East Sussex · England
Selmeston New Build Mastic
New build mastic in Selmeston from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Sealant applied over dusty or wet surfaces
- Gaps between new skirting and floors
- New-build shower sealant that has already split
New build mastic for homes and businesses in Selmeston
Developers send us the plot schedule and we work through it. We seal bathrooms, kitchens, windows, doors and skirting so plots are ready to hand over using the right product for each joint. We work on bathrooms & en suites, skirting & floors and kitchens, and the jobs we see most are cracked sealant around new window and door frames and second-fix sealing on new plots.
For a small place like Selmeston, the journey and access are planned in advance, and the work itself is the same as on any site.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we’ll put it right.
- Place
- Selmeston (BN26)
- Region
- East Sussex
- Cover
- A year, on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
What we cannot put right
In fairness, some problems need a different trade:
- Settlement cracks that need a surveyor
- Baths and trays that move too much for sealant to cope with
- Disputes or warranty claims with your builder
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly before you book.
Surfaces we seal
- Skirting & floors
- Kitchens
- Bathrooms & en suites
- Show homes
- Windows & doors
- Plot handovers
Why deal with it now?
DIY kits do not solve the main problems with new-build sealant: dust, no primer and old sealant left in the joint. Proper removal and preparation are what make it last. In a small place like Selmeston, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are unsure, ring 0345 464 0079 or drop us an email and we’ll give you an honest view and a quote.
What you get with us
- 4.9 on Google from 180+ five-star reviews
- Sanitary silicone with an anti-fungal additive in wet areas
- Any old sealant cut out fully, not covered over
- More than 20 years in sealant work
Read what affects the cost and what customers say.
Joints and finishes in Selmeston homes
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.
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.
Selmeston is about 5 miles north of Seaford, in East Sussex. Jobs in Selmeston get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Our East Sussex coverage runs to 289 places, and Selmeston is one of them. You can also see our page for Brighton, about 12 miles away.
Postcode districts we cover here for new build mastic: BN26. Whether your property is on The Street and Lewes Road or a nearby road, our applicators can take on the job. We also cover Alciston (1 mile south), Berwick (1 mile east), Ripe (2 miles north), Winton (2 miles south) and Wickstreet (2 miles north-east). We also work in nearby towns such as Eastbourne (7 miles south-east), Bexhill-on-Sea (14 miles east), Seaford (5 miles south), Lewes (6 miles west), Hailsham (5 miles east) and Crowborough (14 miles north).
Landmarks near Selmeston
We work in homes and buildings around The Barley Mow pub. The nearest railway station is Berwick (Sussex) station, roughly 1 mile east. Nearby you’ll also find Drusillas Museum (1.8 miles south-east) and Chailey Heritage Marine Hospital (5.3 miles south-west). Open spaces near Selmeston include Firle Beacon.
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Get a leaking seal dealt with straight away
- Record problems with dated pictures
- Wait for the cure time before using a resealed shower
- Ventilate bathrooms well, especially in the first year
Photograph failed sealant before it’s redone and keep the builder’s replies. It’s useful if you need to raise other issues later.
Report failed sealant to the builder while you are in the snagging period. Once it ends, the repair may be down to you so report it promptly.
For landlords and businesses
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can go on one quote.
Housing providers, facilities teams and property managers book us too in Selmeston and across East Sussex. We can quote a run of properties together.
Should I try it myself first?
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly.
More services for Selmeston
Signs you need new build mastic in Selmeston
The first winter with the heating on dries a new home quickly. Skirting, frames and worktops pull away slightly.
The problems people normally mention when they call include:
- Sealant work across a run of new homes
- Cracks appearing as a new home settles
- Shower seals failing in the first year or two
- Kitchen sealant that has pulled off the wall
In and around Selmeston, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Questions to ask before booking
- How long to leave it before use
- Whether they seal over old material or remove it
- The length of the guarantee
- What happens if they find a problem under the old sealant
Questions from Selmeston
Is Selmeston within the area you cover?
Yes, Selmeston is covered. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Is Selmeston in your area for new build mastic?
Yes. We work across London and the South East, and Selmeston is part of that. Just phone 0345 464 0079 or email us with a few details of the job.
Is it messy?
No. We protect the surfaces around the joints, and we tidy up before we go.
How long should I leave it?
Many sealants skin over quickly but take longer to cure fully. We’ll give you the cure time for the product we used before we leave.
Should I wait before resealing?
Where water is getting through, don’t wait. Hairline cosmetic gaps can wait until the house has settled.
What does new build mastic cost?
We do not publish prices, because the cost depends on the job: its size, the old material, access and the product needed. You will get a clear quote before any work starts.
Can tenants book the work?
Yes. Check with your landlord; we can send the quote to them too.
Do you work through snagging lists?
Yes. Photos of each sealant item help us quote. Items that need a plumber, tiler or the builder are flagged.
What happens on the day
There is not much for you to do on the day. Point us to the joints and we’ll get on with it. The job generally takes a few hours for most snagging lists, longer for a run of plots, including the tidy-up. For a village or hamlet like Selmeston, 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 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.
Before we arrive
- Keep children and pets away from the work area
- Try not to wet indoor joints just before the visit
- Mention any tricky access
How to get a quote
For a quick quote, get us on the phone, or email us if that’s easier. Tell us about the joints that need doing and we will talk you through the work.