West Sussex · England
New-build mastic & snagging in Steyning, West Sussex
We cover Steyning for plot mastic for developers and snagging failed sealant in new homes. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Skirting joints opening in the first winter
- Sealant work across a run of new homes
- Untidy sealant flagged on a snagging list
New build mastic in Steyning
Developers send us the plot schedule and we work through it. We seal bathrooms, kitchens, windows, doors and skirting so plots are ready to hand over using the right product for each joint. We work on windows & doors, show homes and kitchens, and the jobs we see most are cracked sealant around new window and door frames and gaps between new skirting and floors.
In and around Steyning, floors range from older timber boards to tiles and newer finishes, each moving in its own way. The sealant at skirtings and thresholds has to suit the floor it meets.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we will sort it.
- Location
- Steyning (BN44)
- Region
- West Sussex
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
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. Most jobs then take a few hours for most snagging lists, longer for a run of plots. For a job in Steyning, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- 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.
- We clean off dust from the build and prime the surfaces where the product needs it.
- New sealant suited to each joint is applied and tooled neatly.
- Each area is checked and left with its cure time.
Getting ready for the visit
- Mention any tricky access
- Try not to wet indoor joints just before the visit
- Let us know about parking restrictions
Ask for a quote
If you are in Steyning and need new build mastic, call 0345 464 0079 or email us. Tell us what the problem is and where, and you’ll get a clear quote before work begins.
Advice
Surface by surface
Plot handovers
Developers can send the plot schedule and specification. We seal bathrooms, kitchens, frames and floors as agreed.
Bathrooms and en suites
En suite showers are a common source of leaks into the room below. A proper reseal keeps water in the tray.
Nearby places to Steyning
More services for Steyning
New homes and floors in Steyning
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you’ve bought a new home near Lancing station, the sealant around baths, showers and frames is worth checking in the first year or two.
Steyning is about 4 miles north-west of Shoreham-by-Sea, in West Sussex. Across the BN44 area, our applicators can take on new build mastic. Our West Sussex coverage runs to 371 places, Steyning among them. There’s also a page for Brighton, roughly 9 miles from Steyning.
Jobs for new build mastic in BN44 works the same way as everywhere else we cover. You will find streets such as High Street, Market Field and Dog Lane, all of which we cover. Neighbouring places we cover for new build mastic include Bramber (1 mile east), Botolphs (1 mile south-east), Upper Beeding (1 mile east), Sompting (4 miles south) and Findon Valley (4 miles south-west). Larger places within reach include Horsham (12 miles north), Worthing (5 miles south-west), Haywards Heath (13 miles north-east), Burgess Hill (10 miles north-east), Littlehampton (10 miles south-west) and Shoreham-by-Sea (4 miles south-east).
Around Steyning
Locally, jobs take us to homes and businesses close to The Model Bakery The Norfolk Arms and Steyning Grammar School, among other places. The closest station to Steyning is Lancing station, about 4.1 miles south. Other landmarks nearby include Steyning Museum (under half a mile north) and Southlands Hospital (4.4 miles south-east). Open spaces near Steyning include Woods Mill and Chanctonbury Hill.
What affects the cost of new build mastic
Every job gets its own quote. This is what makes a difference:
- How much old sealant there is and how hard it is to remove
- Working hours on commercial sites
- How many rooms, windows or areas are involved
- The size of the job
Homes and businesses are quoted the same way: the amount of work, the access and the products needed. Call for a quick quote and we will explain what it covers.
Asking for a quote
When you call or email, it’s useful to know:
- The address or postcode of the job
- The problem you’ve noticed
- The type of property
- Any previous sealing or DIY work
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we’ll explain how we’d tackle it. Whenever you are ready, call 0345 464 0079 or drop us an email.
Why deal with it now?
A quick bead over the top of the old sealant can look fine at first, but it cannot bond to what’s underneath. A lasting seal starts with removing the old one completely. In a smaller place like Steyning, wherever a wall is exposed, a failed outside joint is a real source of damp. Inside, a split seal lets water into floors and panels just as it would anywhere.
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.
Why Steyning customers choose us
- Fully insured
- Tidy, careful work
- A choice of colours where the product allows
- Every job guaranteed for a year
See what affects the cost and our reviews.
Should I try it myself first?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
When something else is needed
Some problems need a builder, plumber or other trade rather than us:
- Your warranty claim itself, which is between you and the builder
- Settlement cracks that need a surveyor
- Broken tiles or a split tray
If in doubt, call 0345 464 0079 or email us and we will say what we think.
Joints and surfaces we work on
- Skirting & floors
- Windows & doors
- Kitchens
- Show homes
- Plot handovers
- Bathrooms & en suites
Your questions about new build mastic in Steyning
Do you work for landlords with property near Lancing station?
Yes. We work for landlords and letting agents as well as homeowners, and several properties can go on one quote. You can call 0345 464 0079 or email us with the details for a clear quote.
Is Steyning in your area for new build mastic?
Yes. We work across London and the South East, and Steyning is part of that. You can ring 0345 464 0079 or send us an email and let us know what needs doing, and we will give you a clear price.
Will there be a smell?
Sometimes, a little. It fades as the sealant cures.
Can you work from my snagging list?
Yes. Send the list and a few pictures of the sealant items and we’ll give you a quote. We’ll tell you if anything on it isn’t a sealant job.
How long does new build mastic take?
As a guide, most jobs take anything from a few hours to several days, depending on the number of plots. Bigger jobs take longer, and we’ll tell you how long to expect.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done and you’ll get one quote.
Is it worth trying it myself?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.
When is the best time to reseal in a new build?
If the seal has failed and water is getting in, do it now. Small gaps that are just cosmetic can be resealed once movement has slowed.
What we are called out for in Steyning
The wrong product is sometimes used in the wrong place: caulk where water collects, or a rigid product on a moving joint. Neither lasts long.
Most people get in touch after spotting something like this:
- Cracked caulk along new skirting
- Sealant work across a run of new homes
- Cracks appearing as a new home settles
- Smeared, uneven beads picked up at snagging
In and around Steyning, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Before you book anyone
- Whether all the old sealant comes out first
- What the quote includes, VAT included or not
- Whether the sealant suits the joint
- What preparation is included