Kent · England
External Mastic in Broadwater Down
External mastic across Broadwater Down and nearby, with old sealant always removed completely and a one-year guarantee.
- Failed sealant between panels on a façade
- Rain getting behind render or cladding at a joint
- Joints pointed up with cement by mistake
Keeping the joints in good condition
Aftercare is simple, and it makes a real difference:
- Clear growth from the base of walls and joints
- Get split or bare joints resealed while the damage is small
- Point out the joints to other trades
- Deal with leaking gutters that soak the joints below
Don’t let soil, plants or ivy build up against the new joints. Damp material against the sealant shortens its life.
Leaks behind façade panels and render often go unseen. When it finally shows inside, the joint may have been open for years.
External mastic in Broadwater Down, done properly
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. Typical jobs include weeds or debris growing in open joints and sealant that has lost its bond to the brick or render, across brickwork movement joints, façade panels and joints between brick and frames.
Outbuildings, garages and conservatories around homes in places like Broadwater Down add more joints to look after. Gutter ends, garage door frames and the joints where an extension meets the house are typical spots for leaks.
There’s a 12-month guarantee on every job, large or small.
- Place
- Broadwater Down (TN2, TN4, TN1)
- Wider area
- Kent
- Cover
- One year on every job
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Why act early in Broadwater Down
A failed movement joint lets water into the wall. Dealing with it early keeps the repair to the joint, instead of the wall and finishes around it. In a smaller place like Broadwater Down, wherever a wall is exposed, a failed outside joint is a real source of damp. Indoors, a failed seal lets water into floors and panels as it would anywhere.
We do not show prices on the website, because each job is priced on what it involves. For a quick quote, please ring 0345 464 0079 or email us.
Why us?
- Tidy, careful work
- We never seal over old sealant
- 12-month guarantee on every job
- 4.9 on Google from 180+ five-star reviews
Read how sealant jobs are priced or our reviews.
Places near Broadwater Down
More services for Broadwater Down
DIY sealant or a professional job?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
What external mastic looks like in Broadwater Down
With historic houses such as Groombridge Place (about 2.7 miles west) nearby, there’s older building stock in the area around Broadwater Down as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For an older house near a landmark such as St Mark's Church, older walls, gutters and the joints where extensions meet them need a flexible sealant. If you look after a building such as Broadwater Down Primary School, larger buildings have long runs of movement joint that eventually need resealing.
Broadwater Down is about 1 mile south-west of Royal Tunbridge Wells, in Kent. Whether you’re in the middle of Broadwater Down or further out, external mastic is available for homes and businesses alike. Broadwater Down is one of 922 places in Kent we cover for external mastic. We also work in Crawley, around 19 miles away.
Every address in TN2, TN4 and TN1 is within our area for external mastic, from the main roads to the quietest streets. Streets in the area include Frant Road, Eridge Road and Ramslye Road, all of which we cover. Broadwater Down is on the A267, so it’s easy for us to get to with everything needed for external mastic. We also cover the places around Broadwater Down: Hawkenbury (1 mile east), Royal Tunbridge Wells (1 mile north-east), Rusthall (2 miles north-west), Langton Green (2 miles north-west) and Bells Yew Green (2 miles south-east). Larger places within reach include Sevenoaks (12 miles north), Tonbridge (6 miles north), Kings Hill (12 miles north-east), Paddock Wood (7 miles north-east), Southborough (3 miles north) and Edenbridge (10 miles north-west).
What’s near Broadwater Down
Locally, jobs take us to homes and businesses close to Sir Alf Ramsey pub, Dunorlan Park and Bennett Memorial Diocesan School and the streets around them. Broadwater Down’s nearest station is Tunbridge Wells station, about 0.9 miles north-east. A little further out are The Corn Exchange (0.5 miles north-east) and The Amelia (1.1 miles north-east). Not far away are Broadwater Warren RSPB Reserve.
What sealant work cannot fix
Sealant is not the answer to every problem, and we’d rather say so up front. It won’t solve:
- Cracked brickwork or render that needs a builder or plasterer
- Walls that need new movement joints cut into them
- Structural movement, which needs a surveyor or engineer
If you are not sure, just phone 0345 464 0079 or send us an email and we will give you a straight answer before you book.
Surfaces we seal
- Façade panels
- Brickwork movement joints
- Render & cladding joints
- Concrete & block
- Copings & trims
- Joints between brick and frames
What we are called out for in Broadwater Down
Many joints fail because they were sealed too deep or with nothing behind them. If the sealant sticks to the back as well as the sides, it cannot stretch and tears as soon as the joint widens.
These are the problems we’re asked about most:
- Panel joints letting water in
- Damp patches traced to an open external joint
- Movement joints filled with mortar instead of sealant
- Failed seals between different materials
Rented homes near Tunbridge Wells station change hands often, and split movement joints are easy to miss on a rental until damp shows inside.
Questions to ask before you book
- How the colour is chosen
- Is VAT in the price?
- Who does the work, and how experienced they are
- When the joint can take water or movement
How we quote for external mastic
Some jobs are bigger than they look, and some smaller. What affects the quote:
- The old material and how stubborn it is
- The product the joint needs
- The number of rooms or windows
- Whether there’s mould to deal with
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all play a part, and we will explain the quote if you ask.
What we need to know
There’s no need for technical detail. Just tell us:
- Roughly how big the job is
- The type of property
- How we’d reach the joints
- Pictures of the joints, sent by email
For external mastic in Broadwater Down, phone 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and you’ll get a clear quote before any work starts.
What happens on the day
When we arrive, we start by going over the job with you. We protect the surfaces around the joints before we start. Most jobs take anything from a few hours to several days, depending on the building. For a job in Broadwater Down, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- 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
- Let us know about stairs, lifts or work at height
- Move anything stored near the joints
- Mention any parking rules near the property
How to get a quote
We quote each job on its own, so the first step is telling us about yours. Simply phone 0345 464 0079 or drop us an email and describe the job.
Related advice
Broadwater Down questions
I let a flat near Tunbridge Wells station. Can you help?
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 any work starts.
Can you do external mastic in Broadwater Down?
Yes, Broadwater Down is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job, and we will give you a clear quote.
How long does the job take?
As a guide, most jobs take a few hours for a handful of joints, longer for a whole elevation. Larger jobs naturally take longer, and we will tell you how long to expect.
Which products do you use?
Each joint gets the product that suits it. Movement, water and weather all affect the choice, and we will explain our choice.
Can you seal joints between two different materials?
Yes. We cut out the old sealant, prepare both faces and reseal with a flexible exterior product. The colour is chosen to suit.
What does external mastic cost?
We do not publish prices, because the cost depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
Why do you put foam in the joint first?
Closed-cell backing rod sets the depth of the sealant and stops it sticking to the back of the joint. Then the sealant bonds to two faces and can move.
Is it OK to seal over old sealant?
No, and we never do. It can look neat for a few weeks, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.