Greater London · England
Brixton Remedial Sealant
Removing failed, mouldy or leaking sealant and putting it right for homes and businesses in Brixton and across Greater London. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Wide, uneven beads that look worse than the old ones
- Caulk or the wrong sealant used in a wet area
- Sealant applied over old sealant that has lifted
Remedial sealant in Brixton, done properly
A joint that keeps letting you down needs more than another bead. It helps to have pictures when you ring 0345 464 0079 or send us an email, and say how long ago it was last done. We work on expansion joints, failed movement joints and botched or over-sealed joints, and people most often call us about torn expansion joints and beads that never stuck properly.
In much of London, period terraces have been converted into flats over the years, and bathrooms were often squeezed into small rooms. Small, steamy rooms are where mould gets into sealant and grout fastest.
All of our work is guaranteed for twelve months.
- Place
- Brixton (SW2, SW9, SW4)
- Wider area
- Greater London
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
What happens if it’s left?
Repeat failures have a cause. Taking time to find the cause, whether it’s movement, a leak or the wrong product, is what stops it happening again. In a flat in Brixton, failed sealant seldom stays inside your own four walls: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
Doing several joints on one visit usually makes better use of the time than several visits. We’ll give you a clear price for the lot.
Why choose Mr Mastic in Brixton
- Colour picked to suit the job
- Trusted Arbo and Everbuild sealants
- We agree the colour with you first
- An ARBOMaster approved applicator
Do you need remedial sealant in Brixton?
Sealant needs a clean, dry surface with no grease on it. Residue, moisture or dust left in the joint weaken the bond, and the joint starts to come away early.
The most common problems we see are:
- Leaks that keep coming back after resealing
- Kitchen joints letting water behind the worktop
- Movement joints that have split or pulled away
- Thick, messy sealant smeared over tiles
Rented homes near Brixton station change hands often, and a joint that keeps failing is best fixed properly while the property is empty.
What your quote should include
- What the cure time is
- Who turns up on the day
- Whether you can choose the colour
- What guarantee comes with the work
Quotes for remedial sealant in Brixton
We quote each job individually. These are the things that affect it:
- Any working-time requirements on site
- The size of the job
- Which sealant suits the joint
- Any mould that needs treating
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
What we need to know
To make quoting easier, please include:
- How many joints, rooms or windows are involved
- The problem you’ve noticed
- Whether it has been sealed before
- The address or postcode of the job
If you are in Brixton and need remedial sealant, ring 0345 464 0079 or drop us an email. Tell us what the problem is and where, and you will get a clear quote before work begins.
Surface by surface
Movement & expansion joints
Bonding on three sides is a common reason movement joints tear. Backing rod or bond-breaker tape prevents it, letting the sealant flex between the two faces.
Leaking trays & enclosures
A cracked tray, failed valve or leaking waste needs a different fix. We say so rather than reseal.
Places near Brixton
More services for Brixton
DIY versus a professional finish
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
When it isn’t the sealant
Honest advice matters more to us than a booking, so here’s what sealant cannot fix:
- Old mastic in a building from before 2000 that should be checked for asbestos before it’s disturbed
- A tray or bath that’s cracked
- A bath, tray or worktop that moves until it’s properly fixed
If you are not sure, just call 0345 464 0079 or send us an email and we’ll give you a straight answer.
What we seal
- Shrunken worktop sealant
- Failed movement joints
- Leaking tray & enclosure joints
- Botched or over-sealed joints
- Expansion joints
- Mouldy bath & shower sealant
FAQs for Brixton
Can you help a landlord with a rental near Brixton station?
Yes. We work for landlords and letting agents as well as householders, and several properties can go on one quote. You can phone 0345 464 0079 or email us with the details for a clear quote.
Is parking a problem for a job in Brixton?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. The visit is then planned around what’s available.
What if the leak isn’t the sealant?
You’ll hear it from us. If it’s a cracked tray, a failed valve or a leaking waste, resealing won’t fix it, and we won’t reseal for the sake of it.
Where are you based?
We are based in Crawley, and we work across South East England, London and Scotland.
How much does remedial sealant cost in Brixton?
We do not publish prices, because the cost depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
How long does remedial resealing take?
Longer than a simple reseal, because every layer has to come out. Most jobs take a few hours.
Should I try DIY first?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Do the sealants smell?
Possibly a little. It fades as the sealant cures.
How it works
There’s no need to move everything out before we come, only the area right around the joints. We protect the rest, and the work takes a few hours for a typical bath or shower, longer where several layers have been applied for a typical job. For a job in Brixton, parking and access are the things to plan: let us know about parking, the floor we will be working on and any lift or shared entrance.
- First we find out how and where the joint has failed.
- All the old sealant comes out, including any layers underneath.
- The joint is cleaned, treated for mould and left to dry.
- Where the joint moves, backing and a flexible sealant suited to the movement go in.
- The new joint is tooled neatly and we explain anything else we found.
How to prepare
- Tell us about any water getting in
- Clear items away from the joints we are working on
- For indoor joints, keep the area dry beforehand if you can
Get a quote
Asking for a quote is easy: tell us what needs doing and where and its rough size. Photos by email help us understand the job, and we will take it from there.
Advice
Remedial sealant around Brixton
London’s water is hard, so limescale builds up on sealant, grout and fittings. There are hotels and other places to stay in and around Brixton. Hotel bathrooms are part of our work as well as homes, and can be done room by room.
Managing a site like Sudbourne 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. Homes close to Trinity Congregational Church include some older properties, and timber floors under older bathrooms flex, so joints need a sealant that moves with them.
Brixton is about 1 mile south of Stockwell, in Greater London. Anywhere in SW2, our applicators can take on remedial sealant. Our area takes in 764 places across Greater London, large and small.
Here we cover the SW2, SW9 and SW4 postcode area for remedial sealant. Remedial sealant is available to properties on Acre Lane, Jelf Road and Trent Road. Brixton is on the A204 and A2217, so it’s easy for us to get to with everything needed for remedial sealant. Nearby, we also carry out remedial sealant in Stockwell (1 mile north), Clapham Park (1 mile west), Angell Town (1 mile north), Loughborough Junction (1 mile north-east) and Tulse Hill (1 mile south-east). Further out, we also cover London (3 miles north), City of Westminster (4 miles north), Marylebone (4 miles north), Kensington (5 miles north-west), St Pancras (5 miles north) and Shoreditch (5 miles north).
Around Brixton
Locally, jobs take us to homes and businesses close to Trinity Arms, Max Roach Park and Trinity Academy. Brixton has its own railway station: Brixton station. A little further out are London General Cab Company Museum (0.9 miles north) and Baynard's Castle (3.8 miles north). Open spaces near Brixton include Battersea Park Lake and Centre for Wildlife Gardening.