West Sussex · England
External & façade joints in Patching, West Sussex
Problem with your movement joints in Patching? We remove the old material, prepare the joints and seal them properly.
- Gaps where render, brick and frames meet
- Brick movement joints where the sealant has split
- Sealant pulling away from one side of the joint
External mastic for homes and businesses in Patching
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible exterior sealant takes up that movement. We are often asked to deal with weeds or debris growing in open joints and sealant that has lost its bond to the brick or render, on joints between brick and frames, façade panels and copings & trims.
Outside joints can only be sealed when they’re dry, so work in Patching is booked around the forecast. Tell us about access to all sides of the building, including outbuildings and garages.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Location
- Patching (BN13)
- Wider area
- West Sussex
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
For landlords and businesses
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
We also work for property managers and facilities teams. Several sites can go on one quote.
How it works
Good joint work is mostly preparation, so that is where we spend the time. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours for a handful of joints, longer for a whole elevation. In a small place like Patching, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- 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.
- The joint faces are cleaned and primed where the sealant needs it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Getting ready for the visit
- Try not to wet indoor joints just before the visit
- Plan for the work area to be out of bounds to pets and children
- Tell us about any previous sealing or DIY attempts
Ask for a quote
Need a quote? Please phone 0345 464 0079 or send us an email and tell us about the job. We will explain what we’d do and send you a clear quote before work begins.
Advice
When something else is needed
New sealant cannot fix everything, and we’ll tell you before any work starts. Sealant won’t put right:
- Subsidence or other structural problems
- Walls that need new movement joints cut into them
- Loose or hollow render, which needs re-rendering
If in doubt, call 0345 464 0079 or drop us an email and we’ll say what we think before you book.
Surfaces we seal
- Joints between brick and frames
- Render & cladding joints
- Copings & trims
- Concrete & block
- Façade panels
- Brickwork movement joints
Leave it or put it right?
Pointing a movement joint with mortar might seem a neat fix, but it stops the joint moving. The wall then cracks somewhere else. The correct repair is a flexible sealant with the right backing. Around Patching, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or drop us an email.
What you get with us
- Full insurance on every job
- More than 20 years in sealant work
- White, clear, grey or coloured to suit, where the product allows
- Arbo and Everbuild products
Take a look at our cost guide and customer reviews.
What the job involves on each surface
Render joints
Water behind render can lead to blown patches. Resealing the joints early keeps water out and helps it last.
Concrete and blockwork
Wide joints in concrete need the depth controlling carefully. Backing rod sized to the joint sets it.
What affects the cost of external mastic
For a quick quote, just ask. What matters most is:
- How easy the joints are to reach
- Any mould that needs treating
- The old material and how stubborn it is
- The type of sealant required
Combining jobs into one visit usually makes better use of the time than several visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
What we need to know
When you contact us, it’s useful to know:
- Any access issues, like height or stairs
- Whether it has been sealed before
- Photos by email, if that’s easy
- How many joints, rooms or windows are involved
To get a quote, call 0345 464 0079 or email us with the location and a short description of the problem. You will have a clear quote before work begins.
Common questions in Patching
Will you come out to Patching?
Yes, Patching is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Can you help a landlord with a rental near Goring-By-Sea station?
Yes, we work for letting agents and landlords. Just phone 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear quote.
What information do you need?
A short description and the location, with pictures by email if possible. We will ask anything else we need to know.
Is there any odour?
It depends on the product. Some smell for a while, some hardly at all.
Can you reach joints on upper floors?
Each building is different. Send us photos and a rough idea of the height and we will confirm how they can be reached safely.
How long does external mastic last?
It varies with how exposed the wall is and how much the joint moves. Look for splits, hardening or edges coming away and have them redone then.
How much does external mastic cost in Patching?
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 before the joint can be used?
That depends on the sealant used, so follow the cure time we give you when we finish.
DIY sealant or a professional job?
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
Patching buildings and the weather
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. With historic houses such as Ecclesden Manor (about 1.5 miles south-west) nearby, there’s older building stock in the area around Patching as well as newer homes. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material.
If you look after a building such as Clapham and Patching CofE Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. If you live in an older home near The Parish Church of St John the Divine, older walls, gutters and the joints where extensions meet them need a flexible sealant. Rented homes near Goring-By-Sea station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Patching is about 3 miles north-west of Worthing, in West Sussex. Whether you are in the middle of Patching or further out, external mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Our area takes in 371 places across West Sussex. You can also see our page for Brighton, about 14 miles away.
Work in BN13 is quoted and booked the same way as anywhere else. If you need external mastic at a property on The Street and Coldharbour Lane or a nearby road, we can help. If you are just outside Patching, we cover Clapham (1 mile south-east), Hammerpot (2 miles west), Cote (2 miles east), Angmering (2 miles south-west) and Hangleton (2 miles south). Within a short drive, we also cover Worthing (3 miles south-east), Bognor Regis (11 miles west), Chichester (14 miles west), Littlehampton (4 miles south-west), Shoreham-by-Sea (8 miles east) and Lancing (6 miles east).
Near you in Patching
Typical jobs here are in homes near The Fox pub, The Angmering School and Clapham Wood, among other places. The closest station to Patching is Goring-By-Sea station, about 2.3 miles south-east of the centre. Well-known places in the area include Museum of Sussex Folklore (3.1 miles south-east) and Old Castle (3.1 miles south-east). Green spaces nearby include WWT Arundel and Highdown Hill.