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

Herne Bay expansion joint sealing

Commercial sealant work in Herne Bay for contractors, FMs and building owners: expansion and movement joint sealing in walls, decks and floors, with a fixed quote first.

  • Chipped joint edges on forklift routes
  • Car park joints leaking onto vehicles below
  • Sealant peeling off one face of the joint
1
Send details
Send the specification, photos or a marked-up plan.
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.
South East, London & Scotland
CHAS accredited
£5m public liability

Expansion joint sealing in Herne Bay

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

Expansion joint sealing for commercial buildings in Herne Bay

If you need expansion joint sealing in Herne Bay, start with photographs and joint lengths. Send them through our quote form, and we will arrange a site visit if needed, then send a fixed quote that names the sealant. To discuss the joints first, phone 01277 525 020 or email the details over. We work on brickwork movement joints, blockwork control joints and podiums and floor movement joints, and what we’re called in for most is weathered movement joint sealant that no longer flexes and layers of sealant in a movement joint. A single leaking joint is often how a building in Herne Bay 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.

Towns such as Herne Bay typically have an industrial estate or a few business units, with warehouse floors and loading areas. Smaller units can’t stop work for long, so we plan around the occupier’s hours.

We sign every job off with a 12-month guarantee. It’s a plain promise: if our work fails within that year, we put it right.

Where
Herne Bay (CT6)
Wider area
Kent
Cover
A 12-month guarantee
Quote
Fixed quote, scope in writing
Telephone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Diagnose, treat, sign off

We follow your site rules from the start: sign-in, induction and whatever permit system the building uses. With the paperwork done, we take the joints in the sequence agreed with you, and each area is checked before we leave it. If you have more than one building in Herne Bay, they can often be done on the same visit. Tell us when the building is open and we will plan to suit.

  1. We assess the joints on site or from photographs, noting widths and how each has failed.
  2. A fixed quote names the sealant we propose and its movement class.
  3. Phasing is agreed so decks, floors or entrances can stay in use where needed.
  4. We strip the old sealant or filler and prepare each face until it’s sound and dry.
  5. Depth is controlled with backing, the faces are primed where the maker calls for it, then the bead is laid and tooled.
  6. We check each joint with you, confirm the cure time and sign off under our 12-month guarantee.

Before we start on site

  • Arrange parking or a loading space
  • Move anything stored against the joints
  • Flag any permit to work we will need

Quotes

Tell us about the building, the joints and when you need the work done, and we will put a fixed quote together. The easiest way is to ring 01277 525 020 or email the details over.

Get a quick quote

Advice

Floors, slabs and movement joints in Herne Bay

With the shore within about 1 mile, Herne Bay counts as a coastal location. Open joints in coastal car parks and yards let in salt-laden water as well as grit, which is why split joints are worth sealing before the edges deteriorate. Herne Bay sits in one of the drier corners of the country, the South East. External slab and deck joints still need a dry, clean joint to seal, and winter de-icing salt on car parks and ramps works into any open joint.

Business parks such as Eddington Business Park, 0.6 miles to the south-west of Herne Bay, have car parks, paved areas and long brick and panel elevations, all with movement joints. Phasing is what makes joint work possible on busy sites such as St. Augustine's Business Park (2.5 miles west of Herne Bay): one bay, aisle or car park row at a time. For a school such as Herne Bay Junior School, playground and building joints can be done in the holidays.

Herne Bay is about 7 miles north of Canterbury, in Kent. Commercial clients in Herne Bay can call on us for movement joints. We work across 931 places in Kent. There’s a separate page for London, about 54 miles away.

If you need expansion joint sealing in CT6, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. Streets here include High Street, Viscount Square and Market Street. You’ll find Herne Bay on or near the A299 and B2205. If your building is just outside Herne Bay, we cover Hunters Forstal (1 mile south-east), Eddington (1 mile south-west), Broomfield (1 mile south-east), Herne (1 mile south) and Beltinge (1 mile east). Further afield, our area takes in Canterbury (7 miles south), Margate (11 miles east), Ramsgate (12 miles east), Broadstairs (13 miles east), Whitstable (5 miles west) and Deal (15 miles south-east).

Local landmarks in Herne Bay

In Herne Bay, that means premises near Herne Bay High School, Queen's Head Public House and Curtis Wood, among other places. Herne Bay’s nearest station is Herne Bay station, roughly 0.7 miles west of the centre. Other landmarks nearby include Tankerton Castle (4.3 miles west) and Whitstable and Tankerton Hospital (3.6 miles west). For a walk, there’s West Blean and Thornden Woods.

Map of Herne Bay © OpenStreetMap contributors

What the job involves on each surface

Car park decks and ramps

Water coming through deck joints is the usual first sign. We strip the old seal, prepare the edges and seal again, and we’ll tell you if any edges need repairing first.

Brickwork and blockwork joints

A brick movement joint full of old mortar or debris can’t close. We clear the joint fully before sealing.

What we can’t put right

Being straight saves everyone time. Fresh joints won’t solve:

  • Crumbling edges that would give a new bead nothing sound to grip
  • Changing the joint layout or spacing of a structure
  • Leaks coming from the membrane rather than the joint seal

Not sure which it is? You can ring 01277 525 020 or email a schedule or drawings and we’ll tell you honestly.

Surfaces we seal

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

Site staff or a sealant specialist?

General builders and handymen seal joints, but it isn’t their main trade. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint.

Using site staff can make sense for a small touch-up, but larger jobs are different: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.

Leave it or put it right?

A like-for-like reseal of a joint that keeps splitting rarely lasts. If the joint is too narrow or the product wrong for the movement, it needs a different approach. Many buildings in towns like Herne Bay have been extended or altered, and joints where old meets new tend to fail first. Resealing them early protects the building behind.

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

Why choose Mastic Doctor in Herne Bay

  • Old sealant cut out, never sealed over
  • Fully insured
  • Colour options checked against the specified product
  • Matching to RAL references, product permitting

Read what affects the cost or our accreditations and insurance.

Aftercare for building managers

Cleaning and maintenance staff play a part too. Share these points with them:

  • Keep stones and debris out of open joint lines
  • Treat a small split as a warning, not a cosmetic issue
  • Check joints after long freezing spells
  • Keep scrapers and ploughs from dragging across joint sealant

On car parks, winter clearance can damage deck joint sealant. Lifting the blade at each joint avoids tearing the bead, and it’s worth checking joints once the cold weather has passed.

Joints sealed at the same time generally fail around the same time. It pays to check every joint, not just the obvious one. We’ll tell you which movement joints need doing now and which can wait.

FAQs: Herne Bay

Do you cover business parks and estates near Herne Bay, such as Eddington Business Park?

Yes. Estates, retail parks and business parks around Herne Bay, Eddington Business Park among them, are all within reach. A few photographs and the unit address let us price the work.

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

It can. Driven rain and salt are tougher on outside sealant than sheltered inland conditions. Product choice and preparation matter more, and sea-facing elevations are worth inspecting more often.

What sealant do you use in movement joints?

We choose a sealant with a movement capability that suits the joint as set out in BS EN ISO 11600. Where two different materials meet, a hybrid sealant can be the better choice.

How do you choose the sealant?

The specification comes first, if there is one. If there isn’t one, it comes down to the joint: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.

Do you work to architects’ specifications?

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

Do your applicators hold CSCS cards?

Yes. Should the site need card details in advance, tell us and we will confirm them with the quote.

Can you work while the building is occupied?

Typically, yes. Phased work can be planned so areas stay in use, with each area protected and signed.

Accreditations

Trusted. Accredited. Insured.