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

Mastic contractors in Knave's Ash

Need construction mastic in Knave's Ash? It’s simple: send details, get a quote, we seal, guaranteed.

  • A mastic package split between trades with no clear owner
  • Caulk cracking where joints are moving more than expected
  • A long mastic snag list close to completion
1
Send details
Drawings, photos, a joint schedule or a site 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
Our workmanship is guaranteed for 12 months.
Covering the South East & Scotland
CHAS & Constructionline
£5m PL insurance

Construction mastic for Knave's Ash sites

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

Surface by surface

Fire-rated sealant where specified

Fire-rated sealant forms part of some packages, installed to the product’s tested detail where it is specified. Fire stopping design belongs to the designer and building control.

Kitchens and utility areas

On commercial kitchen fit-outs, hygienic sealants are often specified. We follow the specification and seal to a smooth, cleanable finish.

About our construction mastic in Knave's Ash

Most of the packages we price run well beyond frames: frame perimeters inside and out, caulking to trims and boards where the specification calls for it, sanitary silicone, kitchens, and the final snag list. Splitting those between trades often leaves gaps in responsibility. We work on window and door perimeters, internal decorators’ caulk and floor and skirting junctions, and the usual reasons a site gets in touch are external joints sealed in damp or cold conditions that are now failing and caulk cracking where joints are moving more than expected. A single leaking joint is often how a building in Knave's Ash first comes to us: we check the joints around it and give you an honest view of what needs doing now and what can wait.

Sites around smaller places like Knave's Ash can be a fair drive from suppliers, so we come with everything the package needs. Send drawings or photographs and the programme and we’ll quote to suit.

Every job ends the same way: guaranteed. You get a 12-month guarantee on our workmanship, and we explain exactly what that covers when we quote.

The Mastic Doctor team beside their liveried vans in front of an office building
Where
Knave's Ash (CT3)
Region
Kent
Guarantee
12 months on every job
Price
Quoted before any work starts
Telephone
01277 525 020
Last updated
3 November 2026

What affects the price in Knave's Ash

Your fixed quote is built from the real scope. It allows for:

  • Travel to remote or island sites
  • The product specified
  • How much existing material needs removing
  • Quantities, in metres or numbers

Access often affects the price as much as the sealing: easy-to-reach joints are quicker than those that need equipment to get to. Mention the access as part of your enquiry.

Details that help us quote

A good diagnosis starts with the right details. Let us know:

  • Specification clauses that apply
  • The site address and postcode
  • Whether an asbestos survey exists
  • When you need the work done

A handful of photographs and a postcode is the fastest way to a quote. Send them through the quote form, or call 01277 525 020 or send photos by email if you’d rather talk the job through.

Questions about Knave's Ash

Can you take on a job at a hospital such as Queen Victoria Memorial Hospital?

Yes. Healthcare sites are among the places we work. We follow the site’s permits, sign-in and infection-control procedures in every area.

Is Knave's Ash too small for you to travel to?

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

What’s the quickest route to a quote?

You can use the quote form on this site; alternatively, ring 01277 525 020 or email drawings and photos. Photos, drawings or a joint schedule help us quote quickly.

Do you seal on top of existing sealant?

No. Sealing over old material is one of the classic causes of early joint failure, so it all comes out first.

Can one quote cover more than one building?

Yes. Several buildings can share a single quote, and you deal with one contact throughout.

How do you choose the sealant?

The specification comes first, if there is one. Without one, the joint decides: its movement, its surfaces and what it has to cope with.

What guarantee comes with a mastic package?

It’s backed by our 12-month guarantee. Keeping other trades off finished joints prevents most problems.

What sealant work can’t fix

Being straight saves everyone time. New sealant won’t cure:

  • Frame gaps too wide for sealant, which the installer needs to correct
  • Specifying the product where the designer hasn’t
  • Joints damaged after sign-off by following trades

If you’re not sure, just call 01277 525 020 or send details through our quote form and we will give you a straight answer before you book.

Where we work in Knave's Ash

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

What happens if it’s left?

