East Sussex · England

External & façade joints in Balls Green, East Sussex

Problem with your movement joints in Balls Green? We cut out the old, prepare the joints and apply the right sealant.

  • Weathered mastic that no longer stretches
  • Water getting into walls through failed joints
  • Failed sealant between panels on a façade

External mastic in Balls Green

External mastic in Balls Green

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. We work on façade panels, joints between brick and frames and concrete & block, and people most often call us about old sealant gone brittle and cracked and rigid filler in a joint that should flex.

External sealant needs dry, clean surfaces, so work around Balls Green is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.

We guarantee the work for a year. If something isn’t right with it in that time, tell us and we will put it right.

The Mr Mastic team in navy uniforms in front of three Mr Mastic vans
Where
Balls Green (TN7)
Region
East Sussex
Guarantee
12 months on all our work
Price
A clear quote up front
Telephone
0345 464 0079
Updated
26 October 2026

The process

You do not need to clear the whole room or building before we come, just the space around the work. We protect the rest, and the work takes a few hours for a handful of joints, longer for a whole elevation for a typical job. Somewhere as small as Balls Green, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.

  1. First, the joints are inspected and the access agreed.
  2. We cut out the old mastic and rake out anything in the joint.
  3. The faces are brushed clean and primed where the product requires it.
  4. We fit closed-cell backing rod to control the depth.
  5. The exterior sealant is applied, tooled and checked along its length.

Preparing for the visit

  • Tell us if parking is tricky
  • Clear items away from the joints we are working on
  • Let us know if you’ve seen damp or leaks

Get a quote

Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. Whenever you’re ready, call 0345 464 0079 or send us an email.

Ask for a quote

Read more

How the job changes by surface

Concrete and blockwork

Wide joints in concrete need the depth controlling carefully. Backing rod sized to the joint sets it so the sealant is not too deep.

Copings and trims

Metal and stone copings both move with temperature, so the joints need a sealant that stays flexible.

Honest limits

We won’t take on work that will not last, so here’s what sealant cannot put right:

  • Failed render or damaged cladding panels
  • Rising or penetrating damp from elsewhere in the wall
  • Subsidence or other structural problems

If in doubt, phone 0345 464 0079 or send us an email and we’ll say what we think.

Joints and surfaces we work on

  • Render & cladding joints
  • Brickwork movement joints
  • Copings & trims
  • Concrete & block
  • Façade panels
  • Joints between brick and frames

When to call us in Balls Green

Sunlight, wet weather and frost wear exterior sealant down. In time it goes hard, crazes on the surface and stops stretching, so the next time the wall moves, it splits or pulls away.

If you can see any of these, it’s time to have the joints looked at:

  • Plants rooting in failed movement joints
  • Weathered mastic that no longer stretches
  • Damp patches traced to an open external joint
  • Sealant that has lost its bond to the brick or render

Schools such as St Michael's Primary School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.

Before booking anyone

  • What insurance they hold
  • How the joint is cleaned and prepared
  • How long to leave it before use
  • What happens if the job turns out different

Choosing a sealant specialist

DIY versus a professional finish

Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.

If you’ve already had a go yourself, that is fine. We cut it out and start again.

Balls Green: your questions answered

Do you cover smaller places like Balls Green?

Yes, Balls Green is covered. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.

Do you work for landlords with property near Ashurst Kent station?

Yes, landlords and agents are among the people we work for. You can ring 0345 464 0079 or drop us an email with the details for a clear quote.

Where do you work from?

Our base is in Crawley, and we work across South East England, London and Scotland.

Will it make a mess?

Tidy work is part of the job. We protect what’s around the joints, and the area is left clean when we finish.

Is there a guarantee?

Yes. Every job comes with our 12-month guarantee.

Can you work on commercial sites?

Yes. Commercial and hotel work is a large part of what we do. Working times can be discussed when we quote.

Can I add another job to the visit?

Yes, we can. More than one area can be quoted together.

How long does external mastic take?

That depends on the amount of work, but as a guide it takes a few hours for a handful of joints, longer for a whole elevation. We’ll give you a better idea when we quote.

Landlords, agents and businesses in Balls Green

We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.

A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.

Outside joints around Balls Green

With historic houses such as Bassetts Manor (about 2.2 miles north-west) nearby, there’s older building stock in the area around Balls Green as well as newer homes. In older buildings, 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 landlords with property near Ashurst Kent station, outside joints that have cracked can let damp into a rental, so check them between lets. If you live in an older home near The church of St Michael and All Angels, an extension built onto an older house moves differently, and the joint between them takes the strain.

Balls Green is about 4 miles north of Crowborough, in East Sussex. Whether you’re in the middle of Balls Green or further out, external mastic is available for homes and businesses alike. We cover 289 towns and villages across East Sussex, large and small. There’s also a page for Crawley, roughly 14 miles from Balls Green.

We work across the TN7 postcode area for external mastic. We also cover Hartfield (1 mile west), Ashurst (2 miles north-east), Groombridge (2 miles east), Teasley Mead (2 miles north) and Stone Cross (2 miles north-east). Larger places within reach include Crowborough (4 miles south), Uckfield (10 miles south), Heathfield (11 miles south-east), Wadhurst (9 miles east), Ridgewood (10 miles south) and Ringmer (15 miles south).

Around Balls Green

Balls Green’s nearest station is Ashurst Kent station, roughly 1.7 miles north of the centre. Nearby you will also find Bolebroke Castle (1.8 miles north-west) and Crowborough War Memorial Hospital (3.8 miles south). Open spaces near Balls Green include Broadwater Warren RSPB Reserve.

Map of Balls Green © OpenStreetMap contributors

Why deal with it now?

Running new sealant over the old bead rarely lasts. The new layer can’t bond properly to old, weathered material, so the old joint is cut out fully first. Where a wall is exposed, as many are in small places like Balls Green, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.

What you pay reflects the work, not guesswork. That is why we ask about the job first.

Why us?

  • We never seal over old sealant
  • ARBOMaster approved applicator
  • Full insurance on every job
  • Anti-fungal silicone where joints get wet

See how sealant jobs are priced and customer reviews.

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job