Greater London · England
Gunnersbury Floor Joint Sealing
Floor joint sealing in Gunnersbury from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Grout used at the floor edge instead of sealant
- Grout cracking in a straight line across a floor
- Chipped and open joints in warehouse floors
Joints and finishes in Gunnersbury homes
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. Much of London’s new housing is flats in larger developments, where snagging may go through the developer or managing agent.
For buildings such as St Michael's Church, joints in its floors, skirtings and thresholds need resealing as they wear. For landlords with property near Gunnersbury station, gaps at skirtings and thresholds are worth sealing between tenancies.
Gunnersbury is about 1 mile south of Acton, in Greater London. Across the W4 area, we cover floor joint sealing for homes and businesses. Gunnersbury is one of 764 places in Greater London we cover for floor joint sealing. There’s also a page for London, about 8 miles away.
Here we cover the W4, W3 and TW8 postcode area for floor joint sealing. If you need floor joint sealing at a property on Kew Road, Kent Road and Power Road or anywhere close by, we can help. With the A3000 close by, Gunnersbury is simple for us to get to. Close by, we work in Strand-on-the-Green (1 mile south), Kew (1 mile south), Grove Park (1 mile south-east), Chiswick (1 mile east) and Turnham Green (1 mile south-east). Further out, we also cover London (8 miles east), City of Westminster (6 miles east), Marylebone (6 miles east), Kensington (3 miles east), St Pancras (7 miles east) and Shoreditch (9 miles east).
Local landmarks in Gunnersbury
Around Gunnersbury, our work takes us to homes and buildings near Clayton Hotel Chiswick, Kew College Prep and Ark Acton Academy and the streets around them. Also close by are Turnham Green (0.5 miles east) and Library for Iranian Studies (1 mile north). There’s a railway station in Gunnersbury itself: Gunnersbury station. Well-known places in the area include Barnes Hospital (2 miles south-east) and Livat Hammersmith (2.1 miles east). For a walk, there’s Kew Gardens Lake and Castlebar Hill.
Floor joint sealing in Gunnersbury, done properly
Concrete floors in warehouses and units have joints that take heavy wear. Each is resealed with a floor-joint product suited to what runs over it. Typical jobs include perimeter joints in tiled floors filled with grout and cracked grout where a tiled floor needs a movement joint, across tiled floors, thresholds and commercial floors.
Shops, offices and commercial units across London have hard-wearing floors with movement joints that need resealing as they wear, while new homes need a neat, sound finish around frames, baths and kitchens before handover.
Each job carries a 12-month guarantee, whatever its size.
- Place
- Gunnersbury (W4, W3, TW8)
- Wider area
- Greater London
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Nearby places to Gunnersbury
What else we do in Gunnersbury
FAQs for Gunnersbury
Is parking a problem for a job in Gunnersbury?
In much of London, parking needs planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.
Is Gunnersbury in your area for floor joint sealing?
Yes. Our work covers London and the South East, and Gunnersbury is part of that. Just call 0345 464 0079 or email us with a few details of the job, and we’ll give you a clear quote.
Why has a gap opened under my skirting?
It’s normally the floor moving: heating drying the timber, or a filler that is too rigid. A flexible sealant stays closed as the floor moves.
Can I do it myself?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. If it doesn’t work out, we can redo it.
Is the work guaranteed?
Yes. There’s a 12-month guarantee on every job.
Where do you work from?
We work from Crawley. Our applicators cover Gunnersbury.
Do you seal floor joints in bathrooms and kitchens?
Yes. The old joint comes out and a flexible silicone replaces it.
Can I add another job to the visit?
Yes. More than one area can go on one quote.
Common problems we fix in Gunnersbury
Decorators’ caulk is often used along skirting because it’s cheap and paintable. In a joint that moves or gets wet, it splits so the gap reappears.
People normally contact us after spotting something like this:
- Gaps opening between the floor and skirting
- Floor edges that trap water and grime
- Perimeter joints in tiled floors filled with grout
- Cracked grout where a tiled floor needs a movement joint
Gunnersbury is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
Questions to ask before you book
- The length of the guarantee
- What insurance they hold
- Which sealant they’ll use, and why
- How long to leave it before use
How we quote for floor joint sealing
There’s no set price list, because no two jobs are the same. What we look at:
- Any working-time requirements on site
- How much old sealant there is and how hard it is to remove
- The size of the job
- Access and height
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all play a part.
What to tell us for a quote
There’s no need for technical detail. It helps if you can tell us:
- Any access issues, like height or stairs
- Whether it’s a home or a business
- How many joints, rooms or windows are involved
- Photos by email, if that’s easy
To get a quote, call 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You’ll have a clear quote before work begins.
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. A few tips:
- Use a well-wrung mop rather than flooding the floor
- Cone off fresh joints until they’re ready
- Lift furniture rather than dragging it across joints
- Look at floor joints each spring
Don’t paint over silicone. If you plan to paint, we will use a paintable product.
A tiled floor that cracks along a line will keep cracking until it can move. Adding a movement joint early can stop cracks spreading to the tiles.
Why it’s worth doing now in Gunnersbury
Caulk is quick and cheap, but it cracks where the joint moves or gets wet, so the gap reappears. A flexible sealant moves with the floor, so the joint stays closed. 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. Dealing with it early is far simpler.
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
Why choose Mr Mastic in Gunnersbury
- 180+ five-star Google reviews
- More than 20 years in sealant work
- We are fully insured
- Tidy, careful work
Read what affects the cost and our reviews.
What sealant work cannot fix
A few problems are outside what sealant work can do:
- Tiles that have lifted or broken
- Subfloor problems that need a flooring contractor
- Water getting under the tiles from elsewhere
If in doubt, call 0345 464 0079 or send us an email and we will say what we think.
Joints and surfaces we work on
- Concrete floor joints
- Skirting boards
- Thresholds
- Wet room & bathroom floors
- Commercial floors
- Tiled floors
How it works
Good joint work is mostly preparation, so that is where we spend the time. Every joint is cleaned and dried before new material goes in. In total, it normally takes a few hours, depending on the length of joint. In Gunnersbury, as in most of London, parking needs a little planning. A visitor permit or a nearby bay makes the visit run more smoothly.
- First, the floor type, the gap and the traffic are checked.
- Any old caulk, grout or sealant is raked or cut out.
- The joint is vacuumed clean and backing fitted where needed.
- We apply the sealant in a colour that suits the floor.
- The joint is tooled neatly and the cure time explained.
How to prepare
- Mention any tricky access
- Clear items away from the joints we are working on
- Tell us if parking is tricky
Get a quote
We quote each job on its own. Simply phone 0345 464 0079 or email us and describe the job, and photos are welcome.
Read more
Work for landlords, hotels and businesses
Letting agents and landlords in Gunnersbury can book us as well as householders. Resealing between tenancies is a simple way to keep a property in good order.
Housing providers, facilities teams and property managers book us too in Gunnersbury and across Greater London. Several sites can be quoted together, and we’re fully insured.