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

Expansion Joint Sealing in Greatness

Commercial sealant work in Greatness for contractors, FMs and building owners: expansion and movement joint sealing in walls, decks and floors, quoted at a fixed price.

  • Torn sealant in brick or block movement joints
  • Debris jammed in movement joints
  • Previous reseals laid over old sealant
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
London, the South East & Scotland
CHAS & Constructionline
£5m PL insurance

Expansion joint sealing near Greatness

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

Looking after the joints

Once the work is signed off, a little attention goes a long way:

  • Keep scrapers and ploughs from dragging across joint sealant
  • Plan racking layouts so feet don’t land on a joint
  • Keep traffic off new joints until the cure time is up
  • Keep product details with the building records for the next reseal

Add every elevation, deck and floor joint to your inspection round. A periodic look picks up tears and lifting before water gets in, when they’re still cheap to deal with. If anything looks wrong, call the office on 01277 525 020 or email the details over with photographs.

Rain gets into walls through torn brick and block movement joints. The first sign is often a damp patch indoors, well after the seal first opened. Catching it early keeps the water outside.

Expansion joint sealing for commercial buildings in Greatness

We have been sealing expansion and movement joints for over 20 years, for main contractors, FMs, managing agents and building owners. Our applicators are CSCS-carded, we are CHAS accredited and a Constructionline member, and we carry five million pounds of public liability insurance. Each job is backed by a 12-month guarantee on the workmanship. If you are dealing with new sealant over old, now failing and rain penetration at brick or block movement joints, we can help, on precast concrete panel joints, cladding panel joints and blockwork control joints alike. Looking for mastic applicators who cover Greatness? Mastic Doctor has worked for contractors, FMs and building owners since 2005.

Small units near places like Greatness are often converted farm buildings with new concrete floors. Saw-cut and construction joints in those floors need the right filler or sealant for the forklifts and trolleys that use them.

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 spell out the cover before we begin.

The Mastic Doctor team beside their liveried vans in front of an office building
Location
Greatness (TN13, TN14, TN15)
Wider area
Kent
Guarantee
A 12-month guarantee
Quote
A fixed quote before we start
Call
01277 525 020
Last updated
3 November 2026

Greatness: questions and answers

Do you cover business parks and estates near Greatness, such as Bat & Ball Enterprise Centre?

Yes. We cover Greatness and the area around it, including industrial estates, business parks and retail parks such as Bat & Ball Enterprise Centre. Photos and a short description are enough for a first look.

Is Greatness too small for you to travel to?

Not at all. Greatness is within our area. We cover Greater London and the counties of the South East. Good photographs up front let us bring everything on the first visit.

Can you work to our specification?

Yes. The specification and the manufacturer’s installation guidance are what we work to, and any queries are raised before we start.

Will you come and look before quoting?

Many jobs can be quoted from photographs, drawings or a joint schedule. If the job needs a look first, we will arrange a visit before quoting.

What sealant do you use in movement joints?

Whatever suits the joint and the specification. The quote states the sealant and its movement class, so you know what’s going in.

Do you have public liability insurance?

Yes. We are fully insured, including public liability cover.

Do you take on small jobs?

Single areas, one-off repairs and whole buildings are all quoted the same way: send details, get a fixed quote, we seal, guaranteed.

Traffic, movement and joints around Greatness

Greatness lies roughly 19 miles out from central London. The roads out of London are lined with trade parks and distribution sheds; their floors carry heavy traffic every shift. Less than 3 miles from Greatness there are at least three named estates and business parks. Sites like these are full of saw-cut floor joints, yard slabs and car park joints.

Business parks such as Bat & Ball Enterprise Centre (under half a mile north-west of Greatness) have car parks, paved areas and long brick and panel elevations, all with movement joints. Schools like St John's Church of England Primary School often have long brick elevations with movement joints that age quietly.

Greatness is about 1 mile north-east of Sevenoaks, in Kent. Anywhere in TN13, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. Across Kent, 931 places are covered, Greatness among them. There’s a separate page for London, roughly 19 miles from Greatness.

