The Mastic Doctor team standing beside their branded vans outside an office building
West Sussex · England

West Ashling construction mastic

Mastic packages for new-build and refurbishment projects across West Ashling, carried out by CSCS-carded applicators. CHAS accredited and fully insured.

  • Early adhesion failures on new external joints
  • Missed perimeter joints on a new elevation
  • Sealant knocked or painted over by other trades
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
12-month guarantee on our workmanship.
Covering the South East & Scotland
CHAS accredited
£5m public liability

Need construction mastic in West Ashling?

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

Construction mastic for commercial buildings in West Ashling

A typical mastic package covers more than window perimeters: frame perimeters inside and out, caulking to trims and boards where the specification calls for it, sanitary silicone, kitchens, and the final snag list. Splitting those between trades often leaves gaps in responsibility. The enquiries we see most involve internal caulk splitting as the building dries out and mastic snags holding up handover, across sanitary and kitchen joints, cladding and panel joints and brick and block movement joints. A specialist sealant contractor works differently from a general builder: in West Ashling, that means joint design, primers and backing rod as standard.

Around smaller places like West Ashling, building work normally means conversions of farm buildings, a few new houses or an extension to a hall or school. Each still needs a proper mastic package: window perimeters, facade joints and internal sealant to the specification.

Every job is signed off with a 12-month guarantee. The promise is simple: if our work fails within that year, we put it right.

Where
West Ashling (PO18)
Region
West Sussex
Guarantee
A 12-month guarantee
Quote
A fixed quote before we start
Phone
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Questions we are asked in West Ashling

Can work at a site such as University of Chichester fit around teaching?

Yes. Tell us the term dates, vacation periods and access windows, and we’ll plan the work around them. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.

Will you take on work at estates like Hambrook Business Park, close to West Ashling?

Yes. We cover West Ashling and the area around it, including industrial estates, business parks and retail parks such as Hambrook Business Park. A few photos and the unit address let us price the work.

Can fire-rated sealing at service penetrations be included?

We install fire-rated sealant where it is the specified product. If the detail calls for collars, wraps or batts instead, we will tell you.

How do you deal with asbestos in old sealant?

Some older mastics, especially in pre-2000 buildings, can contain asbestos. We check the asbestos register before cutting out old sealant in an older building, and if asbestos is suspected, work stops until it’s tested. We don’t remove asbestos-containing materials.

Can you follow the specification on our project?

Yes. Include it with the drawings when you ask for a quote, and we will price the work to it.

What happens if the weather stops external sealing?

Conditions have to suit the product before external work starts. Sealing in poor conditions risks adhesion failure.

What’s the quickest route to a quote?

You can use the quote form on this site; alternatively, phone 01277 525 020 or email the details over. Photos, drawings or a joint schedule help us quote quickly.

Why act early in West Ashling

On a refurbishment, there’s a choice between resealing existing frames and replacing them. Sound frames often need only a new perimeter seal. We will say so if a frame itself is the problem. For buildings around smaller places like West Ashling, water damage can go unnoticed for longer, especially where a building isn’t used daily, so a failed joint can leak for a while before anyone sees it. Renewing joints in good time avoids the problem.

There’s no price list, since every building and every scope is different. Call for a quote.

Why appoint us

  • 12-month guarantee on workmanship
  • Coloured sealants to suit the setting, where available
  • Joints cleaned back to sound surfaces
  • Colour agreed before work starts

Take a look at how commercial sealant jobs are priced and how we’re accredited.

Looking after the joints

Regular inspection catches problems early. Specifically:

  • Put any product change through the designer first
  • Protect sealed areas from following trades
  • Bring the mastic contractor in after the last trades are through
  • Ask for joint and product checks before the package is urgent

The package carries our 12-month guarantee for workmanship. The guarantee covers how we sealed, not later damage by other trades, so protecting sealed areas matters.

One unsealed frame can let water into finished internal areas. That usually means redoing finishes in a completed area, and a delay to handover. Checking perimeters before internal finishes go on avoids it.

