West Sussex · England
New Build Mastic in Lancing
New build mastic in Lancing from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Leaking shower tray seals in a new home
- Skirting joints opening in the first winter
- Frame joints opening as the plaster dries
How we handle new build mastic in Lancing
Dust is the enemy of new-build sealant. We clean every joint thoroughly and prime where the surface and product need it, so the new bead bonds properly rather than sitting on a layer of grit. We work on windows & doors, kitchens and plot handovers, and people most often call us about gaps opening as the house dries out and settles and new-build shower sealant that has already split.
Where new homes go up in smaller places like Lancing, it’s often a small development or a single plot. Each still needs its sealant and floor joints finished properly from day one.
Big or small, you get the same 12-month guarantee in Lancing and across West Sussex.
- Where
- Lancing (BN15)
- Region
- West Sussex
- Cover
- One year on every job
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
The process
All our tools and materials come with us in the van, so there’s nothing for you to buy. Once we have agreed what’s being done, the area is protected and the work begins. Most jobs take anything from a few hours to several days, depending on the number of plots. In a smaller place like Lancing, parking is seldom the issue; lanes, gates and long drives are worth mentioning. For outside work, side access and the height of the joints help us plan.
- We start by agreeing which joints are on the list, from the snagging sheet or plot schedule.
- We cut out every bit of the failed or messy sealant.
- Surfaces are cleaned of building dust and primed where needed.
- We apply a sealant that suits each joint and tool it to a neat finish.
- Finally, each room is checked and you’re given the cure time.
Getting ready for the visit
- For indoor joints, keep the area dry beforehand if you can
- Mention any parking rules near the property
- Clear items away from the joints we are working on
Getting 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 explain what’s involved.
Related advice
Aftercare tips
Simple care keeps the joints in good condition. Our advice:
- Use the extractor fan every time you shower
- Raise failed sealant with the developer while you’re covered
- Check bath and shower seals every few months as the house settles
- Keep photos and emails about snagging items
Follow the cure time we give you before the area gets wet. Silicone is generally left for about a day to cure enough for use.
Leave a failed new-build seal and water can reach the floor and the ceiling below. Early resealing keeps the job small and protects the rest of the house.
What new build mastic looks like in Lancing
Lancing is within about 1 mile of the coast. Plot mastic on new homes near the coast takes more weather than it would inland, so it’s worth checking at snagging. 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.
Around Lancing, as everywhere, new build mastic is only as good as the preparation behind it. For new homes near Lancing station, it’s worth checking the sealant early, while snags are still fresh.
Lancing is about 3 miles east of Worthing, in West Sussex. Lancing gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. Lancing is one of 371 places in West Sussex we cover for new build mastic. For nearby work, see our Brighton page (8 miles or so).
Our applicators cover all of BN15 for new build mastic and the streets around it. We cover properties on North Road, North Farm Road and Addison Close. Lancing sits on or near the A2025, which makes travel easy. Close by, we work in Sompting (1 mile west), East Worthing (2 miles south-west), Broadwater (2 miles west), Offington (3 miles west) and Botolphs (3 miles north). Larger places within reach include Worthing (3 miles west), Haywards Heath (15 miles north-east), Burgess Hill (12 miles north-east), Littlehampton (9 miles west), Rustington (8 miles west) and Storrington (8 miles north-west).
Around Lancing
We work in homes and buildings around Brooklands Park, Sompting Abbotts Preparatory School and The Railway pub. There’s a railway station in Lancing itself: Lancing station. Nearby you will also find Worthing Hospital (2 miles south-west) and Old Castle (3.1 miles west). Open spaces near Lancing include Lancing Ring and Widewater Lagoon.
Landlords, agents and businesses in Lancing
Housing providers, facilities teams and property managers book us too. Several sites can go on one quote, and we’re fully insured for the work.
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we’ll quote.
When something else is needed
Sealant isn’t the answer to every problem, and we’d rather say so up front. Sealant won’t put right:
- Cracking that points to a structural problem
- Damaged fittings that need replacing
- Disputes or warranty claims with your builder
If in doubt, call 0345 464 0079 or send us an email and we will say what we think before you book.
Surfaces we seal
- Skirting & floors
- Kitchens
- Plot handovers
- Show homes
- Bathrooms & en suites
- Windows & doors
What affects the cost of new build mastic
We quote each job individually. This is what makes a difference:
- How many rooms, windows or areas are involved
- Working hours on commercial sites
- Access and height
- Whether old sealant or filler has to be cut out
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Helping us quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- Pictures of the joints, sent by email
- The problem you’ve noticed
- If someone has resealed it before
- If it’s domestic, commercial or a hotel
For a quote, phone 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You will have a clear quote before work begins.
DIY sealant or a professional job?
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
If you’ve already had a go yourself, that’s fine. We cut it out and start again, so tell us about it when you ask for a quote.
Why deal with it now?
DIY kits don’t solve the main problems with new-build sealant: grit, unprimed surfaces and old layers underneath. Cutting out, cleaning and priming are what make the difference. Homes in smaller places like Lancing can face more weather, and failed outside joints let damp into walls. Inside, a split seal lets water into floors and panels just as it would anywhere.
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you’re unsure, phone 0345 464 0079 or email us for an honest opinion and a quote.
Why book with us
- A 12-month guarantee on all work
- Full insurance on every job
- Rated 4.9 stars on Google
- Anti-fungal sanitary silicone in wet areas
Take a look at how sealant jobs are priced or our reviews.
Also near Lancing
Other services in Lancing
Lancing: your questions answered
Is Lancing in your area for new build mastic?
Yes, Lancing is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or email us and tell us what needs doing.
Do you work for landlords with property near Lancing station?
Yes. We work for letting agents and landlords as well as householders, and several properties can go on one quote. Just phone 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear quote.
Who should fix failed sealant in a new build?
Your builder, if you’re still in their snagging or warranty period. If that does not work out, we’re happy to quote.
How long does new build mastic take?
It depends on the size of the job, but most jobs take a few hours in a single home. We’ll tell you when we quote.
Will you leave a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
How long should I leave it?
Cure times vary by product and the temperature. Before we leave, we will tell you the cure time.
Will there be a smell?
Sometimes, a little. Any smell clears as the sealant cures.
Do I need to be at home?
It depends on the job. For work indoors, someone needs to let us in, and for outside work we’ll agree access with you when we book.