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

Floor Joint Sealing contractors in New Ash Green

Floor joint sealing and filling in warehouses, factories and industrial units across New Ash Green, carried out by CSCS-carded applicators. CHAS accredited and fully insured.

  • A gap opening alongside old joint filler
  • Unfilled floor joints collecting dirt and grit
  • Broken arrises where pallet trucks cross
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
12-month guarantee on our workmanship.
South East, London & Scotland
Constructionline member
£5m public liability

Floor joint sealing for businesses in New Ash Green

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

How we handle floor joint sealing in New Ash Green

We have been sealing commercial joints since 2005. Our CSCS-carded applicators follow your site induction and rules, and the business is CHAS accredited and a Constructionline member, with public liability insurance in place. Completed joints come with a 12-month guarantee on our workmanship. We work on forklift and pallet-truck routes, construction joints and joints along racking aisles, and what we’re called in for most is open saw cuts full of debris and a gap opening alongside old joint filler. Facilities teams, main contractors and managing agents in New Ash Green tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

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

Every job ends the same way: guaranteed. Our workmanship is backed for 12 months, and we explain exactly what that covers when we quote.

Mastic Doctor team members lined up next to their branded vans outside an office building
Where
New Ash Green (DA3, TN15)
Wider area
Kent
Cover
12 months on our workmanship
Quotes
A fixed quote before we start
Call
01277 525 020
Updated
3 November 2026

Slabs, ramps and loading bays in New Ash Green

New Ash Green has at least three named business or industrial parks inside a 3-mile radius. Floors, loading bays and yards on sites like these are where floor and movement joints work hardest. Central London is about 20 miles from New Ash Green. Distribution warehouses and industrial estates are common around the motorway corridors that serve the capital.

Across sites such as Bowes Industrial Centre, 2.1 miles east of New Ash Green, floor and movement joints can be sealed in phases so units keep working. Schools like New Ash Green Primary School often have long brick elevations with movement joints that age quietly.

New Ash Green is about 5 miles south of Northfleet, in Kent. If you’re looking for floor joint sealing in New Ash Green, we can help, as we do across Kent. New Ash Green is one of 931 places we cover in Kent for floor joints. Our London page has more on work in that area (20 miles or so).

We cover the DA3 and TN15 postcode districts for floor joints. Buildings on Church Road, Upper Street North and Upper Street South are within our area. Sites close to New Ash Green are covered too, including Ridley (1 mile south-east), Hartley (1 mile north), New Street (2 miles south-east), Hodsoll Street (2 miles south-east) and Longfield Hill (2 miles north-east). Nearby towns on our patch include Maidstone (12 miles south-east), Dartford (6 miles north-west), Sevenoaks (8 miles south-west), Gravesend (5 miles north-east), Tonbridge (12 miles south) and Northfleet (5 miles north).

Near you in New Ash Green

Locally, jobs take us to sites close to The White Swan Public House, Longfield Academy and Rectory Meadow. New Ash Green’s nearest station is Longfield station, roughly 2.1 miles north. Well-known places in the area include Eynsford Castle (4 miles west) and Darent Valley Hospital (5.2 miles north-west).

Map of New Ash Green © OpenStreetMap contributors

New Ash Green: questions and answers

Does your area include sites such as Heaver Farm Trading Estate, near New Ash Green?

Yes. Estates, retail parks and business parks around New Ash Green, Heaver Farm Trading Estate among them, are all within reach. Photos and a short description are enough for a first look.

Is New Ash Green too small for you to travel to?

No. Places such as New Ash Green are covered as much as the big towns. We work across Greater London and the South East. Send photos and a list of what needs doing, and we will plan the job to need as few trips as possible.

Can the warehouse stay open while you work?

We phase it. Areas are taken out of use a section at a time around the site hours and access windows you give us.

Which is better for warehouse joints, filler or sealant?

It depends on the traffic and the movement. Forklift routes generally call for a semi-rigid filler that holds the arrises, while joints that move more take a flexible sealant.