Work on movement joints is covered throughout TN13, TN14 and TN15. For a building on Seal Road, Mill Lane and Sandy Lane or nearby, send details and we’ll quote for movement joints. Close to Greatness, our area also takes in Seal (1 mile east), Godden Green (2 miles south-east), Styants Bottom (3 miles east), Bitchet Green (3 miles south-east) and Stone Street (3 miles south-east). Bigger towns within reach include Maidstone (14 miles east), Dartford (11 miles north), Royal Tunbridge Wells (11 miles south), Gravesend (12 miles north-east), Tonbridge (7 miles south-east) and Northfleet (12 miles north-east).

Local landmarks in Greatness

We work on buildings around The Old Bat and Ball pub, Wildernesse School and Knole Academy, among other places. There’s a railway station in Greatness itself: Bat & Ball station. Nearby you will also find Sevenoaks Museum (1.3 miles south) and Kemsing Castle Bank (1.7 miles north-east). Green spaces nearby include Dryhill Nature Reserve.

Map of Greatness © OpenStreetMap contributors

What sealant work can’t fix

A few problems need another trade or a different fix, and we point that out rather than sealing over them:

  • Mechanical expansion joint covers, cover plates or proprietary joint systems (a specialist supplier’s job)
  • Structural movement beyond what the joints were designed for (that needs a structural engineer)
  • Changing the joint layout or spacing of a structure

Not sure which it is? You can call 01277 525 020 or email the details over and we will tell you honestly before you book.

What we seal

  • Brickwork movement joints
  • Blockwork control joints
  • Car park decks and ramps
  • Podiums and floor movement joints
  • Precast concrete panel joints
  • Cladding panel joints

Different surfaces, different methods

Podium joints

Podiums take foot traffic, planters and weather. We choose a product that copes with feet, wheels and weather.

Internal floor movement joints

Forklift and pallet-truck wheels break unsupported joint edges. We match the product to the traffic and the movement, and tell you if edges need repairing first.

When to call us in Greatness

When a bead pulls away from one face, it has lost adhesion. Poor preparation, a skipped primer, or sealant bonded to the back of the joint are typical reasons.

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

  • Spalled or broken joint edges in floors and decks
  • Torn sealant in brick or block movement joints
  • Joints where the bead has lost adhesion
  • Water dripping through deck or ramp joints

At places like Sevenoaks Business Centre, under half a mile to the west of Greatness, joints are sealed a section at a time so operations carry on.

Comparing quotes

  • How the existing material will be dealt with
  • Their plan for phasing and protecting the area
  • What level of public liability insurance do they hold?
  • The terms of the workmanship guarantee

Questions to ask before you appoint anyone

Why deal with it now?

Spot repairs can be useful on a tight budget. The remaining sealant is often close to failing too and repeated access costs add up. Where it helps, we quote both options. Small buildings around Greatness suffer from failed joints as much as large ones. Early resealing avoids the damage that follows a leak.

Pricing movement joints depends on how many there are, their condition and the access. Call for a quote.

What you get with us

  • Fully insured
  • Colours confirmed for the specified product
  • One contact handling all your sites
  • Over 20 years of commercial sealing

Read our cost guide and our accreditations.

How a job runs

Working in a building that stays open takes some planning. The work area is signed and kept contained, keep walkways clear and work section by section so the rest of the building stays in use. Work in places the size of Greatness is planned as a single visit where we can. Clear photographs and measurements help us bring the right products.

  1. Photos, joint lengths and drawings come to us, or we visit.
  2. Joint widths and expected movement are checked against what the sealant can take.
  3. Old sealant and debris are cut out of every joint.
  4. Edges are checked, and we tell you if any need repairing before sealing.
  5. A sealant suited to the movement and traffic is laid to depth and tooled.
  6. Areas reopen once cured, and the work carries our 12-month guarantee.

Preparing the site

  • Send asbestos survey details if the building is pre-2000
  • Explain the parking and delivery arrangements
  • Tell us what induction or permit system the site runs

Request a quote

Send us photographs, drawings or a joint schedule and a fixed quote comes back to you. Where a site visit makes more sense, we’ll arrange one.

Get a price

Related advice

Accreditations

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