Greater London · England
Hither Green Remedial Sealant
Remedial sealant for Hither Green and the surrounding area: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Beads that never stuck properly
- Torn expansion joints
- Dark patches showing through the sealant
How we quote for remedial sealant
Call for a quick quote. What matters most is:
- The product the joint needs
- The number and length of the joints
- The old material and how stubborn it is
- Any working-time requirements on site
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. We take all of that into account in your quote.
Asking for a quote
Photos by email are helpful but not essential. Please mention:
- The rough size of the job
- The problem you’ve noticed
- Photos by email, if that’s easy
- Any previous sealing or DIY work
Every job is quoted individually, so start by telling us what you need. Just phone 0345 464 0079 or email us with the details, and photos are welcome.
Remedial sealant in Hither Green
A joint that keeps letting you down needs more than another bead. Send photos when you phone 0345 464 0079 or email us. Typical jobs include sealant applied over old sealant that has lifted and wide, uneven beads that look worse than the old ones, on mouldy bath & shower sealant, botched or over-sealed joints and expansion 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, and homes in Hither Green are no different.
All of our work is guaranteed for twelve months, in Hither Green and everywhere else we cover.
- Place
- Hither Green (SE13, SE12, SE6)
- Wider area
- Greater London
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
DIY versus a professional finish
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Different surfaces, different methods
Mouldy bath & shower sealant
Mould often spreads under the bead as well as through it. Once it’s all removed, the joint is treated so the new sealant starts clean.
Over-sealed & botched joints
Botched joints sometimes have damaged edges from earlier scraping. We take care not to make it worse, and point out any existing damage.
How to look after the new joints
To keep the joints looking good and working properly:
- Ask why a joint failed before redoing it
- Deal with small splits early
- Clean sealant with mild products only
- Always have old sealant cut out, not covered
If the joint ever needs renewing, have it cut out, not sealed over. New silicone doesn’t bond to old.
Mould trapped under over-sealed joints spreads unseen. By the time it shows through, the joint is well past saving.
What happens on the day
There is not much for you to do on the day. Show us the job and we’ll take it from there. The work itself takes a few hours for a typical bath or shower, longer where several layers have been applied. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. If the building has a concierge, managing agent or access rules, tell us when you book.
- First we find out how and where the joint has failed.
- All the old sealant comes out, including any layers underneath.
- Next, any mould is treated and the joint dried.
- Moving joints get backing and a flexible sealant to suit.
- We tool the joint and tell you about anything else that needs attention.
Getting ready for the visit
- Plan for the work area to be out of bounds to pets and children
- Clear items away from the joints we’re working on
- Tell us about any water getting in
Get a quote
For a quick quote, get us on the phone, or email us if that’s easier. Describe what needs sealing and we will talk you through the work before giving you a price.
Advice
What sealant work cannot fix
A few problems are outside what sealant work can do:
- Cracks in the fitting rather than the joint
- A bath, tray or worktop that moves until it’s properly fixed
- Water damage behind tiles that needs a tiler
If in doubt, ring 0345 464 0079 or drop us an email and we will say what we think before you book.
Surfaces we seal
- Mouldy bath & shower sealant
- Botched or over-sealed joints
- Leaking tray & enclosure joints
- Failed movement joints
- Expansion joints
- Shrunken worktop sealant
Your questions about remedial sealant in Hither Green
Could a tired shower seal in my Hither Green 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.
Is parking a problem for a job in Hither Green?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. That way the visit can be planned around it.
Do you work for letting agents?
Yes. As well as homeowners, we work for landlords, agents, businesses and hotels.
What do you need from me for a quote?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Will there be a smell?
It depends on the product. Some products have a noticeable smell, others very little, and any smell fades as they cure.
Where is Mr Mastic based?
Our base is Crawley. Our area covers South East England, London and Scotland.
How much does remedial sealant cost in Hither Green?
We do not publish prices, because the cost depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
When is the sealant fully cured?
Many sealants skin over quickly but take longer to cure fully. We’ll tell you how long to leave the joint before we leave.
Also in Hither Green
Remedial sealant in Hither Green: local notes
London has hard water, so limescale builds up on sealant, grout and fittings, and it has to be cleaned off before new sealant goes in. 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.
If you look after a building such as Brindishe Manor School, we reseal washrooms and kitchens in schools and businesses as well as homes. Letting a property close to Hither Green station? Then a joint that keeps failing is best fixed properly while the property is empty. In the older streets around Church of St Swithun, bathrooms in older houses have often been refitted more than once, with sealant laid over sealant.
Hither Green is about 2 miles south-east of New Cross, in Greater London. For remedial sealant in and around Hither Green, please call 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover Greater London. Our Greater London coverage runs to 764 places, and Hither Green is one of them.
Jobs for remedial sealant in SE13, SE12 and SE6 works the same way as everywhere else we cover. Streets in the area include Old Road, Manor Lane and Pascoe Road, all of which we cover. We also cover Lee (1 mile east), Ladywell (1 mile west), Lewisham (1 mile north-west), Catford (1 mile south-west) and Horn Park (1 mile east). Further out, we also cover London (5 miles north-west), City of Westminster (8 miles north-west), Marylebone (8 miles north-west), Kensington (9 miles west), St Pancras (7 miles north-west) and Shoreditch (6 miles north-west).
Around Hither Green
In Hither Green, that means homes and buildings near International Academy of Greenwich, The Edmund Halley pub and Manor House Gardens, among other places. There’s a railway station in Hither Green itself: Hither Green station. Nearby you’ll also find Lewisham Shopping Centre (0.9 miles north-west) and University Hospital Lewisham (0.7 miles west). Green spaces nearby include Brookmill Road Local Nature Reserve and Summer Hill.
Work for landlords, hotels and businesses
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.
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.