Greater London · England
Erith Remedial Sealant
Removing failed, mouldy or leaking sealant and putting it right for homeowners, landlords and businesses in Erith. Fully insured, ARBOMaster approved and guaranteed for a year.
- Sealant applied over old sealant that has lifted
- Floor or wall movement joints that have failed
- A shower that leaks however often it’s resealed
When to call us in Erith
All sealant wears out eventually. Over the years it shrinks, hardens and gets colonised by mould, especially in damp, poorly aired rooms. At that point it has to come out.
Look out for these signs:
- Dark patches showing through the sealant
- A shower that leaks however often it’s resealed
- Floor or wall movement joints that have failed
- Beads that never stuck properly
As a London address, Erith can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Questions to ask before you book
- How the colour is chosen
- What insurance they hold
- Whether they seal over old material or remove it
- What product goes in the joint
How we handle remedial sealant in Erith
Removing failed sealant is the hardest part of the job. We cut out every layer, clear the residue and degrease the surfaces, taking care not to scratch the surfaces around it. Only then can new sealant bond. Typical jobs include movement joints that have split or pulled away and repeat leaks from the same joint, across leaking tray & enclosure joints, botched or over-sealed joints and failed movement joints.
Much of London’s older housing is Victorian and Edwardian terraces, many of them now split into flats, with bathrooms fitted into whatever space was available. Small, steamy rooms are where mould gets into sealant and grout fastest.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we will put it right.
- Location
- Erith (DA8, DA17, DA7)
- Wider area
- Greater London
- Guarantee
- A year, on every job
- Price
- A clear price before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Nearby places to Erith
Also in Erith
Different surfaces, different methods
Leaking trays & enclosures
When failed joints are the cause, they’re all cut out and renewed, including the screen profile and tray edges.
Windows & doors
Some leaks around windows come from the wall or the window itself. If the frame joint is not the cause, we will say so.
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Work for landlords, hotels and businesses
We work for landlords and letting agents as well as householders. Sealant work between tenants keeps a property looking cared for.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. Several properties can go on one quote.
How the visit works
Every visit runs the same way: we look at the joints together, mask and protect the surrounding surfaces, do the work and clear up. It generally takes a few hours for a typical bath or shower, longer where several layers have been applied. In a London area like Erith, the main things to plan are parking and access: 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 how the sealant has failed and check for movement or a leak path.
- We strip the joint completely, removing any layers below.
- We clean the joint, treat any mould and let it dry.
- Where the joint moves, backing and a flexible sealant suited to the movement go in.
- Finally we finish the joint and talk you through what we found.
Preparing for the visit
- Let us know about earlier repairs to the joints
- For business premises, tell us about site rules or sign-in
- Keep pets and children clear of the area while we work
Getting a quote
Want a quote for remedial sealant? Please phone 0345 464 0079 or email us with a few details. We will explain what we’d do and send you a clear quote before we start.
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Remedial sealant around Erith
London has hard water, which leaves limescale on sealant, grout and taps. 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.
Letting a property close to Erith station? Then botched sealant from a previous quick fix is easier to strip out between tenants. For an older house near a landmark such as Christ Church, timber floors under older bathrooms flex, so joints need a sealant that moves with them.
Erith is about 3 miles north-west of Dartford, in Greater London. Jobs in Erith get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Our Greater London coverage runs to 764 places, Erith among them. Our London page covers work nearby, about 11 miles away.
Jobs for remedial sealant in DA8, DA17 and DA7 is quoted and booked the same way as anywhere else. Streets in the area include Church Road, Town Square and Erith High Street, and we cover them all. Other places close to Erith include Northumberland Heath (1 mile south), Bexley Riverside (1 mile south), Belvedere (1 mile north-west), Lessness Heath (1 mile north-west) and Barnehurst (1 mile south). Further out, we also cover London (11 miles west), City of Westminster (14 miles west), Marylebone (14 miles west), St Pancras (13 miles west), Shoreditch (11 miles west) and Walthamstow (11 miles north-west).
Landmarks near Erith
Typical jobs here are in homes near Trinity School, The Cross Keys pub and Erith School. Erith has its own railway station: Erith station. Other landmarks nearby include Erith Museum (under half a mile east) and Erith and District Hospital (within half a mile south-west). Not far away are Crossness Nature Reserve.
How we quote for remedial sealant
We do not publish a price list, because jobs vary so much. The quote depends on:
- How easy the joints are to reach
- The number of rooms or windows
- Any working-time requirements on site
- The product the joint needs
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
Helping us quote
When you contact us, it’s useful to know:
- If it’s domestic, commercial or a hotel
- How many joints, rooms or windows are involved
- If someone has resealed it before
- The problem you’ve noticed
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will explain how we’d tackle it. When it suits you, phone 0345 464 0079 or drop us an email.
Looking after it afterwards
To keep the joints looking good and working properly:
- Do not wait for a small gap to become a leak
- Ask why a joint failed before redoing it
- Keep an eye on the ceiling below the bathroom
- Air the bathroom so the sealant can dry
Clean gently: no scraping, scouring pads or harsh chemicals.
If a joint has failed more than once, stop resealing it. Get the cause found first, or the next bead will go the same way.
Questions from Erith
Can worn sealant in a flat in Erith cause a leak downstairs?
It can, yes: water that gets past a split bead or cracked grout often runs under the tray and shows on the ceiling below. It’s far simpler to replace tired sealant early than to deal with a neighbour’s ceiling.
Is parking a problem for a job in Erith?
In much of London, parking needs planning: a visitor permit or a nearby bay makes the day run more smoothly.
Where are you based?
We are a Crawley-based firm, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Can you reseal a split movement joint?
Yes. Backing sets the depth and stops the sealant sticking to the back.
How long does the work take?
Longer than a simple reseal, because every layer has to come out. For most joints, it’s a few hours, and we confirm the time with your quote.
What should I tell you?
The location, the problem and the rough size of the job. If you can, email a few photos.
Is there any odour?
There can be a smell while the sealant cures. Opening a window helps.
Can you do several jobs on one visit?
Yes, we can. Several rooms, windows or areas can go on one quote.