Kent · England
External & façade joints in High Brooms, Kent
Specialist external mastic for High Brooms: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Movement joints filled with mortar instead of sealant
- Failed seals between different materials
- Weeds or debris growing in open joints
How the job changes by surface
Cladding and façade panels
Cladding and façade panels are generally separated by sealed joints. We reseal them with a sealant suited to the panel material.
Joints between dissimilar materials
Wherever two materials meet, they move differently. A flexible sealant bridges the two.
How we handle external mastic in High Brooms
We cut out failed sealant, set the joint depth with closed-cell backing rod and reseal with a low-modulus exterior sealant. The colour is chosen to suit the brick or render so the joint does not stand out. If you are dealing with leaking joints around cladding and façade panels and gaps where render, brick and frames meet, we can help.
In a smaller place like High Brooms, some homes face open ground, and walls and rooflines facing the weather take the worst of it. Joints on those sides are usually the first to go.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we will sort it.
- Place
- High Brooms (TN2, TN4, TN1)
- Wider area
- Kent
- Guarantee
- A year, on every job
- Quote
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
High Brooms buildings and the weather
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. Historic houses like Groombridge Place (about 4.4 miles south-west) are a reminder that the area around High Brooms 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.
For landlords with property near High Brooms station, failed wall and movement joints let damp in, so they’re worth checking between tenancies. Managing a site like St John's Church of England Primary School? Then larger buildings have long runs of movement joint that eventually need resealing.
High Brooms is about 1 mile north-east of Royal Tunbridge Wells, in Kent. We carry out external mastic for homes and businesses in High Brooms and nearby. High Brooms is one of 922 places in Kent we cover. You can also see our page for Crawley, roughly 20 miles from High Brooms.
Every address in TN2, TN4 and TN1 is within our area for external mastic. If you need external mastic at a property on Oak Road, Brook Road and Caley Road or anywhere close by, our applicators can take on the job. Neighbouring places we cover for external mastic include Southborough (1 mile north-west), Royal Tunbridge Wells (1 mile south-west), Hawkenbury (2 miles south), Stockland Green (2 miles west) and Bidborough (2 miles north-west). Further out, we also cover Maidstone (14 miles north-east), Sevenoaks (10 miles north-west), Tonbridge (3 miles north), Kings Hill (10 miles north-east), Foley Park (14 miles north-east) and Paddock Wood (5 miles east).
Local landmarks in High Brooms
In High Brooms, that means homes and buildings near St Gregory's Catholic School, Hilbert Woods and Longbow Court pub and the streets around them. High Brooms has its own railway station: High Brooms station. Nearby you will also find Kent and Sussex Hospital (1.2 miles south-west) and Tunbridge Wells Museum and Art Gallery (1.2 miles south-west). The countryside around High Brooms includes Tudeley Woods RSPB reserve and Barden Lake.
The process
On the day, there’s very little for you to do. Show us the job and we will take it from there. The work itself takes anything from a few hours to several days, depending on the building from start to finish. A visit to High Brooms is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- 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.
- We gun in low-modulus sealant and tool it neatly.
Before we arrive
- Let us know about stairs, lifts or work at height
- Mention any sign-in or site rules at work premises
- Plan for the work area to be out of bounds to pets and children
Ask for a quote
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. A few pictures by email make the job easier to understand, and we’ll take it from there.
Related advice
How to look after the new joints
Aftercare is simple, and it makes a real difference:
- Point out the joints to other trades
- Check external joints each spring
- Get split or bare joints resealed while the damage is small
- Keep high-pressure jets off the joints
Have a quick look at the joints each spring. Splits, gaps at the edges or plants in the joint are early warning signs.
Gaps, plants or missing sealant in a joint are worth getting looked at. Earlier resealing means a smaller job and a better result.
Work for landlords, hotels and businesses
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
DIY sealant or a professional job?
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly.
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.
Common problems we fix in High Brooms
Some movement joints have been pointed up with mortar by mistake. With the joint locked solid, the movement turns into cracks elsewhere in the wall.
These are the problems we’re asked about most:
- Movement joints filled with mortar instead of sealant
- Sealant pulling away from one side of the joint
- Hard, crazed mastic that has stopped moving
- Joints with sealant missing in places
In the older streets around St Matthew's Church, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Questions to ask before booking
- What product goes in the joint
- How long the guarantee is
- Who turns up on the day
- Whether you can choose the colour
Why act early in High Brooms
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That matters on brick, render and concrete, which can be weaker at the face. Too stiff a sealant can pull at the edges and break them. In an older home around High Brooms, damp from a failed joint can get into timber and plaster, which is far harder to put right than the sealant itself.
What you pay reflects the work, not a rough estimate. That is why we ask about the job first and agree the price before starting.
What you get with us
- Colour agreed with you before any work starts
- Sanitary silicone with an anti-fungal additive in wet areas
- Approved under the ARBOMaster scheme
- Sealant colour chosen to suit
Read our cost guide or what customers say.
Questions from High Brooms
I let a flat near High Brooms station. Can you help?
Yes, we work for landlords and letting 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 any work starts.
Is High Brooms within the area you cover?
Yes. High Brooms is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Why is there a gap in my brick wall?
A vertical gap in a long brick wall is usually a movement joint. It lets the bricks expand without cracking.
What colours does the sealant come in?
The aim is a neat, even joint in a colour that suits the wall. Colour is agreed with you before we begin.
Can you quote for more than one area?
Yes. More than one area can be quoted together.
Will the old sealant be removed?
Yes. All of the old material is cut out and the joint cleaned before applying anything new.
Do you hold any approvals?
Yes. We’re an ARBOMaster approved applicator, the approved applicator scheme for Arbo sealants.
Where do you work from?
Our base is Crawley, with over 20 years’ experience. We work across South East England, London and Scotland.