Greater London · England
Keston Remedial Sealant
Problem with your failed sealant joints in Keston? We remove the old material, prepare the joints and seal them properly.
- Kitchen joints letting water behind the worktop
- Sealant peeling off a dusty or damp surface
- Sealant applied over old sealant that has lifted
DIY sealant or a professional job?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
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.
Remedial sealant in Keston, done properly
Movement and expansion joints fail when the sealant can’t stretch. The old sealant comes out and backing goes in to control the depth, then a flexible sealant matched to the movement goes in. Typical jobs include a second bead peeling off the first and floor or wall movement joints that have failed, across botched or over-sealed joints, leaking tray & enclosure joints and failed movement joints.
London’s water is hard, so limescale builds up along sealant lines, in grout and on fittings. In Keston, remedial sealant is as much about a room looking cared for as about keeping water out.
Your job is guaranteed for a year, as with all our work.
- Location
- Keston (BR2)
- Wider area
- Greater London
- Cover
- One year on every job
- Price
- A clear price before work begins
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
More services for Keston
Landlord and commercial work in Keston
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
For anyone letting property in or around Keston, several properties can be quoted together. Send us the addresses and the work at each, and pictures by email help.
Remedial sealant in Keston: local notes
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.
For site and facilities teams at buildings such as Keston Church of England Primary School, 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. Keston is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Keston is about 3 miles south of Bromley, in Greater London. We provide remedial sealant to householders, landlords and businesses in Keston and the surrounding area. Across Greater London, we cover 764 places, Keston among them. For nearby work, see our London page.
Here we cover the BR2 postcode area for remedial sealant. Streets in the area include Church Road, Greys Park Close and Heathfield Road. Close by, we work in Nash (1 mile west), Farthing Street (1 mile south-east), Locksbottom (1 mile north-east), Leaves Green (2 miles south) and Hayes (2 miles north-west). Larger places within reach include London (11 miles north-west), City of Westminster (13 miles north-west), Marylebone (13 miles north-west), Kensington (14 miles north-west), St Pancras (13 miles north-west) and Shoreditch (12 miles north).
What’s near Keston
Around Keston, our work takes us to homes and buildings near South Park, Ravens Wood School and The Greyhound pub and the streets around them. The closest station to Keston is Hayes (Kent) station, about 1.5 miles north-west of the centre. Other landmarks nearby include Princess Royal University Hospital (1.1 miles east) and Bethlem Museum of the Mind (1.5 miles north). The countryside around Keston includes West Kent Golf Course nature reserve and Summer Hill.
Your questions about remedial sealant in Keston
Do you work for landlords with property near Hayes (Kent) station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. Just phone 0345 464 0079 or email us with the address and what needs doing, and we’ll give you a clear price.
Can worn sealant in a flat in Keston cause a leak downstairs?
Yes. In a flat, water from a failed bath or shower seal has only one way to go, and that’s down. Cutting out the old sealant and laying a new bead early stops it getting that far.
How long before the joint can be used?
Cure times vary by product and the temperature. We tell you how long to leave it before we go.
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.
Can failed expansion joints be resealed?
Yes. Failed movement joints are cut out and resealed with backing and a flexible sealant suited to the movement.
Can you remove old sealant without damaging the bath?
Yes. We cut and lift the old sealant with tools suited to the surface, and the residue is cleaned away. Any existing damage is pointed out before any work starts.
Do you take out the old sealant first?
Yes, always, and completely. New sealant will not bond properly to old, so the joint is cleaned back first.
What sealant do you use?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
Looking after it afterwards
Simple care keeps the joints in good condition. We recommend:
- Report a tray that rocks or a worktop that lifts
- Don’t point over movement joints
- Look for stains below bathrooms now and then
- Air the bathroom so the sealant can dry
Go easy on the new sealant: a mild cleaner and a soft cloth, with no blades or scourers.
Mould trapped under over-sealed joints spreads unseen. By the time it shows through, the joint is well past saving.
What happens if it’s left?
Hidden water does the most damage: wet floors, stained ceilings and swollen worktops. Dealing with the joint now is a small job by comparison. Damp from a failed joint spreads quietly in older London brickwork and timber, and once it shows in Keston, the repair is bigger than a sealant job.
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. You will know the price before we begin.
Why Keston customers choose us
- Colour picked to suit the job
- We are fully insured
- Old sealant always removed completely
- A 12-month guarantee on all work
Take a look at how sealant jobs are priced and our reviews.
How the visit works
We keep the work tidy and contained to the area we are working on, so you can get on with your day. The job normally takes a few hours, depending on how many layers have to come out, and we tell you how long to leave it before we go. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Keston. A visitor permit or a nearby bay makes the visit run more smoothly.
- We look at how the sealant has failed and check for movement or a leak path.
- We strip the joint completely, removing any layers below.
- 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.
Preparing for the visit
- Mention any tricky access
- For business premises, tell us about site rules or sign-in
- For indoor joints, keep the area dry beforehand if you can
Ask for a quote
There’s no standard price list. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or drop us an email.
Related advice
Common problems we fix in Keston
One of the commonest remedial jobs is sealant on top of sealant. Silicone doesn’t bond to silicone, so the new layer peels, and damp and mould settle between them.
These are the problems we’re asked about most:
- Leaks that keep coming back after resealing
- Thick, messy sealant smeared over tiles
- Torn expansion joints
- A second bead peeling off the first
If you live in an older home near Keston Parish Church, bathrooms in older houses have often been refitted more than once, with sealant laid over sealant.
Questions to ask before you book
- How long to leave it before use
- Whether the sealant suits the joint
- Whether all the old sealant comes out first
- What happens if they find a problem under the old sealant
What affects the cost of remedial sealant
The price is agreed before any work begins. It’s based on:
- The old material and how stubborn it is
- How many rooms, windows or areas are involved
- Which sealant suits the joint
- Mould in or behind the old joints
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all play a part, and we’ll explain the quote if you ask.
Helping us quote
You don’t need to know the technical terms. Just tell us:
- Any access issues, like height or stairs
- Whether it has been sealed before
- The address or postcode of the job
- If it’s domestic, commercial or a hotel
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is. When it suits you, call 0345 464 0079 or drop us an email.