West Sussex · England
Selham New Build Mastic
Plot mastic for developers and snagging failed sealant in new homes in Selham, with a 12-month guarantee on every job. Call for a quick quote.
- Second-fix sealing on new plots
- Cracked caulk along new skirting
- Worktop and upstand sealant coming away
The process
When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. After that, the work takes a few hours for most snagging lists, longer for a run of plots. In a small place like Selham, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by going through the snagging items or plot schedule with you.
- Every bit of the old builder’s sealant is cut out down to clean surfaces.
- We clean out the dust and grit left from the build.
- Primer goes on where the surface and product need it, then the new sealant.
- We tool every joint neatly and tell you when each area can be used.
Before we arrive
- Clear the area around the work
- Mention any parking rules near the property
- Mention any tricky access
How to get a quote
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we’ll explain what’s involved.
Related advice
New build mastic in Selham
We work in new homes and on new-build sites across Selham. One shower or a whole phase of plots, the method does not change: remove, clean, prime where needed, then a neat new bead. If you have kitchen sealant that has pulled off the wall and untidy sealant flagged on a snagging list, we can help, on show homes, skirting & floors and windows & doors alike.
Somewhere as small as Selham, new homes tend to be conversions, self-builds or a few houses rather than an estate. Every one needs its sealant and floor joints done properly, whatever the size of the site.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we will put it right.
- Where
- Selham (GU28)
- Wider area
- West Sussex
- Cover
- One year on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Surface by surface
Bathrooms and en suites
En suite showers are a common source of leaks into the room below. Resealing properly keeps water where it belongs.
Windows and doors
On new builds, external frame sealant can be patchy. We reseal it with a weatherproof, flexible sealant.
FAQs for Selham
Do you cover smaller places like Selham?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Can you do new build mastic in Selham?
Yes, Selham is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job, and we’ll give you a clear price.
Are you fully insured?
Yes. We are fully insured for domestic and commercial work.
Can I add another job to the visit?
Yes. Tell us about everything you’d like done and we will quote it together.
How long does the job take?
It depends on the size of the job, but as a guide it takes a few hours for most snagging lists, longer for a run of plots. We will tell you when we quote.
I rent my home. Can I book you?
Yes, but check with your landlord or agent first. Many landlords are glad to have it sorted.
Do you hold any approvals?
Yes. We hold ARBOMaster approved applicator status and we’re fully insured too.
Is it worth resealing while the house is still settling?
It depends on whether water is getting through. A leaking shower or bath seal should be redone straight away, but cosmetic gaps can wait for movement to slow.
New build mastic around Selham
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For jobs in and around Selham, choosing the right material for each joint is as important as a tidy finish.
Selham is about 8 miles south of Haslemere, in West Sussex. Our applicators cover new build mastic for homes and businesses in Selham. Our area takes in 371 places across West Sussex, from the larger towns to small villages. You can also see our page for Portsmouth, roughly 21 miles from Selham.
Here we cover the GU28 postcode area for new build mastic. If you are just outside Selham, we cover South Ambersham (1 mile west), River (2 miles north), Tillington (2 miles north-east), Upperton (2 miles north-east) and Rotherbridge (2 miles east). We also work in nearby towns such as Bognor Regis (13 miles south), Chichester (11 miles south-west), Littlehampton (13 miles south-east), Emsworth (14 miles south-west), Rustington (14 miles south-east) and Storrington (11 miles east).
Near you in Selham
Nearby you’ll also find Midhurst Community Hospital (2.9 miles west) and Coultershaw Heritage Site (2.5 miles east). The countryside around Selham includes Graffham Common.
Towns and villages near Selham
What else we do in Selham
What sealant work cannot fix
In fairness, some problems need a different trade:
- Broken tiles or a split tray
- Your warranty claim itself, which is between you and the builder
- Plumbing faults behind the sealant
If in doubt, phone 0345 464 0079 or email us and we’ll say what we think.
Where we work in Selham
- Show homes
- Windows & doors
- Kitchens
- Skirting & floors
- Plot handovers
- Bathrooms & en suites
How to look after the new joints
Once the sealant has cured, a few habits help it last:
- Raise failed sealant with the developer while you are covered
- Wait for the cure time before using a resealed shower
- Do not wait for the house to settle if water is getting through
- Ventilate bathrooms well, especially in the first year
Keep an eye on the joints over the first couple of years. Hairline gaps can open as timber and plaster dry and can be resealed later.
Early snagging is easier snagging. Small faults turn into leaks if left over time.
Landlord and commercial work in Selham
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
If you manage several properties in or around Selham, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs, and pictures by email help.
What affects the cost of new build mastic
We quote each job individually. This is what makes a difference:
- Whether the work is at height
- The size of the job
- Any mould that needs treating
- The number of rooms or windows
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed. Call for a quick quote and we’ll go through it with you.
What we need to know
To help us quote quickly, let us know:
- The type of property
- How we’d reach the joints
- Roughly how big the job is
- Pictures of the joints, sent by email
If you are in Selham and need new build mastic, call 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Common problems we fix in Selham
Baths and trays settle under load once the home is lived in. If a bath wasn’t filled when it was sealed, the bead is stretched the first time it’s used and the sealant may split.
It’s worth asking for a quote if you see:
- Cracked caulk along new skirting
- Sealant that never bonded to the surface
- Joints pulling apart as timber shrinks
- Smeared, uneven beads picked up at snagging
In and around Selham, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
What to look for in a quote
- What the quote includes, VAT included or not
- The length of the guarantee
- Whether the sealant suits the joint
- How hidden problems are handled