Greater London · England
Floor Joint Sealing in Crossness
Floor joint sealing in Crossness from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Gaps at thresholds between rooms
- Grout used at the floor edge instead of sealant
- Tiled floors with no room to move
Floor joint sealing for homes and businesses in Crossness
Wet-area floor joints keep water out of the gap behind skirting and plinths. A flexible silicone seal keeps it out so water and dirt can’t get in. If you have threshold joints that have opened or worn and cracked grout where a tiled floor needs a movement joint, we can help, on thresholds, wet room & bathroom floors and concrete floor joints alike.
Much of London’s new housing is flats in larger developments. Snagging there often goes through the developer or managing agent, and failed shower seals, open skirting joints and gaps at thresholds are typical.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we will sort it.
- Where
- Crossness (SE2, SE28, DA18)
- Region
- Greater London
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
For landlords and businesses
We work for landlords and letting agents as well as homeowners. Sealant work between tenants keeps a property looking cared for before the next move-in.
Letting agents often deal with us directly. Tell us the address, the job and how access works.
How the job changes by surface
Wet room and bathroom floors
Floor joints in bathrooms take water every day. They’re sealed with a flexible, anti-fungal silicone.
Thresholds
A threshold is where floors and frames meet. A flexible sealant suits both floor finishes.
New homes and floors in Crossness
Many of London’s new homes are flats in bigger developments, where snagging may go through the developer or managing agent. Floors around Greater London run from suspended timber in older homes to concrete in newer houses and units, and they don’t all move the same way. The joint at the skirting or threshold has to allow for that.
Crossness 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 church, hall or community building such as Church of the Cross, joints in its floors, skirtings and thresholds need resealing as they wear.
Crossness is about 2 miles north-west of Erith, in Greater London. Whether you are in the middle of Crossness or further out, we cover floor joint sealing for every kind of property, from flats and houses to offices and hotels. We cover 764 towns and villages across Greater London. We also work in London, about 10 miles from Crossness.
Postcode districts we cover here for floor joint sealing: SE2, SE28 and DA18. That includes homes and businesses on Kale Road, Haldane Road and Seacourt Road and the roads around them. Main roads around Crossness include the A2016, which makes travel easy. Neighbouring places we cover for floor joint sealing include 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).
Near you 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. For rail, the closest station is Abbey Wood station, about 0.8 miles south-west of the centre. 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.
When something else is needed
To be straight with you, some problems need a different trade:
- Leaks from a failed tanking system
- Tiles that have lifted or broken
- Bouncy or failing floorboards
If you are not sure, just phone 0345 464 0079 or drop us an email and we will give you a straight answer before booking.
What we seal
- Concrete floor joints
- Tiled floors
- Skirting boards
- Thresholds
- Wet room & bathroom floors
- Commercial floors
Do you need floor joint sealing in Crossness?
When a tiled floor has no movement joints, the grout takes the strain. You’ll see a crack running along the grout, showing where a movement joint was needed.
Signs it’s time to call us include:
- Threshold joints that have opened or worn
- Open joints around bathroom floor edges
- Tiled floors with no room to move
- Skirting that has pulled away from the floor
Schools such as St John Fisher Catholic Primary School are buildings too, and floor joints in corridors, halls and entrances take heavy wear and need resealing before the edges break up.
What your quote should include
- How long to leave it before use
- How the surfaces are prepared before sealing
- Are they insured?
- What product goes in the joint
What happens on the day
When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. Most jobs then take a morning or an afternoon for most homes. 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.
- We clear the edges of the floor so the joints are easy to reach.
- Old material is removed from the joint.
- We clean and dry the edges of the joint.
- We apply a flexible sealant suited to the floor and smooth it.
- We check the joints and explain the aftercare.
Before we arrive
- Mention any sign-in or site rules at work premises
- Where the joints are inside, avoid wetting them before we arrive
- Tell us if parking is tricky
How to get a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and add photos by email if you can.
Read more
FAQs for Crossness
Do you work for landlords with property near Abbey Wood station?
Yes, rental work is part of what we do. You can call 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before any work starts.
Can you do floor joint sealing in Crossness?
Yes, Crossness is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or email us with a few details of the job, and we will give you a clear price.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status.
Where do you work from?
We’re based in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
How long does floor joint sealing take?
Most jobs take a few hours, depending on the length of joint. We’ll confirm how long when we quote.
Can new sealant go over the old?
No, and we never do. It may look fine at first, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
Can I do 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.
How do I get a quote for floor joint sealing in Crossness?
Size, access and the old material all affect the cost. Call for a quick quote and we’ll talk you through it.
How to look after the new joints
Looking after new joints is easy:
- Don’t fill floor joints with caulk where they move or get wet
- Check the sealant is paintable before decorating
- Cone off fresh joints until they’re ready
- Avoid sloshing water against skirting
Silicone sealant isn’t made to take paint. If you plan to paint, we will use a paintable product.
Concrete joints damaged by traffic get worse quickly. Early resealing helps keep the joint intact and the surface smoother.
Can I do it myself?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.