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

Construction and new-build mastic in East Dean, West Sussex

We carry out mastic packages for new-build and refurbishment projects in East Dean and the surrounding area. Send details for a fixed quote.

  • Caulk cracking where joints are moving more than expected
  • Old sealant on a refurbishment that needs stripping before new work
  • Perimeter gaps outside the sealant’s range
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
South East, London & Scotland
CHAS & Constructionline
£5m public liability

Construction mastic across East Dean

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

Construction mastic in East Dean

Since 2005 we’ve worked alongside main contractors, developers and fit-out firms. We price from drawings and the specification, agree the sequence with the site team and seal as areas are released. To price a package in East Dean, send drawings and the specification through our quote form. The enquiries we see most involve a long mastic snag list close to completion and different trades sealing to different standards, on sanitary and kitchen joints, floor and skirting junctions and internal decorators’ caulk. Looking for mastic applicators who cover East Dean? We’ve been sealing commercial buildings since 2005, CHAS accredited and a Constructionline member.

For a site near East Dean, the mastic visit is planned so the right sealants, primers and backing rod are on hand, timed to the stage the job has reached. Send drawings or photographs and the programme and we will quote to suit.

We stand by our work: 12 months, guaranteed. That covers our preparation and application, and we come back if anything isn’t right.

Where
East Dean (PO18)
Wider area
West Sussex
Guarantee
12 months on our workmanship
Quote
A fixed quote before we start
Phone
01277 525 020
Last updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

New build and refits around East Dean

At about 49 miles from central London, East Dean is within reach of the capital. Building activity in the commuter belt runs from new flats near stations to business park refurbishments, which keeps mastic packages in demand. Rainfall across the South East, East Dean included, is lower than in many parts of the UK. Even so, frost and condensation on steel and glass are common on winter mornings, which is why external dates are agreed with the site manager.

Work at a hotel such as Woodstock House Hotel, 1 mile west of East Dean, tends to be programmed around bookings, mastic included. Projects at colleges like West Dean College of Arts and Conservation (2.6 miles west of East Dean) tend to run to term dates, so the mastic is planned tightly.

East Dean is about 6 miles north-east of Chichester, in West Sussex. We cover East Dean, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. East Dean is one of 373 places we cover in West Sussex. We also cover Portsmouth, around 17 miles from East Dean.

We take on mastic packages across the PO18 postcode area. If your site is on Main Road, Chapel Row and Charlton Road or close by, send details and we’ll quote for mastic packages. We also cover Charlton (1 mile west), Singleton (2 miles west), West Dean (3 miles west), Heyshott (3 miles north) and Cocking (3 miles north-west) for mastic packages. Nearby towns on our patch include Worthing (15 miles south-east), Bognor Regis (8 miles south), Chichester (6 miles south-west), Selsey (13 miles south), Littlehampton (11 miles south-east) and Rustington (11 miles south-east).

Around East Dean

Locally, jobs take us to sites close to The Star And Garter Public House and the streets around them. Well-known places in the area include Weald and Downland Gridshell (1.8 miles west) and Chichester Centre (5 miles south-west). Open spaces near East Dean include Graffham Common and Levin Down.

Map of East Dean © OpenStreetMap contributors

FAQs: East Dean

Can you take on a job at a hospital such as Chichester Centre?

Yes, provided the work is planned with the site’s estates team. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.

Could you schedule work at a campus like West Dean College of Arts and Conservation for the vacation?

Yes. Education sites usually want the work in vacations or in phases during term, and we plan to suit. Let us know which documents your site asks for, and we’ll confirm them alongside the quote.

When is resealing likely to be due?

There isn’t a single answer, since movement, weather, cleaning and use all affect it. Regular checks let you plan resealing before leaks or damage.

How long does a job like this take?

The duration is planned around your programme and the access we’re given. We will give you an estimate of time on site when we quote.

Who decides which product is used?

Where there’s a specification, we use the product it names. Otherwise, we recommend a product to suit the joint’s movement, the substrate and the conditions, following the manufacturer’s guidance.

