West Sussex · England
New Build Mastic in Bosham
Specialist new build mastic for Bosham: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Worktop and upstand sealant coming away
- Cracked sealant around new window and door frames
- Leaking shower tray seals in a new home
New homes and floors in Bosham
Bosham 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. Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For new homes near Bosham station, it’s worth checking the sealant early, while snags are still fresh.
Bosham is about 3 miles west of Chichester, in West Sussex. Homes, rented property, offices and hotels in Bosham can book us for new build mastic, old or new, large or small. The work is guaranteed for a year. Bosham is one of 371 towns and villages in West Sussex we cover for new build mastic. You can also see our page for Portsmouth, about 10 miles away.
All of PO18 is within our area for new build mastic, from the main roads to the quietest streets. If you need new build mastic at a property on High Street, Viking Way and Merryweather Road or a nearby road, our applicators can take on the job. We also cover the places around Bosham: Broadbridge (1 mile north-east), Chidham (1 mile west), Bosham Hoe (1 mile south), Nutbourne (2 miles north-west) and Fishbourne (2 miles east). Further out, we also cover Bognor Regis (8 miles east), Chichester (3 miles east), Selsey (7 miles south-east), Littlehampton (14 miles east), Emsworth (4 miles west) and Rustington (15 miles east).
Local landmarks in Bosham
Locally, jobs take us to homes and businesses close to The Berkeley Arms Public House and the streets around them. For rail, the closest station is Bosham station, roughly 0.8 miles north-east. A little further out are Chichester Cathedral Treasury (3.2 miles east) and St Richard's Hospital (3.8 miles east). Open spaces near Bosham include Nutborne Marshes and Stoke Down.
How we handle new build mastic in Bosham
We work in new homes and on new-build sites across Bosham. One shower or a whole phase of plots, the method does not change: remove, clean, prime where needed, then a neat new bead. We work on plot handovers, show homes and kitchens, and common reasons people get in touch are sealant that never bonded to the surface and plot mastic for developers ahead of handover.
Work in a small place like Bosham just needs the journey and access planning, and once on site, the job is the same as anywhere.
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
- Bosham (PO18)
- Region
- West Sussex
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
What affects the quote in Bosham
Every job gets its own quote. These are the things that affect it:
- How much old sealant there is and how hard it is to remove
- The size of the job
- Working hours on commercial sites
- The product the joint needs
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you’re not sure whether it needs doing, phone 0345 464 0079 or email us for an honest opinion and a quote.
What we need to know
When you call or email, it’s useful to know:
- If someone has resealed it before
- Any access issues, like height or stairs
- What the problem is, such as mould, gaps, leaks or cracking
- How many joints, rooms or windows are involved
It all starts with a short chat. 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, phone 0345 464 0079 or email us.
What we do, step by step
There isn’t much for you to do on the day. Show us the job and we will take it from there. The job generally takes anything from a few hours to several days, depending on the number of plots from start to finish. For a village or hamlet like Bosham, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- Each joint is checked for movement before any work starts.
- Old sealant is cut out and the joints cleaned.
- Joints are dried and primed where the product calls for it.
- Baths are filled with water, then the new sealant is applied.
- The finished joints are checked and the cure times given.
Getting ready for the visit
- Let us know if you’ve seen damp or leaks
- Clear the area around the work
- Tell us if parking is tricky
Get a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.
Advice
More services for Bosham
What we cannot put right
Before you book, it’s worth knowing the limits too:
- Cracked trays, tiles or worktops
- Plumbing faults behind the sealant
- Disputes or warranty claims with your builder
Not sure which it is? You can call 0345 464 0079 or drop us an email and we will tell you honestly.
Joints and surfaces we work on
- Plot handovers
- Windows & doors
- Kitchens
- Show homes
- Bathrooms & en suites
- Skirting & floors
How to look after the new joints
To keep the joints looking good and working properly:
- Use the extractor fan every time you shower
- Get a leaking seal dealt with straight away
- Avoid scourers and strong chemicals on sealant
- Record problems with dated photos
Keep the bathroom ventilated, especially in the first year. Run the fan or open a window after bathing to help keep mould away.
Mould takes hold quickly in sealant that has gaps or lifted edges. Dealing with it before it goes black saves a harder job later.
Why it’s worth doing now in Bosham
Resealing everything on a snagging list in one visit is normally simpler than chasing joints one at a time. You get one visit and one clear quote for the lot. Older cottages and farmhouses around Bosham can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs. Call for a quick quote and we’ll go through it with you.
Why choose Mr Mastic in Bosham
- Colour agreed with you before we start
- We are fully insured
- White, clear, grey or coloured to suit, where the product allows
- 180+ five-star Google reviews
Read our cost guide and customer reviews.
Signs you need new build mastic in Bosham
The wrong product is sometimes used in the wrong place: decorators’ caulk in a wet area, or a stiff sealant where there’s movement. Both fail early.
Signs it’s time to call us include:
- Second-fix sealing on new plots
- Beads laid onto grit and dust from the build
- Kitchen sealant that has pulled off the wall
- Internal frame sealant that has split
In and around Bosham, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Questions to ask before booking
- Whether VAT is included
- Which sealant they’ll use, and why
- How long the guarantee is
- What happens if the job turns out different
Landlord and commercial work in Bosham
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
We work for letting agents and landlords as well as householders. Sealant work between tenants is a simple way to keep a property in good order.
Common questions in Bosham
Do you cover Bosham for new build mastic?
Yes. Our work covers London and the South East, and Bosham is part of that. You can call 0345 464 0079 or send us an email and let us know what needs doing, and we will give you a clear price.
Do you cover smaller places like Bosham?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Should I try DIY first?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.
Why has my new-build shower seal failed already?
A new house dries and settles for a year or two, and sealant is often applied quickly onto dusty surfaces. Either can make it fail early.
Are you an approved applicator?
Yes. We hold ARBOMaster approved applicator status.
I’m a tenant. Can you help?
Of course. Check with your landlord; we can send the quote to them too.
How do I get a quote for new build mastic in Bosham?
It depends on the job, so we quote each one individually. To get one, ring 0345 464 0079 or email us and let us know what needs doing and where.
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.