Greater London · England
Remedial sealant & repairs in Balham, Greater London
Failed sealant joints in Balham need attention? We remove the old material, prepare the joints and seal them properly.
- Sealant applied over old sealant that has lifted
- Leaks that keep coming back after resealing
- Thick, messy sealant smeared over tiles
What happens on the day
You do not need to clear the whole room or building before we come, only the area right around the joints. We protect the rest, and the job takes a few hours for a typical bath or shower, longer where several layers have been applied for a typical job. In Balham, 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.
- First we work out whether the problem is the sealant, movement or a leak.
- Old beads and residue are removed down to clean surfaces.
- We treat any mould and dry the joint thoroughly.
- We reseal with a product suited to the joint, backed where needed.
- The joint is tooled and you’re told about anything else we found.
Before we arrive
- Try not to wet indoor joints just before the visit
- Let us know about stairs, lifts or work at height
- Mention any parking rules near the property
Get a quote
Getting a quote is simple: let us know the job and the location and its rough size. A few photos by email make the job easier to understand.
Advice
Remedial sealant for homes and businesses in Balham
Getting old sealant out properly is slow, careful work. We cut out every layer, clear the residue and degrease the surfaces, without scratching tiles, trays or frames. Only then can new sealant bond. Common call-outs are for thick, messy sealant smeared over tiles and movement joints that have split or pulled away, across botched or over-sealed joints, failed movement joints and mouldy bath & shower sealant.
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, and homes in Balham are no different.
There’s a 12-month guarantee on every job, large or small.
- Place
- Balham (SW12, SW17, SW4)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
When to call us in Balham
A lot of failed joints have been sealed over rather than replaced. Silicone doesn’t bond to silicone, so the top layer lifts and water and mould collect between the two.
People normally contact us when they notice one of these:
- Floor or wall movement joints that have failed
- Products that weren’t meant for the joint
- Dark patches showing through the sealant
- Sealant that came away because the surface wasn’t prepared
If you live in an older home near Church of St Mary, timber floors under older bathrooms flex, so joints need a sealant that moves with them.
What to look for in a quote
- Which sealant they’ll use, and why
- How much experience the applicator has
- What happens if they find a problem under the old sealant
- Whether you can choose the colour
Remedial sealant in Balham: local notes
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. London’s water is hard, which leaves limescale on sealant, grout and taps, and it has to be cleaned off before new sealant goes in.
Rented homes near Balham station change hands often, and botched sealant from a previous quick fix is easier to strip out between tenants. As a London address, Balham can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Balham is about 2 miles south-west of Stockwell, in Greater London. We carry out remedial sealant for homes and businesses in Balham and the surrounding area. 764 places in Greater London are on our list, from the larger towns to small villages.
Every address in SW12, SW17 and SW4 is within our area for remedial sealant. Local streets include Lynn Road, Weir Road and Byrne Road, and we cover them all. We also cover the places around Balham: Grange Mills (1 mile north-east), Hyde farm estate (1 mile east), Clapham Park (1 mile north-east), Streatham Park (1 mile south-east) and Tooting Bec (1 mile south-west). Larger places within reach include London (5 miles north-east), City of Westminster (5 miles north), Marylebone (5 miles north), Kensington (4 miles north-west), St Pancras (6 miles north) and Shoreditch (7 miles north-east).
Landmarks near Balham
In Balham, that means homes and buildings near Oak Lodge School, Wandsworth Common and The Bedford pub, among other places. Balham has its own railway station: Balham station. Well-known places in the area include St James' Hospital (0.5 miles west) and London Sewing Machine Museum (0.6 miles south-west). The countryside around Balham includes Knight's Hill and Battersea Park Lake.
Aftercare tips
Simple care keeps the joints in good condition. Our advice:
- Act on a lifting corner straight away
- Keep movement joints clear of mortar and paint
- Keep the room well ventilated
- Clean sealant with mild products only
Give the new sealant its full cure time: usually around 24 hours, or as long as we advise.
Warning signs: peeling layers, mould showing through the bead, leaks after showering or cracks in a movement joint. Each one is worth getting looked at.
Also in Balham
What affects the cost of remedial sealant
The price is agreed before any work begins. It’s based on:
- Whether there’s mould to deal with
- The size of the job
- How many areas need sealing
- How much old sealant there is and how hard it is to remove
Leaving a failed joint generally makes the job bigger, not smaller, as water and mould keep getting in. If you are unsure, phone 0345 464 0079 or send us an email and we’ll give you an honest view and a quote.
Asking for a quote
What to tell us when you ask for a quote:
- Photos by email, if that’s easy
- Roughly how big the job is
- What’s wrong with the joints now
- If someone has resealed it before
It all starts with a short chat. Describe the problem, the location and the size of the job. When it suits you, ring 0345 464 0079 or email us.
Work for landlords, hotels and businesses
For anyone letting property in or around Balham, several properties can go on one quote. Send us the addresses and the work at each, and photos by email help.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
How the job changes by surface
Windows & doors
A frame that keeps leaking may not be the mastic. If the frame joint isn’t the cause, we will say so.
Mouldy bath & shower sealant
Black mould inside the bead will not scrub out. The sealant is cut out completely, the joint treated with a mould remover and dried ahead of a new anti-fungal bead.
Common questions in Balham
Could a tired shower seal in my Balham flat affect the neighbours below?
Yes, and the first sign is often a stain on the ceiling below. Cutting out the old sealant and laying a new bead early stops it getting that far.
Can parking be tricky for a visit in Balham?
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.
When is the sealant fully cured?
Cure times vary by product. Before we leave, we’ll tell you the cure time.
Can old silicone be taken off without scratching the tiles?
Yes. We cut and lift the old sealant with tools suited to the surface, then clean off the residue. We point out any damage that’s already there.
Is it messy?
We keep the work tidy. We protect what’s around the joints.
Do you do commercial work?
Yes. We’ve worked for hotels, offices and other businesses and we are fully insured.
What information do you need?
The location, the problem and the rough size of the job. Photos by email help too.
Will there be a smell?
That depends on the sealant. Some smell for a while, some hardly at all.
Leave it or put it right?
It’s easy to scratch acrylic, enamel or an uPVC frame cutting out old sealant, and the residue left behind stops the next bead bonding. Careful stripping is where most of our time goes. Converted houses in London often have a bathroom above someone else’s living room, and a slow leak from a failed seal can end up in the flat below. Dealing with it early is far simpler.
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
Why book with us
- Neat joints and a tidy finish
- Over 20 years’ experience
- You choose the colour before work begins
- Full insurance on every job
Read our cost guide or our reviews.