Kent · England
Remedial sealant & repairs in Knockholt, Kent
Remedial sealant across Knockholt and nearby, with old sealant always removed completely and a 12-month guarantee.
- Leaks that keep coming back after resealing
- Sealant that came away because the surface wasn’t prepared
- Thick, messy sealant smeared over tiles
How to look after the new joints
How long the joints last depends on use and care. We suggest:
- Clean sealant with mild products only
- Deal with small splits early
- Get the cause of a repeat leak found before resealing
- Report a tray that rocks or a worktop that lifts
Go easy on the new sealant: no scraping, scouring pads or harsh chemicals.
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.
How we handle remedial sealant in Knockholt
Remedial work is what we do when sealant has failed or been done badly. New sealant over old, smeared beads, unsuitable products and hidden mould all need stripping out before the joint can be done properly. We work on failed movement joints, botched or over-sealed joints and expansion joints, and common reasons people get in touch are repeat leaks from the same joint and mould trapped under a layer of silicone.
In a village or hamlet like Knockholt, 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.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Place
- Knockholt (TN14)
- Wider area
- Kent
- Guarantee
- One year on every job
- Price
- A clear price before work begins
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Nearby places to Knockholt
Other services in Knockholt
When it isn’t the sealant
We will not take on work that won’t last, so these are the limits:
- A bath, tray or worktop that moves until it’s properly fixed
- Sealant in an older building that needs testing for asbestos first
- Plumbing leaks behind walls or under trays
If in doubt, phone 0345 464 0079 or email us and we will say what we think.
Surfaces we seal
- Failed movement joints
- Expansion joints
- Shrunken worktop sealant
- Leaking tray & enclosure joints
- Mouldy bath & shower sealant
- Botched or over-sealed joints
Knockholt: your questions answered
Will you come out to Knockholt?
Yes, we do. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Can you help a landlord with a rental near Knockholt station?
Yes. We work for landlords and letting agents as well as homeowners. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Can you match the sealant colour?
Usually, yes. White, clear and grey are common, and other colours are available for many products, and we agree the colour with you before work begins.
What information do you need?
Just the basics: where it is, what you’ve noticed and how we reach it. After that, simply phone 0345 464 0079 or email us.
What if resealing won’t fix my leak?
In that case, we tell you what we have found. A plumber or fitter may be needed before any new sealant goes on.
Someone sealed over the old bead. Can you fix it?
Yes. Each layer is cut out and the residue cleaned off, then the joint is resealed once.
How long will it take to strip and reseal the joint?
Longer than a simple reseal, because every layer has to come out. For most joints, it’s a few hours.
What do you put in the joint?
Each joint gets the product that suits it. Movement, water and weather all affect the choice.
Bathrooms and kitchens in Knockholt
Hard water is the norm across most of the South East, which leaves limescale on sealant, grout and fittings, and it has to be cleaned off before new sealant goes in.
In the older streets around St Katharine's Church, bathrooms in older houses have often been refitted more than once, with sealant laid over sealant.
Knockholt is about 4 miles north-west of Sevenoaks, in Kent. Wherever you are in the TN14 postcode area, we cover remedial sealant for homes and businesses. Our Kent coverage runs to 922 places, Knockholt among them. We also work in London, about 16 miles from Knockholt.
Work in TN14 works the same way as everywhere else we cover. Whether your property is on Main Road and Blueberry Lane or anywhere close by, we can help. Close by, we work in Knockholt Pound (1 mile north-east), Halstead (2 miles north-east), Sepham Heath (2 miles north-east), Pratt's Bottom (2 miles north) and Twitton (3 miles east). We also work in nearby towns such as Dartford (11 miles north-east), Sevenoaks (4 miles south-east), Royal Tunbridge Wells (14 miles south-east), Gravesend (14 miles north-east), Tonbridge (11 miles south-east) and Northfleet (13 miles north-east).
Around Knockholt
Around Knockholt, our work takes us to homes and buildings near The Three Horseshoes pub, among other places. For rail, the closest station is Knockholt station, about 2.7 miles north-east of the centre. Nearby you’ll also find Orpington Hospital (3.6 miles north) and Otford Heritage Centre (3.9 miles east). For a walk, there’s Betsom's Hill and Downe Bank.
Surface by surface
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.
Worktops & kitchens
Shrunken worktop sealant leaves a gap that lets water into the back edge. We strip it, degrease the joint and reseal in a colour to suit.
Do you need remedial sealant in Knockholt?
Using the wrong product is a common cause: acrylic caulk in a wet area, a general-purpose sealant on a moving joint, or an acetoxy silicone on natural stone or some metals. None of them last.
Common reasons people contact us are:
- Caulk or the wrong sealant used in a wet area
- Black mould underneath the bead
- Torn expansion joints
- Wide, uneven beads that look worse than the old ones
If you let a flat or house near Knockholt station, a joint that keeps failing is best fixed properly while the property is empty.
Questions to ask before booking
- Is VAT in the price?
- What happens if they find a problem under the old sealant
- Which colour the sealant will be
- What preparation is included
What affects the cost of remedial sealant
We do not publish a price list, because no two jobs are the same. The quote depends on:
- Any mould that needs treating
- Whether the work is at height
- The number and length of the joints
- The product the joint needs
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
What to tell us for a quote
You don’t need to know the technical terms. Just tell us:
- The rough size of the job
- What’s wrong with the joints now
- Photos by email, if that’s easy
- Where the property is
There’s no standard price list, as no two jobs are quite the same. Instead, we send you a clear quote for your job. To get started, phone 0345 464 0079 or send us an email.
Why act early in Knockholt
Remedial work takes longer than a straight reseal, but not by much: it takes a few hours for most joints, depending on how much old sealant has to come out. It’s far less disruption than resealing the same joint again and again. In a small place like Knockholt, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Doing several joints on one visit is usually more efficient than separate visits. You will get one clear quote for the whole job.
Why us?
- ARBOMaster approved applicator
- You choose the colour before work begins
- Experience in homes, commercial sites and hotels
- We never seal over old sealant
Take a look at what affects the cost or what customers say.
How it works
When we arrive, we start by going over the job with you, so you know exactly what we’re doing. Surfaces next to the work are protected before any work begins. The work generally takes a few hours, depending on how many layers have to come out. For a village or hamlet like Knockholt, the journey is planned in advance: 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.
- Surrounding tiles, trays and frames are protected first.
- The botched or failed sealant is cut away completely.
- The joint is degreased and checked for movement and leaks.
- New sealant goes in once the joint is dry, and is tooled smooth.
- You get the cure time and our view on why the joint failed.
Preparing for the visit
- Let us know about parking restrictions
- Tell us about access, such as stairs, a lift or high-level joints
- Where the joints are inside, avoid wetting them before we arrive
Get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. Whenever you’re ready, phone 0345 464 0079 or drop us an email.