Kent · England
Remedial sealant & repairs in Harbledown, Kent
Removing failed, mouldy or leaking sealant and putting it right for homeowners, landlords and businesses in Harbledown. Fully insured, ARBOMaster approved and guaranteed for a year.
- Over-sealed joints coming away
- Sealant that came away because the surface wasn’t prepared
- Caulk or the wrong sealant used in a wet area
Questions from Harbledown
I let a flat near Canterbury West station. Can you help?
Yes. We work for landlords and agents as well as homeowners, and several properties can be quoted together. 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 Harbledown?
Yes, hotels and guest houses are among the places we work. Rooms can be done a few at a time, so the building stays open.
Can you fix a reseal that hasn’t worked?
Yes. There’s usually a reason: sealant over sealant, movement or another leak, and we deal with the cause first.
Are you fully insured?
Yes. Mr Mastic is fully insured.
Where do you work from?
Our base is in Crawley, and we cover South East England, London and all of Scotland.
How do I get a quote for remedial sealant in Harbledown?
It depends on the job, so we quote each one individually. For a quick quote, phone 0345 464 0079 or send us an email with a short description of the job.
What happens if the problem is the tray or the plumbing?
We check for that before we reseal. If we find the leak is elsewhere, we tell you before going further.
Will the old sealant be removed?
Always. Sealing over the old bead is the commonest cause of early failure, so we never do it.
How we handle remedial sealant in Harbledown
Decorators’ caulk in a shower, bathroom silicone on a window, a rigid filler in a movement joint will not last, however tidy it looks. Out it comes, and in goes a sealant suited to the job. We work on botched or over-sealed joints, leaking tray & enclosure joints and mouldy bath & shower sealant, and common reasons people get in touch are wide, uneven beads that look worse than the old ones and torn expansion joints.
Homes around Harbledown are mostly houses and cottages rather than flats. Sealant and grout wear out here just as they do anywhere: old material cut out, joints cleaned and a fresh finish laid.
There’s a 12-month guarantee on every job.
- Place
- Harbledown (CT2)
- Region
- Kent
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Nearby places to Harbledown
What else we do in Harbledown
Common problems we fix in Harbledown
A lot of failed joints have been sealed over rather than replaced. Silicone doesn’t bond to silicone, so the new layer peels, and damp and mould settle between them.
People generally contact us after spotting one of these:
- Gaps opening along the back of the worktop
- Mould trapped under a layer of silicone
- Sealant that came away because the surface wasn’t prepared
- Decorators’ caulk around a bath or shower
For site and facilities teams at buildings such as The Canterbury Primary School, we reseal washrooms and kitchens in schools and businesses as well as homes.
Questions to ask before you book
- How long the guarantee is
- Is the old sealant removed completely?
- What happens if the job turns out different
- What the quote includes, VAT included or not
Should I try it myself first?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
When it isn’t the sealant
It helps to know what we can’t do too:
- Leaks from a shower valve, waste or pipework (a plumber’s job)
- Movement from fittings that are not supported
- A tray or bath that is cracked
If in doubt, call 0345 464 0079 or drop us an email and we’ll say what we think before booking.
Surfaces we seal
- Shrunken worktop sealant
- Botched or over-sealed joints
- Failed movement joints
- Leaking tray & enclosure joints
- Mouldy bath & shower sealant
- Expansion joints
Why deal with it now?
Another bead over the top will not fix a failed joint. It doesn’t grip the old layer, leaving the leak in place and one more layer to cut out later. In a small place like Harbledown, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
The cost depends on the size of the job, how hard the old material is to remove and access to the work. We give a clear quote before work begins, so you know where you stand.
Why choose Mr Mastic in Harbledown
- Colour picked to suit the job
- Anti-fungal sanitary silicone in wet areas
- An ARBOMaster approved applicator
- White, clear, grey or coloured to suit, where the product allows
Take a look at how sealant jobs are priced or our reviews.
What remedial sealant looks like in Harbledown
There are hotels and other places to stay in and around Harbledown. As well as homes, we work in hotel bathrooms, where resealing and regrouting can be done room by room. Most of the South East has hard water, so limescale builds up on sealant, grout and fittings.
If you let a flat or house near Canterbury West station, failed or mouldy sealant is worth putting right between tenancies, before it turns into a leak. In the older streets around St Michael and All Angels Church, walls and floors in older homes can move, and sealant and grout show it first.
Harbledown is about 1 mile west of Canterbury, in Kent. We provide remedial sealant to homeowners, landlords and businesses in Harbledown and the surrounding area, as part of our work across Kent. Harbledown is one of 922 places in Kent we cover. Chelmsford is on our list too, about 40 miles from Harbledown.
Postcode districts we cover here for remedial sealant: CT2. We cover properties on Lanfranc Gardens, Mill Lane and Church Hill and the roads around them. We also cover Rough Common (1 mile north-west), Wincheap (1 mile south-east), Thanington (1 mile south), Upper Harbledown (1 mile west) and Canterbury (1 mile east). Further out, we also cover Ashford (13 miles south-west), Dover (14 miles south-east), Sittingbourne (15 miles west), Folkestone (14 miles south), Whitstable (5 miles north) and Deal (15 miles east).
Near you in Harbledown
Typical jobs here are in homes near Whitehall Meadows, St Edmund's School and The Monument Inn, among other places. You’ll also find St Thomas of Canterbury Church (1.2 miles east) and The Canterbury Academy (within half a mile south-east). The nearest railway station is Canterbury West station, about 0.8 miles east of the centre. Well-known places in the area include Eastbridge Hospital of St Thomas the Martyr (0.9 miles east) and Sidney Cooper Museum (0.9 miles east). Green spaces nearby include Blean Woods RSPB Reserve.
What affects the cost of remedial sealant
The quote reflects the job in front of us. We look at:
- Whether old sealant or filler has to be cut out
- The type of sealant required
- How many areas need sealing
- The amount of work
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, along with when we can work on site. Ask us for a quote and we’ll explain what it covers.
What to tell us for a quote
You do not need to know the technical terms. Just tell us:
- How many joints, rooms or windows are involved
- If it’s domestic, commercial or a hotel
- Any access issues, like height or stairs
- Where the property is
To get a quote, phone 0345 464 0079 or email us with the location and a short description of the problem. We’ll give you a clear price before any work starts.
How it works
We keep the work tidy and contained to the joints we’re treating. The job generally takes a few hours for most joints, depending on how much old sealant has to come out, and we explain the cure time before we leave. In a small place like Harbledown, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We protect the surfaces around the joint.
- Every layer of failed sealant is stripped out.
- We clean and degrease the joint and look for signs of movement or water.
- New sealant goes in once the joint is dry, and is tooled smooth.
- We give you the cure time and explain what caused the failure.
Before we arrive
- Tell us about any water getting in
- Tell us if parking is tricky
- Let us know about stairs, lifts or work at height
Ask for a quote
Want a quote for remedial sealant? Please phone 0345 464 0079 or drop us an email and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Read more
How to look after the new joints
Joint life depends on how it’s used and looked after. We suggest:
- Do not point over movement joints
- Deal with small splits early
- Always have old sealant cut out, not covered
- Run the fan after every shower
Keep an eye on the joint at first, especially if movement was the problem. If anything changes, just ring 0345 464 0079 or send us an email.
A failing joint rarely gets better on its own. Each use pushes more water behind the bead, into whatever is behind or below. Early action keeps it to a sealant job.