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

Potter's Forstal expansion joint sealing

Sealant work in Potter's Forstal for main contractors, managing agents and facilities managers: expansion and movement joint sealing in walls, decks and floors, with a fixed quote first.

  • Leaks through car park deck joints onto the level below
  • Expansion joints filled with dirt and stones
  • Layers of sealant in a movement joint
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
Covering the South East & Scotland
Constructionline member
£5m PL insurance

Expansion joint sealing in Potter's Forstal

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

Common problems we fix in Potter's Forstal

Three-sided adhesion is a common cause of early failure. Bonded on three faces, it can’t stretch evenly when the joint opens, which is why depth control matters.

Things that typically lead to an enquiry:

  • Movement joints with split or torn sealant
  • Damp inside where a wall movement joint has failed
  • Leaks through car park deck joints onto the level below
  • New sealant over old, now failing

In a school such as Egerton Church of England Primary School, movement joints in brick, block and hall floors tend to be forgotten until they leak.

Questions to ask before you book

  • How the joint faces will be prepared and primed
  • What level of public liability insurance do they hold?
  • Is the sealant right for the movement and the substrate?
  • How the existing material will be dealt with

Questions to ask before you appoint anyone

Expansion joint sealing in Potter's Forstal, done properly

Long runs of brick or block have movement joints built in. Once the seal fails, rain reaches the cavity and the joint can no longer close. The old seal is cut away, backing rod goes in at depth, and a low-modulus masonry sealant is gunned and tooled with primer where the maker calls for it. We work on brickwork movement joints, cladding panel joints and car park decks and ramps, and the usual reasons a site gets in touch are new sealant over old, now failing and brittle, chalky sealant on external joints. A specialist sealant contractor works differently from a general builder: in Potter's Forstal, that means joint design, primers and backing rod as standard.

Jobs around smaller places like Potter's Forstal are planned so the whole job is done in one visit. Tell us the joint widths if you can, and what drives or walks over them.

Every job we finish is backed by a 12-month workmanship guarantee. If our installation lets you down in that time, we return and fix it.

Where
Potter's Forstal (TN27)
Region
Kent
Cover
12 months on every job
Quotes
A fixed quote before we start
Phone
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Site staff or a sealant specialist?

Some joints are best left to specialists: for instance fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. A poor seal in places like these tends to cost more to put right later.

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.

What sets the cost

These are the things that shape the price:

  • The size and state of each joint
  • Any access equipment needed
  • The product specified
  • Site requirements such as inductions and permits

Cost follows what’s involved: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a fixed quote.

Before you send an enquiry

A few photos plus some basic facts will normally do. Please tell us:

  • The site address and postcode
  • Access details, including height
  • Clear photographs of the problem areas
  • Your programme or deadline

For a fixed quote, phone 01277 525 020 or use the quote form with the site address and an outline of the work. You can also send details through our quote form.

FAQs: Potter's Forstal

Must our site in Potter's Forstal stop work while the joints are done?

In the majority of cases the site keeps working. Joints are done in phases, a bay, aisle or deck at a time. Tell us which hours and entrances we can use and we’ll plan from there.

Is Potter's Forstal too far out for you?

No. Places such as Potter's Forstal are covered as much as the big towns. London and every South East county are within our area. Where we can, we group nearby jobs to make the most of each trip.

What site paperwork can you supply?

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

Will you come and look before quoting?

Photos, drawings or a schedule are often enough to quote. If the job needs a look first, we will arrange a visit.

Are you CHAS accredited?

Yes. Mastic Doctor is CHAS accredited and a Constructionline member.

What’s the quickest route to a quote?

There are four steps: send details, get a quote, we seal, guaranteed. Step one needs little more than photos and a postcode.

Do you take on small jobs?

Single areas, one-off repairs and whole buildings are all quoted the same way: details, then a fixed price, then sealing, then a 12-month guarantee.

Building owners, agents and FMs in Potter's Forstal

Planned maintenance programmes are welcome: resealing failed joints building by building, on a schedule that suits your budget. Sites in Potter's Forstal can sit alongside others in a wider programme across Kent.

Main contractors use us as their sealant subcontractor, on new build and refurbishment alike. We work to your programme, your specification and your site rules.

Surface by surface

Brickwork and blockwork joints

Vertical movement joints in brick and block walls let the masonry grow and shrink. We use a sealant rated for the movement, normally low-modulus laid over backing rod at the correct depth.

Joints between different materials

Junctions between brick and render, or concrete and cladding, move independently. We choose a sealant that grips both faces, with primer where specified.

Joints that move: notes for Potter's Forstal

The South East is one of the drier parts of the UK. Outside joints in yards and car parks still have to be dry before sealing, and gritting in cold spells finds its way into open joints. Central London is about 41 miles from Potter's Forstal. The roads out of London are lined with trade parks and distribution sheds; their floors carry heavy traffic every shift.

For floors and slabs around Potter's Forstal, the product is chosen for the traffic and the movement at each joint.

Potter's Forstal is about 8 miles north-west of Ashford, in Kent. Looking for expansion joint sealing in Potter's Forstal? We can help, as we do across Kent. 931 places across Kent fall within our area, including Potter's Forstal. We also cover London, around 41 miles from Potter's Forstal.

Anyone looking for expansion joint sealing in TN27 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. Close to Potter's Forstal, our area also takes in Egerton Forstal (1 mile south-east), Pembles Cross (1 mile north), Newland Green (1 mile south-east), Mundy Bois (1 mile south-east) and Egerton (1 mile east). Further afield, our area takes in Maidstone (9 miles north-west), Ashford (8 miles south-east), Sittingbourne (11 miles north), Faversham (12 miles north-east), Kings Hill (14 miles north-west) and Davington (12 miles north-east).

Landmarks near Potter's Forstal

The nearest railway station is Pluckley station, about 2.9 miles south-east. A little further out are Coldbridge Castle (0.8 miles north-west).

Map of Potter's Forstal © OpenStreetMap contributors

Diagnose, treat, sign off

Our CSCS-carded applicators arrive with the sealants, primers and backing rod the job calls for. Joint faces are cleaned back to sound, dry surfaces, primer goes on where the manufacturer specifies it, and the sealant is tooled off neatly. Smaller jobs around Potter's Forstal can be grouped with others nearby, which keeps travel down. 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. Next, we fix a price and confirm the sealant we propose for the movement.
  3. Old sealant and filler are cut out and the joint faces cleaned back to sound material.
  4. Closed-cell backing rod is set to depth, or bond-breaker tape in shallow joints.
  5. Primer goes on where the manufacturer specifies it, followed by the sealant, which is then tooled off.
  6. We check every joint before sign-off, and the work carries our 12-month guarantee.

Preparing the site

  • Agree which areas must stay open
  • Share the asbestos register for older buildings
  • Tell us what induction or permit system the site runs

Request a quote

Tell us about the building, the joints and when you need the work done, and we will put a fixed quote together. To get it moving, give us a call on 01277 525 020 or email the details over.

Get a price

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