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

Industrial and floor joint sealing in North Cray, Greater London

Commercial sealant work in North Cray for contractors, FMs and building owners: floor joint sealing and filling in warehouses, factories and industrial units, quoted at a fixed price.

  • A gap opening alongside old joint filler
  • Brittle joint filler breaking up
  • Chipped and spalling edges along forklift routes
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
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
CHAS & Constructionline
£5m public liability

Floor joint sealing for North Cray sites

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

About our floor joint sealing in North Cray

Not every floor joint we treat is in a warehouse. Retail units, showrooms and trade counters have slab joints crossed by trolleys, footfall and cleaning machines, where a gappy, dirty joint looks untidy and snags castors. A neat, flush fill makes the floor easier to clean and look after. If you have sealant pulled out along a truck route and untidy open joints in a retail unit, we can put it right, whatever the surface. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, in North Cray it comes down to the same thing: failed joints cut out, faces prepared and the right sealant laid to the right depth.

Areas such as a loading bay or car park deck in North Cray typically have to stay in use. Joints are done in sections, with bays coned off one after another, so the site keeps operating, at times agreed with the building manager.

Guaranteed is the last step of every job. Our workmanship is backed for 12 months, and we explain exactly what that covers when we quote.

Where
North Cray (DA14)
Wider area
Greater London
Guarantee
12 months on our workmanship
Quote
A fixed quote before we start
Telephone
01277 525 020
Updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

Cost factors for floor joints

What shapes the price:

  • The size and state of each joint
  • Removal of failed or old sealant
  • The product specified
  • The site’s rules and procedures

There’s no price list, since every building and every scope is different. For a fixed figure, call for a quote.

Sending details for a quote

We can often quote from photographs and a few details. Please tell us:

  • Anything awkward about access or site hours
  • The postcode of the building
  • Asbestos survey details if the building is older
  • Rough lengths or quantities, or drawings if you have them

To get a fixed quote, ring 01277 525 020 or email us with the site address and an outline of the work. Our quote form is another easy route.

Questions we are asked in North Cray

Do you cover business parks and estates near North Cray, such as Old Bexley Business Park?

Yes. Estates, retail parks and business parks around North Cray, Old Bexley Business Park among them, are all within reach. Photos and a short description are enough for a first look.

Is a hospital such as Queen Mary's Hospital somewhere you can work?

Yes, healthcare and care buildings are part of our work. Work is phased so departments keep running, under the site’s own rules.

Can you work to our specification?

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

How do we get a quote for floor joints?

Use our quote form, or email photographs and a plan and tell us what runs on the floor. We then send a fixed quote that shows the products and zones.

How soon can traffic go back on the floor?

The wait is set by the product’s cure time and cooler floors take longer. Phasing is planned with that in mind.

Do you repair broken joint edges?

Filling against broken edges doesn’t last. We’ll tell you if the joint edges need repairing first and set out how that affects the job.

Will your applicators have CSCS cards?

Yes. If you need card details for site access, tell us and we’ll confirm them with the quote.

Different surfaces, different methods

Construction joints

Day joints vary, with or without armoured edges. We’ll tell you if the edges or any armouring look like they need attention before filling.

Semi-rigid joint fillers

A semi-rigid fill can separate along one side while a slab is still shrinking. That is normally dealt with by topping up later and we will flag it at quote stage.

Building owners, agents and FMs in North Cray

For main contractors, we work as the sealant subcontractor. Programme, specification and site rules come first, with CSCS-carded applicators on site.

Hospitality, education, healthcare, office and retail clients come to us directly as well. The work is planned around how the building runs, so guests, pupils, patients or staff are disturbed as little as possible.

On site: what to expect

The first thing on site is a walk round with your contact, agreeing which joints are in scope, where to start and what must stay open. Then we strip out anything that has failed, prepare every joint and seal it. The ULEZ covers the whole of Greater London, and parking near a job is rarely simple. If there’s a loading bay, a car park or a permit we can use, tell us when you send details.

  1. A floor survey records every joint, its edges and what crosses it.
  2. You receive a fixed quote showing products and phasing.
  3. Each joint is cut or routed back to clean, sound concrete.
  4. Dust is vacuumed out and primer applied where specified.
  5. The joint is filled to its specified depth and trimmed level.
  6. We hand each phase back when it can take traffic.

Preparing the site

  • Send any specification or drawings in advance
  • Point out any areas we must not close
  • Tell staff and tenants when we will be in

Request a quote

Quotes are fixed against the scope you send, so you know the figure before anyone is on site. To ask for one, ring 01277 525 020 or send details through our quote form.

Ask for a quote

Advice

Honest limits

We check first that sealant really is the fix. It won’t put right:

  • Slab panels that rock or move under load
  • Structural cracking in the slab
  • Worn screed or surface finishes

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

Surfaces we seal

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

Floors, slabs and movement joints in North Cray

At least three named trading, business or retail sites lie within about 3 miles of North Cray. Floors, loading bays and yards on sites like these are where floor and movement joints work hardest. London car parks, loading bays and podium decks often can’t close for long, so we seal in sections and hand areas back as each cures.

At a retail site such as Broadway Shopping Centre, 1.7 miles to the north of North Cray, trolleys, cages and cars run over floor and slab joints all day. A campus such as University of Greenwich Avery Hill Campus (to the west of North Cray) has long runs of movement joint in its buildings, decks and paving. At places like Crayfields Business Park, 2 miles to the south-west of North Cray, joints are sealed a section at a time so operations carry on.

North Cray is about 2 miles east of Sidcup, in Greater London. Our applicators travel to North Cray for work on floor joints, handled exactly as we handle every other area. 764 places across Greater London fall within our area, including North Cray. For work in that direction, see our London page (11 miles or so).

Postcode districts covered here: DA14 for floor joints. If your site is on Water Lane, North Cray Road and Leafield Lane or close by, we can quote for floor joints. If your building is just outside North Cray, we cover Bexley (1 mile north), Coldblow (1 mile north-east), Ruxley (1 mile south), Blendon (1 mile north-west) and Joyden's Wood (1 mile east). Bigger towns within reach include London (11 miles north-west), City of Westminster (14 miles north-west), Marylebone (14 miles north-west), Kensington (15 miles west), St Pancras (13 miles north-west) and Shoreditch (11 miles north-west).

Around North Cray

Around North Cray, our work takes us to commercial buildings near Foots Cray Meadows, Cleeve Park School and The White Cross pub, among other places. For rail, the closest station is Albany Park station, about 0.6 miles north-west. Nearby you will also find Broadway Shopping Centre (1.7 miles north) and Bexley Hospital (1.8 miles north). Green spaces nearby include Wansunt Pit and Summer Hill.

Map of North Cray © OpenStreetMap contributors

Doing it in-house

Certain joints really need a specialist: for example 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.

For most general trades, sealant is a sideline. A specialist prepares properly, controls joint depth and picks a product with the right movement class.

Accreditations

Trusted. Accredited. Insured.