Kent · England
Teston External Mastic
External mastic in Teston from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Damp patches traced to an open external joint
- Movement joints with cracked, split or missing sealant
- Joints where the bead has come unstuck
What affects the quote in Teston
Some jobs are bigger than they look, and some smaller. What affects the quote:
- How easy the joints are to reach
- The number and length of the joints
- The product the joint needs
- The number of rooms or windows
Commercial jobs are quoted on the same basis as homes: 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.
Helping us quote
You do not need to know the technical terms. It helps if you can tell us:
- Where the property is
- What’s wrong with the joints now
- Roughly how big the job is
- Whether it’s a home or a business
If you’re in Teston and need external mastic, phone 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and you’ll get a clear quote before we start.
External mastic for homes and businesses in Teston
Failed sealant is cut out, the depth set with closed-cell backing rod, and the joint resealed with a low-modulus sealant made for outside. We pick a colour that sits well with the wall so the joint doesn’t stand out. We work on concrete & block, façade panels and render & cladding joints, and the jobs we see most are plants rooting in failed movement joints and old sealant gone brittle and cracked.
External sealant needs dry, clean surfaces, so work around Teston is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we’ll put it right.
- Place
- Teston (ME18)
- Region
- Kent
- Guarantee
- A year, on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Other services in Teston
Teston: your questions answered
Do you work for landlords with property near Wateringbury station?
Yes, we work for landlords and letting agents. You can ring 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before work begins.
Will you come out to Teston?
Yes, Teston is covered. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
When is the sealant fully cured?
Many sealants skin over quickly but take longer to cure fully. We will tell you how long to leave the joint before we leave.
Can you seal joints between two different materials?
Yes. Joints between dissimilar materials are a big part of external work. We use a flexible sealant suited to both surfaces.
Do I need to be at home?
For indoor joints, yes, someone needs to let us in. Once we’ve agreed the job, you don’t need to watch us work.
Do you take out the old sealant first?
Yes, always, and completely. New sealant won’t bond properly to old, so any old material comes out before anything new goes in.
Will you leave a mess?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
How long does external mastic last?
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.
Looking after it afterwards
Looking after new joints is easy, and it makes a real difference:
- Have failed joints looked at early
- Make sure movement joints aren’t pointed over
- Keep water from gutters off the wall
- Avoid pressure-washing directly into sealant joints
Give the sealant the cure time we tell you before anything rubs against it. Most exterior sealants skin fast but take longer to cure right through.
Gaps, plants or missing sealant in a joint are worth getting looked at. Early work is quicker and leaves a better finish.
What happens if it’s left?
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. The correct repair is a flexible sealant with the right backing. Where a wall is exposed, as many are in small places like Teston, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
What you get with us
- Fully insured
- Colour agreed with you before we start
- Quality sealants from Arbo and Everbuild
- Homes, businesses and hotels
Take a look at our cost guide and what customers say.
External mastic in Teston: local notes
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you let a flat or house near Wateringbury station, failed wall and movement joints let damp in, so they’re worth checking between tenancies. If you live in an older home near Church of St Peter and St Paul, an extension built onto an older house moves differently, and the joint between them takes the strain.
Teston is about 4 miles west of Maidstone, in Kent. For external mastic in and around Teston, please call 0345 464 0079 or email us for a quick quote. We cover Kent from our Crawley base, Teston included. Our Kent coverage runs to 922 places, and Teston is one of them. Our London page covers work nearby.
Postcode districts we cover here for external mastic: ME18. Local streets include The Street, Courtlands and Church Street, all of which we cover. Nearby, we also carry out external mastic in Red Hill (1 mile north-west), West Farleigh (1 mile south-east), Wateringbury (1 mile west), Barming Heath (1 mile east) and Hoppers Corner (1 mile east). Further out, we also cover Maidstone (4 miles east), Sittingbourne (14 miles north-east), Sevenoaks (11 miles west), Royal Tunbridge Wells (11 miles south-west), Gravesend (12 miles north) and Tonbridge (8 miles south-west).
Local landmarks in Teston
We work in homes and buildings around The Wateringbury pub, The Malling School and Quarry Wood. The closest station to Teston is Wateringbury station, roughly 0.9 miles south-west. A little further out are Oakwood Hospital (2.1 miles north-east) and Teapot Island (2.6 miles south-west).
When it isn’t the sealant
Sealant is not the answer to every problem, and we’ll tell you before we start. Sealant won’t put right:
- Structural movement, which needs a surveyor or engineer
- Loose or hollow render, which needs re-rendering
- Cracked brickwork or render that needs a builder or plasterer
Not sure which it is? You can call 0345 464 0079 or send us an email and we’ll tell you honestly.
What we seal
- Render & cladding joints
- Façade panels
- Brickwork movement joints
- Concrete & block
- Joints between brick and frames
- Copings & trims
Different surfaces, different methods
Concrete and blockwork
Blockwork and concrete shrink over time and move with the seasons. Their movement joints are sealed over backing rod with a flexible sealant.
Cladding and façade panels
Panel systems often rely on sealant between and around the panels. Each joint gets a sealant that suits the panel and its movement.
What happens on the day
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours for a handful of joints, longer for a whole elevation and we leave things clean and tidy. For a village or hamlet like Teston, the journey is planned in advance: 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 walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- The faces are brushed clean and primed where the product requires it.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
Getting ready for the visit
- Clear items away from the joints we are working on
- For business premises, tell us about site rules or sign-in
- Keep pets and children clear of the area while we work
Get a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email photos if that’s easy.
Related advice
When to call us in Teston
Poor preparation causes many early failures: joint faces that were dusty or damp, unprimed where they needed it, or still carrying old sealant. The sealant never bonds properly.
These are the problems we’re asked about most:
- Joints pointed up with cement by mistake
- Weathered mastic that no longer stretches
- Failed sealant between panels on a façade
- Gaps where render, brick and frames meet
Schools such as Wateringbury Church of England Primary School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing.
Comparing quotes
- Which colour the sealant will be
- Whether all the old sealant comes out first
- What happens if they find a problem under the old sealant
- What the cure time is