Kent · England
External & façade joints in Dunkirk, Kent
Sealing brickwork movement joints, render, cladding and façade joints for householders, landlords and businesses in Dunkirk. Fully insured, ARBOMaster approved and guaranteed for a year.
- Panel joints letting water in
- Joints pointed up with cement by mistake
- Joints with sealant missing in places
What happens on the day
All our tools and materials come with us in the van, so there’s nothing for you to buy. Once we’ve agreed what’s being done, the area is protected and the work begins. It normally takes a few hours for a handful of joints, longer for a whole elevation. Somewhere as small as Dunkirk, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First we look over the joints with you, agree which to renew and talk through access.
- The old mastic and anything lodged in the joint is removed.
- The joint faces are cleaned and primed where the sealant needs it.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Preparing for the visit
- For business premises, tell us about site rules or sign-in
- Keep pets and children clear of the area while we work
- Let us know about earlier repairs to the joints
Get a quote
Want a quote for external mastic? Please phone 0345 464 0079 or send us an email and tell us about the job. We will explain what we’d do and send you a clear quote before we start.
Related advice
About our external mastic in Dunkirk
Getting the depth right is half the job. Closed-cell backing rod sets the depth and stops the sealant sticking to the back, leaving it bonded to two faces so it can move with the wall. Typical jobs include leaking joints around cladding and façade panels and damp patches traced to an open external joint, on concrete & block, copings & trims and render & cladding joints.
Somewhere as small as Dunkirk, homes and farm buildings often face open ground, where walls and rooflines take the weather head on. Gutter joints and wall joints there need a sealant that can flex and stay put.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Place
- Dunkirk (ME13)
- Wider area
- Kent
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
External mastic in Dunkirk: local notes
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you live in an older home near Christ Church, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Dunkirk is about 4 miles south-east of Faversham, in Kent. Dunkirk gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Across Kent, we cover 922 places, Dunkirk among them. Chelmsford is on our list too, about 37 miles from Dunkirk.
We work across the ME13 postcode area for external mastic and the streets around it. Local streets include London Road and Courtenay Road, all of which we cover. If you are just outside Dunkirk, we cover Boughton under Blean (1 mile west), Winterbourne (1 mile south-west), Hickmans Green (1 mile west), Oversland (1 mile south-west) and South Street (2 miles south-west). Within a short drive, we also cover Ashford (12 miles south-west), Canterbury (5 miles east), Sittingbourne (11 miles west), Whitstable (5 miles north-east), Faversham (4 miles north-west) and Herne Bay (9 miles north-east).
Near you in Dunkirk
We work in homes and buildings around The Red Lion pub and Mount Ephraim Gardens, among other places. The closest station to Dunkirk is Selling station, about 1.9 miles south-west of the centre. Other landmarks nearby include Chilham Castle (3.5 miles south) and Eastbridge Hospital of St Thomas the Martyr (4.4 miles east). The countryside around Dunkirk includes Blean Woods RSPB Reserve.
DIY sealant or a professional job?
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
A DIY attempt does not rule out a professional job. We cut it out and start again, so just mention it when you contact us.
Signs you need external mastic in Dunkirk
Sometimes a movement joint was filled with mortar or a rigid filler by mistake. With the joint locked solid, the movement turns into cracks elsewhere in the wall.
Keep an eye out for any of the following:
- Weeds or debris growing in open joints
- Panel joints letting water in
- Joints where the bead has come unstuck
- Hard, crazed mastic that has stopped moving
Letting a property close to Selling station? Then outside joints that have cracked can let damp into a rental, so check them between lets.
What to look for in a quote
- What product goes in the joint
- When the joint can take water or movement
- Is the old sealant removed completely?
- The length of the guarantee
Common questions in Dunkirk
Do you cover smaller places like Dunkirk?
Yes, we do. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
I let a flat near Selling station. Can you help?
Yes. We work for landlords and agents as well as householders. Just phone 0345 464 0079 or email us with the address and what needs doing, and we’ll send you a clear quote.
Is the work guaranteed?
Yes, for a year. If there’s a problem with our work in that time, tell us and we’ll put it right.
Do you have insurance?
Yes. Full insurance covers our work.
How do I get a quote for external mastic in Dunkirk?
Every job is different, so each one gets its own quote. For a quick quote, call 0345 464 0079 or send us an email with a short description of the job.
Should I point up the gap in my brickwork?
No. A mortar-filled joint can’t move, so the wall cracks somewhere else instead. Use a flexible sealant with backing rod.
What’s an expansion joint in brickwork?
Brickwork, render and cladding all move a little, and planned joints take up that movement. The gap is sealed with a flexible sealant over backing rod.
Will you leave a mess?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
Surface by surface
Joints between dissimilar materials
Each side of the joint may need its own preparation. Both surfaces are cleaned and primed as the product requires.
Render joints
Render has movement joints and stop beads that need sealing. They’re resealed in a sealant that suits the render.
Work for landlords, hotels and businesses
We also work for property managers and facilities teams. We can quote a run of properties together, and we are fully insured for the work.
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
What sealant work cannot fix
In fairness, some problems need a different trade:
- Subsidence or other structural problems
- Render that’s blown, hollow or coming away
- Cutting new joints into brickwork, which is building work rather than sealant work
Not sure which it is? You can phone 0345 464 0079 or email us and we will tell you honestly before booking.
What we seal
- Render & cladding joints
- Brickwork movement joints
- Joints between brick and frames
- Copings & trims
- Concrete & block
- Façade panels
Towns and villages near Dunkirk
Other services in Dunkirk
What affects the quote in Dunkirk
We do not publish a price list. The quote depends on:
- Any mould that needs treating
- Any working-time requirements on site
- The number and length of the joints
- How many rooms, windows or areas are involved
A few things move the cost up or down: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
Helping us quote
Photos help, but a description is a good start. Try to tell us:
- Where the job is, and your postcode
- If it’s domestic, commercial or a hotel
- How many joints, rooms or windows are involved
- Any previous sealing or DIY work
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints.