Brighton and Hove · England
New Build Mastic in Stanmer
Our applicators work in Stanmer on plot mastic for developers and snagging failed sealant in new homes. Old material cut out, joints cleaned and sealed neatly and a 12-month guarantee.
- New-build shower sealant that has already split
- Messy sealant that spoils new finishes
- Cracks appearing as a new home settles
How the visit works
You do not need to clear the whole room or building, just the space around the work. Everything nearby is protected, and the work takes a few hours for most snagging lists, longer for a run of plots in most cases. For a village or hamlet like Stanmer, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We look at why each joint failed, including any movement.
- We remove the failed sealant and clean the joints.
- 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.
Preparing for the visit
- On commercial sites, let us know about site rules
- Clear the area around the work
- Tell us about any water getting in
Ask for a quote
Every job is quoted individually, so the first step is telling us about yours. Simply call 0345 464 0079 or send us an email and describe the job and send photos if you have them.
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New build mastic for homes and businesses in Stanmer
We work in new homes and on new-build sites across Stanmer. Whether it’s one en suite or a run of plots, the method is the same: cut out, clean, prime where needed and reseal neatly. We work on windows & doors, skirting & floors and show homes, and people most often call us about leaking shower tray seals in a new home and gaps opening as the house dries out and settles.
Older homes in small places like Stanmer often have timber floors that move with the seasons, which is why skirting and threshold joints need a flexible sealant, not filler.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we’ll put it right.
- Place
- Stanmer (BN1)
- Region
- Brighton and Hove
- Cover
- A year, on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Places near Stanmer
Other services in Stanmer
When to call us in Stanmer
The first winter with the heating on dries a new home quickly. Gaps open along skirting, frames and worktops and cracked sealant shows up.
People generally contact us when they notice one of these:
- Frame joints opening as the plaster dries
- Untidy sealant flagged on a snagging list
- Cracks appearing as a new home settles
- Beads laid onto grit and dust from the build
In and around Stanmer, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Before you book anyone
- The length of the guarantee
- Whether the sealant suits the joint
- Is VAT in the price?
- Who does the work, and how experienced they are
What we can’t put right
We will not take on work that will not last, so here’s what sealant cannot put right:
- Plumbing faults behind the sealant
- Damaged fittings that need replacing
- Structural cracks in walls or ceilings
If in doubt, phone 0345 464 0079 or email us and we will say what we think.
Surfaces we seal
- Plot handovers
- Windows & doors
- Kitchens
- Bathrooms & en suites
- Skirting & floors
- Show homes
Your questions about new build mastic in Stanmer
Do you work for landlords with property near Falmer station?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before any work starts.
Do you cover Stanmer for new build mastic?
Yes. We work across London and the South East, and Stanmer is part of that. Just phone 0345 464 0079 or drop us an email with a few details of the job, and we’ll give you a clear quote.
When is the best time to reseal in a new build?
Where water is getting through, do not wait. Hairline cosmetic gaps can wait until the house has settled.
Do I need to be at home?
For indoor joints, yes, someone needs to let us in. Once we’ve agreed the job, you don’t need to watch us work.
Is there a guarantee?
Yes, for a year. If anything isn’t right with the work within the year, let us know and we will sort it.
Where is Mr Mastic based?
Our base is Crawley. Our area covers South East England, London and Scotland.
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.
What do you need from me for a quote?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Landlord and commercial work in Stanmer
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we will quote.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
Different surfaces, different methods
Skirting and floors
Gaps under skirting are one of the most common new-build snags. We seal it with a flexible sealant that copes with the movement.
Bathrooms and en suites
Baths, showers, basins and trays in new bathrooms are the most common new-build reseal. The old sealant comes out and anti-fungal sanitary silicone goes in after cleaning and priming.
Joints and finishes in Stanmer homes
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you’ve bought a new home near Falmer station, the sealant around baths, showers and frames is worth checking in the first year or two.
Stanmer is about 3 miles north-east of Brighton, in Brighton and Hove. For new build mastic in and around Stanmer, it’s easy to get a quote: please call 0345 464 0079 or send us an email. We are based in Crawley and cover Brighton and Hove. Our Brighton and Hove coverage runs to 30 places, Stanmer among them.
Postcode districts we cover here for new build mastic: BN1. Neighbouring places we cover for new build mastic include Hollingbury (1 mile south-west), Moulsecoomb (2 miles south), Bevendean (2 miles south), Patcham (2 miles west) and Hollingdean (2 miles south-west). Further out, we also cover Brighton (3 miles south-west), Brighton and Hove (4 miles south-west), Hove (4 miles south-west), Carlton Hill (3 miles south), Hanover (3 miles south) and West Hill (3 miles south-west).
What’s near Stanmer
We work in homes and buildings around Stanmer Park, University of Sussex Library and Brighton Aldridge Community Academy, among other places. The closest station to Stanmer is Falmer station, about 0.8 miles south-east. A little further out are Clayton Castle (3.4 miles north-west) and Churchill Square (3.7 miles south-west). For a walk, there’s Ditchling Beacon and Ladies Mile.
What affects the quote in Stanmer
Jobs vary more than people expect. The main factors:
- The number of rooms or windows
- Any working-time requirements on site
- Whether old sealant or filler has to be cut out
- Which sealant suits the joint
The cost depends on how much there is to do, how much old material has to come out and access to the work. You’ll have a clear quote before any work starts, so you know where you stand.
Helping us quote
When you call or email, it’s useful to know:
- How many joints, rooms or windows are involved
- The address or postcode of the job
- Whether it has been sealed before
- What’s wrong with the joints now
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. When it suits you, ring 0345 464 0079 or email us.
DIY sealant or a professional job?
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is.