Kent · England
External & façade joints in Southborough, Kent
We cover Southborough for sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly.
- Rigid filler in a joint that should flex
- Panel joints letting water in
- Rain getting behind render or cladding at a joint
External mastic for homes and businesses in Southborough
External mastic is a job where short cuts show quickly. New sealant over old, joints packed with mortar and beads with no backing rarely last long. We strip the joint back and start again. We work on brickwork movement joints, façade panels and render & cladding joints, and common reasons people get in touch are damp patches traced to an open external joint and moss and dirt in joints with no sealant left.
Around Southborough, garages, outbuildings and extensions all add to the joints on the outside of a home. Leaks usually start at a gutter end, a garage door frame or where an extension meets the house.
Our work is backed for twelve months.
- Where
- Southborough (TN4, TN2)
- Wider area
- Kent
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Signs you need external mastic in Southborough
Sunlight, wet weather and frost wear exterior sealant down. Over the years it hardens, cracks on the surface and loses its give, so the next time the wall moves, it splits or pulls away.
It’s worth asking for a quote if you see:
- Brick movement joints where the sealant has split
- Failed seals between different materials
- Failed sealant between panels on a façade
- Moss and dirt in joints with no sealant left
Schools such as Southborough CofE Primary School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing.
What your quote should include
- Whether you can choose the colour
- Who turns up on the day
- Whether the sealant suits the joint
- What happens if the job turns out different
Should I try it myself first?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Landlords, agents and businesses in Southborough
Mouldy or split sealant often shows up at the end of a tenancy. We can quote for more than one property at once.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements.
Surface by surface
Cladding and façade panels
Cladding and façade panels are usually separated by sealed joints. Each joint gets a sealant that suits the panel and its movement.
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.
Outside joints around Southborough
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. With historic houses such as Penshurst Place (about 3.5 miles west) nearby, there’s older building stock in the area around Southborough as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
Homes close to Christ Church include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant. Letting a property close to High Brooms station? Then split movement joints are easy to miss on a rental until damp shows inside.
Southborough is about 1 mile north of Royal Tunbridge Wells, in Kent. We carry out external mastic for householders, landlords and businesses in Southborough, as part of our work across Kent. Across Kent, we cover 922 places, Southborough among them. We also work in Crawley, about 20 miles from Southborough.
Jobs for external mastic in TN4 and TN2 works the same way as everywhere else we cover. Streets in the area include London Road, Church Road and Norton Road, all of which we cover. You will find Southborough on the A26, so it’s easy for us to get to. If you’re just outside Southborough, we cover High Brooms (1 mile south-east), Stockland Green (1 mile west), Bidborough (1 mile north-west), Royal Tunbridge Wells (1 mile south) and Speldhurst (2 miles west). Larger places within reach include Maidstone (14 miles north-east), Sevenoaks (9 miles north), Tonbridge (3 miles north), Kings Hill (10 miles north-east), Foley Park (15 miles north-east) and Paddock Wood (6 miles east).
What’s near Southborough
Locally, jobs take us to homes and businesses close to Barnett's Wood, St Gregory's Catholic School and Flying Dutchman pub. For rail, the closest station is High Brooms station, about 1 mile south-east of the centre. A little further out are Kent and Sussex Hospital (1.4 miles south) and Tonbridge Castle (2.8 miles north). Not far away are Tudeley Woods RSPB reserve and Barden Lake.
Places near Southborough
What else we do in Southborough
What affects the quote in Southborough
We don’t publish a price list, because no two jobs are the same. What we look at:
- How many areas need sealing
- The size of the job
- Whether old sealant or filler has to be cut out
- Any working-time requirements on site
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all make a difference.
What to tell us for a quote
To help us quote quickly, please include:
- Pictures of the joints, sent by email
- What the problem is, such as mould, gaps, leaks or cracking
- How we’d reach the joints
- If it’s domestic, commercial or a hotel
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and email pictures if that’s easy.
Leave it or put it right?
A properly done movement joint is an even line in a colour that suits the wall. A rushed bead with no backing looks untidy and does not last, so it pays to do it properly once. In an older home around Southborough, damp from a failed joint can get into timber and plaster, and that’s a much bigger job than renewing the sealant.
Leaving a failed joint generally makes the job bigger, not smaller, as water and mould keep getting in. If you are unsure, call 0345 464 0079 or email us for an honest opinion and a quote.
What you get with us
- Old sealant always removed completely
- More than 20 years in sealant work
- White, clear, grey or coloured to suit, where the product allows
- Quality sealants from Arbo and Everbuild
Take a look at how sealant jobs are priced and our reviews.
Southborough questions
Do you cover Southborough for external mastic?
Yes. Our work covers London and the South East, and Southborough is part of that. You can call 0345 464 0079 or send us an email and tell us what needs doing.
Do you work for landlords with property near High Brooms station?
Yes, we work for landlords and agents. 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 we start.
How do I get a quote for external mastic in Southborough?
It depends on the job, so we quote each one individually. To get one, call 0345 464 0079 or email us and tell us what needs doing and where.
Is it worth trying it myself?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
Will you leave a mess?
Tidy work is part of the job. Nearby surfaces are protected, and we clear up when we are done.
Is it OK to fill a movement joint with cement?
No. Mortar locks the joint solid, so the movement cracks the wall elsewhere. Use a flexible sealant with backing rod.
What do you need from me for a quote?
Where the job is, what the problem is and roughly how big it is. If you can, email a few pictures.
Can you seal over the old sealant?
No, it will not last. It may look fine at first, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
How it works
You do not need to clear the whole room or building before we come, only the area right around the joints. We protect the rest, and the work takes anything from a few hours to several days, depending on the building in most cases. In a smaller place like Southborough, parking is seldom the issue; lanes, gates and long drives are worth mentioning. For outside work, side access and the height of the joints help us plan.
- 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.
- We clean both faces of the joint and prime them where the product calls for it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
How to prepare
- Mention any parking rules near the property
- Tell us about access, such as stairs, a lift or high-level joints
- Mention any leaks or damp you’ve noticed
Getting a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll explain how we’d tackle it. When it suits you, ring 0345 464 0079 or drop us an email.