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

Construction and new-build mastic in Crowhurst, East Sussex

Our CSCS-carded applicators take on mastic packages for new-build and refurbishment projects in Crowhurst and the surrounding area. Send photos or drawings for a fixed quote.

  • Early adhesion failures on new external joints
  • A long mastic snag list close to completion
  • Caulk cracking where joints are moving more than expected
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
CHAS & Constructionline
£5m PL insurance

Construction mastic near Crowhurst

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

General trades versus a specialist

What you see is the finished bead, but most of the work is hidden. Correct depth, the right primer and a sealant matched to the movement are easy to get wrong without experience.

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.

Construction mastic in Crowhurst

Mastic Doctor has been a subcontractor on construction projects for over 20 years. We price from drawings and the specification, agree the sequence with the site team and seal as areas are released. For construction mastic on a scheme in Crowhurst, send drawings through our quote form, or phone or email us to talk it through. We work on window and door perimeters, floor and skirting junctions and brick and block movement joints, and what we are called in for most is inconsistent sealant finishes from plot to plot and frame gaps too wide for sealant alone. A specialist sealant contractor works differently from a general builder: on jobs in Crowhurst, preparation and product choice get the time they need.

Conversions of older rural buildings near smaller places such as Crowhurst bring stone, flint, brick and timber up against new glazing. Those joints need a sealant that suits an uneven, sometimes porous surface, and often a colour chosen for the building.

Every job ends the same way: guaranteed. Our workmanship is backed for 12 months, and the quote explains what it covers.

Mastic Doctor team members lined up next to their branded vans outside an office building
Place
Crowhurst (TN33)
Wider area
East Sussex
Cover
12 months on every job
Quotes
Fixed quote, scope in writing
Call
01277 525 020
Updated
3 November 2026

Different surfaces, different methods

Fire-rated sealant where specified

Fire-rated sealant forms part of some packages, installed to the product’s tested detail where it is specified. The design and sign-off of fire stopping sit with the designer, principal designer or fire engineer; we work to the specification and the manufacturer’s installation guidance.

Kitchens and utility areas

Commercial kitchens often need hygienic or food-safe sealants. Joints are sealed smooth so they’re easy to clean.

On site: what to expect

At the end of each section, the masking comes off, the area is cleaned and every joint is checked with your site contact. If an area should be left alone while the sealant cures, we say how long and put signs out. Smaller jobs around Crowhurst can be grouped with others nearby. A fixed quote is given before anything starts.

  1. We walk the site or review drawings to understand the package.
  2. You receive a fixed quote covering scope, products and sequence.
  3. Site paperwork is confirmed and our CSCS-carded applicators are inducted.
  4. Sealing follows the programme as areas are released.
  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.

Preparing the site

  • Flag any permit to work we’ll need
  • Clear stock, furniture or equipment away from the joints
  • Point out any areas we must not close

Get a fixed quote

The quickest route to a quote is a few photos and the site postcode. Send them through the quote form, or give us a call on 01277 525 020 or email a schedule or drawings if you’d rather talk the job through.

Ask for a quote

Advice

Maintenance after handover

Keep the joints in good shape with a few simple steps:

  • Ask for joint and product checks before the package is urgent
  • Record the products used in the O&M file
  • Allow flexibility for external sealing in damp or cold weather
  • Bring the mastic contractor in after the last trades are through

A new structure shifts as it loses construction moisture. The right product in each joint copes with that, but caulk in a joint that moves more than expected may crack. We can advise if a joint needs a different product.

Sanitary joints that fail early become defects soon after occupation. Leaks behind showers and basins damage finishes and floors, and the repair falls into the defects period. Getting the product and preparation right first time avoids that.

Common problems we fix in Crowhurst

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 stick to the specified product, or put any alternative to you first.

If one of these sounds familiar, it’s time for a closer look:

  • External joints sealed in damp or cold conditions that are now failing
  • Perimeter gaps outside the sealant’s range
  • Window and door perimeters that won’t pass inspection
  • Inconsistent sealant finishes from plot to plot

New wings at hospitals like Bexhill Hospital (2.9 miles south-west of Crowhurst) bring long runs of window and panel joints to seal.

