Kent · England
External Mastic in Kenardington
Problem with your movement joints in Kenardington? We cut out the old, prepare the joints and apply the right sealant.
- Leaking joints around cladding and façade panels
- Plants rooting in failed movement joints
- Weathered mastic that no longer stretches
External mastic in Kenardington
Ground-floor and low-level joints are straightforward to reach. Where joints are higher up, tell us about the building when you get in touch and we will confirm what access is needed. Common call-outs are for weathered mastic that no longer stretches and cracked joints where brick meets render or frames, on concrete & block, brickwork movement joints and copings & trims.
Around Kenardington, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water normally gets in, and they need the right sealant at the right depth.
Your job is guaranteed for a year, as with all our work.
- Where
- Kenardington (TN26)
- Wider area
- Kent
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What happens if it’s left?
Sealing over the top of old mastic does not hold for long. The new layer cannot bond properly to old, weathered material, so the old joint is cut out fully first. Older cottages and farmhouses around Kenardington can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
What it costs depends on the size of the job, how much old material has to come out and how easy the joints are to reach. We give a clear quote before we start, so you know where you stand.
Why us?
- White, clear, grey or another colour, product permitting
- 180+ five-star Google reviews
- An ARBOMaster approved applicator
- 12-month guarantee on every job
Read our cost guide and our reviews.
How it works
When we get to you, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. Most jobs then take anything from a few hours to several days, depending on the building. Somewhere as small as Kenardington, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
Getting ready for the visit
- Move anything stored near the joints
- Tell us about any water getting in
- Mention any sign-in or site rules at work premises
Ask for a quote
To get a quote, ring 0345 464 0079 or email us and tell us where the job is and what the problem looks like. We’ll give you a clear price before any work starts.
Advice
Landlords, agents and businesses in Kenardington
We also work for property managers and facilities teams. We can quote a run of properties together, and we’re fully insured for the work.
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
What else we do in Kenardington
What external mastic looks like in Kenardington
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Letting a property close to Appledore (Kent) station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Kenardington is about 6 miles south-west of Ashford, in Kent. We carry out external mastic for householders, landlords and businesses in Kenardington and the surrounding area. Our area takes in 922 places across Kent, large and small. There’s also a page for Crawley, about 44 miles away.
All of TN26 is within our area for external mastic, from the main roads to the quietest streets. Neighbouring places we cover for external mastic include Hamstreet (2 miles east), Orlestone (2 miles north-east), Snargate (3 miles south-east), Bromley Green (3 miles north-east) and Ruckinge (3 miles east). We also work in nearby towns such as Ashford (6 miles north-east), Folkestone (15 miles east), Hythe (12 miles east), Tenterden (5 miles west), Cheriton (14 miles east) and Kennington (8 miles north-east).
Landmarks near Kenardington
Typical jobs here are in homes near World's Wonder pub and the streets around them. For rail, the closest station is Appledore (Kent) station, about 1.8 miles south of the centre. Other landmarks nearby include Woodchurch Village Life Museum (2.7 miles north-west). Open spaces near Kenardington include Orlestone Forest.
When it isn’t the sealant
Some problems need a builder, plumber or other trade rather than us:
- Rising or penetrating damp from elsewhere in the wall
- Subsidence or other structural problems
- Loose or hollow render, which needs re-rendering
If in doubt, phone 0345 464 0079 or send us an email and we will say what we think.
What we seal
- Façade panels
- Joints between brick and frames
- Copings & trims
- Render & cladding joints
- Concrete & block
- Brickwork movement joints
Your questions about external mastic in Kenardington
Can you do external mastic in Kenardington?
Yes. We work across London and the South East, and Kenardington is part of that. You can call 0345 464 0079 or drop us an email and let us know what needs doing.
Do you work for landlords with property near Appledore (Kent) station?
Yes. We work for letting agents and landlords as well as homeowners. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear quote.
Where are you based?
Our base is in Crawley, and we cover South East England, London and all of Scotland.
What information do you need?
Only a few details: where it is, what you’ve noticed and how we reach it. After that, simply call 0345 464 0079 or drop us an email.
What sealant do you use?
Each joint gets the product that suits it. Movement, water and weather all affect the choice.
Does someone need to be in?
For indoor joints, yes, someone needs to let us in. After that, you can carry on with your day.
Are you insured?
Yes. Mr Mastic is fully insured, and we’ve been doing sealant work for more than 20 years.
Do you remove the old sealant?
Yes. We cut out all the old sealant and clean the joint before resealing.
Common problems we fix in Kenardington
Joints sealed without backing rod, or far too deep, rarely last. If the sealant sticks to the back as well as the sides, it can’t stretch and rips as the joint opens.
Keep an eye out for any of the following:
- Rain getting behind render or cladding at a joint
- Brick movement joints where the sealant has split
- Weathered mastic that no longer stretches
- Joints where the bead has come unstuck
In the older streets around Church of St Mary, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Comparing quotes
- How much experience the applicator has
- What guarantee comes with the work
- Is the old sealant removed completely?
- What the cure time is
Aftercare tips
How long the joints last depends on use and care. Here’s what we suggest:
- Keep soil, plants and ivy away from the joints
- Check external joints each spring
- Never let anyone fill a movement joint with mortar
- Tell anyone working on the walls about the movement joints
Make sure anyone working on the wall later knows where the movement joints are. They should be kept open and resealed, not filled.
Leaks behind façade panels and render often go unseen. By the time there’s a damp patch, the damage can be well established so early resealing is worth it.
How the job changes by surface
Copings and trims
Metal and stone copings both move with temperature, so the joints need a sealant that stays flexible year round.
Render joints
The face of render can be soft, so a sealant that stretches easily protects the edges. Priming is done where the sealant calls for it.