Kent · England
External Mastic in Dungate
Problem with your movement joints in Dungate? We remove the old material, prepare the joints and seal them properly.
- Plants rooting in failed movement joints
- Panel joints letting water in
- Weathered mastic that no longer stretches
Can I do it myself?
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
About our external mastic in Dungate
We are ARBOMaster approved applicators, and each external joint gets a sealant suited to it. Porous or awkward surfaces are primed where the sealant needs it and we use one wherever it does. If you’re dealing with plants rooting in failed movement joints and joints where the bead has come unstuck, we can help.
In a village or hamlet like Dungate, older cottages and farm buildings often stand in the open, where walls and rooflines take the weather head on. Gutter joints and wall joints there need a sealant that can flex and stay put.
You’re covered for a year from the day we finish. If there’s a problem with it, please ring 0345 464 0079 or send us an email.
- Place
- Dungate (ME9)
- Wider area
- Kent
- Cover
- 12 months on all our work
- Quote
- A clear price before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Landlords, agents and businesses in Dungate
Failed sealant is one of the commonest items on a check-out report. We can quote for more than one property at once.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Dungate questions
Is Dungate in your area for external mastic?
Yes. Our work covers London and the South East, and Dungate is part of that. Just phone 0345 464 0079 or send us an email with a few details of the job, and we’ll send you a clear quote.
Will you come out to Dungate?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Where are you based?
We work from Crawley. Our applicators cover Dungate.
How long should I leave it?
That depends on the sealant used, so follow the cure time we give you when we finish.
When will the joints need doing again?
It varies with how exposed the wall is and how much the joint moves. Signs to watch for are cracking, hardening and gaps at the edges, and reseal at that point.
Can I do it myself?
Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Can you seal joints between two different materials?
Yes. Materials like render, brick, metal and uPVC all move differently, so a flexible sealant is needed where they meet. The sealant is matched to both sides.
Do the sealants smell?
Some sealants have a smell while they cure, but it fades. Ventilation helps.
Signs you need external mastic in Dungate
UV, rain and frost all age exterior sealant. In time it goes hard, crazes on the surface and stops stretching, so the joint eventually tears or comes away from one side.
People usually contact us after spotting one of these:
- Leaking joints around cladding and façade panels
- Movement joints filled with mortar instead of sealant
- Movement joints with cracked, split or missing sealant
- Old sealant gone brittle and cracked
Rented homes near Sittingbourne station change hands often, and outside joints that have cracked can let damp into a rental, so check them between lets.
Before booking anyone
- Is the old sealant removed completely?
- How the surfaces are prepared before sealing
- Which colour the sealant will be
- The length of the guarantee
How we quote for external mastic
Some jobs are bigger than they look, and some smaller. The main factors:
- Any mould that needs treating
- The size of the job
- How easy the joints are to reach
- Whether old sealant or filler has to be cut out
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference, and we will explain the quote if you ask.
Helping us quote
You don’t need to know the technical terms. Just tell us:
- Where the job is, and your postcode
- Whether it has been sealed before
- The problem you’ve noticed
- How we’d reach the joints
To get a quote, call 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. We’ll give you a clear price before any work starts.
Towns and villages near Dungate
Also in Dungate
Leave it or put it right?
Pointing a movement joint with mortar might seem a neat fix, but it stops the joint moving. The movement then cracks the brickwork or render nearby. A flexible sealant over backing rod is what the joint needs. Older cottages and farmhouses around Dungate can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
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. Call for a quick quote and we will go through it with you.
Why Dungate clients choose us
- Neat joints and a tidy finish
- We are fully insured
- Sealant colour chosen to suit
- One-year guarantee on every job
See our cost guide and what customers say.
What the job involves on each surface
Brickwork movement joints
Clay brickwork grows slightly over its life and moves with the weather. The movement joint takes that up, so its sealant has to stay flexible.
Concrete and blockwork
Concrete faces can be dusty and porous, so cleaning and priming matter. We prime where the sealant needs it.
Outside joints around Dungate
Historic houses like Belmont House and Gardens (about 4.6 miles south-east) are a reminder that the area around Dungate has older buildings as well as new. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material. The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Schools such as Milstead and Frinsted Church of England Primary School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s. Homes close to Church of St Catherine include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant.
Dungate is about 3 miles south of Sittingbourne, in Kent. We carry out external mastic for homeowners, landlords and businesses in Dungate, as part of our work across Kent. Across Kent, we cover 922 places, Dungate among them. Chelmsford is on our list too, about 32 miles from Dungate.
Jobs for external mastic in ME9 is quoted and booked the same way as anywhere else. Nearby, we also carry out external mastic in Newbury (1 mile north-east), Kingsdown (1 mile east), Rodmersham Green (1 mile north), Highsted (1 mile north) and Bapchild (1 mile north-east). We also work in nearby towns such as Maidstone (10 miles west), Ashford (12 miles south-east), Canterbury (14 miles east), Sittingbourne (3 miles north), Whitstable (13 miles east) and Faversham (6 miles east).
Landmarks near Dungate
Around Dungate, our work takes us to homes and buildings near Fulston Manor School and Cromers Wood. For rail, the closest station is Sittingbourne station, roughly 2.9 miles north. A little further out are Sittingbourne Heritage Museum (2.6 miles north) and Newnham Castle (2.5 miles south-east).
How it works
Good joint work is mostly preparation, so that’s where we spend the time. Joints are cleaned back and dried before anything new goes in. In total, it normally takes anything from a few hours to several days, depending on the building. Somewhere like Dungate needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We start by checking each joint, agreeing the ones to redo and how we will reach them.
- Old sealant and any debris are cut and raked out.
- The joint faces are cleaned and primed where the sealant needs it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
Preparing for the visit
- Tell us about any previous sealing or DIY attempts
- Let us know if you’ve seen damp or leaks
- Tell us if parking is tricky
Getting a quote
For a quick quote, get us on the phone, or email us if that is easier. Tell us about the joints that need doing and we will explain what’s involved.