West Sussex · England
New-build mastic & snagging in Southwick, West Sussex
Problem with your new-build sealant joints in Southwick? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Worktop and upstand sealant coming away
- Skirting joints opening in the first winter
- Sealant that never bonded to the surface
Looking after it afterwards
Looking after new joints is easy:
- Act quickly if a seal starts to leak
- Use the extractor fan every time you shower
- Put sealant faults on your snagging list early
- Look at the sealant regularly in the first couple of years
Clean the sealant with a mild detergent and a soft cloth. Avoid abrasive pads and strong solvents, which can damage the surface.
Don’t let the snagging period run out with sealant problems unreported. After that, putting it right may fall to you, so raise it early.
New build mastic in Southwick, done properly
For builders and developers, we work through plots to the schedule you give us. We seal bathrooms, kitchens, windows, doors and skirting so plots are ready to hand over with a sealant suited to each area. We work on show homes, windows & doors and plot handovers, and common reasons people get in touch are worktop and upstand sealant coming away and cracks appearing as a new home settles.
Homes around Southwick range from older cottages to newer houses, and their floors range just as widely, each moving in its own way. The sealant at skirtings and thresholds has to suit the floor it meets.
The work is covered for a year after we finish. If there’s a problem with it, please phone 0345 464 0079 or email us.
- Place
- Southwick (BN42, BN41, BN43)
- Wider area
- West Sussex
- Cover
- One year on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
What affects the quote in Southwick
You’ll get a clear quote before we start. It’s based on:
- The old material and how stubborn it is
- How easy the joints are to reach
- The number and length of the joints
- How many areas need sealing
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all make a difference, and we’ll explain the quote if you ask.
What to tell us for a quote
Before you ask for a quote, have a think about:
- The address or postcode of the job
- Any previous sealing or DIY work
- The rough size of the job
- If it’s domestic, commercial or a hotel
Asking for a quote is easy: let us know what needs doing and where, and roughly how big it is. Photos by email help us understand the job, and we’ll come back to you with a quote.
Signs you need new build mastic in Southwick
The wrong product is sometimes used in the wrong place: decorators’ caulk in a wet area, or a stiff sealant where there’s movement. Neither lasts long.
It’s worth asking for a quote if you see:
- Kitchen sealant that has pulled off the wall
- Gaps between new skirting and floors
- Sealant work across a run of new homes
- Untidy sealant flagged on a snagging list
If you’ve bought a new home near Southwick station, the sealant around baths, showers and frames is worth checking in the first year or two.
Comparing quotes
- How the surfaces are prepared before sealing
- What insurance they hold
- Who does the work, and how experienced they are
- The length of the guarantee
What sealant work can’t fix
New sealant can’t fix everything, and we’d rather say so up front. It won’t solve:
- Settlement cracks that need a surveyor
- Leaks from pipes, valves or wastes, which need a plumber
- Broken tiles or a split tray
Not sure which it is? You can phone 0345 464 0079 or send us an email and we will tell you honestly before booking.
Joints and surfaces we work on
- Kitchens
- Plot handovers
- Bathrooms & en suites
- Windows & doors
- Skirting & floors
- Show homes
How it works
On the day, there’s very little for you to do. Point us to the joints and we will get on with it. The job generally takes a few hours for most snagging lists, longer for a run of plots, including the tidy-up. A visit to Southwick is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We look at why each joint failed, including any movement.
- We remove the failed sealant and clean the joints.
- We make sure the joints are dry and prime them if needed.
- Baths are filled with water, then the new sealant is applied.
- The finished joints are checked and the cure times given.
Before we arrive
- Mention any parking rules near the property
- Keep pets and children clear of the area while we work
- Let us know if you’ve seen damp or leaks
Getting a quote
For a quote, call 0345 464 0079 or drop us an email with the location and a short description of the problem. You will have a clear quote before we start.
Related advice
DIY versus a professional finish
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
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 fails, we can still redo it.
Nearby places to Southwick
More services for Southwick
FAQs for Southwick
Is Southwick within the area you cover?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
I let a flat near Southwick station. Can you help?
Yes, we work for landlords and letting agents. Just call 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear price.
Are you fully insured?
Yes. Full insurance covers our work.
What does new build mastic cost?
Every job is different, so each one gets its own quote. To get one, ring 0345 464 0079 or send us an email and tell us what needs doing and where.
Do you hold any approvals?
Yes. We hold ARBOMaster approved applicator status and we are fully insured too.
Will you leave a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Can you work on commercial sites?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. We can talk about working times when we quote.
How long does the job take?
That depends on how much there is to do, but most jobs take a few hours in a single home. We’ll give you a better idea when we quote.
How the job changes by surface
Skirting and floors
New homes often develop a gap between skirting and floor. A flexible sealant closes it without cracking like caulk.
Windows and doors
Draughts around new frames are often a sealant gap. We look at the joints and reseal where needed.
New build mastic in Southwick: local notes
Southwick is within about 1 mile of the coast. Plot mastic on new homes near the coast takes more weather than it would inland, so it’s worth checking at snagging. The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
In and around Southwick, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Southwick is about 2 miles east of Shoreham-by-Sea, in West Sussex. We provide new build mastic to homes and businesses in Southwick, as part of our work across West Sussex. Southwick is one of 371 towns and villages in West Sussex where we work.
All of BN42, BN41 and BN43 is covered for new build mastic, from the main roads to the quietest streets. We cover properties on Station Road, Roman Crescent and Southwick Street. Southwick sits on or near the A259 and A270, which makes travel easy. Nearby, we also carry out new build mastic in 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). Within a short drive, 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).
Near you in Southwick
Locally, jobs take us to homes and businesses close to Shoreham Academy, Benfield Hill and The Ship Inn. There’s a railway station in Southwick itself: Southwick station. Well-known places in the area include Southlands Hospital (1 mile west) and Churchill Square (4 miles east). Not far away are Shoreham Beach and Thundersbarrow Hill.