Construction and new-build mastic in Crawley, West Sussex
We carry out mastic packages for new-build and refurbishment projects in Crawley. Send details for a fixed quote.
- Oversized or tapered gaps around new frames
- Inconsistent sealant finishes from plot to plot
- Caulk cracking where joints are moving more than expected
Construction mastic across Crawley
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
What affects the price in Crawley
We price every job individually. The things that drive the figure:
- Any access equipment needed
- Removal of failed or old sealant
- Travel to remote or island sites
- Whether the work must be split into stages
Quantities, awkward access and phased working all shape the price. So do site requirements such as inductions and permits, along with the time of year for external work.
Before you send an enquiry
The more we know, the firmer the quote. Helpful details to send:
- The site address and postcode
- Approximate linear metres or a joint schedule
- The asbestos register, for older buildings
- Whether the building will be occupied during the work
If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price the work to it. For smaller jobs, photographs and a description will do.
How we handle construction mastic in Crawley
A typical mastic package covers more than window perimeters: external door and window perimeters, internal decorators’ caulk where specified, sanitary joints in bathrooms and washrooms, kitchen worktops and splashbacks, and snagging before handover. Splitting those between trades often leaves gaps in responsibility. We work on sanitary and kitchen joints, cladding and panel joints and window and door perimeters, and the usual reasons a site gets in touch are missed perimeter joints on a new elevation and failed sealant in an existing building being refurbished. Whether you call it commercial sealant work, mastic application or joint sealing, the work in Crawley is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.
Places the size of Crawley tend to see a steady run of new-build and refurbishment schemes. Mastic packages run from window perimeters and cladding joints to internal and sanitary sealant, all to the specification.
Our workmanship is guaranteed for 12 months, wherever the site is. If our installation lets you down in that time, we return and fix it.
- Where
- Crawley (RH10, RH11, RH12, RH6)
- Region
- West Sussex
- Guarantee
- A 12-month guarantee
- Price
- Quoted before any work starts
- Telephone
- 01277 525 020
- Page updated
- 3 November 2026
Contractors’ notes for Crawley
The area within 2 miles of Crawley holds plenty of hotels. Hotel schemes tend to have fixed reopening dates, so the mastic is programmed tightly with the other trades. Crawley is about 27 miles from central London. Construction around the commuter belt mixes station-side flats with refurbished offices and units, so mastic packages have to keep pace with busy programmes.
For contractors at a school such as Three Bridges Junior School, sealing has to be finished before term starts. For a contractor working at a hospital such as Crawley Hospital, which lies north-west of Crawley, perimeter and facade sealing is planned around patients and deliveries. New units and refits on sites such as Denvale Trade Park (less than half a mile north-east of Crawley) need their panel and perimeter joints sealed to the specification.
Crawley is about 27 miles south of London, in West Sussex. We send applicators to Crawley for mastic packages. Crawley is one of 373 places we cover in West Sussex for mastic packages. We also cover Brighton, some 19 miles away.
We take on mastic packages across the RH10, RH11, RH12 and RH6 postcode area, for business premises of every kind. Buildings on Station Road, Queens Square and High Street are within our area for mastic packages. You will find Crawley on or near the A23 and A264, so getting applicators and materials to site is simple. Sites close to Crawley are covered too, including 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). Further afield, our area takes in 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). Among the larger centres in West Sussex is Crawley, and we take on mastic packages for its commercial and public buildings.
Landmarks near Crawley
Locally, jobs take us to sites close to Tilgate Park, St Wilfrid's Catholic School and St Francis of Assisi Catholic Primary School, among other places. Crawley has its own railway station: Crawley station. Other landmarks nearby include Crawley Hospital (0.5 miles north-west) and County Mall (under half a mile north-east). For a walk, there’s Tilgate Lake.
How the job changes by surface
Kitchens and utility areas
Commercial kitchens often need hygienic or food-safe sealants. We follow the specification and seal to a smooth, cleanable finish.
External facade and movement joints
Many facade substrates need a primer before sealing. We prime where the manufacturer specifies, and seal only with a dry joint inside the product’s temperature range.
Crawley: questions and answers
Could you schedule work at a campus like Crawley College for the vacation?
Yes. We plan campus work around teaching, exams and residence turnarounds. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.
Is Denvale Trade Park, near Crawley, within your area?
Yes. We cover Crawley and the area around it, including industrial estates, business parks and retail parks such as Denvale Trade Park. Photos and a short description are enough for a first look.
Do you have public liability insurance?
Yes. Mastic Doctor is fully insured, public liability included.
What about RAMS and site documents?
Requirements differ from site to site, so list what you need, whether RAMS, insurance or CSCS details, and we will confirm with the quote.
How do you work with the site programme?
We seal plot by plot or floor by floor as areas are released. The sequence is settled with your site team and adjusted as things change.
Will you stick to the specified products?
Specification first, then the maker’s instructions. Primers, backing and joint depth follow what the manufacturer sets out.
Does weather matter for sealant work?
For external joints, yes. Sealant needs a dry joint and a temperature within the product’s range, so damp, frosty or very cold days can stop external work. Inside work is seldom held up.
Why it’s worth doing now in Crawley
Sealing over damaged or contaminated new joints might save a day. New sealant laid on old or dirty sealant has nothing to bond to, and the defect comes back after handover. Damaged joints are removed and resealed from clean faces. Water getting in through a failed joint can damage finishes, stock and fittings, and putting that right usually costs more than the reseal. It pays to act early.
What a job costs comes down to the quantity of joints, what has to come out first and how the joints are reached. Call for a quote once you have the details.
What you get with us
- Colour agreed before work starts
- A range of standard colours, depending on the product
- 12 months’ guarantee on every job
- A fixed quote before work starts
Take a look at what affects the cost and our accreditations.
Diagnose, treat, sign off
Where the site stays busy, we agree a sequence with your contact so the disruption stays in one area at once. Each section is protected, cleaned back and sealed before we move to the next. In a large town like Crawley, work on busy buildings is planned area by area, keeping disruption low. Photos and drawings let us propose a sequence with the quote.
- We start with the drawings, specification and programme.
- We take off quantities and return a fixed quote.
- The sequence is agreed with the site manager.
- Each area is sealed when it’s released.
- Every joint is cleaned, set to depth and sealed with the specified product.
- Snags are cleared and the package signed off with our 12-month guarantee.
Preparing the site
- Tell us which areas need to stay in use
- Point out parking and an unloading spot
- Warn occupants and staff about the work
Request a quote
A handful of photographs and a postcode is the fastest way to a quote. Upload them with the quote form, or give us a call on 01277 525 020 or email drawings and photos if you’d rather talk the job through.
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For managing agents and facilities managers
Planned maintenance programmes are welcome: working through a building or an estate in stages that fit your budget. Crawley can form part of a wider programme.
Hospitality, education, healthcare, office and retail clients book us directly too. We plan around the way the building is used, so guests, pupils, patients or staff are disturbed as little as possible.
Nearby places to Crawley
More services for Crawley
Aftercare for building managers
A few simple habits keep the new joints working:
- Get the mastic subcontractor involved early in the programme
- Allow flexibility for external sealing in damp or cold weather
- Use the product the specification names
- Bring the mastic contractor in after the last trades are through
At handover, keep the product details with the O&M information. That helps the building owner maintain the joints later, and tells you what to reseal with. We can confirm the handover information you need when we quote.
External joints sealed in poor weather are a common cause of early failure. Holding off until conditions suit avoids callbacks so external sequencing builds in some flexibility.