What to look for in a quote

  • How they’ll work around occupants
  • Whether their applicators hold CSCS cards
  • Is depth set with backing rod, or bond-breaker tape in shallow joints?
  • Proof of insurance

Our contractor checklist

What affects the price in Crowhurst

These are the things that shape the price:

  • Site requirements such as inductions and permits
  • Whether old sealant has to be cut out first
  • Which sealant the job calls for
  • Access and working height

The specified product makes a difference, as does the preparation each joint needs. Access, phasing and site rules also count.

What we need to price the job

It doesn’t need to be a full survey. A few details are enough to get going:

  • Photos of the joints, close up and from further back
  • Any specification or named product
  • The type of building and who uses it
  • How the joints are reached, and at what height

Photos, drawings or a schedule of the joints are often enough for a fixed quote. If the job needs a look first, we will arrange a site visit.

Building and refurbishing in Crowhurst

Crowhurst lies roughly 50 miles out from central London. Construction around the commuter belt mixes station-side flats with refurbished offices and units, so mastic packages have to keep pace with busy programmes. Crowhurst is in the South East, one of the UK’s drier regions. That doesn’t stop wet spells, or frosty starts that leave panels too damp to seal, so external mastic is timed for workable conditions and agreed with the site manager.

When a college such as Bexhill 6th Form College (to the south of Crowhurst) builds or refurbishes, the mastic package normally has to fit around students and staff. Older buildings in the area around Crowhurst, such as Durhamford Manor, 3.8 miles north of Crowhurst, need care when sealed: the product has to suit soft or historic materials.

Crowhurst is about 3 miles north-west of Hastings, in East Sussex. We cover commercial sites throughout Crowhurst, whether it’s a single job or part of a planned programme. We work across 308 places in East Sussex. We also cover Brighton, some 28 miles away.

We take on mastic packages across the TN33 postcode area. Streets here include Station Road, Craig Close and Old Forewood Lane. We also cover Green Street (1 mile south-east), Hollington (2 miles south-east), Baldslow (2 miles east), Silverhill (3 miles south-east) and Bulverhythe (3 miles south). Nearby towns on our patch include Eastbourne (12 miles south-west), Bexhill-on-Sea (3 miles south-west), Hailsham (11 miles west), St Leonards (3 miles south-east), Polegate (12 miles west) and Hastings Old Town (4 miles south-east).

What’s near Crowhurst

Recent enquiries here include premises near The Plough Inn and Claverham Community College. Crowhurst has its own railway station: Crowhurst station. Other landmarks nearby include Hastings Castle (4.2 miles south-east) and Bexhill Hospital (2.8 miles south-west). The countryside around Crowhurst includes Church Wood and Robsack Wood and Senlac Hill.

Map of Crowhurst © OpenStreetMap contributors

FAQs: Crowhurst

Can you work on a hospital site such as Bexhill Hospital?

Yes. Healthcare sites are among the places we work. Work is phased so departments keep running, under the site’s own rules.

Is Bexhill Enterprise Park, near Crowhurst, within your area?

Yes, sites like Bexhill Enterprise Park are within our area, along with the rest of Crowhurst. A few photographs and the unit address let us price the work.

Do you work to architects’ specifications?

Yes. Send it with your enquiry, and we will price the work to it, flagging anything that needs clarifying.

Does weather affect external mastic work?

Outside, the joint has to be dry and the temperature within the product’s limits. Damp, frost or condensation on frames can stop work, so internal areas are often done on those days.

Is Crowhurst in your area?

Yes. Sites across Crowhurst are covered, with one number for every area we cover.

What happens if old sealant might contain asbestos?

Asbestos is possible in some older mastics, particularly in buildings from before 2000. 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.

Do you install fire-rated sealant as part of a package?

Fire-rated sealing at service penetrations and linear gaps can be included where specified. Record requirements are confirmed at quote stage.

Accreditations

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