Kent · England
Remedial sealant & repairs in Leybourne, Kent
Removing failed, mouldy or leaking sealant and putting it right in Leybourne, with a 12-month guarantee on every job. Ask us for a quote.
- Dark patches showing through the sealant
- Products that weren’t meant for the joint
- Wide, uneven beads that look worse than the old ones
About our remedial sealant in Leybourne
Decorators’ caulk in a shower, bathroom silicone on a window, a rigid filler in a movement joint fails however neatly it’s applied. We take it out and use a sealant made for that joint. If you are dealing with sealant applied over old sealant that has lifted and torn expansion joints, we can put it right, on mouldy bath & shower sealant, failed movement joints and leaking tray & enclosure joints alike.
Being in a small place like Leybourne makes no difference to the job itself: it just means planning the journey and access beforehand. In the bathroom or kitchen, the work is the same as in any town.
There’s a 12-month guarantee on every job, whatever its size.
- Where
- Leybourne (ME19, ME20)
- Wider area
- Kent
- Cover
- One year on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
What happens on the day
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 few hours for a typical bath or shower, longer where several layers have been applied in most cases. In a small place like Leybourne, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we work out whether the problem is the sealant, movement or a leak.
- Old beads and residue are removed down to clean surfaces.
- Mould is treated and the joint dried.
- The right product goes in, with backing where the joint moves.
- The joint is tooled and you are told about anything else we found.
Before we arrive
- Mention any tricky access
- Mention any sign-in or site rules at work premises
- Clear the area around the work
Ask for a quote
We don’t publish a price list, because every job is different. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or email us.
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Leybourne questions
Do you work for landlords with property near West Malling station?
Yes. We work for landlords and agents as well as homeowners. You can call 0345 464 0079 or email us with the details for a clear quote.
Do you work for hotels and guest houses in Leybourne?
Yes, hospitality work, including hotels, is part of what we do. Jobs can be programmed room by room, with out-of-hours working possible to arrange.
What if the leak isn’t the sealant?
That’s why we look for the cause first. If we find the leak is elsewhere, we tell you before going further.
Do you guarantee remedial jobs?
Yes. Every job comes with our 12-month guarantee.
Do you take out the old sealant first?
Yes, every time. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.
Do I need to be at home?
We need access to the joints, so we’ll agree that with you when we book. For inside work, that normally means someone being in.
Will there be a smell?
Some sealants have a smell while they cure, but it fades. Ventilation helps.
Will it make a mess?
Not at all. The area is protected while we work and cleaned up afterwards.
How the job changes by surface
Movement & expansion joints
A movement joint must be able to stretch. Failed sealant is cut out, backing rod or tape is fitted and the joint resealed.
Mouldy bath & shower sealant
Mould often spreads under the bead as well as through it. We treat the exposed joint once the bead is out.
How we quote for remedial sealant
For a quick quote, just ask. What matters most is:
- Whether the work is at height
- The old material and how stubborn it is
- Mould in or behind the old joints
- How many areas need sealing
Leaving a failed joint usually makes the job bigger, not smaller, as water and mould keep getting in. If you’re unsure, call 0345 464 0079 or email us for an honest opinion and a quote.
What we need to know
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Whether it’s a home or a business
- Access, such as stairs, a lift or height
- What’s wrong with the joints now
- A few pictures by email, if you can
Every job is quoted individually, so the first step is telling us about yours. Just call 0345 464 0079 or drop us an email with the details and send photos if you have them.
Leave it or put it right?
It’s easy to scratch acrylic, enamel or an uPVC frame cutting out old sealant, and any film left behind stops new sealant sticking. Careful stripping is where most of our time goes. Older cottages and farmhouses around Leybourne can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
We don’t show prices on the website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or send us an email.
Why choose Mr Mastic in Leybourne
- White, clear, grey or coloured to suit, where the product allows
- Anti-fungal sanitary silicone in wet areas
- A 12-month guarantee on all work
- Neat joints and a tidy finish
See our cost guide and customer reviews.
Signs you need remedial sealant in Leybourne
Movement tears sealant that isn’t designed for it. A bath that flexes, a tray that rocks or a building joint that opens and closes will split a rigid or thin bead.
Common reasons people contact us are:
- Mould trapped under a layer of silicone
- Thick, messy sealant smeared over tiles
- Over-sealed joints coming away
- Movement joints that have split or pulled away
If you live in an older home near Church of St Peter and St Paul, walls and floors in older homes can move, and sealant and grout show it first.
Questions to ask before booking
- What happens if they find a problem under the old sealant
- Who does the work, and how experienced they are
- Which colour the sealant will be
- How the surfaces are prepared before sealing
DIY sealant or a professional job?
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Landlords, agents and businesses in Leybourne
We work for landlords and agents as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
Housing providers, facilities teams and property managers book us too. Several sites can be quoted together, and we’re fully insured.
More services for Leybourne
Leybourne homes and their sealant
Leybourne has hotels and guest accommodation nearby. Hotel bathrooms are part of our work as well as homes, and can be done room by room. Hard water is the norm across most of the South East, so limescale builds up on sealant, grout and fittings.
Schools such as Lunsford Primary School are buildings too, and we reseal washrooms and kitchens in schools and businesses as well as homes. Rented homes near West Malling station change hands often, and failed or mouldy sealant is worth putting right between tenancies, before it turns into a leak.
Leybourne is about 5 miles north-west of Maidstone, in Kent. Across the ME19 area, our applicators can take on remedial sealant. Leybourne is one of 922 places in Kent where we work. For nearby work, see our London page.
Jobs for remedial sealant in ME19 and ME20 is quoted and booked the same way as anywhere else. Streets in the area include London Road, Oxley Shaw Lane and Redbank, and we cover them all. We also cover the places around Leybourne: Larkfield (1 mile east), Lunsford (1 mile north-east), New Hythe (1 mile north-east), Birling (1 mile north-west) and Snodland (2 miles north). We also work in nearby towns such as Maidstone (5 miles south-east), Sittingbourne (14 miles east), Dartford (13 miles north-west), Sevenoaks (10 miles west), Royal Tunbridge Wells (13 miles south-west) and Gravesend (9 miles north).
What’s near Leybourne
In Leybourne, that means homes and buildings near The Malling School, Leybourne Lakes Country Park and The Malling School. The nearest railway station is West Malling station, roughly 0.7 miles south-west. Other landmarks nearby include Leybourne Castle (less than half a mile north-west) and Coldrum Long Barrow (2.7 miles north-west). Green spaces nearby include Burham Down and Blue Bell Hill.