West Sussex · England
External & façade joints in Crockerhill, West Sussex
Professional external mastic in and around Crockerhill, with old sealant always removed completely.
- Failed sealant between panels on a façade
- Old sealant gone brittle and cracked
- Joints where the bead has come unstuck
How we handle external mastic in Crockerhill
Joints in render and cladding are easy to overlook until a damp patch appears. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant. Common call-outs are for failed sealant between panels on a façade and old sealant gone brittle and cracked, on brickwork movement joints, façade panels and concrete & block.
External sealant needs dry, clean surfaces, so work around Crockerhill is planned for dry weather. Tell us about access to all sides of the building, including outbuildings and garages.
Your job is guaranteed for a year, as with all our work.
- Place
- Crockerhill (PO18)
- Wider area
- West Sussex
- Cover
- One year on every job
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Honest limits
We will not take on work that will not last, so these are the limits:
- Cracks in the bricks or render themselves, away from the joints
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Subsidence or other structural problems
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think before booking.
Joints and surfaces we work on
- Copings & trims
- Concrete & block
- Joints between brick and frames
- Render & cladding joints
- Façade panels
- Brickwork movement joints
Why deal with it now?
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. A stiffer product can damage the joint edge as it fails. Older cottages and farmhouses around Crockerhill can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Doing several joints on one visit usually makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
Why book with us
- We never seal over old sealant
- Sealant colour chosen to suit
- Approved under the ARBOMaster scheme
- We’re fully insured
Read what affects the cost and customer reviews.
What affects the cost of external mastic
We quote each job individually. These are the things that affect it:
- Whether old sealant or filler has to be cut out
- The amount of work
- How many rooms, windows or areas are involved
- Whether the work is at height
What it costs depends on the size of the job, how much old material has to come out and how easy the joints are to reach. We give a clear quote before we start, so you know where you stand.
Asking for a quote
Photos by email are helpful but not essential. Please mention:
- The problem you’ve noticed
- Access, such as stairs, a lift or height
- Where the job is, and your postcode
- Whether it’s a home or a business
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is. Whenever you are ready, call 0345 464 0079 or email us.
What we do, step by step
When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. Most jobs then take a few hours for a handful of joints, longer for a whole elevation. Somewhere as small as Crockerhill, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- 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.
Getting ready for the visit
- Tell us about any previous sealing or DIY attempts
- Keep pets and children clear of the area while we work
- Where the joints are inside, avoid wetting them before we arrive
Getting a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints.
Read more
What the job involves on each surface
Joints between dissimilar materials
Different materials may need different primers. We prepare both faces so the sealant bonds properly.
Render joints
Rendered walls have joints at beads, openings and changes of material. They’re resealed in a sealant that suits the render.
Crockerhill: your questions answered
Can you help a landlord with a rental near Barnham station?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before we start.
Can you do external mastic in Crockerhill?
Yes, Crockerhill is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or send us an email and tell us what needs doing.
How much does external mastic cost in Crockerhill?
It depends on the job, so we quote each one individually. For a quick quote, phone 0345 464 0079 or send us an email and tell us what needs doing and where.
What sealant do you use?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
Why is there a gap in my brick wall?
Brickwork, render and cladding all move a little, and planned joints take up that movement. The gap is sealed with a flexible sealant over backing rod.
Can you work on commercial sites?
Yes, regularly. We can plan bigger jobs in stages to suit the site.
How long does the job take?
It depends on the size of the job, but most jobs take a few hours for a handful of joints, longer for a whole elevation. We’ll give you a better idea when we quote.
When is the sealant fully cured?
Cure times vary by product and the conditions. Before we leave, we will tell you the cure time.
Landlord and commercial work in Crockerhill
Failed sealant is one of the commonest items on a check-out report. We can quote for more than one property at once.
Hotels need rooms back in use, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
DIY versus a professional finish
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Nearby places to Crockerhill
Other services in Crockerhill
External mastic in Crockerhill: local notes
With historic houses such as Goodwood House (about 2.6 miles north-west) nearby, there’s older building stock in the area around Crockerhill as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you live in an older home near The Parish Church of St Mary, old and new materials meet at the roofline and walls, which is where sealant earns its keep. If you look after a building such as Tangmere Primary Academy, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. For landlords with property near Barnham station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Crockerhill is about 4 miles east of Chichester, in West Sussex. Whether you’re in the middle of Crockerhill or further out, we cover external mastic for every kind of property. Our West Sussex coverage runs to 371 places, and Crockerhill is one of them. There’s also a page for Portsmouth, about 17 miles away.
We work across the PO18 postcode area for external mastic. We also cover East Hampnett (1 mile south-west), Norton (1 mile south-east), Aldingbourne (1 mile south), Nyton (1 mile south-east) and Westergate (2 miles south-east). We also work in nearby towns such as Worthing (13 miles east), Bognor Regis (4 miles south), Chichester (4 miles west), Selsey (9 miles south-west), Littlehampton (7 miles south-east) and Emsworth (11 miles west).
Landmarks near Crockerhill
Around Crockerhill, our work takes us to homes and buildings near Ormiston Six Villages Academy and The Winterton Arms Public House, among other places. The nearest railway station is Barnham station, roughly 2.7 miles south-east of the centre. Other landmarks nearby include Tote Copse Castle (1.4 miles south) and Chichester Centre (3.7 miles west). Open spaces near Crockerhill include Levin Down.