Greater London · England
Lewisham Remedial Sealant
Removing failed, mouldy or leaking sealant and putting it right for Lewisham, backed by a 12-month guarantee. Ask us for a quote.
- Beads that never stuck properly
- Products that weren’t meant for the joint
- Torn expansion joints
About our remedial sealant in Lewisham
A movement joint stops working when its sealant splits or sets hard. We cut out the failed sealant and set the depth with backing, before resealing with a flexible product suited to the movement. We work on shrunken worktop sealant, expansion joints and botched or over-sealed joints, and common reasons people get in touch are sealant that came away because the surface wasn’t prepared and thick, messy sealant smeared over tiles.
London’s water is hard, so limescale builds up along sealant lines, in grout and on fittings. In Lewisham, remedial sealant is as much about a room looking cared for as about keeping water out.
The work is covered for a year after we finish. If there’s a problem with it, please call 0345 464 0079 or send us an email.
- Location
- Lewisham (SE13, SE8, SE6)
- Wider area
- Greater London
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Leave it or put it right?
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 London conversions, one flat’s bathroom is often above another flat’s ceiling, 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 for homes in Lewisham.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we’ll explain what it covers.
What you get with us
- Old sealant always removed completely
- Domestic, commercial and hotel work
- Sealant colour chosen to suit
- 12-month guarantee on every job
Read how sealant jobs are priced and customer reviews.
Towns and villages near Lewisham
Other services in Lewisham
Surface by surface
Windows & doors
Wrong-coloured or messy mastic can be replaced for appearance too, in a colour that suits the frame.
Leaking trays & enclosures
Where the joints are the problem, every bead is stripped and resealed with anti-fungal sanitary silicone, including the screen profile and tray edges.
What remedial sealant looks like in Lewisham
London’s water is hard, so limescale builds up on sealant, grout and fittings. Lewisham has hotels and guest accommodation nearby. As well as homes, we work in hotel bathrooms, where resealing and regrouting can be done room by room.
If you look after a building such as St Saviour's Catholic Primary School, we reseal washrooms and kitchens in schools and businesses as well as homes. Homes close to St Stephen's Church include some older properties, and walls and floors in older homes can move, and sealant and grout show it first.
Lewisham is about 3 miles west of Eltham, in Greater London. Every kind of property in Lewisham can book us for remedial sealant. Every job comes with our one-year guarantee. Our Greater London coverage runs to 764 places, Lewisham among them.
Postcode districts we cover here for remedial sealant: SE13, SE8 and SE6. We cover properties on Station Road, Lewisham High Street and Lewis Grove and the roads around them. Lewisham is on the B220, which makes it straightforward to reach. We also cover the places around Lewisham: Ladywell (1 mile south-west), St Johns (1 mile north-west), Hither Green (1 mile south-east), Blackheath (1 mile north-east) and Lee (1 mile south-east). We also work in nearby towns such as London (4 miles north-west), City of Westminster (7 miles north-west), Marylebone (7 miles north-west), Kensington (9 miles west), St Pancras (6 miles north-west) and Shoreditch (5 miles north-west).
Landmarks near Lewisham
We work in homes and buildings around St Joseph's Academy, Ladywell Fields and The Watch House. Lewisham has its own railway station: Lewisham station. Other landmarks nearby include Greenwich Castle (1.2 miles north) and Fan Museum (1.2 miles north). Not far away are Knight's Hill and Brookmill Road Local Nature Reserve.
FAQs for Lewisham
Can worn sealant in a flat in Lewisham cause a leak downstairs?
Yes, it can. Water that gets past failed sealant or cracked grout can run under the bath or tray and show up on the ceiling below. Replacing the sealant and grout before that happens is much less trouble than repairing a neighbour’s ceiling.
Is parking an issue for remedial sealant in Lewisham?
Parking in Lewisham, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.
Can you reseal a split movement joint?
Yes. The depth is set with backing so the sealant only bonds to the two sides.
Do you cover Lewisham?
We do. Our applicators work in Lewisham, and the service is the same as everywhere else.
Is remedial work guaranteed?
Yes, for 12 months. If we have pointed out another problem, getting it fixed helps the new joint last.
Can you quote for more than one area?
Yes, we can. Several rooms, windows or areas can go on one quote.
Where are you based?
Our base is Crawley, with over 20 years’ experience. We work across South East England, London and Scotland.
Will the old sealant be removed?
Yes, always, and completely. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
Quotes for remedial sealant in Lewisham
Jobs vary more than people expect. What affects the quote:
- Mould in or behind the old joints
- How much old sealant there is and how hard it is to remove
- Whether the work is at height
- The number and length of the joints
Every job is a little different, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all make a difference, and we’ll explain the quote if you ask.
What we need to know
To help us quote quickly, let us know:
- How we’d reach the joints
- How many joints, rooms or windows are involved
- If it’s domestic, commercial or a hotel
- Any previous sealing or DIY work
For a quick quote, get us on the phone, or email us if that’s easier. Describe what needs sealing and we’ll talk you through the work and send you a clear quote.
Landlord and commercial work in Lewisham
Housing providers, facilities teams and property managers book us too in Lewisham and across Greater London. Several sites can go on one quote.
Hotels need rooms back in use, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.
When to call us in Lewisham
How a joint is built matters as much as the product. Sealant packed too deep, or stuck to the back of the joint as well as the sides, cannot stretch, so it tears when the joint moves. Backing rod or bond-breaker tape prevents it.
The problems people generally mention when they call include:
- Torn expansion joints
- A second bead peeling off the first
- A shower that leaks however often it’s resealed
- Thick, messy sealant smeared over tiles
As a London address, Lewisham can be tricky for parking: let us know about parking bays, permits or a driveway.
Questions to ask before you book
- Which sealant they’ll use, and why
- How hidden problems are handled
- What the cure time is
- Which colour the sealant will be
How it works
We work through the job in order: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours for a typical bath or shower, longer where several layers have been applied and we leave things clean and tidy. In Lewisham, 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.
- We protect the surfaces around the joint.
- The botched or failed sealant is cut away completely.
- 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.
Preparing for the visit
- Mention any leaks or damp you’ve noticed
- Tell us about access, such as stairs, a lift or high-level joints
- Clear the area around the work
How to get a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. Whenever you are ready, ring 0345 464 0079 or drop us an email.
Related advice
When something else is needed
We’d rather tell you now than do work that will not last, so here’s what sealant can’t put right:
- Water damage behind tiles that needs a tiler
- Leaks from a shower valve, waste or pipework (a plumber’s job)
- A tray or bath that’s cracked
If you are not sure, just phone 0345 464 0079 or drop us an email and we will give you a straight answer before booking.
Surfaces we seal
- Leaking tray & enclosure joints
- Expansion joints
- Botched or over-sealed joints
- Mouldy bath & shower sealant
- Failed movement joints
- Shrunken worktop sealant