Greater London · England
Upper Edmonton Floor Joint Sealing
Floor joint sealing across Upper Edmonton and nearby, with old sealant always removed completely.
- Gaps at thresholds between rooms
- Perimeter joints in tiled floors filled with grout
- Skirting that has pulled away from the floor
About our floor joint sealing in Upper Edmonton
Wet-area floor joints keep water out of the gap behind skirting and plinths. We seal them with a flexible, water-resistant sealant so water and dirt can’t get in. We work on thresholds, commercial floors and tiled floors, and common reasons people get in touch are dirt and water collecting in open floor joints and cracked grout where a tiled floor needs a movement joint.
Shops, offices and commercial units across London have hard-wearing floors with movement joints that need resealing as they wear, and new homes need their plot mastic finished properly before handover, in Upper Edmonton and beyond.
Big or small, it’s backed by our one-year guarantee in Upper Edmonton and across Greater London.
- Where
- Upper Edmonton (N18, N9, N17)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Leave it or put it right?
Water that gets past a floor joint can damage the floor beneath. Dealing with it early keeps the repair to the joint. Converted houses in London often have a bathroom above someone else’s living room, 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 for homes in Upper Edmonton.
The cost reflects the work involved, not a rough estimate. That is why we ask about the job first and agree the price before starting.
Why book with us
- Anti-fungal sanitary silicone in wet areas
- We never seal over old sealant
- A choice of colours where the product allows
- Colour picked to suit the job
Take a look at our cost guide or customer reviews.
When it is not the sealant
New sealant can’t fix everything, and we will tell you before we start. Sealant won’t put right:
- Subfloor problems that need a flooring contractor
- Movement too big for a sealant joint
- Concrete repairs beyond the joint
If in doubt, ring 0345 464 0079 or drop us an email and we will say what we think.
Surfaces we seal
- Skirting boards
- Thresholds
- Concrete floor joints
- Wet room & bathroom floors
- Tiled floors
- Commercial floors
How it works
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. In a London area like Upper Edmonton, the main things to plan are parking and access: let us know about parking, the floor we will be working on and any lift or shared entrance.
- First we check the joint and the floor and agree which sealant suits it.
- Old caulk, grout or sealant is removed from the joint.
- The joint is cleaned, vacuumed and backed where depth needs controlling.
- The sealant goes in, chosen for the floor and coloured to suit it.
- We tool the joint neatly and tell you when it can be walked on and cleaned.
How to prepare
- For indoor joints, keep the area dry beforehand if you can
- Clear the area around the work
- Keep pets and children clear of the area while we work
Get a quote
To get a quote, call 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. You’ll have a clear quote before we start.
Read more
How to look after the new joints
How long the joints last depends on use and care. Here’s what we suggest:
- Avoid caulk in bathrooms and kitchens
- Check the sealant is paintable before decorating
- Get cracks along tile grout lines looked at early
- Check skirting joints after the heating season
Don’t paint over silicone. If you plan to paint, we will use a paintable product.
Cracks along tile grout lines come back unless the movement is dealt with. A flexible joint added early helps protect the tiles themselves.
What floor joint sealing looks like in Upper Edmonton
Much of London’s new housing is flats in larger 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 do not all move the same way. The joint at the skirting or threshold has to allow for that.
As a London address, Upper Edmonton can be tricky for parking: tell us about permits, visitor bays or off-street space when you book. Managing a site like St John and St James CofE Primary School? Then floor joints in corridors, halls and entrances take heavy wear and need resealing before the edges break up. Rented homes near Silver Street station change hands often, and open skirting and floor joints collect dirt and water, so seal them while the property is empty.
Upper Edmonton is about 1 mile south of Edmonton, in Greater London. Every kind of property in Upper Edmonton is covered for floor joint sealing. Every job comes with our 12-month guarantee. Upper Edmonton is one of 764 towns and villages in Greater London where we work for floor joint sealing. Our London page covers work nearby (8 miles or so).
We cover every part of N18, N9 and N17 for floor joint sealing. You will find streets such as Bull Lane, Park Lane and York Road, all of which we cover. We also cover the places around Upper Edmonton: Northumberland Park (1 mile south-east), Edmonton (1 mile north), Picketts Lock (2 miles north-east), South Chingford (2 miles east) and Winchmore Hill (2 miles north-west). We also work in nearby towns such as London (8 miles south), City of Westminster (8 miles south-west), Marylebone (8 miles south-west), Kensington (10 miles south-west), St Pancras (6 miles south) and Shoreditch (6 miles south).
Around Upper Edmonton
Typical jobs here are in homes near Pymmes Park, Tottenham University Technical College and London Academy of Excellence Tottenham. Upper Edmonton has its own railway station: Silver Street station. A little further out are North Middlesex University Hospital (within half a mile west) and Broomfield House Museum (2.2 miles west). Open spaces near Upper Edmonton include Pole Hill and Highams Park Lake.
How we quote for floor joint sealing
We quote each job individually. These are the things that affect it:
- How easy the joints are to reach
- Working hours on commercial sites
- The amount of work
- Which sealant suits the joint
Leaving a failed joint normally makes the job bigger, not smaller. If you’re unsure, call 0345 464 0079 or drop us an email and we’ll give you an honest view and a quote.
Helping us quote
What to tell us when you ask for a quote:
- Where the job is, and your postcode
- The rough size of the job
- The problem you’ve noticed
- If someone has resealed it before
There’s no standard price list, because every job is different. Instead, we give you a clear price for your job. To arrange one, ring 0345 464 0079 or email us.
Questions from Upper Edmonton
Is parking an issue for floor joint sealing in Upper Edmonton?
Parking in Upper Edmonton, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot.
Do you cover Upper Edmonton for floor joint sealing?
Yes. Our work covers London and the South East, and Upper Edmonton is part of that. You can phone 0345 464 0079 or drop us an email and let us know what needs doing.
Where is Mr Mastic based?
Our base is in Crawley, West Sussex, and we work across South East England, London and Scotland.
Do you take out the old sealant first?
Yes, every time. New sealant won’t bond properly to old, so any old material comes out before anything new goes in.
Can you seal where the floor meets the bath panel?
Yes. We cut out any old sealant or caulk and reseal with flexible silicone in a colour to suit.
Is the work guaranteed?
Yes, for a year. If there’s a problem with our work in that time, tell us and we will put it right.
Do you offer different sealant colours?
In most cases you can choose. We will explain which colours are available and agree one before any work starts.
Why not just use caulk?
Only on dry joints that don’t move. Caulk cracks as the floor moves. A flexible sealant lasts longer there.
For landlords and businesses
If you manage several properties in or around Upper Edmonton, several properties can be quoted together. Just tell us the addresses and what each one needs.
Housing providers, facilities teams and property managers book us too in Upper Edmonton and across Greater London. Several sites can be quoted together.
Nearby places to Upper Edmonton
What else we do in Upper Edmonton
How the job changes by surface
Concrete floor joints
Old filler, dust and debris are cleaned out of the joint first. Backing goes in where the depth needs controlling.
Thresholds
Threshold joints get a lot of feet, so the sealant has to be tough as well as flexible and neatly finished.