Kent · England
Remedial sealant & repairs in Coldharbour, Kent
Removing failed, mouldy or leaking sealant and putting it right for Coldharbour, backed by a 12-month guarantee. Call for a quick quote.
- Gaps opening along the back of the worktop
- Movement joints that have split or pulled away
- Black mould underneath the bead
Can I do it myself?
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so just mention it when you contact us.
Remedial sealant for homes and businesses in Coldharbour
Remedial jobs in Coldharbour generally fall into a few patterns: over-sealed joints, hidden mould, repeat leaks and split movement joints. We strip each one back and start from scratch. Typical jobs include sealant applied over old sealant that has lifted and wide, uneven beads that look worse than the old ones, on leaking tray & enclosure joints, failed movement joints and expansion joints.
Being in a small place like Coldharbour makes no difference to the job itself: the journey and access are simply agreed in advance. Once we are there, the bathroom or kitchen gets the same care as anywhere else.
We stand behind the work with a one-year guarantee.
- Location
- Coldharbour (TN11)
- Region
- Kent
- Guarantee
- A year, on every job
- Quotes
- A clear price before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What affects the cost of remedial sealant
Jobs vary more than people expect. What affects the quote:
- The number of rooms or windows
- The product the joint needs
- When we can work, for business premises
- How easy the joints are to reach
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs. Call for a quick quote and we’ll explain what it covers.
What to tell us for a quote
When you call or email, it’s useful to know:
- If it’s domestic, commercial or a hotel
- Whether it has been sealed before
- The rough size of the job
- A few pictures by email, if you can
Call for a quick quote, or email us if that’s easier. Describe what needs sealing and we will explain what’s involved before giving you a price.
For landlords and businesses
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
If you manage several properties in or around Coldharbour, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs.
Remedial sealant around Coldharbour
Hard water is the norm across most of the South East, which leaves limescale on sealant, grout and fittings.
Rented homes near Hildenborough station change hands often, and botched sealant from a previous quick fix is easier to strip out between tenants. Managing a site like St Margaret Clitherow Catholic Primary School? Then we reseal washrooms and kitchens in schools and businesses as well as homes.
Coldharbour is about 2 miles north of Tonbridge, in Kent. Jobs in Coldharbour get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Coldharbour is one of 922 towns and villages in Kent we cover. For nearby work, see our Crawley page (21 miles or so).
Our applicators cover all of the TN11 postcode area for remedial sealant. We also cover Hildenborough (1 mile south-west), Hilden Park (1 mile south), Watt's Cross (1 mile west), Budds (1 mile north) and Stocks Green (2 miles south-west). We also work in nearby towns such as Maidstone (12 miles east), Dartford (15 miles north), Sevenoaks (5 miles north-west), Royal Tunbridge Wells (6 miles south), Gravesend (15 miles north) and Northfleet (15 miles north).
Near you in Coldharbour
Typical jobs here are in homes near Hugh Christie Technology College and The Flying Dutchman Public House, among other places. Coldharbour’s nearest station is Hildenborough station, about 1.6 miles south-west. Nearby you will also find Tonbridge Castle (2.2 miles south) and The Milne Museum (2 miles south). The countryside around Coldharbour includes Tudeley Woods RSPB reserve and Barden Lake.
What the job involves on each surface
Mouldy bath & shower sealant
Repeat mould generally points to a damp, poorly aired room. We’ll reseal and tell you if extraction looks to be the issue.
Leaking trays & enclosures
Repeat shower leaks often come from a tray that flexes or an enclosure sealed in the wrong place. We check both before we reseal.
When something else is needed
New sealant can’t fix everything, and we will tell you before work begins. Sealant won’t put right:
- Tiles that have come away from the wall
- Movement from fittings that aren’t supported
- Older mastics that may need an asbestos check before removal
If you’re not sure, just phone 0345 464 0079 or send us an email and we will give you a straight answer.
What we seal
- Botched or over-sealed joints
- Failed movement joints
- Mouldy bath & shower sealant
- Leaking tray & enclosure joints
- Shrunken worktop sealant
- Expansion joints
Coldharbour: your questions answered
Do you work for landlords with property near Hildenborough station?
Yes. We work for landlords and agents as well as householders, and several properties can be quoted together. You can call 0345 464 0079 or send us an email with the details for a clear quote.
Will you come out to Coldharbour?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can you remove sealant that’s been put over old sealant?
Yes. Stripping layered sealant takes longer than a normal reseal, but it’s the only way the new joint will last.
Do I need to be at home?
That depends on where the joints are. For work indoors, someone needs to let us in, and for outside work we’ll agree access with you when we book.
Do you remove the old sealant?
Yes. We cut out all the old sealant and clean the joint before resealing.
What sealant do you use?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Will you leave a mess?
No. The area is protected while we work and cleaned up afterwards.
Are you insured?
Yes. We are fully insured.
The process
There’s no need to move everything out, just the space around the work. We protect the rest, and the work takes a few hours for most joints, depending on how much old sealant has to come out in most cases. Somewhere like Coldharbour needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- We look at how the sealant has failed and check for movement or a leak path.
- All the old sealant comes out, including any layers underneath.
- Next, any mould is treated and the joint dried.
- We use the right backing and sealant for any joint that moves.
- The new joint is tooled neatly and we explain anything else we found.
Preparing for the visit
- Mention if the joints have been sealed before
- Mention any leaks or damp you’ve noticed
- Tell us if parking is tricky
How to get a quote
Every job is quoted individually, so start by telling us what you need. Just phone 0345 464 0079 or drop us an email with the details.
Related advice
When to call us in Coldharbour
Even good sealant ages. Over the years it shrinks, hardens and gets colonised by mould, especially in damp, poorly aired rooms. At that point it has to come out.
These are the problems we are asked about most:
- Gaps opening along the back of the worktop
- Black mould underneath the bead
- Sealant applied over old sealant that has lifted
- Repeat leaks from the same joint
In the older streets around Parish Church of St John, bathrooms in older houses have often been refitted more than once, with sealant laid over sealant.
Questions to ask before booking
- Is VAT in the price?
- Who turns up on the day
- What insurance they hold
- How long to leave it before use