East Sussex · England
New Build Mastic in Eastbourne
New build mastic across Eastbourne and nearby, with old sealant always removed completely and a 12-month guarantee.
- Untidy sealant flagged on a snagging list
- New-build shower sealant that has already split
- Gaps opening as the house dries out and settles
New build mastic in Eastbourne, done properly
Some owners wait for the first year’s movement before having joints redone. That makes sense for small gaps that are just cosmetic, but a seal that is letting water through needs doing now. Common call-outs are for gaps behind new kitchen upstands and cracks appearing as a new home settles, across skirting & floors, bathrooms & en suites and plot handovers.
Commercial units around a large town like Eastbourne generally have concrete floors with joints that need filling and resealing as they wear. At home, it’s the same idea on a smaller scale: skirtings, thresholds and shower seals.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we will sort it.
- Place
- Eastbourne (BN23, BN22, BN21, BN20)
- Region
- East Sussex
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Different surfaces, different methods
Kitchens
Worktop, upstand and sink joints in new kitchens often get a hurried bead. We take it out and reseal neatly, colour-matched where it shows.
Windows and doors
On new builds, external frame sealant can be patchy. We reseal it with a weatherproof, flexible sealant.
How to look after the new joints
After the cure time, these simple habits help:
- Open a window or run the fan after bathing
- Record problems with dated photos
- Report sealant problems to your builder during the snagging period
- Look at the sealant regularly in the first couple of years
Watch the joints as the house settles. Hairline gaps can open as timber and plaster dry.
If a shower tray or bath seal splits in the first year, look for movement. Getting it resealed properly, and any movement checked, stops it recurring.
Towns and villages near Eastbourne
More services for Eastbourne
New build mastic around Eastbourne
Eastbourne is close to the coast. New homes near the sea put their outside mastic to work from day one, so any gaps are best picked up early. London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For new homes near Hampden Park station, it’s worth checking the sealant early, while snags are still fresh.
Eastbourne is in East Sussex. From the centre of Eastbourne to the outskirts, new build mastic is available for homes and businesses alike. Our East Sussex coverage runs to 289 places, and Eastbourne is one of them. Brighton is on our list too, around 19 miles away.
We work across BN23, BN22, BN21 and BN20 for new build mastic. Whether your property is on Vine Square, Ashford Square and Howard Square or a nearby road, we can help. Being close to the A22 and A259, Eastbourne is easy for our applicators to reach for new build mastic. Nearby, we also carry out new build mastic in Hampden Park (1 mile north-west), Upperton (1 mile south-west), Old Town (1 mile south-west), Ratton Village (2 miles west) and Meads (2 miles south). Larger places within reach include Hastings (13 miles north-east), Bexhill-on-Sea (9 miles north-east), Seaford (8 miles west), Lewes (14 miles north-west), Hailsham (6 miles north) and St Leonards (13 miles east). Eastbourne is one of the larger places we cover in East Sussex.
Around Eastbourne
Typical jobs here are in homes near Princes Park, Ratton School and The King's Arms Public House and the streets around them. The closest station to Eastbourne is Hampden Park station, about 0.7 miles north-west. Nearby you will also find Pevensey Castle (3 miles north-east) and Royal Sussex Regimental Museum (1 mile south-east). For a walk, there’s Combe Hill.
Questions from Eastbourne
Can you do new build mastic in Eastbourne?
Yes, Eastbourne is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or email us with a few details of the job.
What guarantee comes with new build mastic in Eastbourne?
All our work, in Eastbourne and everywhere else, comes with a 12-month guarantee. We are fully insured, and an ARBOMaster approved applicator.
I’m a tenant. Can you help?
Yes. Check with your landlord; we can send the quote to them too.
Will it make a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Where is Mr Mastic based?
We are based in Crawley, West Sussex, and we work across South East England, London and Scotland.
Can landlords and businesses book you?
Yes, often. Several properties can be quoted together, and between tenancies is a good time for the work.
Can you quote for more than one area?
Of course. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
Should I try DIY first?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
DIY sealant or a professional job?
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
If you’re set on DIY, put the effort into 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.
What we do, step by step
Good joint work is mostly preparation, and we don’t rush it. Every joint is cleaned and dried before new material goes in. All told, the work takes a few hours in a single home. Where a business in Eastbourne needs to stay open, out-of-hours working can be arranged, and homes are booked within our usual hours, Monday to Saturday.
- We look at why each joint failed, including any movement.
- Old sealant is cut out and the joints cleaned.
- We make sure the joints are dry and prime them if needed.
- New sealant goes in, with baths filled first so they’re at their heaviest.
- The finished joints are checked and the cure times given.
Getting ready for the visit
- Mention any tricky access
- Tell us if parking is tricky
- Plan for the work area to be out of bounds to pets and children
Get a quote
We quote each job on its own. Just phone 0345 464 0079 or drop us an email with the details, and photos are welcome.
Read more
What affects the quote in Eastbourne
Jobs vary more than people expect. What affects the quote:
- Which sealant suits the joint
- Whether there’s mould to deal with
- The old material and how stubborn it is
- The size of the job
We don’t show prices on the website, because each job is priced on what it involves. Call for a quick quote and we will talk you through it.
Asking for a quote
To make quoting easier, please include:
- Whether it has been sealed before
- The address or postcode of the job
- How many joints, rooms or windows are involved
- Pictures of the joints, sent by email
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we will talk you through the work and send you a clear quote.
What we cannot put right
We will not take on work that won’t last, so here’s what sealant cannot put right:
- Deciding who is responsible under a builder’s warranty
- Movement caused by a poorly fitted tray or bath
- Broken tiles or a split tray
If in doubt, call 0345 464 0079 or send us an email and we’ll say what we think before you book.
Where we work in Eastbourne
- Plot handovers
- Bathrooms & en suites
- Kitchens
- Windows & doors
- Skirting & floors
- Show homes
Do you need new build mastic in Eastbourne?
On many sites, sealant goes on in the final rush before handover. Dusty, unprimed joints are common, so the bead never bonds properly.
If you can see any of these, it’s time to have the joints looked at:
- Kitchen sealant that has pulled off the wall
- Skirting joints opening in the first winter
- Sealant work across a run of new homes
- Cracks appearing as a new home settles
In and around Eastbourne, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
What your quote should include
- How the joint is cleaned and prepared
- How much experience the applicator has
- What product goes in the joint
- What happens if they find a problem under the old sealant