Kent · England
External & façade joints in Highsted, Kent
External mastic for Highsted and the surrounding area: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Water getting into walls through failed joints
- Moss and dirt in joints with no sealant left
- Movement joints with cracked, split or missing sealant
How we handle external mastic in Highsted
A movement joint is only as good as its depth. Backing rod controls how deep the sealant goes and keeps it off the back of the joint, so it bonds to the two sides only and can stretch. We work on joints between brick and frames, brickwork movement joints and render & cladding joints, and people most often call us about movement joints filled with mortar instead of sealant and weathered mastic that no longer stretches.
Around Highsted, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water generally gets in, and they need the right sealant at the right depth.
All our work comes with a 12-month guarantee, wherever you are in Kent.
- Place
- Highsted (ME9)
- Region
- Kent
- Guarantee
- A year, on every job
- Quote
- A clear price before work begins
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Why it’s worth doing now in Highsted
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. Around Highsted, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all play a part.
Why Highsted customers choose us
- Anti-fungal silicone where joints get wet
- Trusted Arbo and Everbuild sealants
- We never seal over old sealant
- Rated 4.9 stars on Google
Read what affects the cost or our reviews.
Places near Highsted
Other services in Highsted
Highsted buildings and the weather
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For landlords with property near Sittingbourne station, outside joints that have cracked can let damp into a rental, so check them between lets. Schools such as Rodmersham School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s.
Highsted is about 2 miles south of Sittingbourne, in Kent. For external mastic in and around Highsted, please call 0345 464 0079 or send us an email for a quick quote. We are based in Crawley and cover Kent, Highsted included. Our Kent coverage runs to 922 places, Highsted among them. Our Chelmsford page covers work nearby (31 miles or so).
Jobs for external mastic in ME9 works the same way as everywhere else we cover. You’ll find streets such as Stockers Hill and Highsted Road. Close by, we work in Rodmersham Green (1 mile east), Rodmersham (1 mile east), Tunstall (1 mile west), Bapchild (1 mile east) and Dungate (1 mile south). We also work in nearby towns such as Maidstone (10 miles west), Ashford (13 miles south-east), Canterbury (15 miles east), Whitstable (13 miles east), Faversham (6 miles east) and Minster (7 miles north).
Landmarks near Highsted
Typical jobs here are in homes near Fulston Manor School and Cromers Wood. The closest station to Highsted is Sittingbourne station, roughly 1.6 miles north. Well-known places in the area include Sittingbourne Heritage Museum (1.4 miles north) and Bayford Court (1.7 miles north).
Do you need external mastic in Highsted?
Some movement joints have been pointed up with mortar. The joint can’t move, so the wall cracks somewhere else instead.
The problems people normally mention when they call are:
- Failed seals between different materials
- Water getting into walls through failed joints
- Joints where the bead has come unstuck
- Joints with sealant missing in places
In the older streets around Church of St Nicholas, older walls, gutters and the joints where extensions meet them need a flexible sealant.
What your quote should include
- Who turns up on the day
- What guarantee comes with the work
- What preparation is included
- Whether all the old sealant comes out first
Highsted: your questions answered
Do you cover smaller places like Highsted?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Do you cover Highsted for external mastic?
Yes, Highsted is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or email us with a few details of the job, and we will give you a clear quote.
Can I do it myself?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.
How long does the job take?
As a guide, most jobs take a few hours to a few days, depending on the length of joint and the access. Bigger jobs take longer, and we’ll tell you how long to expect.
Can you match the colour of my brickwork?
The aim is a neat, even joint in a colour that suits the wall. We’ll talk through colour options before any work starts.
Can new sealant go over the old?
No. Fresh sealant doesn’t stick to old sealant, and anything trapped underneath, including mould and water, stays there. We remove it all first.
Which products do you use?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference, and we’ll tell you what we are using.
Will you leave a mess?
No. We protect the surfaces around the joints, and we tidy up before we go.
Surface by surface
Copings and trims
Metal and stone copings both move with temperature, so the joints need a sealant that stays flexible in all weathers.
Brickwork movement joints
Vertical joints in long brick walls let the brickwork expand without cracking. We reseal them with a low-modulus sealant over backing rod.
Can I do it myself?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
Looking after it afterwards
Once the sealant has cured, a few habits help it last:
- Tell anyone working on the walls about the movement joints
- Keep soil, plants and ivy away from the joints
- Avoid pressure-washing directly into sealant joints
- Have failed joints looked at early
Have a quick look at the joints each spring. Watch for splits, edges coming away or growth in the joint.
Leave a failed movement joint and water keeps getting into the wall. That can lead to damp patches, staining and frost damage.
What sealant work can’t fix
It helps to know what we cannot do:
- Subsidence or other structural problems
- Damp that isn’t coming from the joint
- Render that is blown, hollow or coming away
Not sure which it is? You can call 0345 464 0079 or send us an email and we’ll tell you honestly before booking.
Joints and surfaces we work on
- Façade panels
- Concrete & block
- Render & cladding joints
- Joints between brick and frames
- Copings & trims
- Brickwork movement joints
How it works
There’s no need to move everything out before we come, only the area right around the joints. We protect the rest, and the job takes anything from a few hours to several days, depending on the building for a typical job. Somewhere as small as Highsted, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- The old mastic and anything lodged in the joint is removed.
- Both sides are cleaned back to sound material and primed if needed.
- 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.
Getting ready for the visit
- Tell us about any previous sealing or DIY attempts
- Plan for the work area to be out of bounds to pets and children
- Move anything stored near the joints
Get a quote
We do not publish a price list. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or email us.