East Sussex · England
Westham New Build Mastic
New build mastic across Westham and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Cracked sealant around new window and door frames
- Joints pulling apart as timber shrinks
- Sealant work across a run of new homes
How to look after the new joints
Looking after new joints is easy, and it makes a real difference:
- Look at the sealant regularly in the first couple of years
- Keep water off fresh sealant until it has cured
- Report sealant problems to your builder during the snagging period
- Record problems with dated photos
Watch the joints as the house settles. Hairline gaps can open as timber and plaster dry, and they’re simple to reseal once movement has slowed.
Report failed sealant to the builder while you’re in the snagging period. After that, putting it right may fall to you.
New build mastic in Westham, done properly
Snagging sealant properly means taking the failed bead out completely. Fresh silicone can’t bond to the old layer, so the joint is cut out, cleaned, dried and resealed. We work on bathrooms & en suites, plot handovers and windows & doors, and people most often call us about beads laid onto grit and dust from the build and frame joints opening as the plaster dries.
Somewhere as small as Westham, new homes tend to be conversions, self-builds or a few houses rather than an estate. Every one needs its sealant and floor joints done properly, whatever the size of the site.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Where
- Westham (BN24)
- Wider area
- East Sussex
- Guarantee
- 12 months on all our work
- Price
- A clear price before work begins
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
What happens on the day
We work through the job in order: protect, prepare, seal, tidy. Typically it takes anything from a few hours to several days, depending on the number of plots. For a village or hamlet like Westham, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- We start by going through the snagging items or plot schedule with you.
- The failed sealant is removed completely.
- We clean out the dust and grit left from the build.
- Primer goes on where the surface and product need it, then the new sealant.
- Each bead is tooled and the cure times explained.
How to prepare
- Let us know if you’ve seen damp or leaks
- Let us know about stairs, lifts or work at height
- Tell us about any previous sealing or DIY attempts
Ask for a quote
Need a quote? Please phone 0345 464 0079 or send us an email and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
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How the job changes by surface
Windows and doors
On new builds, external frame sealant can be patchy. It’s resealed with an exterior sealant suited to the frame and wall.
Show homes
Bathrooms, kitchens and frames in show homes are sealed or resealed to a neat finish. We’ll plan around viewing times.
How we quote for new build mastic
Call for a quick quote. What matters most is:
- How much old sealant there is and how hard it is to remove
- Mould in or behind the old joints
- The number and length of the joints
- How many rooms, windows or areas are involved
The cost reflects the work involved, not a rough estimate. That is why we ask about the job first and agree the price before starting.
Helping us quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- What’s wrong with the joints now
- The address or postcode of the job
- The rough size of the job
- Any access issues, like height or stairs
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we will explain what’s involved before giving you a price.
Honest limits
A few problems are outside what sealant work can do:
- Plumbing faults behind the sealant
- Cracked trays, tiles or worktops
- Baths and trays that move too much for sealant to cope with
If in doubt, call 0345 464 0079 or email us and we will say what we think before you book.
Joints and surfaces we work on
- Show homes
- Skirting & floors
- Bathrooms & en suites
- Windows & doors
- Plot handovers
- Kitchens
Common questions in Westham
Can you do new build mastic in Westham?
Yes, Westham is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or email us and tell us what needs doing, and we’ll give you a clear quote.
Do you cover smaller places like Westham?
Yes. Westham is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you take out the old sealant first?
Always. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Is it normal for sealant to crack in a new home?
It’s common, and there are usually two reasons: movement as the house dries and settles, and sealant laid onto dust without primer. Cutting it out and resealing properly fixes both.
Will you just run a new bead over the existing one?
No. New silicone will not bond to old silicone, so sealing over the top fails quickly. The old sealant always comes out first.
Should I wait before resealing?
It depends on whether water is getting through. Failed seals in wet areas need doing now, but cosmetic gaps can wait for movement to slow.
Do you have insurance?
Yes. We’re fully insured for every job we do.
Can I add another job to the visit?
Yes, and it often makes sense. Doing several areas at once is usually more efficient, so mention them when you ask for a quote.
Landlords, agents and businesses in Westham
Housing providers, facilities teams and property managers book us too in Westham and across East Sussex. We can quote a run of properties together.
If you manage several properties in or around Westham, several properties can be quoted together. Send us the addresses and the work at each, and photos by email help.
Joints and finishes in Westham homes
Westham is close to the coast. New homes near the sea put their outside mastic to work from day one, so it’s worth checking at snagging. 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.
For new homes near Pevensey & Westham station, it’s worth checking the sealant early, while snags are still fresh. Around Westham, as everywhere, new build mastic is only as good as the preparation behind it.
Westham is about 3 miles north-east of Eastbourne, in East Sussex. Jobs in Westham get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. 289 places in East Sussex are on our list, large and small. You can also see our page for Brighton, roughly 20 miles from Westham.
All of BN24 is within our area for new build mastic, from the main roads to the quietest streets. If you need new build mastic at a property on High Street, Linkway and Rattle Road or a nearby road, our applicators can take on the job. If you are just outside Westham, we cover Jenkins' Green (1 mile north-west), Pevensey (1 mile east), Langney (1 mile south), Pevensey Bay (2 miles east) and Wartling (3 miles north-east). Within a short drive, we also cover Eastbourne (3 miles south-west), Hastings (11 miles east), Bexhill-on-Sea (7 miles east), Seaford (10 miles west), Lewes (14 miles west) and Hailsham (4 miles north-west).
Local landmarks in Westham
In Westham, that means homes and buildings near Bishop Bell School and The Heron pub, among other places. Westham has its own railway station: Pevensey & Westham station. Other landmarks nearby include Pevensey Castle (0.6 miles east) and Eastbourne District General Hospital (3.1 miles south-west). Green spaces nearby include Combe Hill.
Towns and villages near Westham
Also in Westham
What happens if it’s left?
A quick bead over the top of the old sealant can look fine at first, but it cannot bond to what’s underneath. Taking it all out and starting again is the only way to get a lasting seal. Older cottages and farmhouses around Westham can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you’re not sure whether it needs doing, phone 0345 464 0079 or send us an email and we will give you an honest view and a quote.
Why Westham clients choose us
- Fully insured
- Arbo and Everbuild products
- You choose the colour before work begins
- A sealant colour to suit the surroundings