Greater London · England
Crossness Remedial Sealant
Remedial sealant for Crossness and the surrounding area: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Wide, uneven beads that look worse than the old ones
- Sealant that came away because the surface wasn’t prepared
- Torn expansion joints
Landlord and commercial work in Crossness
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
We also work for property managers and facilities teams in Crossness and across Greater London. Several sites can be quoted together.
Remedial sealant in Crossness, done properly
Remedial jobs in Crossness usually fall into a few patterns: sealant over sealant, mould under the bead, leaks that come back and movement joints that have split. Each is stripped back and done again properly. Typical jobs include products that weren’t meant for the joint and worktop sealant that has shrunk and split, on expansion joints, shrunken worktop sealant and failed movement joints.
Across London, a large share of homes are flats, conversions or mansion blocks, so a bathroom is often directly above a neighbour’s ceiling. In Crossness, that is a good reason to put tired sealant and grout right early.
Our work is backed for twelve months.
- Where
- Crossness (SE2, SE28, DA18)
- Region
- Greater London
- Guarantee
- A year, on every job
- Quote
- A clear price before work begins
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
What we cannot put right
Honest advice matters more to us than a booking, so here’s what sealant cannot fix:
- Sealant in an older building that needs testing for asbestos first
- A tray or bath that’s cracked
- Water damage behind tiles that needs a tiler
If you are not sure, just ring 0345 464 0079 or send us an email and we will give you a straight answer.
Where we work in Crossness
- Expansion joints
- Leaking tray & enclosure joints
- Botched or over-sealed joints
- Shrunken worktop sealant
- Mouldy bath & shower sealant
- Failed movement joints
Crossness questions
I let a flat near Abbey Wood station. Can you help?
Yes, landlords and agents are among the people we work for. Just ring 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear price.
Is parking a problem for a job in Crossness?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. The visit is then planned around what’s available.
Is remedial work guaranteed?
Yes. Remedial work carries the same 12-month guarantee as all our work.
Does someone need to be in?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
Which products do you use?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.
Do you come to Crossness?
Yes. We’re based in Crawley and work across South East England, London and Scotland.
Someone resealed my shower and it’s leaking again. Can you help?
Yes. All the sealant comes out, we find out why it failed, and the joint is resealed properly.
Will there be a smell?
Some sealants have a smell while they cure, which fades as it sets. Opening a window helps.
Do you need remedial sealant in Crossness?
All sealant wears out eventually. Mould grows into the silicone, the surface hardens and the bead shrinks, especially in damp, poorly aired rooms. Then the only fix is removal and a new bead.
Any of these means the joints need attention:
- Dark patches showing through the sealant
- A shower that leaks however often it’s resealed
- Sealant that came away because the surface wasn’t prepared
- Kitchen joints letting water behind the worktop
For site and facilities teams at buildings such as St John Fisher Catholic Primary School, its toilets, changing areas and kitchens need their sealant renewed like any other building’s.
What your quote should include
- Whether VAT is included
- What guarantee comes with the work
- Which colour the sealant will be
- Who does the work, and how experienced they are
How to look after the new joints
Simple care keeps the joints in good condition. We recommend:
- Check ceilings under showers for marks
- Find out why the sealant failed first
- Deal with small splits early
- Never fill a movement joint with mortar or grout
Give the new sealant its full cure time: follow the cure time we give you.
Warning signs: sealant lifting at the ends, a second bead visible on top of the first, black mould under the silicone, or stains below a bathroom. Any of them means it’s time for remedial work.
Bathrooms and kitchens in Crossness
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. London has hard water, which leaves limescale on sealant, grout and taps, and it has to be cleaned off before new sealant goes in.
For landlords with property near Abbey Wood station, botched sealant from a previous quick fix is easier to strip out between tenants. If you live in an older home near Church of the Cross, older homes can move a little, which is hard on rigid grout and tired sealant.
Crossness is about 2 miles north-west of Erith, in Greater London. Our applicators cover remedial sealant for homeowners, landlords and businesses in Crossness and nearby, as part of our work across Greater London. Across Greater London, we cover 764 places, Crossness among them. Our London page covers work nearby (10 miles or so).
Jobs for remedial sealant in SE2, SE28 and DA18 is quoted and booked the same way as anywhere else. We cover properties on Kale Road, Haldane Road and Seacourt Road and the roads around them. Crossness sits on or near the A2016, which makes travel easy. If you are just outside Crossness, we cover Thamesmead (1 mile north-west), Dagenham Dock (1 mile north), Barking Riverside (2 miles north-west), Hornchurch Marshes (2 miles north-east) and Dagenham Green (2 miles north). Larger places within reach include London (10 miles west), City of Westminster (12 miles west), Marylebone (12 miles west), Kensington (14 miles west), St Pancras (11 miles west) and Shoreditch (9 miles west).
Local landmarks in Crossness
Locally, jobs take us to homes and businesses close to Lesnes Abbey Woods, Harris Garrard Academy and Belvedere Working Mens Club pub and the streets around them. The closest station to Crossness is Abbey Wood station, about 0.8 miles south-west. A little further out are Erith and District Hospital (2.1 miles south-east) and Gallions Reach Shopping Park (2.4 miles west). The countryside around Crossness includes Crossness Nature Reserve.
What the job involves on each surface
Mouldy bath & shower sealant
Mould that has grown into silicone does not clean out for good. All of it comes out, and the joint is treated and dried ahead of a new anti-fungal bead.
Leaking trays & enclosures
If the tray is cracked, or the leak is from the valve or waste, sealant won’t fix it. We will tell you what we find.
How it works
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours for most joints, depending on how much old sealant has to come out and we leave things clean and tidy. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Crossness. It helps if you can point us to a visitor permit or a bay close to the door.
- Surrounding tiles, trays and frames are protected first.
- 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.
- We give you the cure time and explain what caused the failure.
How to prepare
- Plan for the work area to be out of bounds to pets and children
- Mention any parking rules near the property
- Let us know if you’ve seen damp or leaks
How to get a quote
For a quick quote, get us on the phone, or email us if that is easier. Describe what needs sealing and we will explain what’s involved and give you a clear quote.
Read more
DIY versus a professional finish
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions.
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.