West Sussex · England
New Build Mastic in Adversane
New build mastic in Adversane from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- New-build shower sealant that has already split
- Second-fix sealing on new plots
- Messy sealant that spoils new finishes
New build mastic in Adversane, done properly
Across Adversane, we work for both new-home owners and the builders handing those homes over. One shower or a whole phase of plots, the method doesn’t change: cut out, clean, prime where needed and reseal neatly. Common call-outs are for shower seals failing in the first year or two and smeared, uneven beads picked up at snagging, across skirting & floors, windows & doors and bathrooms & en suites.
Around Adversane, older homes often have timber floors that move through the year, which is why skirting and threshold joints need a flexible sealant, not filler.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we will put it right.
- Where
- Adversane (RH14)
- Region
- West Sussex
- Guarantee
- 12 months on all our work
- Price
- A clear price before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Different surfaces, different methods
Show homes
We seal show-home bathrooms, kitchens and frames. We will plan around viewing times.
Bathrooms and en suites
New-build bathrooms and en suites are where sealant fails most often. The old sealant comes out and anti-fungal sanitary silicone goes in after cleaning and priming.
When it isn’t the sealant
To be straight with you, there are a few things sealant will not fix:
- Plumbing faults behind the sealant
- Cracked trays, tiles or worktops
- A tray or bath that is not properly supported, until it’s fixed
If you are not sure, just ring 0345 464 0079 or drop us an email and we’ll give you a straight answer.
Joints and surfaces we work on
- Plot handovers
- Skirting & floors
- Show homes
- Windows & doors
- Bathrooms & en suites
- Kitchens
How it works
There’s no need to move everything out before we come, only the area right around the joints. We protect the rest, and the work takes a few hours in a single home for a typical job. In a small place like Adversane, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each joint is checked for movement before work begins.
- Old sealant is cut out and the joints cleaned.
- We make sure the joints are dry and prime them if needed.
- New sealant goes in, with baths filled first so they’re at their heaviest.
- The finished joints are checked and the cure times given.
Preparing for the visit
- Let us know about parking restrictions
- On commercial sites, let us know about site rules
- Mention any leaks or damp you’ve noticed
Get a quote
There’s no standard price list, because every job is different. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or drop us an email.
Advice
Leave it or put it right?
Running a new bead over the builder’s sealant might look tidy for a few weeks, but it won’t bond to the old layer. A lasting seal starts with removing the old one completely. Around Adversane, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
What it costs depends on the size of the job, how much old material has to come out and access to the work. We give a clear quote before work begins.
Why Adversane clients choose us
- Colour picked to suit the job
- 4.9 on Google from 180+ five-star reviews
- Approved under the ARBOMaster scheme
- 20+ years of sealant experience
Read what affects the cost and our reviews.
How to look after the new joints
Joint life depends on how it’s used and looked after. We suggest:
- Clean sealant with mild detergent, not abrasives
- Photograph failed sealant before it’s redone
- Report sealant problems to your builder during the snagging period
- Open a window or run the fan after bathing
Keep the bathroom ventilated, especially in the first year. Use the extractor fan or open a window after showers to help keep mould away.
Mould takes hold quickly in sealant that has gaps or lifted edges. Resealing before mould gets in saves a harder job later.
Questions from Adversane
Can you do new build mastic in Adversane?
Yes. We work across London and the South East, and Adversane is part of that. Just call 0345 464 0079 or send us an email with a few details of the job, and we’ll send you a clear quote.
Can you help a landlord with a rental near Billingshurst station?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear quote.
Are you ARBOMaster approved?
Yes. We are approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
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.
Can you do several jobs on one visit?
Yes, we can. More than one area can be quoted together.
Where is Mr Mastic based?
Our base is in Crawley, and we work across South East England, London and Scotland.
Is it normal for sealant to crack in a new home?
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.
How much does new build mastic cost in Adversane?
Size, access and the old material all affect the cost. Call for a quick quote.
New build mastic around Adversane
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For new homes near Billingshurst station, it’s worth checking the sealant early, while snags are still fresh.
Adversane is about 8 miles south-west of Horsham, in West Sussex. Jobs in Adversane get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Adversane is one of 371 places in West Sussex where we work for new build mastic. For nearby work, see our Crawley page, about 15 miles away.
Here we cover the RH14 postcode area for new build mastic. We cover properties on Stane Street, Adversane Lane and Lordings Road and the roads around them. If you are just outside Adversane, we cover North Heath (1 mile south), Gay Street (2 miles south), Codmore Hill (2 miles south-west), Broomershill (2 miles south) and Nutbourne (3 miles south). We also work in nearby towns such as Crawley (15 miles north-east), Horsham (8 miles north-east), Worthing (12 miles south), Burgess Hill (15 miles east), Littlehampton (13 miles south) and Shoreham-by-Sea (14 miles south-east).
Local landmarks in Adversane
For rail, the closest station is Billingshurst station, about 1.5 miles north-east. Open spaces near Adversane include The Mens.
Signs you need new build mastic in Adversane
Not every new-build joint gets the right sealant: decorators’ caulk in a wet area, or a stiff sealant where there’s movement. Neither lasts long.
Keep an eye out for any of the following:
- Cracked caulk along new skirting
- Leaking shower tray seals in a new home
- Gaps opening as the house dries out and settles
- Worktop and upstand sealant coming away
Around Adversane, as everywhere, new build mastic is only as good as the preparation behind it.
What to look for in a quote
- Whether the sealant suits the joint
- Whether VAT is included
- What insurance they hold
- Is the old sealant removed completely?
Work for landlords, hotels and businesses
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements.