West Sussex · England
New-build mastic & snagging in Crawley, West Sussex
New build mastic across Crawley and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Kitchen sealant that has pulled off the wall
- Messy sealant that spoils new finishes
- Sealant work across a run of new homes
Landlord and commercial work in Crawley
Housing providers, facilities teams and property managers book us too in Crawley and across West Sussex. Several sites can go on one quote, and we’re fully insured.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
How we handle new build mastic in Crawley
Snagging sealant properly means taking the failed bead out completely. Fresh silicone cannot bond to the old layer, so it all comes out before we clean, dry and reseal. We work on plot handovers, windows & doors and skirting & floors, and common reasons people get in touch are worktop and upstand sealant coming away and frame joints opening as the plaster dries.
Crawley is big enough to have new developments going up alongside its older streets. New homes need their plot mastic and sealant finished well, and owners often find snags in the first year or two, as a new house dries out and settles.
You’re covered for a year from the day we finish. If anything isn’t right with it, phone 0345 464 0079 or drop us an email.
- Where
- Crawley (RH10, RH11, RH12, RH6)
- Region
- West Sussex
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Do you need new build mastic in Crawley?
Sealant is often one of the last jobs before handover. Joints aren’t always cleaned of dust or primed, and the sealant sits on grit instead of the surface.
Any of these means the joints need attention:
- Plot mastic for developers ahead of handover
- Gaps behind new kitchen upstands
- Messy sealant that spoils new finishes
- Sealant that never bonded to the surface
Around Crawley, as everywhere, new build mastic is only as good as the preparation behind it.
What to look for in a quote
- The length of the guarantee
- Whether they seal over old material or remove it
- What happens if they find a problem under the old sealant
- What the quote includes, VAT included or not
New build mastic around Crawley
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. Crawley was built as one of England’s post-war new towns. Newer neighbourhoods have been added to Crawley over the years, so brand-new homes and homes from the post-war decades sit within a short drive of each other. Newer homes need snagging; older ones need their joints renewing.
If you’ve bought a new home near Crawley station, the sealant around baths, showers and frames is worth checking in the first year or two.
Crawley is about 27 miles south of London, in West Sussex. Every kind of property in Crawley is covered for new build mastic, old or new, large or small. Every job comes with our 12-month guarantee. Across West Sussex, we cover 371 places, Crawley among them.
We work across the RH10, RH11, RH12 and RH6 postcode area for new build mastic and the streets around it. New build mastic is available to properties on Station Road, Queens Square and High Street. Main roads around Crawley include the A23 and A264, so getting to you is simple. We also cover Southgate (1 mile south-west), Tilgate (1 mile south-east), West Green (1 mile north), Three Bridges (1 mile east) and Langley Green (1 mile north). Larger places within reach include Horsham (7 miles south-west), Haywards Heath (9 miles south-east), Burgess Hill (11 miles south), East Grinstead (8 miles east), Billingshurst (13 miles south-west) and Roffey (5 miles south-west). Crawley is one of the larger places we cover in West Sussex.
What’s near Crawley
Locally, jobs take us to homes and businesses close to Tilgate Park, St Wilfrid's Catholic School and St Francis of Assisi Catholic Primary School. Crawley has its own railway station: Crawley station. Other landmarks nearby include Crawley Hospital (0.5 miles north-west) and County Mall (within half a mile north-east). The countryside around Crawley includes Tilgate Lake.
Your questions about new build mastic in Crawley
I let a flat near Crawley station. Can you help?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before we start.
Is there a guarantee on new build mastic in Crawley?
Every job comes with our one-year guarantee, wherever it is. We are also fully insured and ARBOMaster approved.
How long before the joint can be used?
Different products cure at different speeds, so please follow the time we give you when we finish.
Are you insured?
Yes. We are fully insured for domestic and commercial work.
Do the sealants smell?
There can be a smell while the sealant cures, but it fades. Ventilation helps.
Is it normal for sealant to crack in a new home?
Cracking in the first couple of years is common as timber and plaster dry out. Poor preparation at handover adds to it.
Do you do commercial work?
Yes. Hotels, offices and other businesses use us, and we’re fully insured.
Who should fix failed sealant in a new build?
While the snagging or warranty period runs, the builder should be your first contact. If it is not sorted, or keeps failing, get in touch with us.
Places near Crawley
More services for Crawley
What we do, step by step
Our applicators work methodically: protect, prepare, seal, tidy. Typically it takes a few hours for most snagging lists, longer for a run of plots and we leave things clean and tidy. Jobs in a place the size of Crawley range from town-centre flats to offices and family homes. Whichever it is, tell us how to get in, where to park and where the work is.
- Each joint is checked for movement before work begins.
- We remove the failed sealant and clean the joints.
- 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.
How to prepare
- Let us know if you’ve seen damp or leaks
- Let us know about parking restrictions
- Tell us about any previous sealing or DIY attempts
Get a quote
Getting a quote is simple: tell us what needs doing and where. Photos by email help us understand the job, and we’ll take it from there.
Read more
Should I try it myself first?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
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. Taking it all out and starting again is the only way to get a lasting seal. In a busy place like Crawley, a failed joint in a flat or office can send water into the space below, where it’s often found late and is bigger to put right.
What it costs depends on the amount of work, how much old material has to come out and how easy the joints are to reach. You will have a clear quote before any work starts, so you know where you stand.
Why us?
- Full insurance on every job
- Sealant colour chosen to suit
- We agree the colour with you first
- White, clear, grey or another colour, product permitting
Read our cost guide or customer reviews.
Honest limits
We’d rather tell you now than do work that won’t last, so here’s what sealant cannot put right:
- Plumbing faults behind the sealant
- Cracking that points to a structural problem
- Damaged fittings that need replacing
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think before you book.
What we seal
- Kitchens
- Bathrooms & en suites
- Plot handovers
- Show homes
- Windows & doors
- Skirting & floors
What affects the quote in Crawley
Jobs vary more than people expect. The main factors:
- Whether old sealant or filler has to be cut out
- How easy the joints are to reach
- Working hours on commercial sites
- Any mould that needs treating
Combining jobs into one visit generally makes better use of the time than several visits. You’ll get one clear quote for the whole job.
Asking for a quote
To help us quote quickly, please include:
- Any previous sealing or DIY work
- Roughly how big the job is
- Access, such as stairs, a lift or height
- Whether it’s a home or a business
To get a quote, phone 0345 464 0079 or drop us an email with the location and a short description of the problem. You’ll have a clear quote before work begins.