West Sussex · England
External & façade joints in Highleigh, West Sussex
External mastic for Highleigh and the surrounding area: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Plants rooting in failed movement joints
- Sealant pulling away from one side of the joint
- Brick movement joints where the sealant has split
External mastic in Highleigh
A movement joint is a deliberate break that lets a wall expand and contract. The sealant in it has to stretch and squeeze for years, and when it fails, the wall takes the strain and water finds a way in. If you have weeds or debris growing in open joints and joints with sealant missing in places, we can put it right.
Older homes in small places like Highleigh may be stone, brick or timber-framed, often with later extensions. Where one material meets another is where water usually gets in.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we will sort it.
- Location
- Highleigh (PO20)
- Region
- West Sussex
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
For landlords and businesses
For anyone letting property in or around Highleigh, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs.
Housing providers, facilities teams and property managers book us too. Several sites can go on one quote, and we’re fully insured.
Places near Highleigh
Also in Highleigh
How the visit works
Before we leave, we go over the finished joints with you and tell you how long to leave it. The work normally takes anything from a few hours to several days, depending on the building, depending on the size of the job. Somewhere like Highleigh 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.
- First we look over the joints with you, agree which to renew and talk through access.
- We cut out the failed sealant and rake out any dirt or growth.
- We clean both faces of the joint and prime them where the product calls for it.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Preparing for the visit
- Let us know about parking restrictions
- Clear the area around the work
- On commercial sites, let us know about site rules
Ask for a quote
We don’t publish a price list, as no two jobs are quite the same. Instead, we give you a clear price for your job. To arrange one, ring 0345 464 0079 or email us.
Advice
What affects the cost of external mastic
Call for a quick quote. What matters most is:
- How many rooms, windows or areas are involved
- Whether there’s mould to deal with
- The number and length of the joints
- Access and height
Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Helping us quote
To make quoting easier, let us know:
- What the problem is, such as mould, gaps, leaks or cracking
- Any access issues, like height or stairs
- The rough size of the job
- Photos by email, if that is easy
Every job is quoted individually, so the first step is telling us about yours. Just ring 0345 464 0079 or drop us an email with the details and send pictures if you have them.
Surface by surface
Copings and trims
Coping and trim joints face rain and sun head on. Each is resealed with a weatherproof, flexible sealant.
Brickwork movement joints
Brick movement joints are often mistaken for a missing mortar line. If that is happened, we rake it out and reseal it properly if the joint can be cleared.
Can I do it myself?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
If you do try it yourself, take your time over the 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.
What happens if it’s left?
An open joint keeps letting water into the wall with every downpour. Wet masonry is more easily damaged by frost around the joint, so the damage spreads beyond the joint. Older cottages and farmhouses around Highleigh can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote.
Why book with us
- A choice of colours where the product allows
- Every job guaranteed for a year
- 180+ five-star Google reviews
- Domestic, commercial and hotel work
Take a look at our cost guide or customer reviews.
Walls and rooflines in Highleigh
Highleigh is within about 2 miles of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. 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 Chichester station, outside joints that have cracked can let damp into a rental, so check them between lets. If you look after a building such as Sidlesham Primary School, its movement joints, gutters and trims need looking after like any other building’s. For an older house near a landmark such as St Mary Our Lady Sidlesham, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Highleigh is about 3 miles north of Selsey, in West Sussex. Homes, rented property, offices and hotels in Highleigh is covered for external mastic, old or new, large or small. The work is guaranteed for a year. Highleigh is one of 371 places in West Sussex we cover for external mastic. Portsmouth is on our list too, about 12 miles from Highleigh.
Every address in PO20 is within our area for external mastic. External mastic is available to properties on Critchel's Lane, Highleigh Road and Green Lane and the roads around them. Other places close to Highleigh include Almodington (1 mile west), Birdham (2 miles north-west), Somerley (2 miles west), Earnley (2 miles west) and Shipton Green (3 miles north-west). We also work in nearby towns such as Bognor Regis (5 miles east), Chichester (4 miles north), Selsey (3 miles south), Littlehampton (12 miles east), Emsworth (8 miles north-west) and Rustington (13 miles east).
What’s near Highleigh
The nearest railway station is Chichester station, about 3.9 miles north. Well-known places in the area include Chichester Castle (4.5 miles north) and Selsey Lifeboat Museum (3.5 miles south). Not far away are Pilsey Island.
FAQs for Highleigh
Does the coastal weather in Highleigh affect outside sealant?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. The right product, a clean joint and the right depth all help it cope.
Is Highleigh within the area you cover?
Yes, we do. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Do you hold any approvals?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
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?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. You will get a clear quote before any work starts.
Can you do several jobs on one visit?
Yes. Several rooms, windows or areas can go on one quote.
Do you work at height?
That depends on how high the joints are and the ground below. Ground-floor joints are simple; for higher ones, send details and we’ll confirm the access.
Do you take out the old sealant first?
Yes. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
Aftercare tips
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Keep soil, plants and ivy away from the joints
- Fix overflowing gutters above sealed joints
- Check external joints each spring
- Show decorators and builders where the movement joints are
Keep pressure washers away from the sealant. A strong jet can damage the edges of the bead.
An open movement joint lets rain into the wall every time it pours. Over time it can mean damp inside, stained render or frost-damaged brick which cost more to put right than the joint.