West Sussex · England
West Barnham External Mastic
Professional external mastic in and around West Barnham, with old sealant always removed completely and a 12-month guarantee.
- Movement joints filled with mortar instead of sealant
- Failed sealant between panels on a façade
- Brick movement joints where the sealant has split
Landlords, agents and businesses in West Barnham
In hotels, rooms out of use cost money, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.
Failed sealant is one of the commonest items on a check-out report. We can quote for more than one property at once.
How we handle external mastic in West Barnham
On houses, flats and commercial buildings across West Barnham, we reseal joints in brickwork, render, cladding and façade panels. Every joint gets the same careful preparation: clean joint faces and the right depth. We work on façade panels, concrete & block and render & cladding joints, and common reasons people get in touch are sealant pulling away from one side of the joint and damp patches traced to an open external joint.
Around West Barnham, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water usually gets in.
All our work comes with our one-year guarantee, wherever you are in West Sussex.
- Location
- West Barnham (PO22)
- Wider area
- West Sussex
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Places near West Barnham
Also in West Barnham
What we do, step by step
Good joint work is mostly preparation, and we don’t rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes anything from a few hours to several days, depending on the building. Somewhere as small as West Barnham, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
How to prepare
- Tell us about any previous sealing or DIY attempts
- Mention any parking rules near the property
- For business premises, tell us about site rules or sign-in
Get a quote
We quote each job on its own, so the first step is telling us about yours. Simply ring 0345 464 0079 or send us an email and describe the job.
Read more
Should I try it myself first?
If you’re 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 does not work out, we can still put it right.
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.
Different surfaces, different methods
Copings and trims
Coping joints that leak let water straight down into the wall. Resealing them is a small job that protects a lot.
Concrete and blockwork
The face of concrete or block is often dusty, so preparation is key. A primer goes on where the product requires one.
What sealant work can’t fix
Before you book, it’s worth knowing the limits too:
- Damp that isn’t coming from the joint
- Walls that need new movement joints cut into them
- Subsidence or other structural problems
Not sure which it is? You can phone 0345 464 0079 or email us and we’ll tell you honestly before you book.
What we seal
- Brickwork movement joints
- Copings & trims
- Façade panels
- Concrete & block
- Joints between brick and frames
- Render & cladding joints
Aftercare tips
Looking after new joints is easy, and it makes a real difference:
- Point out the joints to other trades
- Wash walls gently around the sealant
- Check the sealant is paintable before painting near it
- Deal with leaking gutters that soak the joints below
Only paint over the joint if we have confirmed the sealant can take paint. Paint can crack on a flexible joint, and paint can crack as the joint moves.
Leaks behind façade panels and render often go unseen. When it finally shows inside, the joint may have been open for years, so it’s worth resealing at the first signs.
West Barnham: your questions answered
Do you cover West Barnham for external mastic?
Yes, West Barnham is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or send us an email and tell us what needs doing, and we’ll give you a clear price.
Will you come out to West Barnham?
Yes, West Barnham 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.
Can you work on commercial sites?
Yes, regularly. Larger jobs can be planned room by room or area by area to suit the site.
Will the new joint stand out?
There’s a good range of exterior colours, including greys, browns, whites and stone tones. We pick the one that suits your wall best.
How do I get a quote for external mastic in West Barnham?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote.
How long will you be here?
Most jobs take a few hours for a handful of joints, longer for a whole elevation, including preparation and clearing up. Your quote will say how long we expect yours to take.
Can a movement joint be filled with mortar?
No. A mortar-filled joint cannot move, so the wall cracks somewhere else instead. Use a flexible sealant with backing rod.
How do you reach high-level joints?
It depends on the building. Tell us the height, the number of joints and what’s below them.
When to call us in West Barnham
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.
Common reasons people contact us include:
- Hard, crazed mastic that has stopped moving
- Damp patches traced to an open external joint
- Brick movement joints where the sealant has split
- Moss and dirt in joints with no sealant left
In the older streets around The Parish Church of St Mary, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
What your quote should include
- How much experience the applicator has
- What happens if the job turns out different
- How the colour is chosen
- What preparation is included
External mastic in West Barnham: local notes
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you let a flat or house near Barnham station, split movement joints are easy to miss on a rental until damp shows inside. Managing a site like Barnham Primary School? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
West Barnham is about 4 miles north-east of Bognor Regis, in West Sussex. For external mastic in and around West Barnham, it’s easy to get a quote: please ring 0345 464 0079 or email us. We are based in Crawley and cover West Sussex, West Barnham included. Across West Sussex, we cover 371 places, and West Barnham is one of them. For nearby work, see our Portsmouth page.
We work across the PO22 postcode area for external mastic. Whether your property is on Woodside, Orchard Way and Paddocks or a nearby road, we can help. Being close to the B2233, West Barnham is simple for us to get to for external mastic. Other places close to West Barnham include Barnham (1 mile south-east), Eastergate (1 mile north-west), Walberton (1 mile north-east), Westergate (1 mile west) and Fontwell (1 mile north). Within a short drive, we also cover Worthing (11 miles east), Bognor Regis (4 miles south-west), Chichester (6 miles west), Selsey (9 miles south-west), Littlehampton (5 miles east) and Lancing (14 miles east).
What’s near West Barnham
Locally, jobs take us to homes and businesses close to St Philip Howard Catholic High School and The Murrell Arms and the streets around them. West Barnham has its own railway station: Barnham station. Nearby you will also find Tote Copse Castle (2.2 miles west) and Bognor Regis War Memorial Hospital (3.3 miles south-west). Green spaces nearby include WWT Arundel.