East Sussex · England
New-build mastic & snagging in Wilmington, East Sussex
Plot mastic for developers and snagging failed sealant in new homes for Wilmington, backed by a one-year guarantee. Call for a quick quote.
- Internal frame sealant that has split
- Leaking shower tray seals in a new home
- Gaps opening as the house dries out and settles
Wilmington: your questions answered
Do you cover Wilmington for new build mastic?
Yes, Wilmington is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or drop us an email with a few details of the job.
Will you come out to Wilmington?
Yes, Wilmington is covered. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you have insurance?
Yes. We’re fully insured for every job we do.
My new home is still under warranty. Should I contact you?
Start with the builder if you’re in the snagging or warranty period. Once that’s done, or if they will not put it right, we can reseal it properly.
Do you remove the old sealant?
Yes. We cut out all the old sealant and clean the joint before resealing.
Is it worth resealing while the house is still settling?
Where water is getting through, don’t wait. Small gaps that are just cosmetic can be resealed once movement has slowed.
Will you leave a mess?
Not at all. The area is protected while we work and cleaned up afterwards.
Does someone need to be in?
We need access to the joints, so we will agree that with you when we book. For inside work, that normally means someone being in.
How we handle new build mastic in Wilmington
A new house keeps drying out and settling for its first couple of years. Timber dries and shrinks, and baths and trays settle, so sealant that was laid quickly before handover often cracks. We work on bathrooms & en suites, plot handovers and windows & doors, and the jobs we see most are leaking shower tray seals in a new home and cracks appearing as a new home settles.
Older homes in small places like Wilmington often have timber floors that move with the seasons, which is why skirting and threshold joints need a flexible sealant, not filler.
A one-year guarantee comes as standard, so you are not left on your own once the job is done.
- Where
- Wilmington (BN26)
- Wider area
- East Sussex
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What new build mastic looks like in Wilmington
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you’ve bought a new home near Berwick (Sussex) station, the sealant around baths, showers and frames is worth checking in the first year or two. Around Wilmington, as everywhere, new build mastic is only as good as the preparation behind it.
Wilmington is about 4 miles south-west of Hailsham, in East Sussex. Homes, rented property, offices and hotels in Wilmington is covered for new build mastic, old or new, large or small. The work is guaranteed for a year. Our East Sussex coverage runs to 289 places, Wilmington among them. You can also see our page for Brighton, about 14 miles away.
Jobs for new build mastic in BN26 is quoted and booked the same way as anywhere else. Local streets include The Street and Ades Field, all of which we cover. Other places close to Wilmington include Milton Street (1 mile south-west), Winton (2 miles west), Arlington (2 miles north), Berwick (2 miles north-west) and Lullington (2 miles south-west). We also work in nearby towns such as Eastbourne (5 miles south-east), Bexhill-on-Sea (12 miles east), Seaford (5 miles south-west), Lewes (9 miles north-west), Hailsham (4 miles north-east) and Uckfield (11 miles north).
Near you in Wilmington
Locally, jobs take us to homes and businesses close to The Sussex Ox pub and the streets around them. The closest station to Wilmington is Berwick (Sussex) station, about 1.8 miles north-west. Nearby you will also find Agricultural Museum (under half a mile south) and Burlough Castle (1 mile west). Not far away are Combe Hill.
Should I try it myself first?
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
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.
Landlords, agents and businesses in Wilmington
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. Several properties can be quoted together.
We also work for property managers and facilities teams in Wilmington and across East Sussex. We can quote a run of properties together, and we’re fully insured.
Aftercare tips
After the cure time, these simple habits help:
- Act quickly if a seal starts to leak
- Open a window or run the fan after bathing
- Look at the sealant regularly in the first couple of years
- Wait for the cure time before using a resealed shower
Wipe the sealant with warm soapy water. Keep scourers and harsh chemicals off it, which can damage the surface.
A seal that splits early is often a sign of movement. Getting it resealed properly, and any movement checked, stops it recurring.
What affects the quote in Wilmington
We quote each job individually. This is what makes a difference:
- Mould in or behind the old joints
- How easy the joints are to reach
- How much old sealant there is and how hard it is to remove
- Working hours on commercial sites
What it costs depends on the amount of work, how much old material has to come out and access to the work. You will have a clear quote before any work starts.
Helping us quote
Before you ask for a quote, have a think about:
- The rough size of the job
- If someone has resealed it before
- The address or postcode of the job
- The type of property
We quote each job on its own. Simply phone 0345 464 0079 or email us and describe the job and send pictures if you have them.
Different surfaces, different methods
Show homes
In a show home, the sealant is on display. We lay neat, even beads in colours to suit the finishes.
Skirting and floors
As timber and screed dry, skirting and floors shift. Caulk cracks; a flexible sealant moves with it.
The process
Before we leave, we go over the finished joints with you and tell you how long to leave it. The visit itself normally takes a few hours in a single home, depending on the size of the job. In a small place like Wilmington, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each joint is checked for movement before work begins.
- Old sealant is cut out and the joints cleaned.
- Joints are dried and primed where the product calls for it.
- Baths are filled with water, then the new sealant is applied.
- The finished joints are checked and the cure times given.
How to prepare
- On commercial sites, let us know about site rules
- Let us know about stairs, lifts or work at height
- Let us know about parking restrictions
Ask for a quote
It all starts with a short chat. Describe the problem, the location and the size of the job. Whenever you are ready, phone 0345 464 0079 or drop us an email.
Advice
Also near Wilmington
What else we do in Wilmington
Why deal with it now?
Running a new bead over the builder’s sealant might look tidy for a few weeks, but it can’t bond to what’s underneath. A lasting seal starts with removing the old one completely. Around Wilmington, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, plus any working-time requirements on site. Call for a quick quote and we’ll go through it with you.
Why book with us
- Anti-fungal silicone where joints get wet
- Approved under the ARBOMaster scheme
- Every job guaranteed for a year
- More than 20 years in sealant work
Take a look at what affects the cost and customer reviews.