Kent · England
Remedial Sealant in Thong
Our applicators work in Thong on removing failed, mouldy or leaking sealant and putting it right. Old sealant removed completely, joints prepared properly and a 12-month guarantee.
- Decorators’ caulk around a bath or shower
- Dark patches showing through the sealant
- Floor or wall movement joints that have failed
Remedial sealant in Thong
Remedial jobs in Thong generally fall into a few patterns: sealant over sealant, mould under the bead, leaks that come back and movement joints that have split. Each is stripped back and done again properly. If you are dealing with caulk or the wrong sealant used in a wet area and black mould underneath the bead, we can help.
In a village or hamlet like Thong, homes are often older cottages and farmhouses alongside a few newer houses. Older walls and timber floors can move a little, and cracked grout and split sealant are often the first signs.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Place
- Thong (DA12)
- Wider area
- Kent
- Cover
- A year, on every job
- Quotes
- A clear price before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
How to look after the new joints
Looking after new joints is easy, and it makes a real difference:
- Use a soft cloth, not a scourer, on silicone
- Do not wait for a small gap to become a leak
- Don’t point over movement joints
- Don’t add new sealant on top of old
Don’t let anyone seal over it later. Over-sealing is how many remedial jobs start, so the old bead should always come out first.
A failing joint rarely gets better on its own. Every shower or downpour sends more water through, into floors, walls or ceilings. Sorting it early limits the damage.
What happens if it’s left?
Leaks that are left keep doing damage out of sight: wet floors, stained ceilings and swollen worktops. Dealing with the joint now is a small job by comparison. Older cottages and farmhouses around Thong can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all make a difference.
What you get with us
- Old sealant always removed completely
- Homes, businesses and hotels
- Approved under the ARBOMaster scheme
- A sealant colour to suit the surroundings
Should I try it myself first?
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
FAQs for Thong
Do you cover smaller places like Thong?
Yes, we do. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Do you cover Thong for remedial sealant?
Yes. Our work covers London and the South East, and Thong is part of that. Just phone 0345 464 0079 or drop us an email with a few details of the job.
Are you ARBOMaster approved?
Yes. We are approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
Can you do several jobs on one visit?
Yes. More than one area can go on one quote.
How much does remedial sealant cost in Thong?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. You will get a clear quote before we start.
Are you fully insured?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
Does someone need to be in?
If the work is inside, we need someone to let us in. Once we’ve agreed the job, you don’t need to watch us work.
Where are you based?
Mr Mastic is based in Crawley. Our applicators cover Thong, along with the rest of our area.
Honest limits
To be straight with you, there are a few things sealant won’t fix:
- Tiles that have come away from the wall
- A cracked shower tray or bath (that needs repair or replacing)
- A bath, tray or worktop that moves until it’s properly fixed
If in doubt, call 0345 464 0079 or send us an email and we will say what we think.
Where we work in Thong
- Expansion joints
- Botched or over-sealed joints
- Leaking tray & enclosure joints
- Failed movement joints
- Shrunken worktop sealant
- Mouldy bath & shower sealant
What we do, step by step
There’s no need to move everything out, only the area right around the joints. We protect the rest, and the job takes a few hours for most joints, depending on how much old sealant has to come out in most cases. In a small place like Thong, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We look at how the sealant has failed and check for movement or a leak path.
- Every layer of old sealant is cut and cleaned out.
- The joint is cleaned, treated for mould and left to dry.
- We use the right backing and sealant for any joint that moves.
- We tool the joint and tell you about anything else that needs attention.
Preparing for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Try not to wet indoor joints just before the visit
- For business premises, tell us about site rules or sign-in
Getting a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we will explain how we’d tackle it. When it suits you, phone 0345 464 0079 or drop us an email.
Related advice
Towns and villages near Thong
What else we do in Thong
Do you need remedial sealant in Thong?
Water from somewhere else can ruin a good seal. A slow leak behind the tiles soaks the joint from the back, and the sealant lifts or goes mouldy from underneath.
People generally contact us when they notice something like this:
- Floor or wall movement joints that have failed
- Kitchen joints letting water behind the worktop
- Leaks that keep coming back after resealing
- Caulk or the wrong sealant used in a wet area
If you let a flat or house near Sole Street station, failed or mouldy sealant is worth putting right between tenancies, before it turns into a leak.
What to look for in a quote
- Which sealant they’ll use, and why
- Whether they seal over old material or remove it
- How long the guarantee is
- How the colour is chosen
Bathrooms and kitchens in Thong
Thong is within about 3 miles of the coast. Near the coast, holiday lets and guest houses can see bathrooms used by one guest after another, which wears sealant and grout out faster than in a quiet home. Hard water is the norm across most of the South East, so limescale builds up on sealant, grout and fittings.
Managing a site like Riverview Infant School? Then we reseal washrooms and kitchens in schools and businesses as well as homes. Homes close to Church of St Peter and St Paul include some older properties, and older homes can move a little, which is hard on rigid grout and tired sealant.
Thong is about 2 miles south-east of Gravesend, in Kent. From the centre of Thong to the outskirts, remedial sealant is available for homes and businesses alike. Across Kent, we cover 922 places, and Thong is one of them. For nearby work, see our London page, about 22 miles away.
Every address in DA12 is within our area for remedial sealant, from the main roads to the quietest streets. Other places close to Thong include Upper Ifield (1 mile east), Shorne Ridgeway (1 mile east), Shorne (1 mile east), Chalk (1 mile north) and Higham (2 miles east). Within a short drive, we also cover Maidstone (11 miles south-east), Sittingbourne (15 miles east), Dartford (8 miles west), Sevenoaks (13 miles south-west), Northfleet (3 miles north-west) and Swanley (10 miles west).
Near you in Thong
Around Thong, our work takes us to homes and buildings near Shorne Woods Country Park and Thamesview School. The closest station to Thong is Sole Street station, about 2.2 miles south-west. Well-known places in the area include Rochester Castle (4.5 miles east) and Gravesham Museum (2.6 miles north-west). For a walk, there’s Rede Common and Gad's Hill.
What the job involves on each surface
Movement & expansion joints
Movement joints in floors, walls and façades need a flexible sealant set to the right depth. We remove the failed sealant, fit backing and reseal with a low-modulus product.
Over-sealed & botched joints
A botched joint can hide two or three layers of sealant, including the smears and film on surrounding tiles. Only a clean joint will take a new bead.