Greater London · England
Norbury Remedial Sealant
Removing failed, mouldy or leaking sealant and putting it right for Norbury, backed by a one-year guarantee. Ask us for a quote.
- A shower that leaks however often it’s resealed
- A second bead peeling off the first
- Sealant that came away because the surface wasn’t prepared
Remedial sealant in Norbury
Decorators’ caulk in a shower, bathroom silicone on a window, a rigid filler in a movement joint fails however neatly it’s applied. Out it comes, and in goes a sealant suited to the job. If you have floor or wall movement joints that have failed and black mould underneath the bead, we can help, on shrunken worktop sealant, mouldy bath & shower sealant and leaking tray & enclosure joints alike.
London homes include a lot of flats, conversions and mansion blocks, so a bathroom is often directly above a neighbour’s ceiling. In Norbury, that is a good reason to put tired sealant and grout right early.
There’s a 12-month guarantee on every job, large or small.
- Place
- Norbury (CR7, SW16, SE19)
- Region
- Greater London
- Guarantee
- A year, on every job
- Price
- A clear price before we start
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Why deal with it now?
It’s easy to scratch acrylic, enamel or an uPVC frame cutting out old sealant, and any film left behind stops new sealant sticking. Careful stripping is where most of our time goes. In a London flat, a failed joint rarely stays your problem alone: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
A failed joint rarely gets cheaper to fix by waiting. If you are not sure whether it needs doing, phone 0345 464 0079 or email us and we will give you an honest view and a quote.
Why us?
- Approved under the ARBOMaster scheme
- Sealant colour chosen to suit
- We agree the colour with you first
- Fully insured
Take a look at what affects the cost or customer reviews.
Places near Norbury
What else we do in Norbury
What we do, step by step
Once we’re on site, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. Most jobs then take a few hours for most joints, depending on how much old sealant has to come out. In a London area like Norbury, 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.
- The failure is looked at first, so we know whether it’s sealant, movement or water from elsewhere.
- 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.
Preparing for the visit
- Keep children and pets away from the work area
- Mention any tricky access
- For indoor joints, keep the area dry beforehand if you can
How to get a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints.
Related advice
How to look after the new joints
So the new joints stay in good condition:
- Do not point over movement joints
- Look for stains below bathrooms now and then
- Clean sealant with mild products only
- Always have old sealant cut out, not covered
Leave the new joint to cure fully before it gets wet or moves: follow the cure time we give you.
If a joint has failed more than once, stop resealing it. Have someone find out why, or the next bead will go the same way.
For landlords and businesses
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements.
We work for landlords and agents as well as householders. Sealant work between tenants keeps a property looking cared for.
Questions from Norbury
I let a flat near Norbury station. Can you help?
Yes. We work for landlords and letting agents as well as householders, and several properties can be quoted together. You can phone 0345 464 0079 or drop us an email with the details for a clear quote.
Is parking an issue for remedial sealant in Norbury?
In much of London, parking needs planning: a visitor permit or a nearby bay makes the day run more smoothly.
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 I choose the sealant colour?
Usually, yes. White, clear and grey are common, and other colours are available for many products, and we agree the colour with you before work begins.
Do I need to be at home?
For indoor joints, yes, someone needs to let us in. Once we have agreed the job, you do not need to watch us work.
Someone resealed my shower and it’s leaking again. Can you help?
Yes. Repeat leaks normally come from over-sealing, movement or water getting in elsewhere, so we find that first.
What does remedial sealant cost?
We do not publish prices, because the cost depends on the job: its size, the old material, access and the product needed. You’ll get a clear quote before work begins.
Are you ARBOMaster approved?
Yes. Mr Mastic is an ARBOMaster approved applicator and we are fully insured too.
When to call us in Norbury
Joint depth matters. 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.
Most people get in touch after spotting one of these:
- Decorators’ caulk around a bath or shower
- Smears and lumps from a botched reseal
- Beads that never stuck properly
- Movement joints that have split or pulled away
Managing a site like Kensington Avenue Primary School? Then its toilets, changing areas and kitchens need their sealant renewed like any other building’s.
What to look for in a quote
- Whether VAT is included
- How the joint is cleaned and prepared
- What the cure time is
- Whether all the old sealant comes out first
Should I try it myself first?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Norbury homes and their sealant
In a London flat, water from a failed bath or shower seal can reach the neighbours below, so tired sealant is best dealt with early. There are hotels and other places to stay in and around Norbury. As well as homes, we work in hotel bathrooms, where resealing and regrouting can be done room by room.
Norbury is in London, so parking needs planning: let us know about parking bays, permits or a driveway. In the older streets around St Oswald, walls and floors in older homes can move, and sealant and grout show it first.
Norbury is about 1 mile north of Thornton Heath, in Greater London. Anywhere in CR7, our applicators can take on remedial sealant. Our Greater London coverage runs to 764 places, Norbury among them. You can also see our page for London, about 6 miles away.
Work in CR7, SW16 and SE19 works the same way as everywhere else we cover. Streets in the area include Green Lane, Croft Road and Downs Road, all of which we cover. Nearby, we also carry out remedial sealant in Pollards Hill (1 mile north), Thornton Heath (1 mile south), Streatham (2 miles north-west), Streatham Park (2 miles north-west) and Mitcham (2 miles west). Within a short drive, we also cover London (6 miles north), City of Westminster (8 miles north), Marylebone (8 miles north), Kensington (7 miles north-west), St Pancras (8 miles north) and Shoreditch (8 miles north).
Local landmarks in Norbury
Locally, jobs take us to homes and businesses close to Norbury Manor Business and Enterprise College for Girls, Grangewood Park and Silburn Reid, among other places. The closest station to Norbury is Norbury station, about 0.6 miles west. Nearby you’ll also find Crystal Palace Museum (1.5 miles north-east) and Croydon University Hospital (1.3 miles south). The countryside around Norbury includes Knight's Hill and Biggin Wood.
What affects the quote in Norbury
We quote each job individually. This is what makes a difference:
- How many areas need sealing
- The product the joint needs
- The size of the job
- Access and height
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs, along with when we can work on site. Ask us for a quote and we’ll explain what it covers.
What we need to know
What to tell us when you ask for a quote:
- If it’s domestic, commercial or a hotel
- Any access issues, like height or stairs
- The address or postcode of the job
- If someone has resealed it before
We quote each job on its own, so start by telling us what you need. Simply call 0345 464 0079 or drop us an email and describe the job.