West Sussex · England
New-build mastic & snagging in Castle Town, West Sussex
New build mastic for Castle Town and the surrounding area: careful preparation, the right product and tidy work. Call for a quick quote.
- Sealant work across a run of new homes
- Gaps behind new kitchen upstands
- Cracked sealant around new window and door frames
New build mastic for homes and businesses in Castle Town
If your new home has a leaking shower seal, open skirting joints or untidy sealant, we can help. While the builder’s snagging or warranty period runs, report it to them first, and if it is not put right, get in touch with us. We are often asked to deal with skirting joints opening in the first winter and new-build shower sealant that has already split, across plot handovers, show homes and kitchens.
For a small place like Castle Town, the journey and access are planned in advance, and once on site, the job is the same as anywhere.
Each job carries a 12-month guarantee, whatever its size.
- Location
- Castle Town (BN44)
- Wider area
- West Sussex
- Cover
- A year, on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Why act early in Castle Town
A failed shower or bath seal in a new home lets water into floors and walls that are still drying out. Dealing with it early keeps the damage away from ceilings, floors and finishes. Around Castle Town, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
We don’t show prices on the website, because the cost depends so much on the job itself. Call for a quick quote and we will talk you through it.
Why book with us
- ARBOMaster approved applicator
- Over 20 years’ experience
- You choose the colour before work begins
- Arbo and Everbuild products
Read what affects the cost or our reviews.
How it works
You do not need to clear the whole room or building before we come, just the space around the work. We protect the rest, and the job takes a few hours for most snagging lists, longer for a run of plots in most cases. For a village or hamlet like Castle Town, 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 start by going through the snagging items or plot schedule with you.
- The failed sealant is removed completely, with no layer left behind.
- Joints are vacuumed and cleaned of building dust.
- Primer goes on where the surface and product need it, then the new sealant.
- Each bead is tooled and the cure times explained.
Getting ready for the visit
- Mention any parking rules near the property
- Plan for the work area to be out of bounds to pets and children
- Let us know about earlier repairs to the joints
Getting a quote
Every job is quoted individually, so start by telling us what you need. Just call 0345 464 0079 or send us an email with the details and send photos if you have them.
Read more
New build mastic around Castle Town
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 Shoreham-By-Sea station, it’s worth checking the sealant early, while snags are still fresh. In and around Castle Town, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Castle Town is about 3 miles north of Shoreham-by-Sea, in West Sussex. We carry out new build mastic for homeowners, landlords and businesses in Castle Town and the surrounding area. Castle Town is one of 371 towns and villages in West Sussex we cover for new build mastic. There’s also a page for Brighton, about 8 miles away.
Every address in BN44 is within our area for new build mastic, from the main roads to the quietest streets. Local streets include Henfield Road, The Bostal and Shoreham Road. Neighbouring places we cover for new build mastic include Adur (2 miles south), Old Shoreham (3 miles south), Shoreham-by-Sea (3 miles south), Fulking (3 miles east) and Kingston by Sea (4 miles south-east). Larger places within reach include Horsham (13 miles north), Worthing (6 miles south-west), Haywards Heath (12 miles north-east), Burgess Hill (9 miles north-east), Littlehampton (11 miles south-west) and Lancing (4 miles south).
Near you in Castle Town
Locally, jobs take us to homes and businesses close to Steyning Grammar School and Hillside Park (parke sa Hiniusang Gingharian), among other places. The nearest railway station is Shoreham-By-Sea station, roughly 3.2 miles south. Well-known places in the area include Southlands Hospital (3.1 miles south-east) and Steyning Museum (1.5 miles north-west). Green spaces nearby include Mill Hill and Truleigh Hill.
When it isn’t the sealant
Some problems need a builder, plumber or other trade rather than us:
- Movement caused by a poorly fitted tray or bath
- Structural cracks in walls or ceilings
- Damaged fittings that need replacing
If you’re not sure, just call 0345 464 0079 or email us and we’ll give you a straight answer.
What we seal
- Skirting & floors
- Windows & doors
- Bathrooms & en suites
- Plot handovers
- Kitchens
- Show homes
Aftercare tips
Good habits help new joints last longer. A few tips:
- Put sealant faults on your snagging list early
- Use the extractor fan every time you shower
- Clean sealant with mild detergent, not abrasives
- Record problems with dated photos
Ventilation matters in a new home, which is still drying out. Run the fan or open a window after bathing to help keep mould away.
A failed seal in a new home lets water into joists, plasterboard and ceilings. Early resealing keeps the job small and protects the rest of the house.
How the job changes by surface
Kitchens
New-kitchen sealant is often applied in a rush. We remove it and reseal with a kitchen-suitable sealant.
Skirting and floors
Gaps under skirting are one of the most common new-build snags. A flexible sealant closes it without cracking like caulk.
What affects the quote in Castle Town
Call for a quick quote. What matters most is:
- Any working-time requirements on site
- Which sealant suits the joint
- Whether there’s mould to deal with
- The old material and how stubborn it is
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether the work is at height. Your quote takes all of that into account.
Helping us quote
To help us quote quickly, let us know:
- Where the job is, and your postcode
- Whether it has been sealed before
- What the problem is, such as mould, gaps, leaks or cracking
- How we’d reach the joints
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.
Castle Town: your questions answered
Will you come out to Castle Town?
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.
Can you help a landlord with a rental near Shoreham-By-Sea station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can phone 0345 464 0079 or email us with the details for a clear quote.
Can you reseal over the builder’s sealant?
No. We always remove the existing bead, then clean and prime the joint, and a new bead applied.
My new home is still under warranty. Should I contact you?
Start with the builder if you are in the snagging or warranty period. Once that is done, or if they won’t put it right, we can reseal it properly.
Do you work through snagging lists?
Yes. Snagging lists are a common starting point for us. We agree the sealant items with you before we start.
Do you do commercial work?
Yes, regularly. We can plan bigger jobs in stages to suit the site.
Should I wait before resealing?
Where water is getting through, do not wait. Small gaps that are just cosmetic can be resealed once movement has slowed.
Which products do you use?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Nearby places to Castle Town
What else we do in Castle Town
Work for landlords, hotels and businesses
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.