Greater London · England
Crook Log Floor Joint Sealing
We cover Crook Log for sealing skirting-to-floor joints, tiled floor movement joints and concrete floor joints. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Rigid edge joints in tiled floors
- Chipped and open joints in warehouse floors
- Floor edges that trap water and grime
Floor joint sealing in Crook Log
In kitchens and bathrooms, the joint where the floor meets a bath panel, plinth or skirting takes mop water every day. We seal them with a flexible, water-resistant sealant and stops dirt collecting. If you’re dealing with cracked grout where a tiled floor needs a movement joint and rigid edge joints in tiled floors, we can help, on skirting boards, concrete floor joints and wet room & bathroom floors alike.
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 Crook Log and beyond.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we’ll put it right.
- Where
- Crook Log (DA7, DA6, DA16)
- Wider area
- Greater London
- Guarantee
- A year, on every job
- Quotes
- A clear price before work begins
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Crook Log: your questions answered
I let a flat near Bexleyheath station. Can you help?
Yes, rental work is part of what we do. Just call 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear quote.
Is Crook Log in your area for floor joint sealing?
Yes. We work across London and the South East, and Crook Log is part of that. Just call 0345 464 0079 or send us an email with a few details of the job, and we will give you a clear price.
Do you guarantee your work?
Yes, always. There’s a 12-month guarantee on every job, large or small.
My floor grout keeps cracking in a line. Can you help?
Often, yes. We replace the grout along a suitable line with flexible sealant coloured to suit. Loose or cracked tiles need a tiler first.
How long does the job take?
That depends on the amount of work, but most jobs take a few hours, depending on the length of joint. We will give you a better idea when we quote.
Do you use a paintable sealant?
On joints you want to paint, yes. Silicone doesn’t take paint, so tell us your plans.
What causes gaps between the floor and skirting?
Movement from drying timber and settling floors. Rigid fillers split, so we use a flexible sealant.
Do you take out the old sealant first?
Yes. All of the old material is cut out and the joint cleaned before applying anything new.
Floor joint sealing in Crook Log: local notes
Many of London’s new homes are flats in bigger 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 each moves in its own way. That’s why the skirting and threshold joints need a flexible seal.
If you look after a church, hall or community building such as Trinity Baptist Church, joints in its floors, skirtings and thresholds need resealing as they wear. For site and facilities teams at buildings such as Crook Log Primary School, floor and threshold joints in busy corridors wear quickly and are best resealed early.
Crook Log is about 3 miles south-east of Plumstead, in Greater London. Every kind of property in Crook Log is covered for floor joint sealing, old or new, large or small. The work is guaranteed for a year. Our Greater London coverage runs to 764 places, and Crook Log is one of them. There’s also a page for London, roughly 10 miles from Crook Log.
Our applicators cover all of the DA7, DA6 and DA16 postcode area for floor joint sealing. If you need floor joint sealing at a property on Bean Road, Lion Road and Alers Road or a nearby road, our applicators can take on the job. Close by, we work in Upton (1 mile east), Bexleyheath (1 mile east), Welling (1 mile west), Blendon (1 mile south) and Bexley (1 mile south). Larger places within reach include London (10 miles west), City of Westminster (13 miles west), Marylebone (12 miles west), Kensington (14 miles west), St Pancras (11 miles north-west) and Shoreditch (10 miles north-west).
What’s near Crook Log
We work in homes and buildings around Danson Park, St Columba's Catholic Boys' School and The Crook Log Public House. Crook Log has its own railway station: Bexleyheath station. A little further out are Bexley Museum (1.7 miles south-east) and Broadway Shopping Centre (0.9 miles east). Open spaces near Crook Log include Summer Hill and Wansunt Pit.
Can I do it myself?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
What we’re called out for in Crook Log
New floors settle once they’re in use. Gaps at the edges appear in the first year or so and anything rigid cracks.
The most common problems we see are:
- Rigid edge joints in tiled floors
- Worn sealant at door thresholds
- Dirt and water collecting in open floor joints
- Cracked grout where a tiled floor needs a movement joint
Letting a property close to Bexleyheath station? Then a tidy floor and skirting joint helps a rental look ready for the next tenant.
Questions to ask before booking
- How the colour is chosen
- Are they insured?
- Which sealant they’ll use, and why
- Whether VAT is included
For landlords and businesses
Landlords and agents in Crook Log can book us as well as householders. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Places near Crook Log
More services for Crook Log
Why act early in Crook Log
Waiting until the next redecoration can mean a winter of draughts and dirt in the gaps. Sealing them now is a short job. Damp from a failed joint spreads quietly in older London brickwork and timber, and by the time it shows on a wall or ceiling in Crook Log, the repair is bigger than the sealant job would have been.
The cost depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. You’ll have a clear quote before any work starts.
Why choose Mr Mastic in Crook Log
- An ARBOMaster approved applicator
- Experience in homes, commercial sites and hotels
- We leave the area clean and tidy
- Full insurance on every job
How the job changes by surface
Commercial floors
In commercial buildings, we can plan floor joint work around opening hours. We can arrange out-of-hours work.
Wet room and bathroom floors
Wet room floors rely on sound joints at the walls. We reseal it with a flexible silicone suited to wet areas and we’ll say if the problem looks like more than the joint.
Aftercare tips
Looking after new joints is easy:
- Mark off resealed joints in warehouses
- Vacuum floor joints regularly to stop grit building up
- Use furniture pads near skirting
- Avoid sloshing water against skirting
Check the joints after the first winter. Small gaps at the ends can be touched up.
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.
What happens on the day
When we get to you, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. Most jobs then take a few hours for most rooms, longer for large commercial floors. In a London area like Crook Log, 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.
- We look at the gap and the floor type and agree the right sealant.
- We take out any old caulk, sealant or grout along the line.
- The joint is cleaned, vacuumed and backed where depth needs controlling.
- We apply a flexible sealant, or a floor-joint product on concrete, in a suitable colour.
- The joint is tooled to a neat finish and we tell you when it can take feet and a mop.
Getting ready for the visit
- Let us know about earlier repairs to the joints
- On commercial sites, let us know about site rules
- For indoor joints, keep the area dry beforehand if you can
Get a quote
We don’t publish a price list, because every job is different. Instead, your job gets its own clear quote. To arrange one, phone 0345 464 0079 or email us.