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

Expansion and movement joint sealing in Hernhill, Kent

Expansion and movement joint sealing in walls, decks and floors in Hernhill. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.

  • Brittle, chalky sealant on external joints
  • Debris jammed in movement joints
  • Torn sealant in brick or block movement joints
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
CHAS accredited
£5m PL insurance

Expansion joint sealing across Hernhill

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

Our process

At the end of each section, we remove the tape, clean down and inspect every joint. Where the sealant needs time to cure before use, we tell you and sign the area. Rural sites near Hernhill may need directions, gate codes or a contact on site. Add it to your enquiry and we will build it into the plan.

  1. We assess the joints on site or from photographs, noting widths and how each has failed.
  2. You receive a fixed quote stating the product and the movement it is rated for.
  3. Where areas have to stay open, we agree a phased sequence before starting.
  4. The failed seal is cut out and both joint faces cleaned back to sound material.
  5. Backing rod or bond-breaker sets the depth, primer goes on where specified, and the sealant is applied and tooled.
  6. We check each joint with you, confirm the cure time and sign off under our 12-month guarantee.

What we need from you

  • For older buildings, check the asbestos register before work
  • Send any specification or drawings in advance
  • Arrange parking or a loading space

Getting a fixed quote

Pricing a project or setting a maintenance budget? Send the scope and any drawings, and we will return a fixed quote that you can work with. If you have questions first, call the office on 01277 525 020 or use the quote form.

Ask for a quote

Related advice

Expansion joint sealing in Hernhill, done properly

Our movement joint work takes in walls, panels, decks and floors: vertical joints in brick and block facades, joints between precast or cladding panels, concrete slab and deck joints, ramps, podiums and internal floors. Every one calls for a sealant picked for its movement, exposure and traffic. We work on blockwork control joints, cladding panel joints and podiums and floor movement joints, and what we are called in for most is brittle, chalky sealant on external joints and torn sealant in brick or block movement joints. Looking for mastic applicators who cover Hernhill? We’ve been sealing commercial buildings since 2005, with CSCS-carded applicators.

Smaller community and commercial buildings around Hernhill have their own movement joints in walls and floors. They tend to be overlooked until something leaks or cracks.

What our 12-month guarantee covers is the way we did the job: preparation, application and finish. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.

Location
Hernhill (ME13)
Region
Kent
Guarantee
12 months on our workmanship
Quote
Fixed quote, scope in writing
Telephone
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

What we are called out for in Hernhill

Car park decks and floors face loads that walls never see. Tyres and wheels press on the edges and the sealant, while grit and salts work into any gap. A sealant that isn’t trafficable won’t last there.

Typical triggers for a call:

  • Rain penetration at brick or block movement joints
  • Debris jammed in movement joints
  • Layers of sealant in a movement joint
  • Sealant pulling off the joint face

Large sites such as Whitstable and Tankerton Hospital, 5.3 miles to the north-east of Hernhill, have car parks, service roads and long elevations with movement joints in brick and panels.

What to look for in a quote

  • Will RAMS and insurance details be available?
  • Their pre-qualification and accreditations
  • How the existing material will be dealt with
  • How long is the guarantee, and what does it include?

Questions to ask before you appoint anyone

Honest limits

A few problems need another trade or a different fix, and we say so rather than covering them up:

  • Broken or spalled joint edges, which need repairing before any sealant goes in
  • Structural movement beyond what the joints were designed for (that needs a structural engineer)
  • Failed waterproofing membranes on podiums, roofs or decks (a waterproofing specialist’s job)

If you’re not sure, just call the office on 01277 525 020 or email drawings and photos and we’ll give you a straight answer.

Where we work in Hernhill

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

Commercial clients in Hernhill

We work for building owners and managing agents on everything from one building to a spread of sites. One quote can cover more than one site, which keeps the paperwork simple.

Housing associations and managing agents often need work done across blocks and communal areas. We phase the work so people keep access, and each stage is agreed with your contact.

Leave it or put it right?

Spot repairs can be useful on a tight budget. But if the rest of the run is the same age and product, it’s usually not far behind. Where it helps, we quote both options. Older rural buildings around Hernhill move with the seasons, and rigid or tired sealant can’t keep up. The right product, sized to the joint, copes much better.

The product called for affects the cost, as does the preparation each joint needs. Access, phasing and site requirements come into it too.

Why clients in Hernhill choose us

  • Matching to RAL references, product permitting
  • Public liability insurance in place
  • Constructionline member for supplier checks
  • Joints cleaned back to sound surfaces

See our cost guide and our accreditations.

Questions we are asked in Hernhill

Is a smaller place like Hernhill outside your area?

Not at all: smaller places are covered as well as towns. London and every South East county are within our area. Send photographs and a list of what needs doing, and we will plan the job to need as few trips as possible.

Does the sea air around Hernhill change the choice of sealant?

It can. Wind-driven rain and, closer to the shore, salt air are harder on external joints. We choose the product for the exposure, prime where the manufacturer requires it and size the joint for its movement.

What guarantee do you give on joint sealing?

It’s backed by our 12-month guarantee. Tell us straight away if a joint we sealed gives trouble in that time.

What’s the difference between an expansion joint and a movement joint?

The general name is movement joint, and expansion joint is one common type. In everyday use the two names are often swapped.

How do you deal with asbestos in old sealant?

Managing asbestos is the dutyholder’s responsibility, so for older buildings we ask for the asbestos register first. If anything suspect turns up, we stop until it’s tested.

Do the joint edges need to be sound before sealing?

A bond is only as strong as the material behind it, so we will tell you if the edges need repairing before sealing. Where it’s visible beforehand, we will say so when we quote.

Can you send site paperwork?

Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote.

General trades versus a specialist

For most general trades, sealant is a sideline. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint, which is what makes a joint last.

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.

Warehouse floors and decks around Hernhill

With the shore within about 3 miles, Hernhill counts as a coastal location. Open joints in coastal car parks and yards let in salt-laden water as well as grit, so a failed joint lets more in and the edges break up sooner. Hernhill is in the South East, one of the UK’s drier regions. Even so, yard and car park joints are only sealed when they’re dry and clean, and gritting in cold spells finds its way into open joints.

Schools such as Hernhill Church of England Primary School have movement joints in their walls and floors that are easy to overlook. Office parks like Waterham Business Park, 1.5 miles to the north-east of Hernhill, have decks, ramps and clad elevations whose joints take movement every day.

Hernhill is about 3 miles east of Faversham, in Kent. Looking for expansion joint sealing in Hernhill? We can help, as we do across Kent. We work across 931 places in Kent, large and small. For work in that direction, see our London page.

Work on movement joints is covered throughout ME13. Nearby places we also cover include Slutshole (1 mile south-west), Staplestreet (1 mile south-west), Dargate (1 mile north-east), Culmers (1 mile north-west) and Goodnestone (1 mile north-west) for movement joints. Nearby towns on our patch include Ashford (12 miles south), Canterbury (6 miles east), Sittingbourne (10 miles west), Whitstable (4 miles north-east), Faversham (3 miles west) and Herne Bay (8 miles north-east).

Around Hernhill

We work on buildings around Red Lion pub and Mount Ephraim Gardens and the streets around them. Hernhill’s nearest station is Selling station, roughly 2.3 miles south-west of the centre. A little further out are Chilham Castle (4.5 miles south) and Whitstable and Tankerton Hospital (5.3 miles north-east). The countryside around Hernhill includes Blean Woods RSPB Reserve.

Map of Hernhill © OpenStreetMap contributors
Accreditations

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