West Sussex · England
New-build mastic & snagging in Handcross, West Sussex
Plot mastic for developers and snagging failed sealant in new homes for homes and businesses in Handcross and across West Sussex. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Sealant applied over dusty or wet surfaces
- Shower seals failing in the first year or two
- Kitchen sealant that has pulled off the wall
New build mastic in Handcross, done properly
A new house keeps drying out and settling for its first couple of years. Timber dries and shrinks, and baths and trays settle, and sealant applied in a hurry at handover can split. If you have cracked caulk along new skirting and cracked sealant around new window and door frames, we can put it right, whatever the surface.
Around Handcross, older homes often have timber floors that move through the year, which is why skirting and threshold joints need a flexible sealant, not filler.
Big or small, it’s backed by our one-year guarantee.
- Location
- Handcross (RH17)
- Wider area
- West Sussex
- Cover
- A year, on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Aftercare tips
Simple care keeps the joints in good condition. Our advice:
- Do not wait for the house to settle if water is getting through
- Put sealant faults on your snagging list early
- Ventilate bathrooms well, especially in the first year
- Keep water off fresh sealant until it has cured
Keep an eye on the joints over the first couple of years. Small gaps can appear as the house dries.
A seal that splits early is often a sign of movement. Getting it resealed properly, and any movement checked, stops it recurring.
Also near Handcross
More services for Handcross
What new build mastic looks like in Handcross
London and the South East are among the drier parts 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 Balcombe station, the sealant around baths, showers and frames is worth checking in the first year or two. Around Handcross, as everywhere, new build mastic is only as good as the preparation behind it.
Handcross is about 4 miles south of Crawley, in West Sussex. From the centre of Handcross to the outskirts, we cover new build mastic for every kind of property. Across West Sussex, we cover 371 places, Handcross among them.
We work across RH17 for new build mastic and the streets around it. You will find streets such as High Street, London Road and Windmill Platt, and we cover them all. We also cover the places around Handcross: Slaugham (1 mile south), Plummers Plain (2 miles south-west), Colgate (3 miles north-west), Broadfield (3 miles north) and Lower Beeding (3 miles south-west). We also work in nearby towns such as Crawley (4 miles north), Horsham (5 miles west), Haywards Heath (6 miles south-east), Burgess Hill (7 miles south-east), East Grinstead (10 miles north-east) and Shoreham-by-Sea (15 miles south).
Local landmarks in Handcross
Locally, jobs take us to homes and businesses close to The Royal Oak Public House and Handcross Park School and the streets around them. For rail, the closest station is Balcombe station, about 2.8 miles east. Well-known places in the area include Crawley Hospital (4.3 miles north). Not far away are Tilgate Lake and Blunts Wood and Paiges Meadow.
Why act early in Handcross
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. In a small place like Handcross, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please phone 0345 464 0079 or send us an email and we will talk you through it.
What you get with us
- More than 20 years in sealant work
- We are fully insured
- Every job guaranteed for a year
- Anti-fungal silicone where joints get wet
See our cost guide and our reviews.
Landlord and commercial work in Handcross
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Hotels need rooms back in use, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
What happens on the day
We work through the job in order: protection first, then preparation, sealing and a tidy-up. Typically it takes a few hours for most snagging lists, longer for a run of plots. Somewhere as small as Handcross, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First we work through your snagging list or plot schedule with you.
- 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.
- A sealant chosen for each area goes in and is tooled smooth.
- Each area is checked and left with its cure time.
Before we arrive
- Mention if the joints have been sealed before
- Clear items away from the joints we are working on
- Mention any parking rules near the property
Get a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. Whenever you are ready, ring 0345 464 0079 or drop us an email.
Advice
Handcross: your questions answered
Is Handcross in your area for new build mastic?
Yes. We work across London and the South East, and Handcross is part of that. Just ring 0345 464 0079 or send us an email with a few details of the job, and we’ll send you a clear quote.
Do you work for landlords with property near Balcombe station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or email us and tell us about the property, and we will give you a clear quote.
What colour sealant will you use?
We use white, clear or a colour to suit the finishes. Tell us what you’d like when you get a quote.
Can I do it myself?
Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Is there any odour?
That depends on the sealant. Some products have a noticeable smell, others very little, and any smell fades as they cure.
Should I wait before resealing?
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.
Why does sealant fail so quickly in new builds?
It’s common, and there are normally two reasons: the house moving as it dries, and sealant that never bonded properly. Cutting it out and resealing properly fixes both.
Who should fix failed sealant in a new build?
Report it to the builder first while you are covered. Once that is done, or if they won’t put it right, we’ll cut it out and reseal it.
What affects the quote in Handcross
There’s no set price list, because jobs vary so much. What we look at:
- How many areas need sealing
- Whether old sealant or filler has to be cut out
- Which sealant suits the joint
- Whether the work is at height
The cost reflects the work involved, not guesswork. That is why we ask about the job first.
What to tell us for a quote
When you contact us, these details help:
- What the problem is, such as mould, gaps, leaks or cracking
- A few photos by email, if you can
- How many joints, rooms or windows are involved
- Where the job is, and your postcode
We quote each job on its own, so start by telling us what you need. Simply ring 0345 464 0079 or email us and describe the job and send photos if you have them.
What the job involves on each surface
Windows and doors
A draught at a new window can be a missed or failed joint. We look at the joints and reseal where needed.
Bathrooms and en suites
Baths, showers, basins and trays in new bathrooms are the most common new-build reseal. The old sealant comes out and anti-fungal sanitary silicone goes in after cleaning and priming.
DIY versus a professional finish
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.