What if there’s asbestos in the old mastic?

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.

How long does a job like this take?

That varies with the scale of the job, though a typical visit typically takes between a day and a number of days, set by the joint lengths, the edge condition and the phasing you need. For bigger or phased jobs, we will set out a timescale with the quote.

When is resealing likely to be due?

It depends on movement, UV and weather, cleaning, traffic and the product. Treat them as maintenance items and inspect them regularly.

Why it’s worth doing now in New Ash Green

Painting or coating straight over joints rarely lasts. The joints have to be filled or sealed as joints, whether or not the floor is coated. One visit to deal with every failing joint makes more sense than several trips to a place like New Ash Green, rather than one at a time. Send photographs of each area and we’ll quote for the lot.

No two sites price the same: joint size, product, access and site hours all play a part. Send the details and a fixed figure follows.

What you get with us

  • Products installed to the manufacturer’s instructions
  • Constructionline member for supplier checks
  • A fixed quote before work starts
  • Old sealant cut out, never sealed over

See how commercial sealant jobs are priced and our accreditations.

Building owners, agents and FMs in New Ash Green

FMs need a contractor who is easy to get on site. Tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we will confirm with the quote.

We take on planned maintenance as well as one-off repairs: working through a building or an estate in stages that fit your budget. New Ash Green can form part of a wider programme across Kent.

When to call us in New Ash Green

Loading bay joints are exposed to wind, wet tyres and bigger temperature swings, as well as the tightest turning loads. That is typically where joint failure starts.

Clients normally get in touch after noticing something like this:

  • Flexible sealant torn out by wheels
  • Untidy open joints in a retail unit
  • A gap opening alongside old joint filler
  • Drivers complaining about joints on a route

If you manage units on an estate such as Heaver Farm Trading Estate, 0.7 miles to the south-west of New Ash Green, the floor joints under forklifts and pallet trucks and the slab joints in the yard are the ones to watch.

Questions to ask before you book

  • The terms of the workmanship guarantee
  • How joint depth will be controlled
  • Whether their applicators hold CSCS cards
  • How the existing material will be dealt with

Questions to ask before you appoint anyone

On site: what to expect

When we get to site, we sign in, go through any site induction and check how permits are handled. Floors, finishes and fittings next to the joints are covered before anything is cut or cleaned, with the work itself normally taking anything from a day for one loading bay to several days for a large floor, split into phases. Rural sites near New Ash Green may need directions, gate codes or a contact on site. Add it to your enquiry and we’ll build it into the plan.

  1. A floor survey records every joint, its edges and what crosses it.
  2. You receive a fixed quote showing products and phasing.
  3. Old fill and packed debris come out until both faces are sound.
  4. We extract the dust and prime the faces if the product needs it.
  5. Filler or sealant is placed to depth and finished flush.
  6. Zones reopen once cured and the work moves on.

What we need from you

  • Warn occupants and staff about the work
  • Tell us your opening times and when work is allowed
  • For older buildings, check the asbestos register before work

Get a fixed quote

We quote a fixed sum against the scope you give us, so the cost is agreed before work starts. To ask for one, call the office on 01277 525 020 or send details through our quote form.

Get a quick quote

Read more

When something else is needed

Our job is the joint, not everything around it. On its own, sealant can’t deal with:

  • Joint edges that have already broken away, which need repairing before filling (we’ll tell you if so)
  • Worn screed or surface finishes
  • A floor that rocks at the joints, which needs a structural fix

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

Where we work in New Ash Green

  • Forklift and pallet-truck routes
  • Construction joints
  • Retail and showroom floors
  • Saw-cut induced joints
  • Joints along racking aisles
  • Loading bays

Different surfaces, different methods

Flexible floor sealants

Where joints move more, a flexible polyurethane floor sealant is often used. They give less edge support than semi-rigid fillers so they are used where movement matters more than wheel load.

Construction joints

Day joints on busy routes are prone to edge damage. We look at how much they are moving before choosing the treatment.

Accreditations

Trusted. Accredited. Insured.