West Sussex · England
External Mastic in Goring-by-Sea
We cover Goring-by-Sea for sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly.
- Water getting into walls through failed joints
- Hard, crazed mastic that has stopped moving
- Cracked joints where brick meets render or frames
What the job involves on each surface
Copings and trims
A failed coping joint lets water into the top of the wall. Resealing them is a small job that protects a lot.
Cladding and façade panels
Metal and composite panels move a lot with temperature, so the joint sealant has to cope with frequent movement. The sealant is chosen with that in mind.
External mastic for homes and businesses in Goring-by-Sea
A movement joint is a deliberate break that lets a wall expand and contract. Its sealant has to flex with the building, season after season, and when it fails, the wall takes the strain and water finds a way in. Common call-outs are for old sealant gone brittle and cracked and gaps where render, brick and frames meet, across concrete & block, joints between brick and frames and brickwork movement joints.
Houses in smaller places like Goring-by-Sea can stand more in the open than those in a built-up town, and walls and rooflines facing the weather take the worst of it. That’s where gutter joints and wall joints tend to fail first.
You are covered for a year from the day we finish. If anything is not right with it, phone 0345 464 0079 or email us.
- Location
- Goring-by-Sea (BN12, BN99, BN13)
- Region
- West Sussex
- Guarantee
- 12 months on all our work
- Quote
- A clear price before we start
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
DIY sealant or a professional job?
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
Signs you need external mastic in Goring-by-Sea
Weeds, moss and debris in a joint are a sign the sealant has gone. Dirt and roots then trap moisture in the joint and make things worse.
If you can see any of these, it’s time to have the joints looked at:
- Old sealant gone brittle and cracked
- Gaps where render, brick and frames meet
- Joints where the bead has come unstuck
- Plants rooting in failed movement joints
For an older house near a landmark such as St Mary's Church, an extension built onto an older house moves differently, and the joint between them takes the strain.
Comparing quotes
- What happens if they find a problem under the old sealant
- When the joint can take water or movement
- What guarantee comes with the work
- Whether they’re fully insured
What we do, step by step
The work is kept neat and contained to the joints we’re treating, so you can carry on as normal. The job generally takes anything from a few hours to several days, depending on the building, and we explain the cure time before we leave. Parking around Goring-by-Sea is generally easier than in a town centre, but mention any lanes, gates or long drives. For outside work, side access and the height of the joints help us plan.
- 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.
- Joint faces are cleaned back and primed if the sealant needs it.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
Preparing for the visit
- Mention any parking rules near the property
- Clear items away from the joints we are working on
- Where the joints are inside, avoid wetting them before we arrive
Ask for a quote
Getting a quote is simple: tell us what needs doing and where, and roughly how big it is. Photos by email help us understand the job, and we’ll take it from there.
Advice
When it is not the sealant
We will not take on work that will not last, so these are the limits:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Cracking across the wall rather than at a joint
- Failed render or damaged cladding panels
If in doubt, call 0345 464 0079 or email us and we’ll say what we think before booking.
Joints and surfaces we work on
- Render & cladding joints
- Brickwork movement joints
- Façade panels
- Joints between brick and frames
- Copings & trims
- Concrete & block
How to look after the new joints
After the cure time, these simple habits help:
- Don’t let climbing plants root in the sealant
- Ask before painting over external sealant
- Show decorators and builders where the movement joints are
- Look over the joints every year, ideally after winter
Avoid pressure-washing straight into the joints. A strong jet can damage the edges of the bead over time.
Small splits are the time to act. Then it’s a straightforward cut-out and reseal with no damage behind it to deal with.
What external mastic looks like in Goring-by-Sea
Goring-by-Sea is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you let a flat or house near Goring-By-Sea station, failed wall and movement joints let damp in, so they’re worth checking between tenancies. If you look after a building such as Goring-By-Sea CofE (Aided) Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Goring-by-Sea is about 1 mile south-west of Worthing, in West Sussex. From the centre of Goring-by-Sea to the outskirts, external mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Across West Sussex, we cover 371 places, and Goring-by-Sea is one of them. You can also see our page for Brighton, roughly 13 miles from Goring-by-Sea.
Every address in BN12, BN99 and BN13 is covered for external mastic. That includes homes and businesses on Sea Lane, Jupp's Lane and Goring Road. We also cover the places around Goring-by-Sea: Ferring (1 mile west), Hangleton (1 mile west), Kingston Gorse (2 miles west), Durrington (2 miles north) and West Kingston (2 miles west). Within a short drive, we also cover Bognor Regis (12 miles west), Littlehampton (5 miles west), Shoreham-by-Sea (7 miles east), Lancing (5 miles east), Rustington (4 miles west) and Storrington (8 miles north).
Near you in Goring-by-Sea
In Goring-by-Sea, that means homes and buildings near Durrington Minature Railway, Chatsmore Catholic High School and Worthing College. The closest station to Goring-by-Sea is Goring-By-Sea station, about 0.5 miles north-west. Well-known places in the area include Museum of Sussex Folklore (1.6 miles north-east) and The Acre (1.8 miles east). Green spaces nearby include Highdown Hill.
Questions from Goring-by-Sea
Do you cover smaller places like Goring-by-Sea?
Yes, Goring-by-Sea is covered. 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.
Does the coastal weather in Goring-by-Sea affect outside sealant?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
When is the sealant fully cured?
That depends on the sealant used, so please follow the time we give you when we finish.
Can you reach joints on upper floors?
It depends on the building. Tell us the height, the number of joints and what’s below them and we will confirm how they can be reached safely.
Do the sealants smell?
There can be a smell while the sealant cures. Opening a window helps.
Is it messy?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Can you seal joints between render and window frames?
Yes. The old joint is removed, both surfaces cleaned and primed where needed, and a flexible sealant applied. We pick a colour that works with both materials.
Can landlords and businesses book you?
Yes, regularly. Several properties can go on one quote.
What affects the cost of external mastic
Your quote is based on your job. We take into account:
- The number of rooms or windows
- Which sealant suits the joint
- When we can work, for business premises
- Whether there’s mould to deal with
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all make a difference.
What to tell us for a quote
When you contact us, it’s useful to know:
- Photos by email, if that’s easy
- Whether it has been sealed before
- If it’s domestic, commercial or a hotel
- Where the property is
Want a quote for external mastic? Please ring 0345 464 0079 or drop us an email and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.