Greater London · England
Floor Joint Sealing in Barnet
Floor joint sealing in Barnet from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Caulk that has cracked where the floor moves
- Grout cracking in a straight line across a floor
- Floor edges that trap water and grime
Floor joint sealing in Barnet, done properly
A threshold joint has to cope with feet, movement and sometimes water. We seal them with a flexible sealant suited to the floor finishes either side so the joint stays neat. We work on wet room & bathroom floors, thresholds and skirting boards, and the jobs we see most are perimeter joints in tiled floors filled with grout and failed seals where bathroom floors meet baths and panels.
Much of London’s new housing is flats in larger developments. In a new development, snags are often reported through the developer or the managing agent, and failed shower seals, open skirting joints and gaps at thresholds are typical.
The work is covered for a year after we finish. If there’s a problem with it, please call 0345 464 0079 or email us.
- Where
- Barnet (EN5, EN4, N20, N11)
- Region
- Greater London
- Guarantee
- A year, on every job
- Price
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Leave it or put it right?
Putting new grout into a crack that keeps reappearing doesn’t last. If the floor needs to move there, the grout will crack again. A flexible movement joint is the fix. Converted houses in London often have a bathroom above someone else’s living room, and a slow leak from a failed seal can end up in the flat below. Putting it right early is much less trouble.
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
What you get with us
- Rated 4.9 stars on Google
- Approved under the ARBOMaster scheme
- Quality sealants from Arbo and Everbuild
- Anti-fungal silicone where joints get wet
Read how sealant jobs are priced and customer reviews.
Aftercare tips
To keep the joints looking good and working properly:
- Walk round the room once a year and look at the edges
- Act on grout cracks that run in a straight line
- Use furniture pads near skirting
- Do not fill floor joints with caulk where they move or get wet
Have a look at the joints once the heating season is over. Small gaps at the ends can be touched up.
Small gaps are quick to seal. Left alone, they collect dirt and widen.
What the job involves on each surface
Concrete floor joints
Open concrete joints chip at the edges when wheels cross them. Sealing them supports the edges and keeps dirt out.
Wet room and bathroom floors
In a wet room, the floor-to-wall joint is a key line of defence. It’s resealed with a sanitary silicone.
Floor joint sealing in Barnet: local notes
Many of London’s new homes are flats in bigger developments, where snagging may go through the developer or managing agent. Across Greater London, floors range from older suspended timber floors to concrete slabs in newer homes and commercial units, and they do not all move the same way. The joint at the skirting or threshold has to allow for that.
For landlords with property near New Barnet station, a tidy floor and skirting joint helps a rental look ready for the next tenant. If you look after a church, hall or community building such as St John's United Reformed Church, floor and skirting joints in halls and kitchens wear like any others.
Barnet is about 9 miles east of Watford, in Greater London. Anywhere in EN5, our applicators can take on floor joint sealing. Barnet is one of 764 towns and villages in Greater London where we work. Our London page covers work nearby.
Postcode districts we cover here for floor joint sealing: EN5, EN4, N20 and N11. Local streets include Station Road, High Street and Sambroke Square, all of which we cover. Barnet is on the B193 and A1081, so it’s easy for us to get to. We also cover Underhill (1 mile west), New Barnet (1 mile east), Monken Hadley (1 mile north-west), Hadley Wood (1 mile north-east) and Cockfosters (1 mile east). Further out, we also cover London (11 miles south), City of Westminster (9 miles south), Marylebone (9 miles south), Kensington (10 miles south), St Pancras (9 miles south) and Shoreditch (10 miles south-east).
Near you in Barnet
In Barnet, that means homes and buildings near Queen Elizabeth's Girls' School, The Railway Tavern and Highlands Gardens, among other places. The closest station to Barnet is New Barnet station, about 0.6 miles east of the centre. Other landmarks nearby include Barnet General Hospital (1.2 miles west) and Francis Skaryna Belarusian Library and Museum (2.1 miles south). Open spaces near Barnet include Darland's Lake and Greenhill Gardens.
DIY versus a professional finish
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
What affects the quote in Barnet
Some jobs are bigger than they look, and some smaller. The main factors:
- The type of sealant required
- Whether the work is at height
- When we can work, for business premises
- Whether old sealant or filler has to be cut out
There are no prices on our website, because the cost depends so much on the job itself. Call for a quick quote and we will talk you through it.
What to tell us for a quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- Whether it’s a home or a business
- Any previous sealing or DIY work
- Any access issues, like height or stairs
- Where the property is
If you are in Barnet and need floor joint sealing, phone 0345 464 0079 or send us an email. Tell us what the problem is and where, and you’ll get a clear quote before we start.
Barnet: your questions answered
Can you do floor joint sealing in Barnet?
Yes. We work across London and the South East, and Barnet is part of that. You can phone 0345 464 0079 or email us and tell us what needs doing, and we will give you a clear quote.
Do you work for landlords with property near New Barnet station?
Yes, we work for letting agents and landlords. Just call 0345 464 0079 or drop us an email and tell us about the property, and we will send you a clear quote.
When can I walk on the floor?
That varies with the sealant and the room. Before we leave, we tell you when it can be walked on, mopped and driven over.
Are you fully insured?
Yes. We’re fully insured, and we can confirm the details when we quote.
Is there a guarantee?
Yes. All our work carries our one-year guarantee.
Should I try DIY first?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Can you quote for more than one area?
Yes. More than one area can be quoted together.
What should I tell you?
Only a few details: the address or postcode, what’s wrong and any access issues. After that, simply phone 0345 464 0079 or drop us an email.
The process
We work through the job in order: protection first, then preparation, sealing and a tidy-up. Typically it takes a morning or an afternoon for most homes and we leave things clean and tidy. In Barnet, flats, stairs and shared entrances are part of the routine. Mention any building rules, key holders or managing agents when you book.
- 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.
- We check the joints and explain the aftercare.
How to prepare
- Mention any tricky access
- Clear the area around the work
- Tell us about any water getting in
Ask for a quote
To get a quote, ring 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. We’ll give you a clear price before any work starts.
Read more
Places near Barnet
Also in Barnet
When to call us in Barnet
A new floor or screed shrinks and settles as it dries. The edges pull away from the skirting, and rigid fillers crack.
People generally contact us after spotting one of these:
- Gaps between floors and kitchen plinths
- Skirting caulk that keeps splitting
- Cracked grout where a tiled floor needs a movement joint
- Perimeter joints in tiled floors filled with grout
For site and facilities teams at buildings such as Grasvenor Avenue Infant School, entrance and corridor floor joints take a lot of traffic.
What your quote should include
- What product goes in the joint
- Who does the work, and how experienced they are
- What insurance they hold
- What the quote includes, VAT included or not