Greater London · England
Remedial Sealant in Mottingham
Removing failed, mouldy or leaking sealant and putting it right in Mottingham, with a 12-month guarantee on every job. Call for a quick quote.
- Decorators’ caulk around a bath or shower
- Movement joints that have split or pulled away
- Black mould underneath the bead
Landlord and commercial work in Mottingham
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. We can quote for more than one property at once.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
Remedial sealant in Mottingham, done properly
If a joint has been resealed and is leaking again, it’s worth a proper look. It helps to have pictures when you phone 0345 464 0079 or email us, and say how long ago it was last done. If you’re dealing with kitchen joints letting water behind the worktop and beads that never stuck properly, we can help, on leaking tray & enclosure joints, mouldy bath & shower sealant and expansion joints alike.
London homes include a lot of flats, conversions and mansion blocks, so a bathroom is often directly above a neighbour’s ceiling. That makes worn sealant and cracked grout in Mottingham more than a cosmetic job.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Place
- Mottingham (SE9, SE12, BR1)
- Region
- Greater London
- Cover
- A year, on every job
- Quote
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Signs you need remedial sealant in Mottingham
Products get mixed up: acrylic caulk in a wet area, a general-purpose sealant on a moving joint, or an acetoxy silicone on natural stone or some metals. None of them last.
Common reasons people contact us include:
- A second bead peeling off the first
- Decorators’ caulk around a bath or shower
- Gaps opening along the back of the worktop
- A shower that leaks however often it’s resealed
Letting a property close to Grove Park station? Then failed or mouldy sealant is worth putting right between tenancies, before it turns into a leak.
What your quote should include
- Are they insured?
- What happens if they find a problem under the old sealant
- Is the old sealant removed completely?
- Who does the work, and how experienced they are
How it works
Before we leave, we go over the finished joints with you and tell you how long to leave it. The work normally takes a few hours, depending on how many layers have to come out, depending on the size of the job. In Mottingham, as in most of London, parking needs a little planning. A visitor permit or a nearby bay makes the visit run more smoothly.
- We protect the surfaces around the joint.
- Every layer of failed sealant is stripped out.
- We clean and degrease the joint and look for signs of movement or water.
- Once dry, a suitable sealant is applied and tooled.
- You get the cure time and our view on why the joint failed.
How to prepare
- Move anything stored near the joints
- Tell us if parking is tricky
- Mention any tricky access
How to get a quote
Asking for a quote is easy: let us know the job and the location. Photos by email help us understand the job, and we will come back to you with a quote.
Related advice
Mottingham: your questions answered
Can parking be tricky for a visit in Mottingham?
Parking in Mottingham, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot, so mention what’s available when you book.
Could a tired shower seal in my Mottingham flat affect the neighbours below?
Yes. In a flat, water from a failed bath or shower seal has only one way to go, and that is down. A proper reseal before the leak starts is the easy fix.
What sealant do you use?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We’ll tell you what we are using and why.
Can you quote for more than one area?
Yes. Just list everything you need and we will quote it together.
Is it worth trying it myself?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
Are you insured?
Yes. Mr Mastic is fully insured.
Is there any odour?
Possibly a little. It fades as the sealant cures, and ventilation helps.
Do you guarantee remedial jobs?
Yes. You get our 12-month guarantee.
Remedial sealant in Mottingham: local notes
London has a lot of flats and conversions, and a failed shower or bath seal in one can show up on the ceiling below, which is why it’s worth fixing early. London’s water is hard, so limescale builds up on sealant, grout and fittings, and it has to be cleaned off before new sealant goes in.
Mottingham is in London, so parking needs planning: let us know about parking bays, permits or a driveway. In the older streets around Jubilee International Church, bathrooms in older houses have often been refitted more than once, with sealant laid over sealant.
Mottingham is about 1 mile south-west of Eltham, in Greater London. Whether you’re in the middle of Mottingham or further out, we cover remedial sealant for every kind of property. Our Greater London coverage runs to 764 places, and Mottingham is one of them. We also work in London, around 7 miles away.
All of SE9, SE12 and BR1 is covered for remedial sealant. That includes homes and businesses on Horley Road, Dorset Road and Albert Road and the roads around them. Close by, we work in Chinbrook (1 mile south-west), Grove Park (1 mile west), Coldharbour (1 mile east), Middle Park (1 mile north) and Horn Park (1 mile north-west). Within a short drive, we also cover London (7 miles north-west), City of Westminster (10 miles north-west), Marylebone (10 miles north-west), Kensington (11 miles north-west), St Pancras (9 miles north-west) and Shoreditch (8 miles north-west).
Landmarks near Mottingham
Around Mottingham, our work takes us to homes and buildings near Colfe's School, Chinbrook Meadows and Haberdashers' Aske's Knights Academy. For rail, the closest station is Grove Park station, about 0.7 miles west. Nearby you’ll also find Greenwich Castle (3.5 miles north-west) and Prefab Museum (1.7 miles west). Not far away are Summer Hill and The Tarn.
When it isn’t the sealant
In fairness, some problems need a different trade:
- A tray or worktop that needs refixing first
- Leaks from a shower valve, waste or pipework (a plumber’s job)
- Failed tanking or loose tiles behind the sealant
If in doubt, ring 0345 464 0079 or send us an email and we will say what we think.
Where we work in Mottingham
- Expansion joints
- Botched or over-sealed joints
- Shrunken worktop sealant
- Mouldy bath & shower sealant
- Leaking tray & enclosure joints
- Failed movement joints
How to look after the new joints
Simple care keeps the joints in good condition. Our advice:
- Have loose fittings fixed before resealing
- Don’t wait for a small gap to become a leak
- Look for stains below bathrooms now and then
- Use a soft cloth, not a scourer, on silicone
Keep the room ventilated: run the fan during and after showers, or open a window.
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.
Towns and villages near Mottingham
Other services in Mottingham
What happens if it’s left?
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. Damp from a failed joint spreads quietly in older London brickwork and timber, and once it shows in Mottingham, the repair is bigger than a sealant job.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
Why book with us
- A 12-month guarantee on all work
- Anti-fungal sanitary silicone in wet areas
- Over 20 years’ experience
- Trusted Arbo and Everbuild sealants
Take a look at how sealant jobs are priced and our reviews.
Quotes for remedial sealant in Mottingham
We quote each job individually. This is what makes a difference:
- Working hours on commercial sites
- Whether the work is at height
- The amount of work
- The number of rooms or windows
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all play a part, and we will explain the quote if you ask.
Helping us quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- Where the property is
- Photos by email, if that’s easy
- Access, such as stairs, a lift or height
- Whether it’s a home or a business
For remedial sealant in Mottingham, ring 0345 464 0079 or email us. Tell us what the problem is and where, and we will agree the price before any work begins.