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

Expansion joint sealing in Thurnham

Expansion and movement joint sealing in walls, decks and floors across Thurnham, by CSCS-carded applicators. CHAS accredited and fully insured.

  • Sealant peeling off one face of the joint
  • Water getting into the wall through a failed joint
  • Spalled or broken joint edges in floors and decks
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
12-month guarantee on our workmanship.
Covering the South East & Scotland
Constructionline member
£5m public liability

Expansion joint sealing in Thurnham

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

Different surfaces, different methods

Joints between different materials

Different materials meeting at a joint rarely move in step. We choose a sealant that grips both faces priming where the maker calls for it.

Concrete and precast panel joints

Precast and concrete panel joints move daily. We use a sealant classed for the movement, laid over backing to depth.

Expansion joint sealing in Thurnham

We have been sealing expansion and movement joints for over 20 years for contractors, facilities managers and owners. CHAS accredited, Constructionline member, CSCS-carded applicators and five million pounds of public liability insurance. Workmanship is backed by our 12-month guarantee. We work on precast concrete panel joints, podiums and floor movement joints and blockwork control joints, and the usual reasons a site gets in touch are sealant pulling off the joint face and joints packed with grit and debris. Looking for mastic applicators who cover Thurnham? Mastic Doctor has worked for contractors, FMs and building owners since 2005, with CSCS-carded applicators.

For a site near Thurnham, measurements and photos up front mean one trip where possible, with the right materials on hand. Note joint widths and the traffic that uses them, and we will take it from there.

Every job we finish is backed by a 12-month workmanship guarantee. If a joint we sealed fails because of how it was installed, we come back and put it right.

Location
Thurnham (ME14)
Wider area
Kent
Guarantee
12 months on our workmanship
Quotes
Quoted before any work starts
Telephone
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Why act early in Thurnham

A failed joint seal doesn’t mean the slab, panel or wall needs replacing. Where the edges are sound, cutting out and resealing is enough. We will flag where edges need repair before sealing. Around Thurnham, it’s better to renew all the failing joints at once. Photos of every joint help us quote for the whole job.

Quantities, awkward access and phased working all shape the price. So do site requirements such as inductions and permits, along with the time of year for external work.

What you get with us

  • 12 months’ guarantee on every job
  • Old sealant cut out, never sealed over
  • A fixed quote before work starts
  • CSCS-carded applicators

Read what affects the cost and our accreditations and insurance.

Quoting for work in Thurnham

There’s no standard rate for sealant work, because every site is different. What we look at:

  • The product specified
  • Whether old sealant has to be cut out first
  • Location, for remote and island sites
  • Access and working height

The product called for affects the cost, as does the preparation each joint needs, such as cutting out, priming or new backing rod. Access, phasing and site rules also count.

Sending details for a quote

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

  • The type of building and who uses it
  • Anything awkward about access or site hours
  • Your programme or deadline
  • Asbestos survey details if the building is older

The quickest route to a quote is a few photos and the site postcode. Upload them with the quote form, or phone 01277 525 020 or email us to discuss it first.

On site: what to expect

Tell us your site hours and access windows and we will plan around them. While we’re working, the area stays contained and tidy, and we check in with your contact before moving on to each new area. Smaller jobs around Thurnham can be grouped with others nearby. A fixed quote is given before anything starts.

  1. The first job is to check each joint: how wide it is, how it moves and why the old seal let go.
  2. You get a fixed quote with the product and its movement capability stated.
  3. We strip out the old seal and prepare the faces, flagging any broken edges that need repair before sealing.
  4. Closed-cell backing rod is set to depth, or bond-breaker tape in shallow joints.
  5. Where the maker calls for primer, it’s applied first, then the bead goes in and is tooled to a concave finish.
  6. Finished joints are checked and backed by our 12-month guarantee.

Before we start on site

  • For older buildings, check the asbestos register before work
  • Confirm the product named in the specification
  • Let building users know which areas are affected

Quotes

If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price against exactly what is specified. Smaller jobs need nothing more than photographs and a few notes.

Get a price

Advice

Questions we’re asked in Thurnham

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

Yes, healthcare and care buildings are part of our work. Each area is agreed with the ward or department and the estates team in advance.

Is Thurnham too small for you to travel to?

Not at all: smaller places are covered as well as towns. Our area covers London and the South East counties. Where we can, we group nearby jobs to make the most of each trip.

Which sealant will you use?

Where there’s a specification, we use the product it names. If not, we choose for the movement, the surfaces and the conditions, in line with the manufacturer’s guidance.

Do you guarantee expansion joint work?

The 12-month guarantee applies to the workmanship. Tell us straight away if a joint we sealed gives trouble in that time.

How long before the joints can be used?

We will confirm how long the chosen product needs to cure.

Can you seal joints in cold or wet weather?

Sealant needs a dry joint and a temperature within the product’s range. Frost, rain and condensation on steel or concrete can hold up external work.

How long will the new sealant last?

There isn’t a single answer, since movement, weather, cleaning and use all affect it. Regular checks let you plan resealing before leaks or damage.

Joints that move: notes for Thurnham

Thurnham is in the South East, one of the UK’s drier regions. Outside joints in yards and car parks still have to be dry before sealing, and winter de-icing salt on car parks and ramps works into any open joint. Thurnham is about 33 miles from central London. The roads out of London are lined with trade parks and distribution sheds; their floors carry heavy traffic every shift.

Large sites such as KIMS Hospital (1.4 miles west of Thurnham) have car parks, service roads and long elevations with movement joints in brick and panels. For a centre such as The Mall Maidstone, 2.9 miles south-west of Thurnham, the service yard and car park joints usually need attention first. Schools like Valley Park School often have long brick elevations with movement joints that age quietly.

Thurnham is about 3 miles north-east of Maidstone, in Kent. Any commercial site in Thurnham is covered. 931 places across Kent fall within our area, including Thurnham. We also cover London, some 33 miles away.

Postcode districts covered here: ME14. Streets here include Thurnham Lane, Aldington Lane and Pilgrims Way, and sites on any of them can send details for a fixed quote. Close to Thurnham, our area also takes in Detling (1 mile north-west), Bearsted (1 mile south-west), Weavering (2 miles south-west), Grove Green (2 miles west) and Harbourland (2 miles west). A short drive away, we cover Maidstone (3 miles south-west), Sittingbourne (7 miles north-east), Gravesend (13 miles north-west), Tonbridge (15 miles south-west), Faversham (13 miles east) and Northfleet (14 miles north-west).

Near you in Thurnham

Around Thurnham, our work takes us to commercial buildings near White Horse Wood and Black Horse Public House, among other places. The nearest railway station is Bearsted station, roughly 1.1 miles south-west of the centre. Nearby you will also find Allington Castle (3.3 miles west) and KIMS hospital (1.4 miles west). The countryside around Thurnham includes Detling Hill.

Map of Thurnham © OpenStreetMap contributors

When it isn’t the sealant

Honesty saves time and money. Fresh joints won’t solve:

  • Waterproofing layers buried beneath the sealant
  • Mechanical expansion joint covers, cover plates or proprietary joint systems (a specialist supplier’s job)
  • Movement on a scale no sealant is meant to absorb

If in doubt, ring 01277 525 020 or use the quote form and we will say what we think.

What we seal

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

When to bring in a specialist

What you see is the finished bead, but most of the work is hidden. Backing rod, primer where specified and a joint designed to move with the building are where general trades tend to cut corners.

General builders and handymen seal joints, but it isn’t their main trade. A specialist prepares properly, controls joint depth and picks a product with the right movement class.

Accreditations

Trusted. Accredited. Insured.