Greater London · England
Floor & skirting joints in Greenhill, Greater London
Sealing skirting-to-floor joints, tiled floor movement joints and concrete floor joints for homes and businesses in Greenhill and across Greater London. Fully insured, ARBOMaster approved and guaranteed for a year.
- Failed seals where bathroom floors meet baths and panels
- Tiled floors with no room to move
- Skirting that has pulled away from the floor
Questions from Greenhill
Do you work for landlords with property near Hampstead Heath station?
Yes, we work for landlords and agents. You can phone 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before work begins.
Is parking an issue for floor joint sealing in Greenhill?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. That way the visit can be planned around it.
Do I have to be there?
It depends on the job. Inside work needs someone to give us access, while outside work can sometimes be arranged differently.
Will the old sealant be removed?
Yes. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
Can you reseal concrete floor joints in an industrial unit?
Yes. Old filler is cleaned out and the joint resealed with a floor-joint product. Let us know about the traffic when you ask for a quote.
Where is Mr Mastic based?
We’re a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.
Is there any odour?
That depends on the sealant. Some smell for a while, some hardly at all, and any smell fades as they cure.
How soon can the floor be mopped?
We give you a cure time for each joint. Feet are normally fine first, then mopping, then heavy wheels, depending on the product.
About our floor joint sealing in Greenhill
Thresholds are where two floors, or a floor and a door, meet. We seal them with a flexible sealant suited to the floor finishes either side in a colour to suit. We work on thresholds, commercial floors and wet room & bathroom floors, and the jobs we see most are gaps between floors and kitchen plinths and failed joint filler in concrete floors.
From brand-new flats to converted terraces with new flooring, London has every kind of floor. Wherever a floor meets a wall, a skirting or a threshold, the joint has to allow for movement.
Every job is covered by our 12-month guarantee.
- Location
- Greenhill (NW3, NW6)
- Region
- Greater London
- Guarantee
- A year, on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Floor joint sealing in Greenhill: local notes
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. Much of London’s new housing is flats in larger developments, where snags may need reporting through the developer or the managing agent.
Managing a site like The Royal School? Then floor joints in corridors, halls and entrances take heavy wear and need resealing before the edges break up. Rented homes near Hampstead Heath station change hands often, and gaps at skirtings and thresholds are worth sealing between tenancies.
Greenhill is about 1 mile north-east of Hampstead, in Greater London. Anywhere in NW3, we cover floor joint sealing for homes and businesses. We cover 764 towns and villages across Greater London, from the larger towns to small villages.
All of NW3 and NW6 is covered for floor joint sealing. Whether your property is on Back Lane, Well Road and Ornan Road or anywhere close by, our applicators can take on the job. Nearby, we also carry out floor joint sealing in Hampstead (1 mile south-west), Vale of Health (1 mile north), West Hampstead (1 mile west), Fortune Green (1 mile west) and Haverstock (1 mile south-east). Within a short drive, we also cover London (5 miles south-east), City of Westminster (3 miles south), Marylebone (3 miles south-east), Kensington (4 miles south), St Pancras (3 miles south-east) and Shoreditch (5 miles south-east).
What’s near Greenhill
Typical jobs here are in homes near Cecil Sharp House, Fitzjohn's Primary School and King William IV Public House and the streets around them. Nearby too are South Hampstead High School (0.6 miles south) and Hampstead Heath (0.7 miles north-east). There’s a railway station in Greenhill itself: Hampstead Heath station. Well-known places in the area include New End Hospital (less than half a mile north-west) and Montfichet's Tower (4.3 miles south-east). Not far away are Belsize Wood and Parliament Hill.
Landlord and commercial work in Greenhill
Landlords and agents in Greenhill can book us as well as homeowners. Sealant work between tenants keeps a property looking cared for.
If you manage several properties in or around Greenhill, several properties can go on one quote. Just tell us the addresses and what each one needs, and photos by email help.
Common problems we fix in Greenhill
When a tiled floor has no movement joints, the grout takes the strain. Cracks often run straight along a line of joints, showing where a movement joint was needed.
It’s worth asking for a quote if you see:
- Cracked caulk along skirting in bathrooms and kitchens
- Perimeter joints in tiled floors filled with grout
- Open joints that fill with dirt
- Chipped and open joints in warehouse floors
If you look after a church, hall or community building such as Rosslyn Hill Unitarian Chapel, floor and skirting joints in halls and kitchens wear like any others.
Comparing quotes
- What guarantee comes with the work
- What the quote includes, VAT included or not
- How long to leave it before use
- Whether all the old sealant comes out first
Aftercare tips
After the cure time, these simple habits help:
- Sweep along the edges of the floor
- Don’t paint over silicone
- Have a cracking tiled floor checked before tiles break
- Walk round the room once a year and look at the edges
Lift furniture rather than sliding it over sealed joints. Dragging can tear the bead.
A gap under the skirting collects dust and lets draughts through. Sealing it keeps the room tidier and stops it getting worse.
Should I try it myself first?
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
What sealant work can’t fix
We’ll always be straight with you, so here’s what sealant can’t fix:
- Leaks from a failed tanking system
- Tiles that have lifted or broken
- Large cracks that need a surveyor
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think.
Where we work in Greenhill
- Wet room & bathroom floors
- Tiled floors
- Thresholds
- Skirting boards
- Commercial floors
- Concrete floor joints
What happens on the day
Most of a good job is in the preparation, so that’s where we spend the time. Every joint is cleaned and dried before new material goes in. All told, the work takes a few hours, depending on the length of joint. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Greenhill. It helps if you can point us to a visitor permit or a bay close to the door.
- First, the floor type, the gap and the traffic are checked.
- We remove what’s in the joint now.
- The joint is vacuumed clean and backing fitted where needed.
- We apply the sealant in a colour that suits the floor.
- We tool it neatly and tell you when it can be walked on and cleaned.
Before we arrive
- Plan for the work area to be out of bounds to pets and children
- Mention any parking rules near the property
- Mention any sign-in or site rules at work premises
How to get a quote
Want a quote for floor joint sealing? Please phone 0345 464 0079 or send us an email with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Advice
Towns and villages near Greenhill
More services for Greenhill
How we quote for floor joint sealing
We quote each job individually. This is what makes a difference:
- Whether there’s mould to deal with
- Any working-time requirements on site
- The old material and how stubborn it is
- Whether the work is at height
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. Your quote takes all of that into account.
What we need to know
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Whether it’s a home or a business
- What’s wrong with the joints now
- The rough size of the job
- Access, such as stairs, a lift or height
If you’re in Greenhill and need floor joint sealing, ring 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.