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

Industrial and floor joint sealing in North End, Greater London

Sealant work in North End for main contractors, managing agents and facilities managers: floor joint sealing and filling in warehouses, factories and industrial units, quoted at a fixed price.

  • Drivers complaining about joints on a route
  • Scruffy, dirty joint lines on a shop or showroom floor
  • Old filler gone hard, cracked or loose
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
The right sealant, to the right depth, neatly finished.
4
Guaranteed
12-month guarantee on our workmanship.
South East, London & Scotland
CHAS accredited
Fully insured: £5m PL

Floor joint sealing across North End

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

North End: questions and answers

Can you cope with the access rules in a London building?

Yes, we plan every London job around the building’s own access rules. Share the building’s contractor rules and we’ll work to them. We allow for the ULEZ, which covers every borough

Is hospital work, at somewhere like Charing Cross Hospital, something you do?

Yes. We work in healthcare settings as well as offices and schools. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.

Is colour matching possible?

That depends on the product specified. Some ranges are wide, others limited, so we will confirm the colours available for the specified product with the quote.

How do you choose the sealant?

The specification comes first, if there is one. Without one, the joint decides: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.

How long do sealant joints last?

There isn’t a single answer, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular checks let you plan resealing before leaks or damage.

What guarantee do you give on joint filling?

A 12-month guarantee covers the work we do. It covers our workmanship, not later slab movement or damage from impacts.

Are you fully insured?

Yes. We are fully insured, and the certificate can go with your quote.

Floor joint sealing in North End

Sometimes the concrete either side of a joint has already spalled. A filler laid against broken edges has nothing sound to grip, so we will tell you if the joint edges need repairing first and leave that decision with you. If you’re dealing with drivers complaining about joints on a route and chipped and spalling edges along forklift routes, we can help, on joints along racking aisles, forklift and pallet-truck routes and saw-cut induced joints alike. Facilities teams, main contractors and managing agents in North End tend to want the same three things: a clear scope, tidy work and joints that don’t fail again.

Floor and movement joints in London take heavy use: car park decks, loading bays, shopping centre malls and podiums over occupied space. When a joint fails, grit and water get in and the arrises start to break up, so it pays to act early.

Guaranteed is the last step of every job. Our workmanship is backed for 12 months, and the quote explains what it covers.

Mastic Doctor team members lined up next to their branded vans outside an office building
Where
North End (W14, SW6, SW5)
Wider area
Greater London
Guarantee
A 12-month guarantee
Quote
Quoted before any work starts
Telephone
01277 525 020
Updated
3 November 2026

Owners, agents and contractors

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

CHAS accredited and a Constructionline member, we make supplier vetting simple. Our insurance certificate can be sent along with the quote.

Why act early in North End

Every jolt over a broken joint passes into the truck, the load and the driver. That means extra wear on wheels and a rougher ride for staff, which nobody budgets for. A filled joint takes most of that out. Repeat call-outs disrupt occupied London buildings, so cutting the old sealant out fully and doing it right once is the better route.

Quantities, awkward access and phased working all shape the price. So do site requirements such as inductions and permits, along with the time of year for external work.

Why clients in North End choose us

  • Fully insured, including public liability cover
  • Clear, fixed quotes
  • 12-month guarantee on workmanship
  • Our applicators hold CSCS cards

See how commercial sealant jobs are priced or our accreditations.

Traffic, movement and joints around North End

Less than 3 miles from North End there are at least three named estates and business parks. Sites like these are full of saw-cut floor joints, yard slabs and car park joints. In London, decks, bays and service yards typically have to keep running, so the work is broken into short sections agreed with the building manager.

At a retail site such as Kensington Arcade, which lies north-east of North End, trolleys, cages and cars run over floor and slab joints all day. For estates staff at a university like University of Westminster, which lies north of North End, building and paving joints are part of the planned maintenance list. Parks like Berghem Mews Business Village, 0.7 miles north-west of North End, combine paved areas, car parks and building elevations, each with joints that move.

North End is about 1 mile south of Kensington, in Greater London. North End sits inside our coverage, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Our Greater London coverage takes in 764 places, large and small.

We take on floor joints across the W14, SW6 and SW5 postcode area, whatever the building. Buildings on Sun Road, Star Road and Field Road are within our area. Sites close to North End are covered too, including West Kensington (1 mile east), Brook Green (1 mile north-west), Fulham (1 mile south), Hammersmith (1 mile west) and Brackenbury Village (1 mile north-west). Further afield, our area takes in London (5 miles east), City of Westminster (3 miles north-east), Marylebone (3 miles north-east), St Pancras (5 miles north-east), Shoreditch (6 miles north-east) and Walthamstow (10 miles north-east).

Landmarks near North End

Locally, jobs take us to sites close to Seven Stars pub, Polish Library POSK in London and Avonmore Primary School. The closest station to North End is Kensington Olympia station, roughly 0.5 miles north. A little further out are Hammersmith Broadway (0.7 miles west) and Montfichet's Tower (4.8 miles east). Open spaces near North End include WWT London Wetland Centre and Campden Hill.

Map of North End © OpenStreetMap contributors

Our process

On arrival, 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 any cutting starts, with the work itself usually taking a day for smaller units, with bigger warehouse floors programmed over several visits. In North End, most buildings stay in use during the work, so we agree zones and timings with the building or facilities manager. Areas are handed back as each section is finished.

  1. First comes a walk of the floor to record joint sizes, broken edges and traffic routes.
  2. A fixed quote follows, listing the treatment for each area and the order of work.
  3. We remove failed material and packed debris until sound concrete is exposed on both faces.
  4. Dust is extracted from the joint and primer applied where the manufacturer specifies it.
  5. Filler or sealant goes in to the right depth and is finished flush with the slab.
  6. The area is handed back once it has cured enough to take traffic.

Before we start on site

  • Confirm the product named in the specification
  • Move anything stored against the joints
  • Send your site hours and access windows

Quotes

A handful of photos and a postcode is the fastest way to a quote. Upload them with the quote form, or call the office on 01277 525 020 or email us if you’d rather talk the job through.

Get a price

Advice

When it isn’t the sealant

Part of a good diagnosis is knowing where sealant stops. We will tell you if the real problem is one of these:

  • Uneven floors that need grinding or levelling
  • Broken concrete either side of the joint
  • Unstable slabs moving under traffic

If you are not sure, just ring 01277 525 020 or email drawings and photos and we will give you a straight answer before you book.

Surfaces we seal

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

Should maintenance staff do it?

Using site staff can make sense for a small touch-up, but larger jobs are different: a specialist brings efficiency, a consistent finish and a 12-month guarantee.

The visible bead is only part of the job. Correct depth, the right primer and a sealant matched to the movement are where general trades tend to cut corners.

How the job changes by surface

Flexible floor sealants

Polyurethane sealants suit floor joints with larger movement. They give less edge support than semi-rigid fillers, so they suit lighter traffic or movement joints.

Saw-cut induced joints

Open saw cuts collect grit and break at the arris. Filling them early keeps them tidy and protects the edges.

Accreditations

Trusted. Accredited. Insured.