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

Construction and new-build mastic in Nash Street, Kent

Mastic packages for new-build and refurbishment projects across Nash Street, by CSCS-carded applicators. Fully insured and CHAS accredited.

  • Missed perimeter joints on a new elevation
  • Frame gaps too wide for sealant alone
  • New external sealant already peeling away
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
London, the South East & Scotland
CHAS accredited
£5m public liability

Construction mastic for Nash Street sites

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

How we handle construction mastic in Nash Street

Getting a subcontractor through site induction should be simple. Our applicators are CSCS-carded, and we are CHAS accredited and a Constructionline member, with public liability insurance in place. RAMS, an insurance certificate and CSCS details can be confirmed with the quote if you tell us what you need. If you have failed sealant in an existing building being refurbished and mastic snags holding up handover, we can put it right. Looking for mastic applicators who cover Nash Street? Mastic Doctor has worked for contractors, FMs and building owners since 2005.

Construction in and around smaller places such as Nash Street 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.

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.

The Mastic Doctor team standing beside their branded vans outside an office building
Where
Nash Street (DA13)
Region
Kent
Cover
12 months on every job
Price
Quoted before any work starts
Telephone
01277 525 020
Last updated
3 November 2026

Why act early in Nash Street

Leaving mastic to whichever trade is fitting the element can look cheaper on paper. The result tends to be uneven finishes and arguments about who should seal what. A single mastic package gives one point of responsibility and a consistent finish. For buildings around smaller places like Nash Street, 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.

What a job costs comes down to the quantity of joints, how much old material needs removing and how the joints are reached. Call for a quote when you’re ready.

Why clients in Nash Street choose us

  • Old sealant cut out, never sealed over
  • Constructionline member
  • Colours confirmed for the specified product
  • Health and safety: CHAS accredited

See our cost guide or how we’re accredited.

What we’re called out for in Nash Street

Most mastic snags on new buildings come from sequencing rather than product. If sealant goes in before the last trades are through, it gets knocked, painted over or contaminated.

Clients normally get in touch after noticing something like this:

  • Sanitary sealant damaged by following trades
  • Snag items on joints that need redoing before handover
  • External joints sealed in damp or cold conditions that are now failing
  • Cracks opening in caulked internal joints

Hospital estates such as Gravesham Community Hospital (to the north of Nash Street) 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.

Questions to ask before you book

  • Can the work be phased to keep areas open?
  • Which product they’ll use, and why it suits the joint
  • Are they CHAS accredited or on Constructionline?
  • Whether old or failed sealant will be cut out, not overlaid

Choosing a commercial sealant contractor

Doing it in-house

Redoing a failed joint normally costs more than getting it right at the outset, because the whole bead must be removed and the faces cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.

There’s also the paperwork. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and our CSCS-carded applicators are used to working under those rules.

FAQs: Nash Street

Is Bowes Industrial Centre, near Nash Street, within your area?

Yes. Estates, retail parks and business parks around Nash Street, Bowes Industrial Centre among them, are all within reach. To start, just ring 01277 525 020 or use the quote form with the unit, the joints involved and your access times.

Will you plan work around the academic year at somewhere like University of Greenwich?

Yes. We plan campus work around teaching, exams and residence turnarounds. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.

Are you CHAS accredited?

Our applicators are CSCS-carded, and we hold CHAS accreditation and Constructionline membership. Tell us what site paperwork you need and we’ll confirm with the quote.

What if there’s asbestos in the old mastic?

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 work stops until any suspect material has been tested. We don’t remove asbestos-containing materials.

Do you have public liability insurance?

Yes. We are fully insured, and the certificate can go with your quote.

Is any job too small?

We quote for single jobs as well as large packages and programmes. Photos and a description are enough to start.

Does weather matter for sealant work?

It can, when the joints are outside. Sealant won’t bond properly to a wet or frosty joint, so we watch the forecast and rearrange outside work if we have to. Indoors, the weather is rarely a problem.

Surface by surface

Window and door perimeters

Inside, a paintable sealant or decorators’ caulk is used where the joint doesn’t move much. We follow what’s specified, and colour-matched products can be used where the frame is on show.

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, and we use a flexible sealant where there’s movement.

Facades, frames and programmes in Nash Street

A 2-mile radius around Nash Street takes in a number of hotels. When hotels extend or refit, the work is typically squeezed between peak periods, mastic included. Nash Street lies roughly 21 miles out from central London. Commuter-belt towns tend to see a steady flow of new flats, offices and commercial schemes, so mastic packages have to keep pace with busy programmes.

When units on a site such as Bowes Industrial Centre, 2.5 miles to the south of Nash Street, are refurbished or reclad, the panel joints and window perimeters are part of the mastic package. Hotel extensions and refits, at places such as Tollgate Hotel (1.4 miles north of Nash Street), normally run between busy periods, so the sealing is squeezed into short windows.

Nash Street is about 3 miles south of Gravesend, in Kent. We cover commercial sites throughout Nash Street, for single jobs and planned programmes alike. Our Kent coverage takes in 931 places. Our London page has more on work in that area (21 miles or so).

Anyone looking for construction mastic in DA13 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. We also cover Round Street (1 mile east), Longfield Hill (1 mile south-west), Meopham (1 mile south), Sole Street (1 mile south-east) and New Barn (1 mile west) for mastic packages. Nearby towns on our patch include Maidstone (12 miles south-east), Dartford (7 miles north-west), Sevenoaks (11 miles south-west), Gravesend (3 miles north), Tonbridge (14 miles south) and Northfleet (3 miles north).

What’s near Nash Street

Locally, jobs take us to sites close to Meopham School and Jeskyns and the streets around them. The closest station to Nash Street is Meopham station, about 0.7 miles south of the centre. Well-known places in the area include Stone Castle (4.7 miles north-west) and Gravesham Community Hospital (3.2 miles north). The countryside around Nash Street includes Sawyers Lake and Gad's Hill.

Map of Nash Street © OpenStreetMap contributors

Diagnose, treat, sign off

Where the site stays busy, the work is phased so only one area is out of use at a time. Each section is protected, cleaned back and sealed, then handed back before the next one starts. For work around Nash Street, we aim to finish in one visit, so photographs and measurements up front really help. Then the right materials arrive with us.

  1. First we look at the scope on site or from drawings.
  2. A fixed quote sets out scope, products and phasing.
  3. Site paperwork is confirmed and our CSCS-carded applicators are inducted.
  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 right away.
  6. The package is closed out, snags cleared and backed by our 12-month guarantee.

Before we start on site

  • Confirm the product named in the specification
  • Send your site hours and access windows
  • Let building users know which areas are affected

Get a fixed quote

Send details, get a quote, we seal, guaranteed: that’s how every job runs. The first step is to ring 01277 525 020 or email the details over with what you know.

Get a quick quote

Read more

Owners, agents and contractors

Whether you’re a managing agent, a property factor or an owner’s representative: send details, get a fixed quote, we seal, guaranteed. Keys, access and contacts can be agreed in advance.

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.

Accreditations

Trusted. Accredited. Insured.