Kent · England
External Mastic in Tonge Corner
Problem with your movement joints in Tonge Corner? We cut out the old, prepare the joints and apply the right sealant.
- Damp patches traced to an open external joint
- Failed seals between different materials
- Sealant that has lost its bond to the brick or render
How we handle external mastic in Tonge Corner
External mastic is a job where short cuts show quickly. New sealant over old, joints packed with mortar and beads with no backing all tend to fail early. We strip the joint back and start again. If you have failed sealant between panels on a façade and movement joints with cracked, split or missing sealant, we can help, on render & cladding joints, copings & trims and façade panels alike.
Somewhere as small as Tonge Corner, homes and farm buildings often face open ground, so walls and rooflines take the full force of wind and rain. Joints on those walls need a sealant that moves with the building and stays in place.
Whatever the size of the job, it’s backed by our one-year guarantee in Tonge Corner and across Kent.
- Place
- Tonge Corner (ME9)
- Region
- Kent
- Cover
- One year on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What external mastic looks like in Tonge Corner
Tonge Corner is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you live in an older home near Church of St Giles, the joints between older walls, newer extensions and the roofline need a sealant that can move. Schools such as Lansdowne Primary School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Tonge Corner is about 2 miles east of Sittingbourne, in Kent. For external mastic in and around Tonge Corner, please call 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover Kent. Across Kent, we cover 922 places, and Tonge Corner is one of them. We also work in Chelmsford, around 30 miles away.
Here we cover the ME9 postcode area for external mastic. Close by, we work in Tonge (1 mile north), Radfield (1 mile south), Murston (1 mile west), Milton Regis (1 mile west) and Rodmersham (2 miles south). Larger places within reach include Maidstone (12 miles south-west), Ashford (15 miles south), Canterbury (14 miles east), Whitstable (11 miles east), Faversham (5 miles south-east) and Minster (5 miles north).
Landmarks near Tonge Corner
Around Tonge Corner, our work takes us to homes and buildings near Sittingbourne Community College and Milton Creek Country Park. Tonge Corner’s nearest station is Teynham station, roughly 1.5 miles south-east of the centre. Nearby you will also find Dolphin Sailing Barge Museum (1.4 miles west) and Bayford Court (1.4 miles west).
Signs you need external mastic in Tonge Corner
Every building moves. Brickwork grows a little over the years, blockwork and concrete shrink, and all of it moves with heat and moisture. The sealant in the movement joints takes that strain.
If you can see any of these, it’s time to have the joints looked at:
- Water getting into walls through failed joints
- Failed seals between different materials
- Sealant pulling away from one side of the joint
- Brick movement joints where the sealant has split
Rented homes near Teynham station change hands often, and split movement joints are easy to miss on a rental until damp shows inside.
What to look for in a quote
- What the cure time is
- What product goes in the joint
- What preparation is included
- The length of the guarantee
How it works
On the day, we look over the joints with you first. Surfaces next to the work are protected before any work starts. The work usually takes a few hours for a handful of joints, longer for a whole elevation. In a small place like Tonge Corner, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We look at every joint and agree a colour to suit the wall.
- 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.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Before we arrive
- Tell us about any water getting in
- Tell us about any previous sealing or DIY attempts
- Keep children and pets away from the work area
Ask for a quote
Want a quote for external mastic? Please ring 0345 464 0079 or email us with a few details. We’ll explain what we’d do and give you a clear quote before any work starts.
Related advice
Tonge Corner questions
Do you work for landlords with property near Teynham station?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before work begins.
Do you cover smaller places like Tonge Corner?
Yes, Tonge Corner is covered. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
What colours does the sealant come in?
The aim is a neat, even joint in a colour that suits the wall. We will talk through colour options before any work starts.
Which products do you use?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference, and we will tell you what we’re using.
Does someone need to be in?
For indoor joints, yes, someone needs to let us in. Once we’ve agreed the job, you don’t need to watch us work.
Can you reach joints on upper floors?
It depends on the height and the site. Ground-floor joints are simple; for higher work, tell us about the building and we will confirm what’s needed.
When will the joints need doing again?
There’s no fixed answer: sunny, exposed elevations and busy joints wear faster. A yearly look will tell you when they need doing. Every job carries our one-year guarantee.
Can a movement joint be filled with mortar?
No. Rigid materials can’t move with the wall. If it has already been filled, we can normally cut it out and reseal it.
Nearby places to Tonge Corner
Also in Tonge Corner
Landlord and commercial work in Tonge Corner
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. We can quote for more than one property at once.
What affects the cost of external mastic
Call for a quick quote. The main things that affect it are:
- The product the joint needs
- Whether there’s mould to deal with
- The number and length of the joints
- The number of rooms or windows
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all play a part, and we’ll explain the quote if you ask.
What to tell us for a quote
What to tell us when you ask for a quote:
- A few pictures by email, if you can
- What’s wrong with the joints now
- The rough size of the job
- Access, such as stairs, a lift or height
Getting a quote is simple: tell us what needs doing and where and its rough size. Photos by email help us understand the job.
How to look after the new joints
Joint life depends on how it’s used and looked after. We suggest:
- Look over the joints every year, ideally after winter
- Make sure movement joints aren’t pointed over
- Point out the joints to other trades
- Avoid pressure-washing directly into sealant joints
Make sure anyone working on the wall later knows where the movement joints are. They must stay as flexible joints, never rendered or pointed over.
Once a joint cannot move, the wall finds another way, normally as cracking in the brickwork or render nearby. Resealing it early helps prevent that.
DIY versus a professional finish
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
Surface by surface
Brickwork movement joints
Brick walls have vertical movement joints to absorb expansion. They’re resealed over backing rod with a low-modulus sealant in a colour to suit the brick.
Concrete and blockwork
Blockwork and concrete shrink over time and move with the seasons. We reseal their joints with backing rod and a flexible product.