East Sussex · England
Lewes Floor Joint Sealing
We cover Lewes for sealing skirting-to-floor joints, tiled floor movement joints and concrete floor joints. Old sealant removed completely, joints prepared properly.
- Chipped and open joints in warehouse floors
- Skirting that has pulled away from the floor
- Threshold joints that have opened or worn
How the job changes by surface
Wet room and bathroom floors
In a wet room, the floor-to-wall joint is a key line of defence. It’s resealed with a sanitary silicone and we will say if the problem looks like more than the joint.
Thresholds
A threshold is where floors and frames meet. We seal them with a flexible sealant that suits both sides.
About our floor joint sealing in Lewes
Thresholds are where two floors, or a floor and a door, meet. We seal them with a flexible sealant suited to the floor finishes either side. If you’re dealing with floor edges that trap water and grime and grout used at the floor edge instead of sealant, we can put it right, on thresholds, commercial floors and skirting boards alike.
Shops and business units around Lewes have floors that see a lot of traffic. Joints at thresholds and in tiled or concrete floors need resealing before the edges start to break up.
We stand behind the work with a one-year guarantee.
- Location
- Lewes (BN7, BN8, BN6, RH15)
- Wider area
- East Sussex
- Cover
- A year, on every job
- Quotes
- A clear price before we start
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What happens if it’s left?
Water that gets past a floor joint can damage the floor beneath. Sealing them now keeps the problem at the surface. Around Lewes, failed sealant lets water into hidden places, such as under the floor, behind a panel or into a wall. Whatever the joint, failed sealant only gets worse.
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part.
Why us?
- White, clear, grey or another colour, product permitting
- Homes, businesses and hotels
- Over 20 years’ experience
- Neat joints and a tidy finish
See what affects the cost and what customers say.
Places near Lewes
More services for Lewes
What happens on the day
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. All told, the work takes a few hours for most rooms, longer for large commercial floors. A visit in Lewes needs access to the work and a place to park close by. If the job is outside, mention gates, side access and anything above ground floor.
- 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 vacuumed clean, with backing fitted wherever depth matters.
- A flexible sealant, or a floor-joint sealant for concrete, is applied in a colour to suit.
- Finally we tool it smooth and explain when the floor can be used and cleaned.
How to prepare
- Where the joints are inside, avoid wetting them before we arrive
- Clear items away from the joints we are working on
- Mention any leaks or damp you’ve noticed
How to get a quote
If you’re in Lewes and need floor joint sealing, ring 0345 464 0079 or send us an email. Tell us what the problem is and where, and you’ll get a clear quote before work begins.
Related advice
Your questions about floor joint sealing in Lewes
Can you help a landlord with a rental near Lewes station?
Yes. We work for landlords and letting agents as well as homeowners, and several properties can be quoted together. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Is Lewes in your area for floor joint sealing?
Yes. We work across London and the South East, and Lewes is part of that. You can phone 0345 464 0079 or send us an email and let us know what needs doing, and we’ll give you a clear quote.
Why does the gap under my skirting keep coming back?
Normally it’s movement: heating drying the timber, or a filler that’s too rigid. A flexible sealant stays closed as the floor moves.
Can I do it myself?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs.
Where are you based?
Mr Mastic is based in Crawley. We cover Lewes and the rest of East Sussex.
Is the work guaranteed?
Yes: twelve months. If anything is not right with the work within the year, let us know and we will sort it.
Do you have insurance?
Yes, we are fully insured for domestic and commercial work.
What do you put in the joint?
Each joint gets the product that suits it. Movement, water and weather all affect the choice.
What affects the quote in Lewes
The quote reflects the job in front of us. We look at:
- Whether there’s mould to deal with
- The product the joint needs
- Working hours on commercial sites
- How much old sealant there is and how hard it is to remove
What you pay reflects the work, not a rough estimate. That is why we ask a few questions first and give you a clear quote before any work starts.
What we need to know
There’s no need for technical detail. It helps if you can tell us:
- The rough size of the job
- Where the property is
- How we’d reach the joints
- The type of property
For a quote, call 0345 464 0079 or email us with the location and a short description of the problem. We will send you a clear quote before any work starts.
How to look after the new joints
So the new joints stay in good condition:
- Walk round the room once a year and look at the edges
- Lift furniture rather than dragging it across joints
- Keep floor cleaning water to a minimum at the edges
- Keep heavy wheels off new concrete joints until cured
Have a look at the joints once the heating season is over. Small gaps at the ends can be touched up.
Sealing a gap while it’s small is a quick job. Left alone, they collect dirt and widen and are harder to clean out.
Work for landlords, hotels and businesses
If you manage several properties in or around Lewes, several properties can be quoted together. Just tell us the addresses and what each one needs, and pictures by email help.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements.
What floor joint sealing looks like in Lewes
Floors around East Sussex 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.
If you look after a church, hall or community building such as Church of St John sub Castro, floor and skirting joints in halls and kitchens wear like any others. For site and facilities teams at buildings such as Lewes Old Grammar School, floor and threshold joints in busy corridors wear quickly and are best resealed early.
Lewes is about 7 miles north-east of Brighton, in East Sussex. Every kind of property in Lewes is covered for floor joint sealing. Every job comes with our 12-month guarantee. Our East Sussex coverage runs to 289 places, and Lewes is one of them. You can also see our page for Brighton, about 7 miles away.
Every address in BN7, BN8, BN6 and RH15 is within our area for floor joint sealing. Floor joint sealing is available to properties on Market Lane, Market Street and High Street. Main roads around Lewes include the A26 and A275, so getting to you is simple. Nearby, we also carry out floor joint sealing in South Malling (1 mile north-east), Southover (1 mile south-east), Cliffe (1 mile east), Offham (1 mile north-west) and Hamsey (1 mile north). Further out, we also cover Eastbourne (14 miles south-east), Seaford (8 miles south-east), Hailsham (11 miles east), Crowborough (14 miles north-east), Uckfield (8 miles north-east) and Newhaven (6 miles south). Lewes is one of the larger places we cover in East Sussex.
Near you in Lewes
In Lewes, that means homes and buildings near Priory School, St Pancras Catholic Primary School and Railway Land. The closest station to Lewes is Lewes station, about 0.6 miles south-east. A little further out are Lewes Victoria Hospital (0.5 miles west) and Museum of Agricultural Bygones (3.9 miles east). Not far away are Offham Hill and Malling Down.
Do you need floor joint sealing in Lewes?
New floors settle once they’re in use. The edges pull away from the skirting.
If you can see any of these, it’s time to have the joints looked at:
- Cracked grout where a tiled floor needs a movement joint
- Gaps opening between the floor and skirting
- Caulk that has cracked where the floor moves
- Floor edges that trap water and grime
Rented homes near Lewes station change hands often, and open skirting and floor joints collect dirt and water, so seal them while the property is empty.
Questions to ask before you book
- Whether VAT is included
- The length of the guarantee
- When the joint can take water or movement
- What product goes in the joint