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

Facade and window perimeter sealing in Ashurst, West Sussex

Our CSCS-carded applicators take on facade joint and window perimeter sealing on commercial buildings in Ashurst and the surrounding area. Send details for a fixed quote.

  • Draughts around frames and panels
  • Weathered joints at frame-to-structure perimeters
  • Unsightly perimeter sealant on a visible elevation
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Signed off, with 12 months’ guarantee.
Covering the South East & Scotland
CHAS accredited
Fully insured: £5m PL

Facade sealing near Ashurst

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

Facade sealing around Ashurst: what changes locally

The South East is one of the drier parts of the UK. 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. Ashurst is about 40 miles from central London. Building activity in the commuter belt runs from new flats near stations to business park refurbishments, so mastic packages have to keep pace with busy programmes.

Projects at schools like Ashurst CofE Primary School work to term dates, so mastic is programmed tightly.

Ashurst is about 7 miles north of Shoreham-by-Sea, in West Sussex. Businesses, contractors and managing agents in Ashurst use us for work on facade joints, as part of our coverage of West Sussex. Across West Sussex, 373 places are covered, including Ashurst. Brighton is covered too, around 11 miles from Ashurst.

Work on facade joints is covered throughout BN44. Buildings on Church Lane and School Lane are within our area. If your building is just outside Ashurst, we cover Partridge Green (2 miles north-east), Dial Post (2 miles north-west), Wiston (2 miles south-west), Littleworth (3 miles north) and Ashington (3 miles west). Bigger towns within reach include Crawley (14 miles north-east), Horsham (9 miles north), Worthing (8 miles south-west), Haywards Heath (11 miles north-east), Burgess Hill (9 miles east) and Littlehampton (12 miles south-west).

What’s near Ashurst

We work on buildings around Fountain Inn and the streets around them. Well-known places in the area include Steyning Museum (3.1 miles south). Green spaces nearby include Chanctonbury Hill and Knepp Wildland.

Map of Ashurst © OpenStreetMap contributors

Facade sealing for commercial buildings in Ashurst

Some clients need every window on a block resealed; others need a few leaking frames sorted. Either way, the method is the same: cut out, clean, back, prime where needed and seal. A 12-month guarantee applies to our workmanship. Site teams most often ask us about failed seals around shopfront and entrance frames and draughts around frames and panels, across shopfront frames, window and door perimeters and stone and brick facade joints. Whoever orders the work in Ashurst, the brief is normally the same: a clear scope, tidy work and joints that don’t fail again.

Construction in and around smaller places such as Ashurst is often barn conversions, small groups of houses or extensions to halls and schools. Each still needs a proper mastic package: window perimeters, facade joints and internal sealant to the specification.

The 12-month guarantee is for workmanship rather than wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we spell out the cover before we begin.

Location
Ashurst (BN44)
Wider area
West Sussex
Cover
12 months on our workmanship
Quote
Quoted before any work starts
Phone
01277 525 020
Last updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

From enquiry to sign-off

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. For a building around Ashurst, tell us how to find it and who will meet us. Add it to your enquiry and we’ll build it into the plan.

  1. We plan access and the order of elevations with the client.
  2. Weather and temperature are checked against the product’s limits.
  3. We remove the old bead and check the edges are sound.
  4. Faces are cleaned, primed where needed and backed.
  5. Sealant is gunned in and tooled hard onto both faces.
  6. We hand over with our 12-month workmanship guarantee.

What we need from you

  • Move anything stored against the joints
  • Share the asbestos register for older buildings
  • Share your working hours and any access restrictions

Getting a fixed quote

Every quote starts with the facts: what’s there, how much of it, how we reach it and what’s specified. Share whatever details you have and we’ll fill any gaps with a visit.

Ask for a quote

Related advice

Common questions from Ashurst clients

Is Ashurst too small for you to travel to?

No. Small places get the same service as large ones. Our area covers London and the South East counties. Send photos and a list of what needs doing, and we will plan the job to need as few trips as possible.

Can the mastic package for our job in Ashurst follow the site programme?

Yes. The mastic is planned around your key stages. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.

Will rain stop the work?

We can work through the year, but sealant needs a dry joint and temperatures within the product’s range. Frost and condensation on glass and steel are common on winter mornings, so we plan around the forecast.

What will the job cost?

It depends on the job: the volume of work, the access, the specified product and how it’s phased. Call for a quote.

Can you look at water coming in around a frame?

Yes. Photos are often enough to start, followed by a visit if needed. Failed perimeter sealant is a common cause, but not the only one.

How do we ask for a quote?

The quote form is the simplest route, though you can also call 01277 525 020 or send details through our quote form. Photos, drawings or a joint schedule help us quote quickly.

Do you guarantee your work?

Yes, for 12 months. If our installation fails in that time, we return and fix it.

How the job changes by surface

Coping and flashing joints

Where the specification calls for sealant at copings or flashings, we can seal them. They sit in the most exposed positions on the building.

Perimeter joints at frames and structure

Where framed systems such as shopfronts meet the building structure, there is a perimeter joint to seal. We seal those perimeter joints, not the framing or glazing itself.

When to bring in a specialist

For a quick touch-up, site staff may be fine, but anything bigger is another matter: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.

What you see is the finished bead, but most of the work is hidden. Backing rod, primer where specified and a joint designed to move with the building are where general trades tend to cut corners.

Work for main contractors and building owners

FMs need a contractor who is easy to get on site. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we will confirm them with the quote.

When you manage a building on behalf of an owner, clear figures and clear communication matter. You get a fixed quote, an agreed scope and a walk round at the end.

What happens if it’s left?

Every shower drives water through a split perimeter bead. The damage builds out of sight: wet linings, rusting fixings, staining and spoiled finishes. Resealing now costs less than repairing interiors later. Around Ashurst, it’s better to renew all the failing joints at once, rather than one at a time. Photos of every joint help us quote for the whole job.

No two sites price the same: the joint sizes, the specified product, access and working hours each have a bearing. A fixed quote follows once we understand the job.

Why choose Mastic Doctor in Ashurst

  • Public liability insurance in place
  • CHAS accredited
  • One number for every site we cover
  • Over 20 years of commercial sealing

Read how commercial sealant jobs are priced and our accreditations.

When to call us in Ashurst

Most facade joints fail through age and weathering. The bead hardens, chalks on the surface and loses the flexibility to follow the joint, and cracks or adhesion loss follow.

Common reasons buildings call us in:

  • Failed sealant on precast panel joints
  • Discoloured or dirty facade joints
  • Weathered facade joints that have lost their grip
  • Damp patches beside frames after rain

Units on estates such as Hollands Lane Industrial Estate, 1.8 miles east of Ashurst, tend to be reclad and refitted as tenants change, and each job leaves cladding and perimeter joints to seal.

Questions to ask before you book

  • What level of public liability insurance do they hold?
  • Health and safety accreditation such as CHAS
  • How the existing material will be dealt with
  • How they’ll work around occupants

Our contractor checklist

Accreditations

Trusted. Accredited. Insured.