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

Construction and new-build mastic in Highstreet, Kent

Planning work on a mastic package in Highstreet? We assess it, carry out the work and guarantee our workmanship for 12 months.

  • Missed perimeter joints on a new elevation
  • Frame gaps too wide for sealant alone
  • A mastic package split between trades with no clear owner
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Signed off, with 12 months’ guarantee.
South East, London & Scotland
CHAS & Constructionline
£5m PL insurance

Construction mastic for Highstreet sites

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

Construction mastic in Highstreet, done properly

Mastic follows everyone else, which means it absorbs every delay upstream. We agree a sequence at the start and adjust it as the site manager releases areas, so applicators arrive when areas are genuinely ready. That keeps the work right first time and saves rework. We work on internal decorators’ caulk, floor and skirting junctions and brick and block movement joints, and what we’re called in for most is a mastic package split between trades with no clear owner and missed perimeter joints on a new elevation. A specialist sealant contractor works differently from a general builder: in Highstreet, that means joint design, primers and backing rod as standard.

For a site near Highstreet, the mastic visit is planned so the right sealants, primers and backing rod are on hand. Send drawings or photographs and the programme and we will quote to suit.

Our 12-month guarantee is about workmanship, not wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we’re clear about what is covered before work starts.

The Mastic Doctor team standing beside their branded vans outside an office building
Where
Highstreet (ME13)
Region
Kent
Guarantee
12 months on every job
Quote
Quoted before any work starts
Telephone
01277 525 020
Last updated
3 November 2026

How the quote is worked out

Sealant work doesn’t have a standard rate, because every site is different. What we look at:

  • Distance, for remote addresses
  • Removal of failed or old sealant
  • Site requirements such as inductions and permits
  • How much there is to seal

Larger quantities, tricky access or phasing all shape the price. So do site requirements such as inductions and permits.

Sending details for a quote

There’s no need for a formal survey. These details are enough to start:

  • A wide shot and a close-up of the area
  • Where the site is, with the postcode
  • Access details, including height
  • When you need the work done

Let us know the site, the scope and your timescale, and a fixed quote will follow. The easiest way is to call 01277 525 020 or email a schedule or drawings.

Mastic packages on Highstreet sites

The sea is no more than about 2 miles from Highstreet. Schemes this close to the sea see their facade joints tested by wind and rain from the day they’re sealed, so we check the specified product suits the exposure before the first bead. A number of hotels sit less than 2 miles from Highstreet. Hotel refurbishments often run to tight programmes between busy periods, and perimeter and sanitary sealant has to keep up.

Hotels like The Crescent Turner Hotel (to the north-east of Highstreet) rarely close for long, so refurbishment mastic is phased floor by floor. Building work at universities like University of Kent, 3.9 miles south-east of Highstreet, is often timed for the summer, mastic included.

Highstreet is about 3 miles south-west of Whitstable, in Kent. We cover Highstreet, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Highstreet is one of 931 places in Kent on our list for mastic packages. There’s a separate page for London, roughly 48 miles from Highstreet.

Work on mastic packages is covered throughout ME13. If your site is on Thanet Way and Highstreet Road or close by, we can quote for mastic packages. Nearby places we also cover include Waterham (1 mile west), Dargate (1 mile south-west), Seasalter (1 mile north), Hernhill (2 miles south-west) and Slutshole (2 miles south-west). A short drive away, we cover Ashford (14 miles south), Canterbury (5 miles south-east), Sittingbourne (11 miles west), Whitstable (3 miles north-east), Faversham (4 miles west) and Herne Bay (7 miles north-east).

Around Highstreet

Locally, jobs take us to sites close to Foxes Cross Bottom. The closest station to Highstreet is Whitstable station, about 3 miles north-east of the centre. Well-known places in the area include Whitstable and Tankerton Hospital (3.6 miles north-east) and Tankerton Castle (3.3 miles north-east). For a walk, there’s Blean Woods RSPB Reserve.

