Greater London · England

Floor Joint Sealing in Keston

Floor joints in Keston need attention? We cut out the old, prepare the joints and apply the right sealant, with a 12-month guarantee.

  • Threshold joints that have opened or worn
  • Floor edges that trap water and grime
  • Cracked grout where a tiled floor needs a movement joint

Floor joint sealing in Keston

Do you need floor joint sealing in Keston?

Grout is rigid, so a tiled floor with nowhere to move cracks along a grout line. Cracks often run straight along a line of joints, showing where a movement joint was needed.

Keep an eye out for these signs:

  • Gaps at thresholds between rooms
  • Floor edges that trap water and grime
  • Concrete floor joints that have broken down
  • Failed seals where bathroom floors meet baths and panels

Managing a site like Keston Church of England Primary School? Then floor and threshold joints in busy corridors wear quickly and are best resealed early.

Comparing quotes

  • How long to leave it before use
  • What the quote includes, VAT included or not
  • What preparation is included
  • What product goes in the joint

Choosing a sealant specialist

Floor joint sealing in Keston

Tiled floors can crack along the grout when there’s no room for movement. Where one is needed, we rake out the grout along the right line and replace it with flexible sealant coloured to suit the grout. We work on wet room & bathroom floors, commercial floors and skirting boards, and people most often call us about tiled floors with no room to move and perimeter joints in tiled floors filled with grout.

Across London, commercial floors have movement joints that break down under heavy foot traffic, while new homes need a neat, sound finish around frames, baths and kitchens before handover, in Keston and beyond.

You get a 12-month guarantee, the same in Keston as everywhere else we work.

Place
Keston (BR2)
Wider area
Greater London
Cover
A year, on every job
Price
Quoted before any work starts
Telephone
0345 464 0079
Page updated
26 October 2026
The Mr Mastic team in navy uniforms in front of three Mr Mastic vans

Can I do it myself?

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 biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.

How the visit works

Once we are on site, we compare the joints with what we discussed. 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 Keston, the main things to plan are parking and access: tell us about permits, visitor bays or off-street space, which floor we’re working on and whether there’s a lift.

  1. We look at the gap and the floor type and agree the right sealant.
  2. We take out any old caulk, sealant or grout along the line.
  3. The joint is vacuumed clean, with backing fitted wherever depth matters.
  4. The sealant goes in, chosen for the floor and coloured to suit it.
  5. We tool the joint neatly and tell you when it can be walked on and cleaned.

Before we arrive

  • Mention any parking rules near the property
  • Let us know about stairs, lifts or work at height
  • Clear items away from the joints we’re working on

How to get a quote

Every job is quoted individually. Simply ring 0345 464 0079 or drop us an email and describe the job, and photos are welcome.

Get a price

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Landlord and commercial work in Keston

We regularly work with letting and managing agents. Tell us the address, the job and how access works and we’ll give you a quote.

Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.

What we can’t put right

Sealant isn’t the answer to every problem, and we will tell you before we start. Sealant will not put right:

  • Floors that are uneven or need levelling
  • Damaged concrete that needs breaking out and repairing
  • A tiled floor that needs relaying

If in doubt, phone 0345 464 0079 or email us and we will say what we think.

Where we work in Keston

  • Wet room & bathroom floors
  • Thresholds
  • Commercial floors
  • Tiled floors
  • Concrete floor joints
  • Skirting boards

FAQs for Keston

Is parking a problem for a job in Keston?

London parking needs a little planning, so let us know about permits, bays or a driveway when you book. The visit is then planned around what’s available.

Can you do floor joint sealing in Keston?

Yes, Keston is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or email us with a few details of the job, and we’ll give you a clear quote.

How long before the joint can take traffic?

Follow the cure time we give you. Feet are usually fine first, then mopping, then heavy wheels in most cases.

How much does floor joint sealing cost in Keston?

Size, access and the old material all affect the cost. Ask us for a quote and we will talk you through it.

Will there be a smell?

Some sealants have a smell while they cure, which fades as it sets. Ventilation helps.

What should I tell you?

Just the basics: where it is, what you’ve noticed and how we reach it. After that, simply ring 0345 464 0079 or send us an email.

Can you add a movement joint to a tiled floor?

Often, yes. A crack along a grout line often means the floor needs room to move. We rake out that line and seal it with flexible sealant.

Do I have to be there?

Access is agreed with you when the job is booked. For inside work, that normally means someone being in.

What happens if it’s left?

Putting new grout into a crack that keeps reappearing does not last. If the floor needs to move there, the grout will crack again. A flexible movement joint is the fix. In London conversions, one flat’s bathroom is often above another flat’s ceiling, and a slow leak from a failed seal can end up in the flat below. Putting it right early is much less trouble for homes in Keston.

No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference.

Why book with us

  • 20+ years of sealant experience
  • Full insurance on every job
  • Every job guaranteed for a year
  • Quality sealants from Arbo and Everbuild

Take a look at how sealant jobs are priced or our reviews.

New homes and floors in Keston

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. The joint at the skirting or threshold has to allow for that. Many of London’s new homes are flats in bigger developments, where snags may need reporting through the developer or the managing agent.

If you look after a church, hall or community building such as Keston Parish Church, floor and skirting joints in halls and kitchens wear like any others. For landlords with property near Hayes (Kent) station, gaps at skirtings and thresholds are worth sealing between tenancies.

Keston is about 3 miles south of Bromley, in Greater London. Across the BR2 area, our applicators can take on floor joint sealing. Our area takes in 764 places across Greater London. We also work in London, about 11 miles from Keston.

We cover every part of BR2 for floor joint sealing and the streets around it. You will find streets such as Church Road, Greys Park Close and Heathfield Road, and we cover them all. Close by, we work in Nash (1 mile west), Farthing Street (1 mile south-east), Locksbottom (1 mile north-east), Leaves Green (2 miles south) and Hayes (2 miles north-west). Further out, we also cover London (11 miles north-west), City of Westminster (13 miles north-west), Marylebone (13 miles north-west), Kensington (14 miles north-west), St Pancras (13 miles north-west) and Shoreditch (12 miles north).

Around Keston

Typical jobs here are in homes near South Park, Ravens Wood School and The Greyhound pub, among other places. The closest station to Keston is Hayes (Kent) station, roughly 1.5 miles north-west. Nearby you’ll also find Princess Royal University Hospital (1.1 miles east) and Bethlem Museum of the Mind (1.5 miles north). Open spaces near Keston include West Kent Golf Course nature reserve and Summer Hill.

Map of Keston © OpenStreetMap contributors

Keeping the joints in good condition

Looking after new joints is easy, and it makes a real difference:

  • Avoid sloshing water against skirting
  • Keep heavy wheels off new concrete joints until cured
  • Avoid caulk in bathrooms and kitchens
  • Do not slide heavy items over sealed joints

Follow the cure time before walking on or cleaning the joint. Light foot traffic is usually fine sooner than wet cleaning or wheels so we’ll give you each time.

Sealing a gap while it’s small is a quick job. Left alone, they collect dirt and widen and are harder to clean out.

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job