West Sussex · England
Gutter, fascia & soffit sealing in Southwick, West Sussex
Professional gutter sealing in and around Southwick, with every bit of old sealant taken out first and a 12-month guarantee.
- Internal damp traced to a gutter joint
- Open joints in fascias and soffits
- Old sealant on roofline trims that has split
DIY sealant or a professional job?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
Gutter sealing for homes and businesses in Southwick
A drip at a gutter joint is easy to ignore, but the water lands on the same spot every time it rains. Sealing it is quick while the gutter is still sound. If you have open joints in fascias and soffits and old gutter sealant that has let go, we can help, on gutter end caps, garage door frames and uPVC fascias alike.
Homes around Southwick range from older cottages to newer houses, with walls and rooflines of every type. Older homes need their gutter and trim joints kept tight, newer ones their movement joints.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Place
- Southwick (BN42, BN41, BN43)
- Region
- West Sussex
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
What happens on the day
The work is kept neat and contained to the area we’re working on, so you can carry on as normal. Expect the work to take an hour or two for a few joints, longer for a full run, and we explain the cure time before we leave. Parking around Southwick is normally 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.
- First we trace the drip and check the gutter isn’t damaged.
- The old sealant and dirt are cleaned out of the joint.
- The joint is dried before sealing.
- We seal the joint with a sealant made for gutters.
- We check the run and clear debris near the joints.
How to prepare
- Clear the area around the work
- Tell us if parking is tricky
- Mention any tricky access
Getting a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. When it suits you, phone 0345 464 0079 or drop us an email.
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Outside joints around Southwick
Southwick is within about 1 mile of 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 gutter, fascia and roofline joints, especially on the side facing the sea. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Managing a site like Eastbrook Primary Academy? Then larger buildings have long runs of movement joint that eventually need resealing. In the older streets around St Michael and All Angels Church, the joints between older walls, newer extensions and the roofline need a sealant that can move. Letting a property close to Southwick station? Then leaking gutter joints on a rental are best caught before they stain the walls.
Southwick is about 2 miles east of Shoreham-by-Sea, in West Sussex. Jobs in Southwick get the same care as everywhere else we work: old sealant removed completely, careful preparation and a one-year guarantee. We cover 371 towns and villages across West Sussex, from the larger towns to small villages.
All of BN42, BN41 and BN43 is within our area for gutter sealing. That includes homes and businesses on Station Road, Roman Crescent and Southwick Street and the roads around them. Being close to the A259 and A270, Southwick is simple for us to get to. If you are just outside Southwick, we cover Kingston by Sea (1 mile north-west), Portslade (1 mile north-east), Shoreham-by-Sea (2 miles west), Hangleton (2 miles north-east) and Old Shoreham (2 miles west). Further out, we also cover Worthing (7 miles west), Haywards Heath (13 miles north-east), Burgess Hill (10 miles north-east), Littlehampton (13 miles west), Lancing (4 miles west) and Rustington (12 miles west).
What’s near Southwick
Around Southwick, our work takes us to homes and buildings near Shoreham Academy, Benfield Hill and The Ship Inn. Southwick has its own railway station: Southwick station. A little further out are Southlands Hospital (1 mile west) and Churchill Square (4 miles east). For a walk, there’s Shoreham Beach and Thundersbarrow Hill.
Honest limits
To be straight with you, some problems need a different trade:
- Sagging gutters or broken brackets
- Downpipes that are blocked or broken
- Problems with the roof covering
If in doubt, call 0345 464 0079 or drop us an email and we’ll say what we think before booking.
What we seal
- Garage door frames
- Roofline trims
- Gutter joints
- Soffit joints
- uPVC fascias
- Gutter end caps
Landlords, agents and businesses in Southwick
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we will quote.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Common questions in Southwick
Can you help a landlord with a rental near Southwick station?
Yes, we work for landlords and agents. You can call 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before work begins.
Does the coastal weather in Southwick affect outside sealant?
Near the sea, outside joints face more wind, rain and salt than they would inland, so the choice of sealant and the preparation matter even more. It’s worth checking the walls that face the sea first.
What do you put in the joint?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference, and we will tell you what we are using.
Will there be a smell?
Sometimes, a little. It fades as the sealant cures, and ventilation helps.
Do you remove the old sealant?
Yes. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
Do I need to be at home?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Where is Mr Mastic based?
Our base is Crawley, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Do you come to Southwick?
Yes. We cover Southwick and the rest of West Sussex. To book, call 0345 464 0079 or drop us an email.
Aftercare tips
After the cure time, these simple habits help:
- Look for streaks or damp on the wall below gutters
- Get leaks sealed before the wet months
- Clear leaves and moss from the gutters
- Check fascia and soffit joints for gaps
Make sure downpipes aren’t blocked so the gutter can drain. Blockages push water back along the gutter.
Split sealant on fascias and trims lets water in behind. Sealing it early keeps the boards behind dry and the wall below.
Quotes for gutter sealing in Southwick
For a quick quote, just ask. What matters most is:
- The number and length of the joints
- Whether the work is at height
- Whether old sealant or filler has to be cut out
- Mould in or behind the old joints
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs, along with when we can work on site. Ask us for a quote and we’ll explain what it covers.
Helping us quote
When you contact us, these details help:
- The problem you’ve noticed
- Any access issues, like height or stairs
- Whether it has been sealed before
- The address or postcode of the job
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.
Nearby places to Southwick
Also in Southwick
How the job changes by surface
uPVC fascias
Our work is the joints, not new fascias. If boards are damaged, we will tell you.
Garage door frames
The joint between frame and brickwork moves and weathers. An exterior sealant suits them.