East Sussex · England
External & façade joints in Kent Street, East Sussex
Problem with your movement joints in Kent Street? We cut out the old, prepare the joints and apply the right sealant.
- Gaps where render, brick and frames meet
- Movement joints filled with mortar instead of sealant
- Plants rooting in failed movement joints
How we quote for external mastic
Jobs vary more than people expect. The main factors:
- The product the joint needs
- Working hours on commercial sites
- The number and length of the joints
- Whether there’s mould to deal with
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all make a difference.
Asking for a quote
When you contact us, these details help:
- How we’d reach the joints
- A few pictures by email, if you can
- The type of property
- Roughly how big the job is
It all starts with a short chat. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. Whenever you’re ready, call 0345 464 0079 or send us an email.
External mastic in Kent Street, done properly
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. We work on joints between brick and frames, copings & trims and brickwork movement joints, and people most often call us about joints pointed up with cement by mistake and leaking joints around cladding and façade panels.
Older homes in small places like Kent Street may be stone, brick or timber-framed, often with later extensions. The joints where those materials meet are the weak points.
Every job comes with our 12-month guarantee.
- Where
- Kent Street (TN33)
- Region
- East Sussex
- Guarantee
- A year, on every job
- Price
- A clear price before we start
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Kent Street questions
I let a flat near Battle station. Can you help?
Yes. We work for landlords and agents as well as householders, and several properties can go on one quote. Just phone 0345 464 0079 or email us with the address and what needs doing, and we’ll give you a clear price.
Is Kent Street in your area for external mastic?
Yes, Kent Street is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or send us an email and tell us what needs doing.
How long should I leave it?
Different products cure at different speeds, so follow the cure time we give you when we finish.
Can you match the colour of my brickwork?
Exterior sealants are made in a range of colours, from greys and browns to whites and stone shades. We pick the one that suits your wall best so it doesn’t stand out.
Where are you based?
Our base is Crawley. We work across South East England, London and Scotland.
How do I get a quote for external mastic in Kent Street?
Size, access and the old material all affect the cost. Ask us for a quote and we will talk you through it.
Can you quote for more than one area?
Yes. Just list everything you need and you will get one quote.
How long does external mastic last?
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.
Aftercare tips
So the new joints stay in good condition:
- Check external joints each spring
- Check the sealant is paintable before painting near it
- Act on the first splits you see
- Fix overflowing gutters above sealed joints
Keep pressure washers away from the sealant. High-pressure water can lift the edges and let water in behind.
Leaks behind façade panels and render often go unseen. When it finally shows inside, the joint may have been open for years.
How it works
There’s no need to move everything out, just the space around the work. Everything nearby is protected, and the work takes a few hours to a few days, depending on the length of joint and the access for a typical job. Somewhere like Kent Street needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- 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
- Let us know about earlier repairs to the joints
- Keep children and pets away from the work area
- Clear items away from the joints we are working on
Ask for a quote
Every job is quoted individually. Just phone 0345 464 0079 or email us with the details and send photos if you have them.
Read more
DIY versus a professional finish
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
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.
Outside joints around Kent Street
Historic houses like Durhamford Manor (about 2.2 miles north-west) are a reminder that the area around Kent Street has older buildings as well as new. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you look after a building such as Ark Helenswood Academy, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. Durhamford Manor, about 2.2 miles north-west, is one of the historic houses in the wider area around Kent Street, and older homes nearby need a sealant that suits their walls.
Kent Street is about 3 miles north of Hastings, in East Sussex. Across the TN33 area, we can carry out external mastic at your property. We cover 289 towns and villages across East Sussex, from the larger towns to small villages. You can also see our page for Brighton, roughly 30 miles from Kent Street.
All of TN33 is covered for external mastic. Other places close to Kent Street include Westfield (1 mile east), Telham (2 miles west), Sedlescombe (2 miles north), Whatlington (2 miles north-west) and Brede (3 miles north-east). Further out, we also cover Eastbourne (14 miles south-west), Hastings (3 miles south), Bexhill-on-Sea (6 miles south-west), Hailsham (13 miles west), St Leonards (4 miles south) and Polegate (14 miles south-west).
Near you in Kent Street
The closest station to Kent Street is Battle station, roughly 2.2 miles west. A little further out are Hastings Castle (4.3 miles south-east) and Conquest Hospital (2.2 miles south-east). The countryside around Kent Street includes Senlac Hill and Church Wood and Robsack Wood.
Different surfaces, different methods
Brickwork movement joints
Clay brickwork grows slightly over its life and moves with the weather. The movement joint takes that up, so the sealant in it must stay soft and stretchy.
Joints between dissimilar materials
Brick against render, concrete against metal, stone against timber: every change of material is a joint. A flexible sealant bridges the two.
Towns and villages near Kent Street
More services for Kent Street
When something else is needed
New sealant can’t fix everything, and we will tell you before any work starts. Sealant won’t put right:
- Loose or hollow render, which needs re-rendering
- Rising or penetrating damp from elsewhere in the wall
- Movement that is more than a sealant joint can take
If you are not sure, just call 0345 464 0079 or drop us an email and we will give you a straight answer.
Where we work in Kent Street
- Brickwork movement joints
- Copings & trims
- Concrete & block
- Joints between brick and frames
- Façade panels
- Render & cladding joints
Do you need external mastic in Kent Street?
Buildings move more than people expect. Clay bricks expand slightly over their life, concrete and block shrink, and everything moves with temperature and wet. The sealant in the movement joints takes that strain.
Signs it’s time to call us include:
- Old sealant gone brittle and cracked
- Water getting into walls through failed joints
- Moss and dirt in joints with no sealant left
- Panel joints letting water in
For landlords with property near Battle station, split movement joints are easy to miss on a rental until damp shows inside.
Comparing quotes
- Which colour the sealant will be
- Who does the work, and how experienced they are
- How the surfaces are prepared before sealing
- What guarantee comes with the work