New build and refits around West Ashling

West Ashling sits in one of the drier corners of the country, the South East. Winter mornings still bring frost and condensation on frames and panels, so we time external mastic for dry faces and agree it with the site team. West Ashling has a number of hotels close by, all within 2 miles. Hotel refurbishments often run to tight programmes between busy periods, and perimeter and sanitary sealant has to keep up.

For contractors on a campus like University of Chichester (3.5 miles east of West Ashling), facade and perimeter sealing has to fit around students and term dates. Hospital estates such as Chichester Centre (3.6 miles east of West Ashling) tend to grow and change in phases, often next to occupied wards, so facade and perimeter sealing has to fit the estates team’s plan.

West Ashling is about 3 miles north-west of Chichester, in West Sussex. Any commercial site in West Ashling is covered. We work across 373 places in West Sussex, large and small. Sites around Portsmouth have their own page, roughly 11 miles from West Ashling.

We take on mastic packages across the PO18 postcode area. Among the streets we cover are Heather Close, Ashling Close and Portal Close, and sites on any of them can send details for a fixed quote. We also cover East Ashling (1 mile east), Funtington (1 mile north-west), Broadbridge (1 mile south), Hambrook (1 mile west) and West Stoke (1 mile north-east). Further afield, our area takes in Bognor Regis (9 miles south-east), Chichester (3 miles south-east), Selsey (9 miles south), Littlehampton (14 miles east), Rustington (15 miles east) and Portfield (4 miles east).

Around West Ashling

Around West Ashling, our work takes us to commercial buildings near The Horse And Groom Public House, among other places. The nearest railway station is Bosham station, roughly 1.2 miles south of the centre. Well-known places in the area include Chichester Centre (3.6 miles east) and Chichester Castle (3.5 miles south-east). The countryside around West Ashling includes Kingley Vale National Nature Reserve and Stoke Down.

Map of West Ashling © OpenStreetMap contributors

How the job changes by surface

Internal decorators’ caulk

Caulk is easy to apply badly. Done properly, it saves decorators time and gives a clean line and reduces snags.

Snagging before handover

Snags typically come from damage by following trades, missed joints or poor earlier work. Snagging can be included or priced separately, depending on what suits the programme.

General trades versus a specialist

Some joints are best left to specialists: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. A poor seal in places like these tends to cost more to put right later.

Site maintenance staff can often handle a short internal joint. The usual problems come from preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.

When to call us in West Ashling

Swapping the specified sealant for a cheaper general-purpose product is a common cause of failure. A sealant that isn’t right for the substrate or the movement will fail ahead of time. We use what’s specified, and any substitute goes to you for acceptance.

Things that normally lead to an enquiry:

  • Sealant knocked or painted over by other trades
  • Caulk cracking where joints are moving more than expected
  • A mastic package split between trades with no clear owner
  • Frame perimeters left unsealed or poorly sealed

Historic houses such as West Dean House (to the north-east of West Ashling) are a reminder of the older buildings in the wider area, where sealing against old stone, brick or timber needs compatible products.

Before you book anyone

  • Is the sealant right for the movement and the substrate?
  • Is depth set with backing rod, or bond-breaker tape in shallow joints?
  • How the existing material will be dealt with
  • Whether their applicators hold CSCS cards

Our contractor checklist

Our process

Inspect, seal, sign off: every visit follows that pattern. First comes an inspection and agreement on scope, then the work is carried out to the specified product and detail, and we finish with a walk round so the work can be signed off. For work around West Ashling, we aim to finish in one visit, so we ask for photos and rough sizes first. That way the right products come on the day.

  1. Drawings, specification and programme come to us.
  2. We take off quantities and return a fixed quote.
  3. We agree with the site team which areas come first.
  4. Plots or floors are sealed as they’re handed over.
  5. Joints are prepared, backed and sealed to the specification.
  6. Snags are cleared and the package signed off with our 12-month guarantee.

Preparing the site

  • Confirm the product named in the specification
  • Share the asbestos register for older buildings
  • Warn occupants and staff about the work

Request a quote

Send us photographs, drawings or a joint schedule and a fixed quote comes back to you. Where a site visit makes more sense, we’ll arrange one.

Get a quick quote

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Accreditations

Trusted. Accredited. Insured.