Construction and new-build mastic in Southwick, West Sussex
Looking for construction mastic in Southwick? Send us the details for a fixed quote, backed by a 12-month guarantee on the work.
- Old sealant on a refurbishment that needs stripping before new work
- External joints sealed in damp or cold conditions that are now failing
- Oversized or tapered gaps around new frames
Construction mastic near Southwick
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
About our construction mastic in Southwick
The programme rarely stands still, so the mastic package has to flex with it. We agree a sequence at the start and adjust it as the site manager releases areas, so applicators arrive when areas are genuinely ready. Sealing too early only means coming back once others have damaged it. If you are dealing with early adhesion failures on new external joints and sealant knocked or painted over by other trades, we can put it right, on internal decorators’ caulk, window and door perimeters and sanitary and kitchen joints alike. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, the work in Southwick is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.
In a smaller place such as Southwick, construction tends to mean small housing schemes, conversions and extensions to community buildings. Small schemes still need window perimeters, facade joints and internal sealant done to the specification.
Every job we finish is backed by a 12-month workmanship guarantee, wherever the site is. If a joint we sealed fails because of how it was installed, we come back and put it right.
- Location
- Southwick (BN42, BN41, BN43)
- Region
- West Sussex
- Guarantee
- A 12-month guarantee
- Quotes
- Quoted before any work starts
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Questions about Southwick
Is a smaller place like Southwick outside your area?
No. Places such as Southwick are covered as much as the big towns. We cover Greater London and the counties of the South East. Good photographs up front let us bring everything on the first visit.
Is a hospital such as Southlands Hospital somewhere you can work?
Yes, hospitals are one of the sectors we cover. The estates team’s permit system and infection-control rules come first, and the work is planned around them.
What accreditations do you hold?
We are CHAS accredited and a Constructionline member, and our applicators hold CSCS cards. We’re fully insured for public liability.
Are you fully insured?
Yes. Our insurance certificate can be sent alongside the quote.
Do you need to see the site first?
Photos, drawings or a schedule are often enough to quote. If the job needs a look first, we will arrange a visit before quoting.
Can you fit around our programme?
We follow the trades through the building. Areas are sealed as they’re released by the site team.
Will you quote for a small job?
We quote for single jobs as well as large packages and programmes. Send details for a fixed quote.
Sites and facades in and around Southwick
Southwick sits close to the coast, within about 1 mile. On a coastal site, facade and perimeter joints face driven rain and, closer to the beach, salt, so joint design, primers and product choice deserve extra care. Southwick lies roughly 46 miles out from central London. Towns within reach of London tend to keep building, from flats to offices and schools, so mastic packages have to keep pace with busy programmes.
Recladding or extending a unit at a site like Grange Industrial Estate (0.5 miles south-west of Southwick) brings panel joints and frame perimeters into the programme. For a contractor working at a hospital such as Southlands Hospital, which lies west of Southwick, perimeter and facade sealing is planned around patients and deliveries. School extensions, at buildings such as Eastbrook Primary Academy, usually run to the summer holidays, mastic included.
Southwick is about 2 miles east of Shoreham-by-Sea, in West Sussex. Commercial clients in Southwick use us for work on mastic packages. 373 places across West Sussex fall within our area, including Southwick.
We take on mastic packages across the BN42, BN41 and BN43 postcode area. Buildings on Station Road, Roman Crescent and Southwick Street are within our area for mastic packages. Access to Southwick is via the A259 and A270. Just outside Southwick, we also work in Kingston by Sea (1 mile north-west), Portslade (1 mile north-east), Shoreham-by-Sea (2 miles west), Hangleton (2 miles north-east) and Old Shoreham (2 miles west). Further afield, our area takes in Worthing (7 miles west), Haywards Heath (13 miles north-east), Burgess Hill (10 miles north-east), Littlehampton (13 miles west), Lancing (4 miles west) and Rustington (12 miles west).
Landmarks near Southwick
We work on buildings around Shoreham Academy, Benfield Hill and The Ship Inn, among other places. Southwick has its own railway station: Southwick station. Other landmarks nearby include Southlands Hospital (1 mile west) and Churchill Square (4 miles east). Green spaces nearby include Shoreham Beach and Thundersbarrow Hill.
Looking after the joints
Problems stay small when the joints are checked regularly. Specifically:
- Ask for joint and product checks before the package is urgent
- Use the product the specification names
- Ask cleaners to use soft cloths around fresh sealant
- Keep finished joints away from paint, plaster and scrapers
Record which products went where in the handover file. That helps the building owner maintain the joints later and avoids guesswork when joints are renewed. Tell us what records you need and we will confirm with the quote.
Sealing outside when the joint is damp or too cold leads to poor adhesion. Holding off until conditions suit avoids callbacks so external sequencing builds in some flexibility.
On site: what to expect
Diagnose, treat, sign off: that’s the shape of every visit. We inspect the joints and confirm what’s in scope, then we prepare and seal each joint with the specified product, and we finish with a walk round so the work can be signed off. Work in places the size of Southwick is planned as a single visit where we can. Clear photographs and measurements help us bring the right products.
- First we take quantities off the drawings and read through the specification.
- We return a fixed quote that ties the mastic package to your programme.
- Any site paperwork you need (RAMS, insurance certificate, CSCS details) is confirmed with the quote.
- Areas are sealed plot by plot or floor by floor as the trades hand them over.
- Each joint is prepared, backed to depth and sealed in the product the specification names.
- Before handover, snags are dealt with and the package is signed off under our 12-month guarantee.
Getting the site ready
- Tell staff and tenants when we will be in
- Point out any areas we must not close
- Send any specification or drawings in advance
Ask for a quote
Let us know the site, the scope and your timescale, and a fixed quote will follow. To get it moving, speak to us on 01277 525 020 or send details through our quote form.
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What happens if it’s left?
Some packages split mastic across the window fitter, kitchen fitter and plumber. In practice it often means different standards, gaps in responsibility and snags nobody owns. A single mastic package gives one point of responsibility, with the same standard on every plot. A failed joint lets water into a building whatever its size. Catching it early means a reseal rather than repairs.
Small jobs and large programmes are priced from the same things: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote, and you will have a fixed figure to work with.
Why clients in Southwick choose us
- Fully insured
- 12 months’ guarantee on every job
- RAL and finish matching where the product range allows
- Health and safety: CHAS accredited
Work for main contractors and building owners
We take on planned maintenance as well as one-off repairs: working through a building or an estate in stages that fit your budget. Sites in Southwick can sit alongside others in a wider programme across West Sussex.
Hotels, schools, healthcare sites, offices and retail units book us directly too. We plan around the way the building is used, so the building keeps working while we do.
What sets the cost
We price every job individually. The things that drive the figure:
- Distance, for remote addresses
- Phasing around occupants
- Which sealant the job calls for
- Access and working height
Quantities, awkward access and phased working all shape the price. Site requirements like inductions and permits play a part as well.
Details that help us quote
A good diagnosis starts with the right details. Tell us:
- Specification clauses that apply
- The asbestos register, for older buildings
- Your programme or deadline
- The postcode of the building
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to phone 01277 525 020 or email the details over with what you know.
Also near Southwick
Also in Southwick
How the job changes by surface
Kitchens and utility areas
Kitchen joints are sealed after fitting and before final clean. A kitchen-suitable sealant is used and hygienic or food-safe grades wherever food contact is possible.
External facade and movement joints
Brickwork, blockwork and panel movement joints need a sealant with the right movement capability. We set the depth with backing rod to avoid three-sided adhesion.