Kent · England
Seasalter New Build Mastic
We cover Seasalter for plot mastic for developers and snagging failed sealant in new homes. Old sealant removed completely, joints prepared properly and a 12-month guarantee.
- Sealant work across a run of new homes
- Beads laid onto grit and dust from the build
- Messy sealant that spoils new finishes
When something else is needed
Sealant isn’t the answer to every problem, and we’d rather say so up front. It won’t solve:
- Cracked trays, tiles or worktops
- Leaking fittings rather than failed sealant
- Deciding who is responsible under a builder’s warranty
Not sure which it is? You can call 0345 464 0079 or drop us an email and we will tell you honestly before you book.
Where we work in Seasalter
- Bathrooms & en suites
- Show homes
- Kitchens
- Skirting & floors
- Plot handovers
- Windows & doors
New build mastic in Seasalter, done properly
For builders and developers, we work through plots to the schedule you give us. Bathrooms, en suites, kitchens, frames and skirting are sealed ready for handover using the right product for each joint. Typical jobs include kitchen sealant that has pulled off the wall and second-fix sealing on new plots, on windows & doors, show homes and plot handovers.
Around Seasalter, older homes often have timber floors that move through the year, which is why skirting and threshold joints need a flexible sealant, not filler.
A one-year guarantee comes as standard, so you’re not left on your own once the job is done.
- Location
- Seasalter (CT5)
- Wider area
- Kent
- Cover
- 12 months on all our work
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Common questions in Seasalter
Is Seasalter in your area for new build mastic?
Yes. Our work covers London and the South East, and Seasalter is part of that. You can call 0345 464 0079 or send us an email and let us know what needs doing, and we’ll give you a clear quote.
Will you come out to Seasalter?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Is it worth resealing while the house is still settling?
Any seal that’s leaking should be redone straight away. Cosmetic gaps can wait until the first year or two of movement has passed.
Do you remove the old sealant?
Always. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
Are you ARBOMaster approved?
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 tidy up before we go.
Can you reseal over the builder’s sealant?
No. Fresh silicone doesn’t stick to the old layer, so it soon lifts and traps water. The old sealant always comes out first.
Can I do it myself?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs.
Do you need new build mastic in Seasalter?
Fresh sealant can be knocked or cut by trades finishing off. A bead disturbed before it has cured may never seal properly.
The problems people generally mention when they call are:
- Sealant work across a run of new homes
- Joints pulling apart as timber shrinks
- Internal frame sealant that has split
- Kitchen sealant that has pulled off the wall
In and around Seasalter, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Questions to ask before you book
- Are they insured?
- Which colour the sealant will be
- Is VAT in the price?
- How long the guarantee is
Landlords, agents and businesses in Seasalter
Landlords and letting agents in Seasalter can book us as well as homeowners. Resealing between tenancies keeps a property looking cared for before the next move-in.
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
What new build mastic looks like in Seasalter
Seasalter 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. Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For new homes near Whitstable station, it’s worth checking the sealant early, while snags are still fresh.
Seasalter is about 2 miles west of Whitstable, in Kent. Anywhere in CT5, we cover new build mastic for homes and businesses. We cover 922 towns and villages across Kent. You can also see our page for Chelmsford, about 35 miles away.
We cover every part of the CT5 postcode area for new build mastic. Whether your property is on Eden Road, Allan Road and Church Lane or a nearby road, we can help. Other places close to Seasalter include Highstreet (1 mile south), Waterham (2 miles south-west), Dargate (2 miles south), Graveney (3 miles south-west) and Hernhill (3 miles south-west). Within a short drive, we also cover Ashford (15 miles south), Canterbury (6 miles south-east), Sittingbourne (11 miles west), Faversham (5 miles south-west), Herne Bay (6 miles east) and Minster (10 miles north-west).
Around Seasalter
In Seasalter, that means homes and buildings near The Jolly Sailor pub, The Whitstable School and Seasalter Levels. The closest station to Seasalter is Whitstable station, roughly 1.8 miles north-east. A little further out are Tankerton Castle (2 miles north-east) and Whitstable and Tankerton Hospital (2.5 miles north-east). Green spaces nearby include Blean Woods RSPB Reserve.
How the visit works
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. Most jobs then take anything from a few hours to several days, depending on the number of plots. Somewhere as small as Seasalter, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by agreeing which joints are on the list, from the snagging sheet or plot schedule.
- We cut out every bit of the failed or messy sealant.
- Surfaces are cleaned of building dust and primed where needed.
- We apply a sealant that suits each joint and tool it to a neat finish.
- Finally, each room is checked and you are given the cure time.
Getting ready for the visit
- Tell us about any previous sealing or DIY attempts
- Mention any sign-in or site rules at work premises
- Try not to wet indoor joints just before the visit
Get a quote
Every job is quoted individually, so start by telling us what you need. Simply call 0345 464 0079 or drop us an email and describe the job and send pictures if you have them.
Advice
What affects the cost of new build mastic
We don’t publish a price list, because no two jobs are the same. What we look at:
- How much old sealant there is and how hard it is to remove
- The number of rooms or windows
- Working hours on commercial sites
- The product the joint needs
What it costs depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. You will have a clear quote before any work starts, so you know where you stand.
What we need to know
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- A few photos by email, if you can
- Access, such as stairs, a lift or height
- The problem you’ve noticed
- Whether it’s a home or a business
To get a quote, call 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. We will give you a clear quote before any work starts.
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Places near Seasalter
What else we do in Seasalter
Aftercare tips
After the cure time, these simple habits help:
- Do not seal over failed sealant yourself
- Record problems with dated photos
- Raise failed sealant with the developer while you’re covered
- Act quickly if a seal starts to leak
Clean the sealant with a mild detergent and a soft cloth. Avoid abrasive pads and strong solvents, which can damage the surface.
A seal that splits early is often a sign of movement. Have it resealed, and the tray or bath checked, before it gets worse.