Greater London · England
Remedial sealant & repairs in Crystal Palace, Greater London
Removing failed, mouldy or leaking sealant and putting it right for homes and businesses in Crystal Palace and across Greater London. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- A second bead peeling off the first
- Leaks that keep coming back after resealing
- Caulk or the wrong sealant used in a wet area
What we do, step by step
There’s no need to move everything out before we come, only the area right around the joints. We protect the rest, and the job takes a few hours for most joints, depending on how much old sealant has to come out for a typical job. In Crystal Palace, flats, stairs and shared entrances are part of the routine. Mention any building rules, key holders or managing agents when you book.
- We protect the surfaces around the joint.
- Every layer of failed sealant is stripped out.
- The joint is degreased and checked for movement and leaks.
- New sealant goes in once the joint is dry, and is tooled smooth.
- You get the cure time and our view on why the joint failed.
Preparing for the visit
- Mention any sign-in or site rules at work premises
- Let us know about stairs, lifts or work at height
- Mention if the joints have been sealed before
Get a quote
Getting a quote is simple: let us know what needs doing and where. Photos by email help us understand the job, and we’ll come back to you with a quote.
Read more
Remedial sealant in Crystal Palace
In Crystal Palace, as anywhere, remedial jobs tend to look alike: over-sealed joints, hidden mould, repeat leaks and split movement joints. Each is stripped back and done again properly. If you’re dealing with decorators’ caulk around a bath or shower and over-sealed joints coming away, we can put it right, whatever the surface.
Hard London water leaves limescale on sealant, grout and taps alike. In Crystal Palace, remedial sealant is as much about a room looking cared for as about keeping water out.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we will sort it.
- Where
- Crystal Palace (SE19, SE20, SE26)
- Wider area
- Greater London
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
When something else is needed
We will always be straight with you, so here’s what sealant cannot fix:
- A tray or worktop that needs refixing first
- Old mastic in a building from before 2000 that should be checked for asbestos before it’s disturbed
- A cracked shower tray or bath (that needs repair or replacing)
Not sure which it is? You can ring 0345 464 0079 or send us an email and we will tell you honestly before booking.
Surfaces we seal
- Leaking tray & enclosure joints
- Shrunken worktop sealant
- Expansion joints
- Failed movement joints
- Botched or over-sealed joints
- Mouldy bath & shower sealant
What the job involves on each surface
Mouldy bath & shower sealant
Where mould keeps coming back, ventilation is generally part of the cause. Along with resealing, we will mention if the room needs better ventilation.
Worktops & kitchens
Kitchen joints often have grease and cleaning residue deep in them, so we spend extra time cleaning.
Questions from Crystal Palace
Could a tired shower seal in my Crystal Palace flat affect the neighbours below?
Yes, and the first sign is often a stain on the ceiling below. A proper reseal before the leak starts is the easy fix.
Do you take on hotel work around Crystal Palace?
Yes, hotels and guest houses are among the places we work. Rooms can be done a few at a time, so the building stays open.
What if the leak is not the sealant?
That’s why we look for the cause first. If we find the leak is elsewhere, we tell you before going further.
How much does remedial sealant cost in Crystal Palace?
Every job is different, so each one gets its own quote. To get one, call 0345 464 0079 or drop us an email with a short description of the job.
Will there be a smell?
Sometimes, a little. It fades as the sealant cures, and ventilation helps.
What sealant do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
My shower still leaks after a reseal. Can you sort it?
Yes. All the sealant comes out, we find out why it failed, and the joint is resealed properly.
Where do you work from?
We are a Crawley-based firm. Our area covers South East England, London and Scotland.
Landlord and commercial work in Crystal Palace
Letting agents often deal with us directly. Tell us the address, the job and how access works and we’ll give you a quote.
We also work for property managers and facilities teams in Crystal Palace and across Greater London. We can quote a run of properties together.
Remedial sealant in Crystal Palace: local notes
In a London flat, water from a failed bath or shower seal can reach the neighbours below, which is why it’s worth fixing early. Crystal Palace 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.
Crystal Palace is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book. If you look after a building such as Crystal Palace 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.
Crystal Palace is about 2 miles north-east of Thornton Heath, in Greater London. Whether you’re in the middle of Crystal Palace or further out, we cover remedial sealant for every kind of property. Our Greater London coverage runs to 764 places, Crystal Palace among them. We also work in London, around 6 miles away.
All of SE19, SE20 and SE26 is covered for remedial sealant. Remedial sealant is available to properties on Tudor Road, Colby Road and Church Road. Nearby, we also carry out remedial sealant in Anerley (1 mile south), Penge (1 mile south-east), Gipsy Hill (1 mile west), Upper Norwood (1 mile west) and Sydenham (1 mile north-east). We also work in nearby towns such as London (6 miles north), City of Westminster (7 miles north-west), Marylebone (7 miles north-west), Kensington (8 miles north-west), St Pancras (8 miles north) and Shoreditch (7 miles north).
Near you in Crystal Palace
Locally, jobs take us to homes and businesses close to The Grape & Grain pub, Crystal Palace Park and Sydenham High School. Crystal Palace has its own railway station: Crystal Palace station. Nearby you’ll also find Greenwich Castle (5 miles north-east) and Whitgift Centre (3.3 miles south-west). The countryside around Crystal Palace includes Dulwich Upper Wood and Knight's Hill.
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. A few tips:
- Report a tray that rocks or a worktop that lifts
- Keep an eye on the ceiling below the bathroom
- Air the bathroom so the sealant can dry
- Act on a lifting corner straight away
If the joint ever needs renewing, have it cut out, not sealed over. New silicone does not bond to old, so the old bead should always come out first.
A split movement joint lets rain into walls and floors, and left long enough, the edges of the joint can crumble. A joint with sound edges is far easier to reseal.
DIY sealant or a professional job?
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Signs you need remedial sealant in Crystal Palace
Water from somewhere else can ruin a good seal. A leaking valve, a failed waste or cracked grout feeds water behind the bead, and the sealant lifts or goes mouldy from underneath.
The most common problems we see are:
- Gaps opening along the back of the worktop
- Sealant peeling off a dusty or damp surface
- Decorators’ caulk around a bath or shower
- Leaks that keep coming back after resealing
For landlords with property near Crystal Palace station, failed or mouldy sealant is worth putting right between tenancies, before it turns into a leak.
Questions to ask before booking
- What happens if they find a problem under the old sealant
- How long the guarantee is
- What the quote includes, VAT included or not
- When the joint can take water or movement