West Sussex · England
New-build mastic & snagging in North Mundham, West Sussex
New-build sealant joints in North Mundham need attention? We cut out the old, prepare the joints and apply the right sealant.
- Smeared, uneven beads picked up at snagging
- Internal frame sealant that has split
- Shower seals failing in the first year or two
About our new build mastic in North Mundham
We work in new homes and on new-build sites across North Mundham. One shower or a whole phase of plots, the method does not change: cut out, clean, prime where needed and reseal neatly. We’re often asked to deal with messy sealant that spoils new finishes and cracks appearing as a new home settles, across plot handovers, skirting & floors and bathrooms & en suites.
For a small place like North Mundham, the journey and access are planned in advance, and the work itself is the same as on any site.
Every job comes with our one-year guarantee.
- Where
- North Mundham (PO20)
- Region
- West Sussex
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. Our tips:
- Check bath and shower seals every few months as the house settles
- Raise failed sealant with the developer while you are covered
- Avoid scourers and strong chemicals on sealant
- Don’t seal over failed sealant yourself
Don’t stand on the bath edge or the lip of the tray while the sealant cures. Report any movement in a bath or tray.
A failed seal in a new home lets water into joists, plasterboard and ceilings. Early resealing keeps the job small and the new finishes intact.
Towns and villages near North Mundham
Other services in North Mundham
Surface by surface
Bathrooms and en suites
Baths, showers, basins and trays in new bathrooms are the most common new-build reseal. We cut out the failed bead, clean and prime, and reseal with anti-fungal sanitary silicone.
Kitchens
Worktop, upstand and sink joints in new kitchens often get a hurried bead. We remove it and reseal with a kitchen-suitable sealant.
What we are called out for in North Mundham
When the heating goes on in the first winter, the house dries fast. Skirting, frames and worktops pull away slightly and cracks appear in the sealant.
The problems people generally mention when they call include:
- Messy sealant that spoils new finishes
- New-build shower sealant that has already split
- Gaps between new skirting and floors
- Beads laid onto grit and dust from the build
Around North Mundham, as everywhere, new build mastic is only as good as the preparation behind it.
What to look for in a quote
- What preparation is included
- What the cure time is
- Whether you can choose the colour
- Are they insured?
For landlords and businesses
We work for landlords and letting agents as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order.
If you manage several properties in or around North Mundham, several properties can be quoted together. Send us the addresses and the work at each.
How we quote for new build mastic
Every job gets its own quote. These are the things that affect it:
- The number of rooms or windows
- Whether there’s mould to deal with
- The number and length of the joints
- The old material and how stubborn it is
What it costs depends on the size of the job, how hard the old material is to remove and access to the work. We give a clear quote before work begins.
What to tell us for a quote
There’s no need for technical detail. It helps if you can tell us:
- Any previous sealing or DIY work
- What’s wrong with the joints now
- Where the property is
- Pictures of the joints, sent by email
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email photos if that is easy.
Joints and finishes in North Mundham homes
North Mundham 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. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For new homes near Chichester station, it’s worth checking the sealant early, while snags are still fresh.
North Mundham is about 2 miles south-east of Chichester, in West Sussex. If you need new build mastic in North Mundham, please ring 0345 464 0079 or send us an email for a quick quote. We cover West Sussex from our Crawley base. North Mundham is one of 371 towns and villages in West Sussex we cover. We also work in Portsmouth, about 14 miles from North Mundham.
We cover every part of PO20 for new build mastic and the streets around it. That includes homes and businesses on Church Road, Fletcher Place and Palmer Place. Close by, we work in Runcton (1 mile east), Hunston (1 mile west), Merston (1 mile east), Donnington (1 mile west) and Lagness (2 miles south-east). Larger places within reach include Bognor Regis (4 miles south-east), Selsey (6 miles south), Littlehampton (10 miles east), Emsworth (8 miles west), Rustington (11 miles east) and Storrington (15 miles north-east).
Local landmarks in North Mundham
Locally, jobs take us to homes and businesses close to The Spotted Cow Public House and Chichester High School For Girls. The closest station to North Mundham is Chichester station, roughly 1.6 miles north-west. Other landmarks nearby include St Richard's Hospital (2.1 miles north) and Chichester Cathedral Treasury (1.8 miles north-west).
How the visit works
When we get to you, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. After that, the work takes a few hours in a single home. Somewhere like North Mundham needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- 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.
- Surfaces are cleaned of building dust and primed where needed.
- New sealant suited to each joint is applied and tooled neatly.
- We check every joint and tell you how long each needs to cure.
Getting ready for the visit
- Mention if the joints have been sealed before
- Keep children and pets away from the work area
- Move anything stored near the joints
How to get a quote
There’s no standard price list. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or drop us an email.
Related advice
Can I do it myself?
If you’ve already had a go yourself, that is fine. We cut it out and start again.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
North Mundham: your questions answered
Is North Mundham in your area for new build mastic?
Yes. We work across London and the South East, and North Mundham is part of that. You can phone 0345 464 0079 or email us and tell us what needs doing.
I let a flat near Chichester station. Can you help?
Yes, rental work is part of what we do. Just call 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear quote.
Can you match the sealant colour to my new kitchen or bathroom?
It depends on the joint: white or clear in most bathrooms, and a colour to suit worktops, frames and floors elsewhere. We agree the colour before we start.
How much does new build mastic cost in North Mundham?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
How long does the job take?
As a guide, most jobs take a few hours in a single home. Bigger jobs take longer, and we will say how long yours will take.
Should I wait before resealing?
For failed seals that let water through, the best time is now. Cosmetic gaps can wait until the first year or two of movement has passed.
Do you have insurance?
Yes. We’re fully insured for domestic and commercial work.
Is there a guarantee?
Yes. There’s a 12-month guarantee on every job.