Greater London · England
Floor & skirting joints in Highgate, Greater London
Floor joint sealing across Highgate and nearby, with every bit of old sealant taken out first.
- Chipped and open joints in warehouse floors
- Open joints around bathroom floor edges
- Cracked caulk along skirting in bathrooms and kitchens
What we do, step by step
There’s no need to move everything out before we come, only the area right around the joints. We protect the rest, and the work takes a morning or an afternoon for most homes for a typical job. For a job in Highgate, parking and access are the things to plan: let us know about parking, the floor we’ll be working on and any lift or shared entrance.
- We start by checking the floor, the joint and what traffic it takes.
- Any old caulk, grout or sealant is raked or cut out.
- We vacuum out the joint and add backing where the depth needs setting.
- The chosen sealant goes in, coloured to suit the floor.
- We tool it neatly and tell you when it can be walked on and cleaned.
Getting ready for the visit
- Try not to wet indoor joints just before the visit
- Mention any tricky access
- Mention any parking rules near the property
Ask for a quote
We do not publish a price list, because every job is different. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or send us an email.
Related advice
Floor joint sealing in Highgate
Every floor moves a little, so its edges need a joint that can flex. Skirting-to-floor gaps, tiled floor joints and concrete joints are all sealed using a product that suits the floor. We work on tiled floors, skirting boards and concrete floor joints, and the jobs we see most are cracked grout where a tiled floor needs a movement joint and grout used at the floor edge instead of sealant.
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.
- Place
- Highgate (N6, N19, NW5)
- Region
- Greater London
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Looking after it afterwards
After the cure time, these simple habits help:
- Ask before painting over a sealed joint
- Lift furniture rather than dragging it across joints
- Cone off fresh joints until they’re ready
- Check skirting joints after the heating season
Lift furniture rather than sliding it over sealed joints. Dragging can tear the bead before it has fully cured.
In wet areas, an open floor joint lets water reach the subfloor. A sound seal stops that happening.
Why act early in Highgate
Water that gets past a floor joint can damage the floor beneath. Dealing with it early keeps the repair to the joint. In London conversions, one flat’s bathroom is often above another flat’s ceiling, so a small leak from tired sealant can mean a neighbour’s ceiling and a lot of disruption. Putting it right early is much less trouble.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
Why choose Mr Mastic in Highgate
- A sealant colour to suit the surroundings
- Over 20 years’ experience
- We never seal over old sealant
- Trusted Arbo and Everbuild sealants
Read how sealant jobs are priced and our reviews.
Surface by surface
Wet room and bathroom floors
Floor joints in bathrooms take water every day. They’re sealed with a flexible, anti-fungal silicone.
Tiled floors
Large or heated tiled floors need room to move. Where needed, a line of grout is replaced with flexible sealant coloured to suit.
Common questions in Highgate
Is parking an issue for floor joint sealing in Highgate?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot.
Do you cover Highgate for floor joint sealing?
Yes. Our work covers London and the South East, and Highgate is part of that. You can ring 0345 464 0079 or drop us an email and tell us what needs doing.
Do I need to be at home?
For indoor joints, yes, someone needs to let us in. Once we have agreed the job, you don’t need to watch us work.
Can sealant along the skirting be painted?
For painted skirting, we use a flexible product that can be painted. Silicone won’t take paint, so we use it where the joint stays unpainted.
Are you ARBOMaster approved?
Yes. We are approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
How do I get a quote for floor joint sealing in Highgate?
We do not publish prices, because the cost depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
Is there a guarantee?
Yes. All our work carries our 12-month guarantee.
Can I do it myself?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. If it doesn’t work out, we can redo it.
New homes and floors in Highgate
Floors around Greater London run from suspended timber in older homes to concrete in newer houses and units, and they do not all move the same way. That is why the skirting and threshold joints need a flexible seal. Many of London’s new homes are flats in bigger developments, where snags may need reporting through the developer or the managing agent.
Community buildings like Highgate United Reformed Church are part of the picture too: joints in its floors, skirtings and thresholds need resealing as they wear. For landlords with property near Upper Holloway station, a tidy floor and skirting joint helps a rental look ready for the next tenant.
Highgate is about 2 miles north-east of Hampstead, in Greater London. Jobs in Highgate get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Our area takes in 764 places across Greater London, from the larger towns to small villages.
All of N6, N19 and NW5 is covered for floor joint sealing, from the main roads to the quietest streets. If you need floor joint sealing at a property on Wood Lane, Grange Road and Talbot Road or a nearby road, our applicators can take on the job. Nearby, we also carry out floor joint sealing in Upper Holloway (1 mile south-east), Dartmouth Park (1 mile south), Lissenden Gardens (1 mile south), Crouch End (1 mile north-east) and Tufnell Park (1 mile south-east). We also work in nearby towns such as London (5 miles south-east), City of Westminster (4 miles south), Marylebone (4 miles south), Kensington (6 miles south-west), St Pancras (3 miles south) and Shoreditch (4 miles south-east).
Landmarks near Highgate
Locally, jobs take us to homes and businesses close to The Angel Inn, St Aloysius RC College and Whittington Park, among other places. For rail, the closest station is Upper Holloway station, roughly 0.9 miles south-east. Nearby you’ll also find Highgate Private Hospital (0.6 miles north-west) and Montfichet's Tower (4.4 miles south-east). Not far away are Darland's Lake and Parkland Walk.
Towns and villages near Highgate
Other services in Highgate
Work for landlords, hotels and businesses
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
DIY sealant or a professional job?
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.
What we are called out for in Highgate
A floor laid tight to the walls has no room to move. It pushes against the walls and skirting as it expands and joints fail.
Common reasons people contact us are:
- Gaps between floors and kitchen plinths
- Open joints that fill with dirt
- Grout cracking in a straight line across a floor
- Chipped and open joints in warehouse floors
Highgate is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Comparing quotes
- How the colour is chosen
- Whether they’re fully insured
- What happens if they find a problem under the old sealant
- Whether the sealant suits the joint