To help us quote quickly, let us know:
- Where the job is, and your postcode
- What’s wrong with the joints now
- Whether it’s a home or a business
- A few photos by email, if you can
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.
The process
The work is kept neat and contained to the area we are working on, so you can get on with your day. Expect the work to take half a day or less for one room, longer when the kitchen is included, and we tell you how long to leave it before we go. For a job in Streatham, parking and access are the things to plan: tell us about permits, visitor bays or off-street space, which floor we’re working on and whether there’s a lift.
- We look at every joint first and check for movement or leaks.
- The old silicone is cut out completely, along with the film it leaves on the tiles.
- The joint is cleaned, degreased and treated for mould.
- With the joint dry, and any bath loaded with water, a single bead of anti-fungal silicone is applied.
- We tool the bead to a neat finish and give you the cure time, usually around 24 hours.
Preparing for the visit
- For indoor joints, keep the area dry beforehand if you can
- Keep children and pets away from the work area
- Tell us if parking is tricky
Get a quote
Getting a quote is simple: let us know what needs doing and where, and roughly how big it is. Photos by email help us understand the job.