Greater London · England
Richmond upon Thames Floor Joint Sealing
Floor joint sealing across Richmond upon Thames and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Threshold joints that have opened or worn
- Tiled floors with no room to move
- Cracked caulk along skirting in bathrooms and kitchens
DIY versus a professional finish
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Floor joint sealing in Richmond upon Thames, done properly
Good floor joints come down to the right product and clean, prepared edges. Old caulk, grout or failed sealant comes out first, the joint is cleaned and backed where needed, then the new sealant goes in. We work on tiled floors, skirting boards and thresholds, and the jobs we see most are cracked caulk along skirting in bathrooms and kitchens and grout used at the floor edge instead of sealant.
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.
Whatever the size of the job, it’s backed by our 12-month guarantee in Richmond upon Thames and across Greater London.
- Where
- Richmond upon Thames (TW9, TW10, SW14, TW1)
- Region
- Greater London
- Cover
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Why act early in Richmond upon Thames
Floor joints left open collect dirt that’s hard to clean out, and they look untidy. Sealed joints are easier to keep clean and finishes the floor. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in Richmond upon Thames, the repair is bigger than a sealant job.
Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. You’ll know the price before we begin.
Why choose Mr Mastic in Richmond upon Thames
- We never seal over old sealant
- 4.9 on Google from 180+ five-star reviews
- Neat joints and a tidy finish
- Fully insured
Read our cost guide and what customers say.
How to look after the new joints
Once the sealant has cured, a few habits help it last:
- Use a well-wrung mop rather than flooding the floor
- Cone off fresh joints until they’re ready
- Avoid caulk in bathrooms and kitchens
- Vacuum floor joints regularly to stop grit building up
Keep heavy traffic off resealed concrete joints for the cure time we give you. Cone off the area if needed while it cures.
Open skirting gaps let in draughts, dust and sometimes insects. Sealing it keeps the room tidier and stops it getting worse.
The process
There’s no need to move everything out before we come, only the area right around the joints. Everything nearby is protected, and the job takes a morning or an afternoon for most homes in most cases. In a London area like Richmond upon Thames, the main things to plan are parking and access: tell us about permits, visitor bays or off-street space, which floor we are working on and whether there’s a lift.
- We clear the edges of the floor so the joints are easy to reach.
- Old material is removed from the joint.
- Edges are cleaned and dried.
- A flexible sealant suited to the floor is applied and tooled.
- Finally, we check the work and talk you through aftercare.
How to prepare
- Tell us about any previous sealing or DIY attempts
- Let us know about stairs, lifts or work at height
- Mention any parking rules near the property
How to get a quote
There’s no standard price list. Instead, your job gets its own clear quote. To arrange one, call 0345 464 0079 or drop us an email.
Related advice
Honest limits
We will not take on work that won’t last, so these are the limits:
- A tiled floor that needs relaying
- Damaged concrete that needs breaking out and repairing
- Floors that are uneven or need levelling
If you’re not sure, just ring 0345 464 0079 or email us and we’ll give you a straight answer.
What we seal
- Wet room & bathroom floors
- Commercial floors
- Skirting boards
- Tiled floors
- Concrete floor joints
- Thresholds
Nearby places to Richmond upon Thames
Also in Richmond upon Thames
Common questions in Richmond upon Thames
Do you work for landlords with property near Richmond station?
Yes, we work for landlords and letting agents. Just call 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear price.
Can parking be tricky for a visit in Richmond upon Thames?
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.
Which products do you use?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference.
What causes gaps between the floor and skirting?
Movement from drying timber and settling floors pulls the skirting and floor apart. Rigid fillers split, so we use a flexible sealant.
How much does floor joint sealing cost in Richmond upon Thames?
We don’t publish prices, because the cost depends on the job: how much there is, what’s there now, how we reach it and what it needs. You will get a clear quote before work begins.
Do you use a paintable sealant?
On joints you want to paint, yes. Silicone does not take paint, so tell us your plans.
Is caulk good enough for skirting?
Caulk cannot cope with movement or water. Floor edges move through the year, so a flexible sealant suits them better.
Can you quote for more than one area?
Yes. Just list everything you need and you will get one quote.
What affects the cost of floor joint sealing
The price is agreed before any work begins. It’s based on:
- How much old sealant there is and how hard it is to remove
- Any working-time requirements on site
- The type of sealant required
- Any mould that needs treating
What it costs depends on the amount of work, how much old material has to come out and how easy the joints are to reach. We give a clear quote before any work starts, so you know where you stand.
Asking for a quote
Photos by email are helpful but not essential. Please mention:
- How we’d reach the joints
- The problem you’ve noticed
- Photos by email, if that’s easy
- Where the job is, and your postcode
Every job is quoted individually. Just ring 0345 464 0079 or send us an email with the details, and pictures are welcome.
When to call us in Richmond upon Thames
An open floor joint fills with dirt and water. In kitchens and bathrooms, mop water gets into the gap.
Any of these means the joints need attention:
- Floor edges that trap water and grime
- Grout used at the floor edge instead of sealant
- Open joints around bathroom floor edges
- Failed joint filler in concrete floors
As a London address, Richmond upon Thames can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Comparing quotes
- The length of the guarantee
- How much experience the applicator has
- Which sealant they’ll use, and why
- Whether you can choose the colour
What floor joint sealing looks like in Richmond upon Thames
Many of London’s new homes are flats in bigger developments, where snagging may go through the developer or managing agent. Across Greater London, floors range from older suspended timber floors to concrete slabs in newer homes and commercial units, and each moves in its own way. That’s why the skirting and threshold joints need a flexible seal.
Letting a property close to Richmond station? Then open skirting and floor joints collect dirt and water, so seal them while the property is empty. Schools such as Marshgate Primary School are buildings too, and floor joints in corridors, halls and entrances take heavy wear and need resealing before the edges break up.
Richmond upon Thames is about 3 miles south of Ealing, in Greater London. Wherever you are in the TW9 postcode area, our applicators can take on floor joint sealing. 764 places in Greater London are on our list, large and small. We also work in London, about 9 miles from Richmond upon Thames.
Postcode districts we cover here for floor joint sealing: TW9, TW10, SW14 and TW1. You’ll find streets such as Church Road, King George Square and Topiary Square, all of which we cover. You’ll find Richmond upon Thames on the B321 and B322, which makes it straightforward to reach with everything needed for floor joint sealing. Neighbouring places we cover for floor joint sealing include North Sheen (1 mile north-east), East Sheen (1 mile east), Mortlake (1 mile east), Kew (2 miles north-east) and Strand-on-the-Green (2 miles north-east). Further out, we also cover London (9 miles east), City of Westminster (7 miles north-east), Marylebone (8 miles north-east), Kensington (5 miles north-east), St Pancras (9 miles north-east) and Shoreditch (10 miles north-east).
What’s near Richmond upon Thames
Around Richmond upon Thames, our work takes us to homes and buildings near Pesthouse Common, The White Horse Richmond pub and Kneller Hall Junior School, among other places. There’s a railway station in Richmond upon Thames itself: Richmond station. Other landmarks nearby include Eel Pie Island Museum (1.5 miles south-west) and Treaty Centre (3 miles west). Green spaces nearby include Duke's Hollow and Richmond Hill.