Kent · England
Remedial sealant & repairs in Waltham, Kent
Removing failed, mouldy or leaking sealant and putting it right for Waltham, backed by a 12-month guarantee. Call for a quick quote.
- Wide, uneven beads that look worse than the old ones
- Dark patches showing through the sealant
- A shower that leaks however often it’s resealed
FAQs for Waltham
Is Waltham in your area for remedial sealant?
Yes, Waltham is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or send us an email and let us know what needs doing.
Can you help a landlord with a rental near Chilham station?
Yes. We work for landlords and letting agents as well as homeowners, and several properties can be quoted together. You can ring 0345 464 0079 or drop us an email with the details for a clear quote.
Do you hold any approvals?
Yes. We’re approved under the ARBOMaster scheme, the approved applicator scheme for Arbo sealants.
What information do you need?
Where the job is, what the problem is and roughly how big it is. If you can, email a few pictures.
Do you work for hotels and businesses?
Yes. Hotels, offices and other businesses use us and we are fully insured.
What if the leak isn’t the sealant?
In that case, we tell you what we have found. A plumber or fitter may be needed.
What does remedial sealant cost?
Size, access and the old material all affect the cost. Ask us for a quote and we will talk you through it.
Can you take off two layers of silicone?
Yes. We remove every layer; over-sealing fails because silicone won’t bond to silicone.
How we handle remedial sealant in Waltham
If a joint fails again and again, something is causing it. A tray that moves, a worktop that isn’t fixed, the wrong sealant or water getting in elsewhere will beat any new bead. Finding that cause comes before any new sealant. If you have a shower that leaks however often it’s resealed and thick, messy sealant smeared over tiles, we can put it right.
Being in a small place like Waltham makes no difference to the job itself: it just means planning the journey and access beforehand. Once we are there, the bathroom or kitchen gets the same care as anywhere else.
Each job carries a 12-month guarantee, large or small.
- Location
- Waltham (CT4)
- Wider area
- Kent
- Guarantee
- A year, on every job
- Quote
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Remedial sealant in Waltham: local notes
Hard water is the norm across most of the South East, so limescale builds up on sealant, grout and fittings.
For landlords with property near Chilham station, a joint that keeps failing is best fixed properly while the property is empty.
Waltham is about 6 miles south-west of Canterbury, in Kent. For remedial sealant in and around Waltham, please ring 0345 464 0079 or drop us an email for a quick quote. We’re based in Crawley and cover Kent, Waltham included. Our Kent coverage runs to 922 places, and Waltham is one of them. For nearby work, see our Chelmsford page, about 44 miles away.
Postcode districts we cover here for remedial sealant: CT4. You will find streets such as Church Lane, Richdore Road and Kake Street, all of which we cover. Other places close to Waltham include Stelling Minnis (2 miles east), Bossingham (2 miles east), Stowting Common (4 miles south), Stowting (4 miles south) and Rhodes Minnis (4 miles south-east). Further out, we also cover Ashford (8 miles south-west), Canterbury (6 miles north-east), Dover (13 miles east), Folkestone (10 miles south-east), Whitstable (11 miles north) and Faversham (10 miles north-west).
Local landmarks in Waltham
Locally, jobs take us to homes and businesses close to Compasses Inn, among other places. The closest station to Waltham is Chilham station, roughly 3.7 miles north-west of the centre. Other landmarks nearby include Chilham Castle (4.1 miles north-west) and Kent and Canterbury Hospital (5.5 miles north-east).
Landlords, agents and businesses in Waltham
If you manage several properties in or around Waltham, jobs at different addresses can be quoted together. Send us the addresses and the work at each.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.
What we do, step by step
We keep the work tidy and contained to the area we are working on, so you can carry on as normal. The job generally takes a few hours, depending on how many layers have to come out, and we tell you how long to leave it before we go. In a small place like Waltham, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We protect the surfaces around the joint.
- The botched or failed sealant is cut away completely.
- The joint is degreased and checked for movement and leaks.
- Once dry, a suitable sealant is applied and tooled.
- We give you the cure time and explain what caused the failure.
Preparing for the visit
- Mention any tricky access
- Mention if the joints have been sealed before
- Keep pets and children clear of the area while we work
Getting a quote
To get a quote, phone 0345 464 0079 or send us an email with the location and a short description of the problem. You’ll have a clear quote before work begins.
Related advice
Why it’s worth doing now in Waltham
Ripping out a bathroom is not generally needed. If the bath, tray and tiles are sound, remedial resealing usually puts it right. If they’re not, we will tell you. Where a wall is exposed, as many are in small places like Waltham, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
What it costs depends on the size of the job, how hard the old material is to remove and access to the work. You will have a clear quote before any work starts.
Why choose Mr Mastic in Waltham
- Over 20 years’ experience
- 4.9 on Google from 180+ five-star reviews
- Colour agreed with you before we start
- Anti-fungal silicone where joints get wet
Read what affects the cost and what customers say.
Keeping the joints in good condition
How long the joints last depends on use and care. We suggest:
- Don’t add new sealant on top of old
- Have loose fittings fixed before resealing
- Ask why a joint failed before redoing it
- Act on a lifting corner straight away
Ventilation keeps mould away from the new bead: run the fan during and after showers, or open a window.
Warning signs: peeling layers, mould showing through the bead, leaks after showering or cracks in a movement joint. Any of them means it’s time for remedial work.
Common problems we fix in Waltham
Sealant needs a clean, dry surface with no grease on it. Soap film, dust, damp or old residue stop it gripping, and the joint starts to come away early.
It’s worth asking for a quote if you see:
- Kitchen joints letting water behind the worktop
- Torn expansion joints
- Sealant peeling off a dusty or damp surface
- Leaks that keep coming back after resealing
In the older streets around Church of St Bartholomew, timber floors under older bathrooms flex, so joints need a sealant that moves with them.
Comparing quotes
- Who turns up on the day
- Whether the sealant suits the joint
- How the surfaces are prepared before sealing
- Whether all the old sealant comes out first
What we cannot put right
New sealant can’t fix everything, and we will tell you before work begins. It will not solve:
- A bath, tray or worktop that moves until it’s properly fixed
- Water damage behind tiles that needs a tiler
- A leaking trap, valve or supply pipe
If in doubt, ring 0345 464 0079 or send us an email and we will say what we think before booking.
Where we work in Waltham
- Failed movement joints
- Expansion joints
- Leaking tray & enclosure joints
- Mouldy bath & shower sealant
- Botched or over-sealed joints
- Shrunken worktop sealant