West Sussex · England
Cocking New Build Mastic
Plot mastic for developers and snagging failed sealant in new homes for homes and businesses in Cocking and across West Sussex. Fully insured, ARBOMaster approved and guaranteed for a year.
- Cracked sealant around new window and door frames
- Gaps behind new kitchen upstands
- Cracked caulk along new skirting
New build mastic in Cocking
We work in new homes and on new-build sites across Cocking. Whether it’s one en suite or a run of plots, the method is the same: remove, clean, prime where needed, then a neat new bead. If you have worktop and upstand sealant coming away and frame joints opening as the plaster dries, we can help.
In a village or hamlet like Cocking, new homes are more likely to be a barn conversion or a handful of houses than a big estate. Each still needs its sealant and floor joints finished properly.
All our work is covered by our one-year guarantee, wherever you are in West Sussex.
- Where
- Cocking (GU29)
- Wider area
- West Sussex
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What happens on the day
When we get to you, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. After that, the work takes a few hours for most snagging lists, longer for a run of plots. Somewhere like Cocking needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- First, the list of joints is agreed from your snagging sheet or plot schedule.
- Every bit of the old builder’s sealant is cut out, with no layer left behind.
- We clean out the dust and grit left from the build.
- We prime where needed and apply a sealant suited to each joint.
- Each bead is tooled and the cure times explained.
Preparing for the visit
- Tell us about any water getting in
- Tell us if parking is tricky
- Tell us about any previous sealing or DIY attempts
Get a quote
Want a quote for new build mastic? Please phone 0345 464 0079 or email us and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
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New homes and floors in Cocking
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
In and around Cocking, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint. For jobs in and around Cocking, choosing the right material for each joint is as important as a tidy finish.
Cocking is about 8 miles north of Chichester, in West Sussex. We provide new build mastic to homes and businesses in Cocking and nearby. Cocking is one of 371 places in West Sussex we cover. For nearby work, see our Portsmouth page, about 17 miles away.
Every address in GU29 is within our area for new build mastic. That includes homes and businesses on Bell Lane, The Croft and Cherry Close and the roads around them. Close by, we work in Bepton (1 mile north-west), Heyshott Green (1 mile north-east), Cocking Causeway (1 mile north), Heyshott (1 mile east) and Bepton Common (2 miles north). Within a short drive, we also cover Bognor Regis (12 miles south), Chichester (8 miles south), Selsey (15 miles south), Littlehampton (14 miles south-east), Emsworth (11 miles south-west) and Rustington (14 miles south-east).
Landmarks near Cocking
Well-known places in the area include Midhurst Community Hospital (3 miles north) and Midhurst Museum (2.5 miles north). The countryside around Cocking includes Levin Down and Iping and Stedham Commons.
How we quote for new build mastic
The price is agreed before any work begins. It’s based on:
- Which sealant suits the joint
- The size of the job
- Mould in or behind the old joints
- How much old sealant there is and how hard it is to remove
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all play a part.
Asking for a quote
You don’t need to know the technical terms. Just tell us:
- What’s wrong with the joints now
- Where the property is
- If someone has resealed it before
- If it’s domestic, commercial or a hotel
There’s no standard price list, because every job is different. Instead, your job gets its own clear quote. To arrange one, phone 0345 464 0079 or send us an email.
Why it’s worth doing now in Cocking
Small cosmetic gaps can wait for the house to settle, but water getting through cannot. Not sure whether yours can wait? You can ring 0345 464 0079 or email us with a few photos. Around Cocking, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
The cost depends on how much there is to do, how hard the old material is to remove and how easy the joints are to reach. You’ll have a clear quote before any work starts, so you know where you stand.
Why book with us
- You choose the colour before work begins
- We never seal over old sealant
- Quality sealants from Arbo and Everbuild
- ARBOMaster approved applicator
See our cost guide or our reviews.
Honest limits
To be straight with you, there are a few things sealant won’t fix:
- Leaks from pipes, valves or wastes, which need a plumber
- Structural cracks in walls or ceilings
- Baths and trays that move too much for sealant to cope with
If in doubt, ring 0345 464 0079 or drop us an email and we’ll say what we think before booking.
Where we work in Cocking
- Skirting & floors
- Show homes
- Kitchens
- Windows & doors
- Plot handovers
- Bathrooms & en suites
How the job changes by surface
Windows and doors
Internal joints between frames and plaster often crack as a new house dries. We cut out the cracked bead and reseal with a flexible sealant.
Skirting and floors
New homes often develop a gap between skirting and floor. We seal it with a flexible sealant that copes with the movement.
Common questions in Cocking
Can you do new build mastic in Cocking?
Yes, Cocking is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or send us an email with a few details of the job.
Will you come out to Cocking?
Yes, Cocking is covered. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Should I wait before resealing?
For failed seals that let water through, the best time is now. Cosmetic gaps can wait until the first year or two of movement has passed.
Will you just run a new bead over the existing one?
No. Sealing over old sealant looks fine for a few weeks, then lifts. All the old sealant comes out before any work starts.
I’m a tenant. Can you help?
We can work for tenants, landlords or agents. Get your landlord’s agreement first.
Can landlords and businesses book you?
Yes. As well as homeowners, we work for landlords, agents, businesses and hotels across West Sussex.
Can you do plot mastic on a new development?
Yes. Plot mastic and second-fix sealing for developers is part of our work. Send the schedule and any specification and we will give you a quote.
Which products do you use?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We will tell you what we are using and why.
How to look after the new joints
A little care helps the new joints last. Our advice:
- Avoid scourers and strong chemicals on sealant
- Put sealant faults on your snagging list early
- Act quickly if a seal starts to leak
- Follow the cure time we give you
Photograph failed sealant before it’s redone and keep the builder’s replies. It’s useful if you need to raise other issues later.
If a shower tray or bath seal splits in the first year, look for movement. Have it resealed, and the tray or bath checked, before it gets worse.
For landlords and businesses
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements.
For anyone letting property in or around Cocking, several properties can be quoted together. Just tell us the addresses and what each one needs, and photos by email help.