Refurbishments sometimes budget for new windows when the frames are sound and only the seal has failed. Sound frames often need only a new perimeter seal, which is a much smaller cost. If the frame is life-expired, we’ll tell you. One visit to deal with every failing joint makes more sense than several trips to a place like Knave's Ash. Send photos of each area and we’ll quote for the lot.

Cost follows what’s involved: stripping out, preparation, sealing, access and phasing. Call for a fixed quote.

What you get with us

  • Health and safety: CHAS accredited
  • Constructionline member for supplier checks
  • 12 months’ guarantee on every job
  • One number for every site we cover

See our cost guide and how we’re accredited.

Owners, agents and contractors

Hotels, schools, healthcare sites, offices and retail units book us directly too. We plan around the way the building is used, so guests, pupils, patients or staff are disturbed as little as possible.

For main contractors, we work as the sealant subcontractor. We work to your programme, your specification and your site rules, with CSCS-carded applicators on site.

Sites and facades in and around Knave's Ash

The sea is no more than about 3 miles from Knave's Ash. Schemes this close to the sea see their facade joints tested by wind and rain from the day they’re sealed, and the sealant, primer and backing need choosing with that in mind. At about 55 miles from central London, Knave's Ash is within reach of the capital. Commuter-belt towns tend to see a steady flow of new flats, offices and commercial schemes, which keeps mastic packages in demand.

University estates such as University of Kent (4.8 miles south-west of Knave's Ash) tend to have a rolling programme of new buildings and refurbishments, each with window perimeters and facade joints to seal. For contractors at a school such as Hoath Primary School, sealing has to be finished before term starts. Hospital estates such as Queen Victoria Memorial Hospital, 2.4 miles to the north of Knave's Ash, 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.

Knave's Ash is about 2 miles south of Herne Bay, in Kent. We cover Knave's Ash and the rest of Kent, with the same fixed quotes and 12-month guarantee as everywhere else. Our Kent coverage takes in 931 places, from busy centres to rural villages. For work in that direction, see our London page.

We take on mastic packages across the CT3 postcode area, whatever the building. We cover commercial and managed buildings on Hicks Forstal Road and Hoath Road. If your building is just outside Knave's Ash, we cover Hoath (1 mile east), Maypole (1 mile north-east), Old Tree (1 mile north-east), Millbank (1 mile north-east) and Hicks Forstal (1 mile west). Further afield, our area takes in Canterbury (5 miles south-west), Margate (10 miles east), Dover (15 miles south-east), Ramsgate (11 miles east), Broadstairs (12 miles east) and Whitstable (5 miles west).

Local landmarks in Knave's Ash

Recent enquiries here include premises near Curtis Wood and Spires Academy. The closest station to Knave's Ash is Herne Bay station, roughly 2.6 miles north-west of the centre. A little further out are St Martins Hospital (4.4 miles south-west). Not far away are West Blean and Thornden Woods.

Map of Knave's Ash © OpenStreetMap contributors

From enquiry to sign-off

We begin with a short walk round with whoever looks after the building, agreeing which joints are in scope, where to start and what must stay open. After that, any old or failed material is removed, each joint is prepared and the new sealant goes in. Smaller jobs around Knave's Ash can be grouped with others nearby, which keeps travel down. A fixed quote is given before anything starts.

  1. First we take quantities off the drawings and read through the specification.
  2. You receive a fixed quote listing scope, products and phasing.
  3. Any site paperwork you need (RAMS, insurance certificate, CSCS details) is confirmed with the quote.
  4. Work follows the programme, area by area, as rooms and elevations become ready.
  5. Each joint is prepared, backed to depth and sealed in the product the specification names.
  6. Before handover, snags are dealt with and the package is signed off under our 12-month guarantee.

Preparing the site

  • Point out any areas we must not close
  • Share your working hours and any access restrictions
  • Explain the parking and delivery arrangements

Get a fixed quote

Quotes are fixed against the scope you send, so the cost is agreed before work starts. To ask for one, call the office on 01277 525 020 or email drawings and photos.

Get a quick quote

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