Greater London · England
Floor & skirting joints in South Street, Greater London
Floor joint sealing in South Street from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Concrete floor joints that have broken down
- Worn sealant at door thresholds
- Perimeter joints in tiled floors filled with grout
Floor joint sealing for homes and businesses in South Street
The gap under a skirting board often opens as floors and walls move with the seasons. Caulk tends to crack there, so we use a flexible sealant that moves with the floor. We work on concrete floor joints, skirting boards and tiled floors, and common reasons people get in touch are gaps opening between the floor and skirting and dirt and water collecting in open floor joints.
New flats are going up across London, many of them in larger developments. Snagging there often goes through the developer or managing agent, and shower seals that fail early, skirting joints that open up and gaps at thresholds are all common snags.
We stand behind the work with a 12-month guarantee, so you are not left on your own once the job is done.
- Where
- South Street (TN16)
- Region
- Greater London
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Why it’s worth doing now in South Street
Open joints along wet floors let water into the subfloor and behind skirting. Sealing them now keeps the problem at the surface. In a flat in South Street, failed sealant seldom stays inside your own four walls: water can reach the neighbours below, and gaps in fire-rated joints affect the whole building.
What you pay reflects the work, not a rough estimate. That is why we ask about the job first.
Why choose Mr Mastic in South Street
- We leave the area clean and tidy
- Approved under the ARBOMaster scheme
- Old sealant always removed completely
- Anti-fungal sanitary silicone in wet areas
Take a look at what affects the cost or what customers say.
Towns and villages near South Street
Also in South Street
What happens on the day
Good joint work is mostly preparation, and we do not rush it. Every joint is cleaned and dried before new material goes in. All told, the work takes a few hours for most rooms, longer for large commercial floors. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. If the building has a concierge, managing agent or access rules, tell us when you book.
- We start by checking the floor, the joint and what traffic it takes.
- We remove what’s in the joint now.
- 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.
Before we arrive
- Mention if the joints have been sealed before
- Clear items away from the joints we are working on
- On commercial sites, let us know about site rules
How to get a quote
We quote each job on its own. Just phone 0345 464 0079 or drop us an email with the details, and photos are welcome.
Related advice
DIY versus a professional finish
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Floor joint sealing around South Street
Much of London’s new housing is flats in larger developments, where snags may need reporting through the developer or the managing agent. Floors around Greater London run from suspended timber in older homes to concrete in newer houses and units, and each moves in its own way. That’s why the skirting and threshold joints need a flexible seal.
Schools such as Charles Darwin School are buildings too, and entrance and corridor floor joints take a lot of traffic. South Street is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
South Street is about 4 miles north-east of Oxted, in Greater London. Homes, rented property, offices and hotels in South Street can book us for floor joint sealing, old or new, large or small. Every job comes with our 12-month guarantee. South Street is one of 764 towns and villages in Greater London where we work for floor joint sealing. There’s also a page for London, about 15 miles away.
Work in TN16 is quoted and booked the same way as anywhere else. Neighbouring places we cover for floor joint sealing include Tatsfield (1 mile west), Force Green (2 miles south-east), Titsey (2 miles south-west), Westerham (2 miles south-east) and Moorhouse Bank (3 miles south). Further out, we also cover London (15 miles north-west), Stockwell (14 miles north-west), Orpington (6 miles north), Wimbledon (14 miles north-west), Kennington (15 miles north-west) and New Cross (13 miles north).
Landmarks near South Street
The nearest railway station is Oxted station, about 3.7 miles south-west of the centre. Well-known places in the area include Tandridge Priory (3.2 miles south). For a walk, there’s West Kent Golf Course nature reserve and Betsom's Hill.
What affects the cost of floor joint sealing
Your quote is based on your job. We take into account:
- Whether old sealant or filler has to be cut out
- The amount of work
- The product the joint needs
- Access and height
Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs. Ask us for a quote and we’ll go through it with you.
Asking for a quote
To make quoting easier, please include:
- The rough size of the job
- Whether it’s a home or a business
- Any access issues, like height or stairs
- Any previous sealing or DIY work
Asking for a quote is easy: tell us what needs doing and where and its rough size. A few pictures by email make the job easier to understand, and we’ll take it from there.
South Street: your questions answered
Do you work for landlords with property near Oxted station?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before any work starts.
Is parking an issue for floor joint sealing in South Street?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. The visit is then planned around what’s available.
Will there be a smell?
Some sealants have a smell while they cure. Ventilation helps.
Why does the gap under my skirting keep coming back?
Movement from drying timber and settling floors opens the gap. Caulk tends to crack; a flexible sealant does not.
How much does floor joint sealing cost in South Street?
Size, access and the old material all affect the cost. Call for a quick quote.
Do you seal kitchen plinths to the floor?
Yes. These joints get wet every time the floor is cleaned, so a flexible silicone is the right choice.
Do you come to South Street?
Yes. From our base in Crawley, we cover South East England, London and all of Scotland, South Street included.
Is there a guarantee?
Yes. Every job comes with our one-year guarantee.
How to look after the new joints
To keep the joints looking good and working properly:
- Keep caulk for dry, still joints only
- Check the sealant is paintable before decorating
- Vacuum floor joints regularly to stop grit building up
- Act on grout cracks that run in a straight line
Lift furniture rather than sliding it over sealed joints. Dragging can tear the bead before it has fully cured.
Cracks along tile grout lines come back unless the movement is dealt with. Adding a movement joint early can stop cracks spreading to the tiles.
Different surfaces, different methods
Tiled floors
Tiled floors need movement joints at edges and across large areas. Where needed, a line of grout is replaced with flexible sealant.
Thresholds
Thresholds between rooms meet two floors and often a door frame. A flexible sealant suits both floor finishes.
When to call us in South Street
An open floor joint fills with dirt and water. In kitchens and bathrooms, mop water gets into the gap and behind skirting and plinths.
Any of these means the joints need attention:
- Cracked grout where a tiled floor needs a movement joint
- Chipped and open joints in warehouse floors
- Skirting that has pulled away from the floor
- Rigid edge joints in tiled floors
For landlords with property near Oxted station, open skirting and floor joints collect dirt and water, so seal them while the property is empty.
Questions to ask before booking
- Which sealant they’ll use, and why
- How the surfaces are prepared before sealing
- Whether you can choose the colour
- What happens if the job turns out different