Map of Highstreet © OpenStreetMap contributors

Surface by surface

External facade and movement joints

Movement joints in the facade are sealed with a product suited to the expected movement. We set the depth with backing rod to avoid three-sided adhesion.

Bathrooms, en suites and washrooms

Across a block of flats or a hotel, sanitary sealing is repeated in every room. One applicator team gives the same finish everywhere.

After the work

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

  • Don’t schedule sealing before decorators and flooring are done
  • Ask cleaners to use soft cloths around fresh sealant
  • Keep product details for future maintenance
  • Plan external elevations with the weather in mind

After we’ve sealed an area, it helps to keep other trades from damaging the joints. Fresh sealant needs its cure time before it’s cleaned, painted near or knocked, and that time depends on the product, temperature and joint depth.

A missed perimeter seal on one window can wet the reveal and the plaster inside. On a new building that means remedial work after decorating and possibly a delayed handover. Checking perimeters before internal finishes go on avoids it.

Our process

A typical day starts with protection: masking tape along the joint edges and sheeting over anything nearby. On site, the work typically takes anything from a day of snagging to several weeks of plot-by-plot sealing on a phased scheme, and we clear our waste as we work. Rural sites near Highstreet may need directions, gate codes or a contact on site. Send that with the details and we will confirm the plan with the quote.

  1. We start with the drawings, specification and programme.
  2. We take off quantities and return a fixed quote.
  3. We agree with the site team which areas come first.
  4. Each area is sealed when it’s released.
  5. Joints are prepared, backed and sealed to the specification.
  6. After snagging, the work is handed over under our 12-month guarantee.

Before we start on site

  • Explain the parking and delivery arrangements
  • Send your site hours and access windows
  • Confirm the product named in the specification

Getting a fixed quote

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

Get a quick quote

Advice

Signs you need construction mastic in Highstreet

Dust is the enemy of adhesion on a construction site. Plaster dust, release agents, protective film residue and damp all stop sealant bonding so faces get cleaned, and primer goes on wherever the maker specifies, even on new work.

Things that typically lead to an enquiry:

  • New external sealant already peeling away
  • A long mastic snag list close to completion
  • Internal caulk splitting as the building dries out
  • Frame gaps too wide for sealant alone

When units on a site such as Waterham Business Park (to the west of Highstreet) are refurbished or reclad, the panel joints and window perimeters are part of the mastic package.

Questions to ask before you book

  • What level of public liability insurance do they hold?
  • Is depth set with backing rod, or bond-breaker tape in shallow joints?
  • How they’ll work around occupants
  • Who will actually carry out the work

How to choose a sealant contractor

Questions we’re asked in Highstreet

Our building in Highstreet is near the coast: does that change the sealant?

It can. Wind-driven rain and, closer to the shore, salt air are harder on external joints. We check the specified product suits the exposure and pay close attention to preparation.

Do you cover business parks and estates near Highstreet, such as Waterham Business Park?

Yes, sites like Waterham Business Park are within our area, along with the rest of Highstreet. Photos and a short description are enough for a first look.

Do you do internal caulk as well as external mastic?

External perimeters and movement joints, internal caulking where specified, sanitary and kitchen joints, plus snagging in one fixed quote.

Do you use the sealant named in the specification?

We follow the specified sealant and flag anything that doesn’t look right for the joint. Specifications often reference BS EN 15651 or BS 6213.

When can the area be used after sealing?

The product and site conditions decide that. Some take light use quickly, others need longer to cure, so we will confirm the curing time on the day.

Can you fit around our programme?

We seal plot by plot or floor by floor as areas are released. The sequence is settled with your site team and updated as the programme moves.

Do you take on multi-site work?

Yes. We take on portfolio and planned maintenance work, with each site phased to suit its occupants.

Honest limits

We check first that sealant really is the fix. It won’t put right:

  • Frames fitted out of tolerance
  • Approving fire stopping as compliant
  • Joints damaged after sign-off by following trades

If you’re not sure, just speak to us on 01277 525 020 or email us and we will give you a straight answer.

Joints and surfaces we work on

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

Trusted. Accredited. Insured.