West Sussex · England
External Mastic in East Worthing
External mastic in East Worthing from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Hard, crazed mastic that has stopped moving
- Water getting into walls through failed joints
- Failed seals between different materials
When it isn’t the sealant
New sealant cannot fix everything, and we’ll tell you before work begins. Sealant will not put right:
- Cracked brickwork or render that needs a builder or plasterer
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Subsidence or other structural problems
Not sure which it is? You can call 0345 464 0079 or email us and we’ll tell you honestly before booking.
Where we work in East Worthing
- Concrete & block
- Façade panels
- Brickwork movement joints
- Copings & trims
- Render & cladding joints
- Joints between brick and frames
External mastic for homes and businesses in East Worthing
We cut out failed sealant, set the joint depth with closed-cell backing rod and reseal with a low-modulus exterior sealant. We pick a colour that sits well with the wall so the joint does not stand out. We work on joints between brick and frames, concrete & block and copings & trims, and common reasons people get in touch are rigid filler in a joint that should flex and brick movement joints where the sealant has split.
Outbuildings, garages and conservatories around homes in places like East Worthing add more joints to look after. Leaks generally start at a gutter end, a garage door frame or where an extension meets the house.
Your job is guaranteed for a year, as with all our work.
- Where
- East Worthing (BN11, BN14, BN15)
- Region
- West Sussex
- Cover
- A year, on every job
- Price
- A clear price before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
The process
When we get to you, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. Most jobs then take a few hours for a handful of joints, longer for a whole elevation. For a job in East Worthing, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We start by walking round the building and agreeing the joints and the access.
- Every bit of old sealant and any mortar or debris is cut out.
- The faces are brushed clean and primed where the product requires it.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Preparing for the visit
- Let us know about stairs, lifts or work at height
- Clear items away from the joints we are working on
- For indoor joints, keep the area dry beforehand if you can
Get a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. Whenever you’re ready, call 0345 464 0079 or send us an email.
Related advice
What happens if it’s left?
Pointing a movement joint with mortar might seem a neat fix, but it stops the joint moving. The movement then cracks the brickwork or render nearby. The correct repair is a flexible sealant with the right backing. Homes in smaller places like East Worthing can face more weather, and failed outside joints let damp into walls. Inside, a split seal lets water into floors and panels just as it would anywhere.
We do not show prices on the website, because each job is priced on what it involves. For a quick quote, please phone 0345 464 0079 or drop us an email and we will talk you through it.
Why East Worthing clients choose us
- Any old sealant cut out fully, not covered over
- Over 20 years’ experience
- 180+ five-star Google reviews
- White, clear, grey or another colour, product permitting
Looking after it afterwards
Looking after new joints is easy, and it makes a real difference:
- Wash walls gently around the sealant
- Act on the first splits you see
- Show decorators and builders where the movement joints are
- Fix overflowing gutters above sealed joints
Keep pressure washers away from the sealant. High-pressure water can lift the edges and let water in behind.
Small splits are the time to act. At that stage it’s a simple cut out and reseal.
What affects the quote in East Worthing
For a quick quote, just ask. What matters most is:
- How easy the joints are to reach
- The size of the job
- How much old sealant there is and how hard it is to remove
- Mould in or behind the old joints
What it costs depends on the size of the job, how hard the old material is to remove and access to the work. You’ll have a clear quote before any work starts.
Helping us quote
When you contact us, these details help:
- If someone has resealed it before
- Where the job is, and your postcode
- The rough size of the job
- The problem you’ve noticed
To get a quote, call 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. We’ll give you a clear price before any work starts.
Towns and villages near East Worthing
More services for East Worthing
External mastic in East Worthing: local notes
East Worthing is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is hard on movement joints and outside wall joints, especially on the side facing the sea. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you let a flat or house near East Worthing station, failed wall and movement joints let damp in, so they’re worth checking between tenancies. For site and facilities teams at buildings such as Lyndhurst Infant School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. Homes close to St George's Church include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant.
East Worthing is about 2 miles south-west of Lancing, in West Sussex. From the centre of East Worthing to the outskirts, external mastic is available for homes and businesses alike, from flats and houses to offices and hotels. East Worthing is one of 371 towns and villages in West Sussex where we work for external mastic. We also work in Brighton, around 10 miles away.
All of BN11, BN14 and BN15 is within our area for external mastic, from the main roads to the quietest streets. Local streets include Ham Road, Eldon Road and Ophir Road. We also cover Sompting (1 mile north), Broadwater (1 mile north-west), Lancing (2 miles north-east), Offington (2 miles north-west) and Worthing (2 miles west). Larger places within reach include Bognor Regis (15 miles west), Burgess Hill (14 miles north-east), Littlehampton (8 miles west), Shoreham-by-Sea (4 miles north-east), Rustington (7 miles west) and Storrington (9 miles north-west).
Around East Worthing
Locally, jobs take us to homes and businesses close to Davison Church of England High School for Girls, Half Brick pub and Beach House Park and the streets around them. For rail, the closest station is East Worthing station, roughly 0.6 miles north. Well-known places in the area include Old Castle (2.1 miles north-west) and Museum of Sussex Folklore (2.1 miles north-west). For a walk, there’s Lancing Ring and Widewater Lagoon.
What the job involves on each surface
Joints between dissimilar materials
Each side of the joint may need its own preparation. We prepare both faces so the sealant bonds properly.
Cladding and façade panels
Cladding and façade panels are normally separated by sealed joints. We reseal them with a sealant suited to the panel material.
Questions from East Worthing
Is external mastic in a coastal place like East Worthing any different?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Do you cover smaller places like East Worthing?
Yes, we do. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Will you leave a mess?
No. We protect the surfaces around the joints, and we tidy up before we go.
Do you take out the old sealant first?
Yes. Sealing over the old bead is the commonest cause of early failure, so we never do it.
Can you seal joints between render and window frames?
Yes. Joints between dissimilar materials are a big part of external work. We use a flexible sealant suited to both surfaces, primed where needed.
How long does the job take?
Typically it takes a few hours for a handful of joints, longer for a whole elevation. Bigger jobs take longer, and we’ll tell you how long to expect.
What is backing rod for?
Backing rod goes into deeper joints as a matter of course. It controls the depth and stops the sealant bonding to the back so the bead can stretch.
Where do you work from?
We are based in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
Can I do it myself?
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
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 does not work out, we can still put it right.