Greater London · England
Remedial sealant & repairs in Streatham, Greater London
Removing failed, mouldy or leaking sealant and putting it right for householders, landlords and businesses in Streatham. Fully insured, ARBOMaster approved and guaranteed for a year.
- Sealant that came away because the surface wasn’t prepared
- Kitchen joints letting water behind the worktop
- Torn expansion joints
Why deal with it now?
Remedial work takes longer than a straight reseal, but rarely a lot: it takes a few hours for a typical bath or shower, longer where several layers have been applied. Compared with chasing the same leak every few months, it’s time well spent. Converted houses in London often have a bathroom above someone else’s living room, so a small leak from tired sealant can mean a neighbour’s ceiling and a lot of disruption. Putting it right early is much less trouble.
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please ring 0345 464 0079 or drop us an email.
What you get with us
- White, clear, grey or another colour, product permitting
- 180+ five-star Google reviews
- More than 20 years in sealant work
- A sealant colour to suit the surroundings
Take a look at what affects the cost or our reviews.
Remedial sealant in Streatham, done properly
The wrong product in the wrong joint will not last, however tidy it looks. We take it out and use a sealant made for that joint. We work on shrunken worktop sealant, mouldy bath & shower sealant and failed movement joints, and people most often call us about movement joints that have split or pulled away and wide, uneven beads that look worse than the old ones.
London homes include a lot of flats, conversions and mansion blocks, so a bathroom is often directly above a neighbour’s ceiling. In Streatham, that is a good reason to put tired sealant and grout right early.
All our work is covered by our one-year guarantee.
- Where
- Streatham (SW16, SW2, CR4, SW12)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Price
- A clear price before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Nearby places to Streatham
Also in Streatham
Looking after it afterwards
Simple care keeps the joints in good condition. Our advice:
- Do not wait for a small gap to become a leak
- Never seal over old silicone
- Keep movement joints clear of mortar and paint
- Keep an eye on the ceiling below the bathroom
Clean gently: no scraping, scouring pads or harsh chemicals.
Warning signs: sealant lifting at the ends, a second bead visible on top of the first, black mould under the silicone, or stains below a bathroom. Any of them means it’s time for remedial work.
Common problems we fix in Streatham
All sealant wears out eventually. Mould grows into the silicone, the surface hardens and the bead shrinks, faster where ventilation is poor. Then the only fix is removal and a new bead.
It’s worth asking for a quote if you see:
- Torn expansion joints
- Gaps opening along the back of the worktop
- A second bead peeling off the first
- Dark patches showing through the sealant
Streatham is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
Questions to ask before you book
- How the joint is cleaned and prepared
- Whether VAT is included
- How long the guarantee is
- What happens if the job turns out different
What we cannot put right
We’d rather tell you now than do work that won’t last, so here’s what sealant cannot put right:
- Movement from fittings that aren’t supported
- A leaking trap, valve or supply pipe
- Old mastic in a building from before 2000 that should be checked for asbestos before it’s disturbed
Not sure which it is? You can ring 0345 464 0079 or send us an email and we’ll tell you honestly.
What we seal
- Expansion joints
- Shrunken worktop sealant
- Failed movement joints
- Botched or over-sealed joints
- Mouldy bath & shower sealant
- Leaking tray & enclosure joints
What remedial sealant looks like in Streatham
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. London has a lot of flats and conversions, and a failed shower or bath seal in one can show up on the ceiling below, so tired sealant is best dealt with early.
If you live in an older home near St Leonard's Church, older homes can move a little, which is hard on rigid grout and tired sealant. Letting a property close to Streatham station? Then botched sealant from a previous quick fix is easier to strip out between tenants.
Streatham is about 5 miles south of London, in Greater London. Whether you are in the middle of Streatham or further out, remedial sealant is available for homes and businesses alike. Across Greater London, we cover 764 places, Streatham among them.
Postcode districts we cover here for remedial sealant: SW16, SW2, CR4 and SW12. That includes homes and businesses on Stanthorpe Road, Gleneagle Mews and Madeira Road and the roads around them. With the A205 and A216 close by, Streatham is simple for us to get to for remedial sealant. 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). Within a short drive, we also cover 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).
Near you in Streatham
Around Streatham, our work takes us to homes and buildings 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. Other landmarks nearby include 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.
For landlords and businesses
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. Several properties can be quoted together.
For anyone letting property in or around Streatham, jobs at different addresses can be quoted together. Send us the addresses and the work at each, and pictures by email help.
FAQs for Streatham
Is parking an issue for remedial sealant in Streatham?
In much of London, parking needs planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.
Can you help a landlord with a rental near Streatham station?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before we start.
Can I do it myself?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.
How long should I leave it?
Many sealants skin over quickly but take longer to cure fully. We’ll give you the cure time for the product we used.
How do I get a quote for remedial sealant in Streatham?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
Do you take out the old sealant first?
Yes. We cut out all the old sealant and clean the joint before resealing.
Is there any odour?
Sometimes, a little. Any smell clears as the sealant cures, and ventilation helps.
What should I tell you?
A short description and the location, plus photos if you have them. We will ask anything else we need to know.
What we do, step by step
Good joint work is mostly preparation, and we do not rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours for most joints, depending on how much old sealant has to come out. For a job in Streatham, parking and access are the things to plan: let us know about parking, the floor we’ll be working on and any lift or shared entrance.
- Surrounding tiles, trays and frames are protected first.
- Every layer of failed sealant is stripped out.
- The joint is degreased and checked for movement and leaks.
- Once dry, a suitable sealant is applied and tooled.
- We give you the cure time and explain what caused the failure.
Before we arrive
- Tell us about any previous sealing or DIY attempts
- Try not to wet indoor joints just before the visit
- Move anything stored near the joints
How to get a quote
For remedial sealant in Streatham, phone 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Read more
DIY versus a professional finish
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.