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

Floor Joint Sealing contractors in London

Floor joint sealing and filling in warehouses, factories and industrial units throughout London and nearby, by CSCS-carded applicators. CHAS accredited and fully insured.

  • Cracked and crumbling joint fill
  • A rough ride across broken joints
  • Loading bay joints breaking down
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Need floor joint sealing in London?

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

Floor joint sealing in London

Floor joint sealing for us covers warehouse aisles, loading bays, production halls, retail floors and showroom slabs. Each job is priced from the metres of joint, their condition and the access windows we get, and the quote is fixed before we mobilise. If you’re dealing with a gap opening alongside old joint filler and untidy open joints in a retail unit, we can put it right, whatever the surface. Facilities teams, main contractors and managing agents in London tend to want the same three things: a clear scope, tidy work and joints that don’t fail again.

On busy estates around towns like London, joints are resealed in stages so units keep trading: one aisle, bay or level at a time, with areas handed back as each section cures.

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

Location
London (CR0, E14, CR4, SW11)
Wider area
Greater London
Cover
12 months on every job
Price
Quoted before any work starts
Telephone
01277 525 020
Last updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Cost factors for floor joints

What shapes the price:

  • Travel to remote or island sites
  • Phasing around occupants
  • Joint width, depth and condition
  • How accessible the joints are

Larger quantities, tricky access or phasing all shape the price. Site requirements like inductions and permits play a part as well, along with the time of year for external work.

Details that help us quote

However big the job, these details speed things up:

  • Drawings or a marked-up plan, if available
  • Clear photographs of the problem areas
  • Specification clauses that apply
  • Whether an asbestos survey exists

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

When something else is needed

A proper diagnosis includes knowing what sealant can’t do. We’ll tell you if the real problem is one of these:

  • Level or flatness problems across the floor
  • Cracks across panels caused by settlement or overload
  • Unstable slabs moving under traffic

Not sure which it is? You can call 01277 525 020 or send photos by email and we will tell you honestly before you book.

Surfaces we seal

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

Joints that move: notes for London

Less than 3 miles from London there are at least three named estates and business parks. Floors, loading bays and yards on sites like these are where floor and movement joints work hardest. London sits in one of the drier corners of the country, the South East. 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.

Business parks such as Southwark Bridge Business Centre (to the north of London) have car parks, paved areas and long brick and panel elevations, all with movement joints. Centres like Southernwood Retail Park, 1.1 miles south-east of London, have mall floors and service decks whose joints carry steady traffic. Across sites such as Grand Vitesse Industrial Estate, 0.5 miles north-west of London, floor and movement joints can be sealed in phases so units keep working.

London is in Greater London. Commercial clients in London can call on us for floor joints, as part of our coverage of Greater London. Our Greater London coverage takes in 764 places, large and small.

We cover the CR0, E14, CR4 and SW11 postcode districts. Buildings on Walcot Square, Surrey Square and Sutherland Square are within our area for floor joints. You will find London on or near the A2 and A10, so getting applicators and materials to site is simple. Nearby places we also cover include Walworth (1 mile south), Bermondsey (1 mile east), Camberwell (2 miles south), South Bermondsey (2 miles south-east) and Surrey Canal (2 miles south-east) for floor joints. Nearby towns on our patch include City of Westminster (3 miles west), Marylebone (3 miles north-west), Kensington (5 miles west), Walthamstow (7 miles north-east), Hampstead (5 miles north-west) and Ruislip (14 miles west). As one of the bigger centres in Greater London, London has a broad mix of commercial, public and industrial buildings, and we cover them all.

Around London

We work on buildings around Newington Gardens, Trinity Arms Public House and London School of Musical Theatre and the streets around them. You’ll also find St Mary-at-Hill (0.9 miles north-east), Ark Globe Academy (less than half a mile south) and The BFI Reuben Library (1 mile north-west). There’s a railway station in London itself: Elephant & Castle station. Nearby you’ll also find Surrey Dispensary (under half a mile south-east) and Baynard's Castle (0.9 miles north). Green spaces nearby include Bellenden Road Nature Garden and St. James's Park Lake.

Map of London © OpenStreetMap contributors

Commercial clients in London

When you manage a building on behalf of an owner, clear figures and clear communication matter. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative.

Whether you’re a managing agent, a property factor or an owner’s representative: send the details, accept a fixed quote, and we carry out and guarantee the work. We can agree access arrangements and keyholder contacts beforehand.

From enquiry to sign-off

Occupied buildings need a little choreography. The work area is signed and kept contained, with routes through the building left open and work section by section so the rest of the building stays in use. For premises in central London, deliveries and parking need a bit of planning, whereas edge-of-town units normally have yard space. Let us know what’s there when you send details.

  1. We walk the floor and mark up joint widths, edge damage and traffic routes.
  2. The treatment and the zones are set out in a fixed quote.
  3. Old fill and packed debris come out until both faces are sound.
  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.

What we need from you

  • Share your working hours and any access restrictions
  • Let us know about inductions and permits
  • Tell us which areas need to stay in use

Ask for a quote

If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price the work to it. Smaller jobs need nothing more than photos and a few notes.

Get a quick quote

Read more

What the job involves on each surface

Loading bays and dock areas

Loading bays combine the heaviest turning loads with wet tyres and cold air from open doors. Joints here usually fail first so many programmes begin here.

Retail and showroom floors

We plan shop-floor work so trading can continue. Tell us your site hours and access windows and we’ll plan around them.

Questions we’re asked in London

Do we have to stop operations in London while the joints are sealed?

Rarely. Work is phased around your operations. We agree the sequence and timings with you before we start.

Does your area include sites such as Southwark Bridge Business Centre, near London?

Yes. We cover London and the area around it, including industrial estates, business parks and retail parks such as Southwark Bridge Business Centre. To start, just give us a call on 01277 525 020 or send photos by email with the unit, the joints involved and your access times.

How do you choose the sealant?

If the job is specified, we follow the specification. Otherwise, we recommend a product to suit the joint’s movement, the substrate and the conditions, following the manufacturer’s guidance.

Is it normal for joint filler to separate?

On newer slabs, the concrete keeps shrinking after the joints are filled, so a semi-rigid filler can part from one face. It is normally dealt with by topping up.

Is London in your area?

Yes. We take on work across London, and the same phone number covers every area.

Can you fill joints where the arrises have spalled?

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

When can forklifts run over new joint filler?

The wait is set by the product’s cure time and cooler floors take longer. We plan the phasing so that waiting time fits your operation.

Maintenance after handover

Regular inspection catches problems early. Specifically:

  • Keep grit out of unfilled joints in the meantime
  • Ask drivers not to drag forks or pallets
  • Walk the main routes and inspect joint lines on a regular cycle
  • Hold traffic back until the product has cured

We will give you a time before trucks can run over the new joints, and it’s worth enforcing. In a busy building, barriers keep early traffic away.

Edges tend to break slowly at first, then quickly. Once the first piece is out, wheels drop further and hit harder, so it pays to act at the first signs.

Accreditations

Trusted. Accredited. Insured.