Do you seal on top of existing sealant?

No, never. Sealing over old material is one of the classic causes of early joint failure, so it all comes out first.

Do you offer coloured sealant?

That depends on the product specified. Some ranges offer many colours, others very few, so the available colours are confirmed with the quote.

On site: what to expect

Tell us your site hours and access windows and we’ll 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. Rural sites near East Dean may need directions, gate codes or a contact on site. Add it to your enquiry and we’ll build it into the plan.

  1. First we look at the scope on site or from drawings.
  2. A fixed quote sets out scope, products and phasing.
  3. Paperwork is agreed and applicators are inducted on site.
  4. We seal plot by plot or floor by floor in line with the programme.
  5. Problems we find, such as oversized gaps, are raised straight away.
  6. The package is closed out, snags cleared and backed by our 12-month guarantee.

What we need from you

  • Send your site hours and access windows
  • Move anything stored against the joints
  • Tell staff and tenants when we’ll be in

Ask for a quote

The quickest route to a quote is a few photos and the site postcode. Send them through the quote form, or ring 01277 525 020 or send details through our quote form if you’d rather talk the job through.

Get a price

Advice

What sets the cost

Quotes vary with the job. It mainly depends on:

  • Any access equipment needed
  • Which sealant the job calls for
  • Working within restricted access windows
  • Induction, permit and paperwork requirements

Access often affects the price as much as the sealing: joints within easy reach take less time than ones that need access equipment. Mention the access as part of your enquiry.

Details that help us quote

For an accurate fixed quote, we need to understand the site. Useful things to include:

  • Any dates the work must fit around
  • Anything awkward about access or site hours
  • Photos of the joints, close up and from further back
  • Rough lengths or quantities, or drawings if you have them

Pricing a project or setting a maintenance budget? We will quote against your scope and drawings you can plan around. For a chat about it beforehand, give us a call on 01277 525 020 or email the details over.

Work for main contractors and building owners

Main contractors use us as their sealant subcontractor, on new build and refurbishment alike. Programme, specification and site rules come first, with CSCS-carded applicators on site.

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 East Dean can sit alongside others in a wider programme across West Sussex.

When to call us in East Dean

Frames installed with uneven gaps make perimeter sealing harder. Sealant has a range of joint widths it can cope with and gaps beyond it need packing or adjusting by the frame installer. Better to raise it at the start than seal a joint that’s bound to fail.

Site and facilities staff are often the first to spot these:

  • A long mastic snag list close to completion
  • Sanitary sealant damaged by following trades
  • Existing joints on a refurb that need cutting out and resealing
  • Oversized or tapered gaps around new frames

For a contractor working at a hospital such as Chichester Centre, 5 miles to the south-west of East Dean, perimeter and facade sealing is planned around patients and deliveries.

Before you book anyone

  • Proof of insurance
  • How long is the guarantee, and what does it include?
  • Their approach to joint depth and backing
  • Their plan for phasing and protecting the area

Our contractor checklist

How the job changes by surface

Snagging before handover

The last pass before handover is where mastic snags are cleared. We can work through the snag list area by area and damaged joints are redone rather than patched.

Internal decorators’ caulk

Acrylic caulk fills internal gaps around trims, boards and frames ahead of decorating. It’s for gaps that stay still and get painted.

When it isn’t the sealant

Some faults sit outside our scope, and we say so rather than covering them up:

  • Specifying the product where the designer hasn’t
  • Frame gaps too wide for sealant, which the installer needs to correct
  • Approving fire stopping as compliant

Not sure which it is? You can call 01277 525 020 or send details through our quote form and we will tell you honestly before you book.

Surfaces we seal

  • Internal decorators’ caulk
  • Sanitary and kitchen joints
  • Brick and block movement joints
  • Window and door perimeters
  • Floor and skirting junctions
  • Cladding and panel joints
Accreditations

Trusted. Accredited. Insured.