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South East England and London

Construction Mastic in West Sussex

We cover 373 towns and villages in West Sussex for construction mastic, with failed joints always cut out and a 12-month guarantee on our workmanship.

Construction Mastic in West Sussex

Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.

Send your details01277 525 020

Towns we cover in West Sussex

Mastic packages for new-build and refurbishment projects. Pick your town below to see the details for your area, or send details for a fixed quote.

Main towns

More services in West Sussex

Postcodes in West Sussex

Construction mastic across West Sussex: what to expect

The specification and the programme set the job. Where the specification names a product, we use it, and if an alternative is proposed, it goes to you for acceptance first. Backing, primer and depth follow what the sealant maker sets out. Site teams most often ask us about external joints sealed in damp or cold conditions that are now failing and frame gaps too wide for sealant alone, across internal decorators’ caulk, cladding and panel joints and sanitary and kitchen joints.

Tell us your site hours and access windows and we will plan around them. On the day, the work area is kept contained and tidy, and we check in with your contact before moving on to each new area.

  1. We price from the drawings, specification and programme you send.
  2. You receive a fixed quote listing scope, products and phasing.
  3. You tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we confirm it with the quote.
  4. We seal each plot or floor as it’s released to us.
  5. Joints are cleaned, primed where the maker requires it, backed and sealed to the specification.
  6. We close out snagging and hand over with a 12-month guarantee.

Pricing in West Sussex

A quote for mastic packages depends on how many there are, their condition and the access. Call for a quote.

Why clients in West Sussex choose us

  • CSCS-carded applicators
  • CHAS accredited contractor
  • A Constructionline member, so easy to vet
  • RAL and finish matching where the product range allows

Request a quote

Tell us about the building, the joints and when you need the work done, and a fixed quote will follow. The easiest way is to phone 01277 525 020 or email a schedule or drawings.

Around Crawley

Locally, jobs take us to sites close to Friary Church of St Francis and St Anthony, St Wilfrid's Catholic School and Tilgate Park, among other places. Also close by are The George Hotel (under half a mile north), Three Bridges Junior School (less than half a mile south-east) and St Francis of Assisi Catholic Primary School (less than half a mile south-east). 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). Not far away are Tilgate Lake.

Sites and facades across West Sussex

We take on mastic packages across West Sussex, on large sites in places such as Crawley, Horsham and Worthing and small schemes elsewhere. Whatever paperwork the site requires, from RAMS to CSCS details, we confirm when we quote.

London and the South East are among the drier parts of the UK, though outside work in West Sussex still waits for dry faces, and cold mornings bring frost and condensation on steel and glass. Parts of West Sussex lie on or near the coast, where wind-driven rain and, closer to the shore, salt air are harder on external joints. Product choice and joint preparation matter more there.

Crawley: Recladding or extending a unit at a site like Denvale Trade Park, under half a mile north-east of Crawley, brings panel joints and frame perimeters into the programme. When a college such as Crawley College (to the north-east of Crawley) builds or refurbishes, the mastic package typically has to fit around students and staff.

Aftercare for building managers

To get the most from the new sealant:

  • Share drawings and the specification as soon as possible
  • Keep finished joints away from paint, plaster and scrapers
  • Allow flexibility for external sealing in damp or cold weather
  • Check frame gaps are within the sealant’s range before sealing

Our 12-month guarantee covers the workmanship from sign-off. Damage by others isn’t a workmanship fault which is why protection after sealing matters.

A missed perimeter seal on one window can wet the reveal and the plaster inside. On a new building that means remedial work after decorating, and a delay to handover. A check of every frame before decorators start is worth the time.

Work for main contractors and building owners

Hospitality, education, healthcare, office and retail clients book us directly too. We plan around the way the building is used, so the building keeps working while we do.

We work for building owners and managing agents on sealant work across single buildings or whole portfolios. One quote can cover more than one site, which keeps the paperwork simple.

What happens if it’s left?

Some packages split mastic across the window fitter, kitchen fitter and plumber. The result tends to be uneven finishes and arguments about who should seal what. One mastic subcontractor for the lot keeps it simple.

Comparing quotes

  • Are they CHAS accredited or on Constructionline?
  • Proof of insurance
  • Can the work be phased to keep areas open?
  • How joint depth will be controlled

Signs you need construction mastic

Most mastic snags on new buildings come from sequencing rather than product. Sealing before decorators, flooring or other trades have finished leaves joints exposed to damage, and the joint has to be redone.

These are often picked up first by site or facilities staff:

  • Oversized or tapered gaps around new frames
  • Existing joints on a refurb that need cutting out and resealing
  • Sanitary sealant damaged by following trades
  • Cracks opening in caulked internal joints

How the job changes by surface

Snagging before handover

Snags normally come from damage by following trades, missed joints or poor earlier work. We price snagging as part of the package or as a separate visit.

Internal decorators’ caulk

Acrylic caulk fills internal gaps around trims, boards and frames ahead of decorating. It’s paintable and suits gaps that don’t move while moving joints need a flexible sealant.

Questions we’re asked in West Sussex

How soon can the area be used again?

Curing time varies by product, and we confirm it on the day, and flag anything to keep off until it has cured.

Can you clear a mastic snag list before handover?

Yes. We can work through a mastic snag list area by area before handover and damaged joints are redone properly.

Is any job too small?

Whatever the size, the process is the same: send details, get a fixed quote, we seal, guaranteed.

How do you choose the sealant?

If the job is specified, we follow the specification. Otherwise, we recommend a product to suit the joint’s movement, the substrate and the conditions, following the manufacturer’s guidance.

What accreditations do you hold?

We are CHAS accredited and a Constructionline member, with CSCS-carded applicators. Public liability insurance of five million pounds is in place too.

Will you just go over the old sealant?

No. Overlaying old sealant is a frequent cause of early failure, so everything comes out first.

How long do sealant joints last?

There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Sealant joints are maintenance items, so inspect them regularly.

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Accreditations

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