West Sussex · England
New Build Mastic in Flansham
Plot mastic for developers and snagging failed sealant in new homes in Flansham, with a one-year guarantee on every job. Ask us for a quote.
- Gaps between new skirting and floors
- Joints pulling apart as timber shrinks
- Leaking shower tray seals in a new home
What new build mastic looks like in Flansham
Flansham is close to the coast. Plot mastic on new homes near the coast takes more weather than it would inland, so any gaps are best picked up early. Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
In and around Flansham, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Flansham is about 2 miles north-east of Bognor Regis, in West Sussex. Wherever you are in the PO22 postcode area, we can carry out new build mastic at your property. Across West Sussex, we cover 371 places, Flansham among them. You can also see our page for Portsmouth, roughly 19 miles from Flansham.
Work in PO22 is quoted and booked the same way as anywhere else. If you are just outside Flansham, we cover Bilsham (1 mile east), Lidsey (2 miles north-west), Shripney (2 miles west), Yapton (2 miles north-east) and Barnham (2 miles north). Within a short drive, we also cover Worthing (11 miles east), Chichester (7 miles west), Selsey (8 miles south-west), Littlehampton (5 miles east), Lancing (14 miles east) and Emsworth (13 miles west).
Local landmarks in Flansham
Locally, jobs take us to homes and businesses close to Felpham Community College and The Brooks Local Nature Reserve. The nearest railway station is Barnham station, about 1.9 miles north of the centre. A little further out are Tote Copse Castle (3.1 miles north-west) and Bognor Regis Museum (2.3 miles south-west).
New build mastic in Flansham
We never seal over a failed new-build bead. Fresh silicone cannot bond to the old layer, so it all comes out before we clean, dry and reseal. We work on kitchens, plot handovers and windows & doors, and the jobs we see most are worktop and upstand sealant coming away and plot mastic for developers ahead of handover.
Somewhere as small as Flansham, 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.
You are covered for a year from the day we finish. If there’s a problem with it, please phone 0345 464 0079 or send us an email.
- Location
- Flansham (PO22)
- Region
- West Sussex
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
DIY versus a professional finish
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
If you are 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 doesn’t work out, we can still put it right.
What affects the cost of new build mastic
Jobs vary more than people expect. The main factors:
- How many rooms, windows or areas are involved
- Whether old sealant or filler has to be cut out
- The number and length of the joints
- The product the joint needs
Combining jobs into one visit is usually more efficient than separate visits. We will give you a clear quote for the lot.
Asking for a quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Whether it has been sealed before
- What’s wrong with the joints now
- Roughly how big the job is
- Access, such as stairs, a lift or height
Getting a quote is simple: let us know what needs doing and where. Photos by email help us understand the job.
Places near Flansham
Also in Flansham
Surface by surface
Kitchens
As a new house dries, worktops and walls shift a little, which opens gaps along the back. We reseal them with a flexible sealant.
Plot handovers
Developers can send the plot schedule and specification and we’ll quote. We seal bathrooms, kitchens, frames and floors as agreed.
Common questions in Flansham
Can you do new build mastic in Flansham?
Yes, Flansham is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or email us and let us know what needs doing, and we will give you a clear quote.
Can you help a landlord with a rental near Barnham station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. Just phone 0345 464 0079 or send us an email with the address and what needs doing, and we will send you a clear quote.
Will there be a smell?
Some sealants have a smell while they cure, which fades as it sets. Opening a window helps.
Does someone need to be in?
We need access to the joints, so we’ll agree that with you when we book. For inside work, that normally means someone being in.
Who should fix failed sealant in a new build?
Report it to the builder first while you are covered. Once that’s done, or if they will not put it right, we’ll cut it out and reseal it.
Do you work through snagging lists?
Yes. Send us the sealant items on the list, with photos if you can. We’ll tell you if anything on it isn’t a sealant job.
Is there a guarantee?
Yes. There’s a 12-month guarantee on every job, wherever you are.
What do you put in the joint?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We’ll tell you what we’re using and why.
Do you need new build mastic in Flansham?
If plaster or screed was still damp when it was sealed, the bond suffers. Site programmes do not always leave time for joints to dry first.
People usually contact us when they notice one of these:
- Shower seals failing in the first year or two
- Worktop and upstand sealant coming away
- Messy sealant that spoils new finishes
- Second-fix sealing on new plots
For new homes near Barnham station, it’s worth checking the sealant early, while snags are still fresh.
Comparing quotes
- How long to leave it before use
- Which colour the sealant will be
- What happens if the job turns out different
- Which sealant they’ll use, and why
How it works
When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. Most jobs then take a few hours in a single home. In a small place like Flansham, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We go through the snagging list or plot schedule and agree the joints to do.
- We cut out every bit of the failed or messy sealant.
- Each joint is cleaned of dust and grit, then primed if required.
- A sealant chosen for each area goes in and is tooled smooth.
- Finally, each room is checked and you’re given the cure time.
Preparing for the visit
- Mention any sign-in or site rules at work premises
- Clear items away from the joints we are working on
- Plan for the work area to be out of bounds to pets and children
How to get a quote
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll talk you through the work.
Advice
Leave it or put it right?
Sealant done properly at handover means fewer callbacks. Snagging visits for failed sealant cost time on every plot. Older cottages and farmhouses around Flansham can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
There are no prices on our website, because the cost depends so much on the job itself. Call for a quick quote.
What you get with us
- More than 20 years in sealant work
- Approved under the ARBOMaster scheme
- Colour agreed with you before we start
- Sealant colour chosen to suit
Read what affects the cost and customer reviews.
Work for landlords, hotels and businesses
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. We can quote for more than one property at once.