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

Floor Joint Sealing in Erith

Work needed on a floor joint in Erith? We assess it, carry out the work and guarantee our workmanship for 12 months.

  • Brittle joint filler breaking up
  • Failing joints at loading bays and dock doors
  • Open saw cuts full of debris
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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
Failed joints cut out, faces prepared, new sealant laid.
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Guaranteed
12-month guarantee on our workmanship.
South East, London & Scotland
Constructionline member
£5m PL insurance

Floor joint sealing near Erith

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

Floor joint sealing in Erith

Most industrial slabs are divided into panels with saw cuts and day joints, and each joint line is a weak edge that wheels run over all day. Our job is to put the right filler or sealant into them for the loads and the movement they see, so the arrises are supported and grit stays out. We work on construction joints, joints along racking aisles and loading bays, and what we’re called in for most is old filler gone hard, cracked or loose and filler that has parted from one face. Looking for mastic applicators who cover Erith? Mastic Doctor has worked for contractors, FMs and building owners since 2005, CHAS accredited and a Constructionline member.

Around Erith, as across London, joints are under constant load, from basement car parks and loading bays to podium decks and busy mall floors. A failed joint lets water and debris in, and the edges soon spall, so it pays to act early.

A 12-month guarantee applies to all our work in Greater London. Should something we installed fail, phone 01277 525 020 or send details through our quote form and we will come back to it.

The Mastic Doctor team beside their liveried vans in front of an office building
Location
Erith (DA8, DA17, DA7)
Wider area
Greater London
Cover
A 12-month guarantee
Quote
Fixed quote, scope in writing
Call
01277 525 020
Updated
3 November 2026

Should maintenance staff do it?

Redoing a failed joint typically costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. That’s why many clients bring in a specialist from the beginning.

Some joints are best left to specialists: 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.

What affects the price in Erith

To price the job, we consider:

  • Distance, for remote addresses
  • The site’s rules and procedures
  • Whether the work must be split into stages
  • Whether old sealant has to be cut out first

The price depends on the quantity of joints, what has to come out first and the access. Call for a fixed quote once you have the details.

What we need to price the job

A few photographs plus some basic facts will normally do. It helps to include:

  • Specification clauses that apply
  • When you need the work done
  • Drawings or a marked-up plan, if available
  • Whether the building will be occupied during the work

The quickest route to a quote is a few photos and the site postcode. Upload them with the quote form, or give us a call on 01277 525 020 or use the quote form to discuss it first.

Warehouse floors and decks around Erith

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. Erith has at least three named business or industrial parks inside a 3-mile radius. That puts plenty of warehouse floors, service yards and car parks close by, all with joints under traffic.

Hospital campuses such as Erith and District Hospital (less than half a mile south-west of Erith) grow in stages, leaving movement joints wherever new blocks meet old. On industrial estates such as Madford Trade Park, under half a mile to the north-west of Erith, saw-cut floor joints, loading bay slabs and yard joints take the heaviest traffic. For a centre such as Broadway Shopping Centre, 1.9 miles to the south-west of Erith, the service yard and car park joints normally need attention first.

Erith is about 3 miles north-west of Dartford, in Greater London. We cover commercial sites throughout Erith, for single jobs and planned programmes alike. We work across 764 places in Greater London, from busy centres to rural villages. London is covered too, around 11 miles from Erith.

Commercial sites across DA8, DA17 and DA7 are covered for floor joints. Streets here include Church Road, Town Square and Erith High Street. Sites close to Erith are covered too, including Northumberland Heath (1 mile south), Bexley Riverside (1 mile south), Belvedere (1 mile north-west), Lessness Heath (1 mile north-west) and Barnehurst (1 mile south). A short drive away, we cover London (11 miles west), City of Westminster (14 miles west), Marylebone (14 miles west), St Pancras (13 miles west), Shoreditch (11 miles west) and Walthamstow (11 miles north-west).

Near you in Erith

We work on buildings around Trinity School, The Cross Keys pub and Erith School. Erith has its own railway station: Erith station. Other landmarks nearby include Erith Museum (under half a mile east) and Erith and District Hospital (less than half a mile south-west). Open spaces near Erith include Crossness Nature Reserve.

Map of Erith © OpenStreetMap contributors

Keeping the joints sound

Cleaning and maintenance staff play a part too. Share these points with them:

  • Check joint lines on busy aisles regularly
  • Allow for topping up joints as a new slab settles
  • Hold traffic back until the product has cured
  • Treat loading bay joints first if they’re failing

If a joint we filled starts to break up within 12 months, tell us and we’ll arrange a look. After that, a check before your busiest period keeps small repairs small.

While the concrete edges are intact, it’s a filling job. Once they have broken away, edge repair comes first and that takes longer and closes areas for longer.

Erith: questions and answers

Is hospital work, at somewhere like Erith and District Hospital, something you do?

Yes, healthcare and care buildings are part of our work. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.

Do you cover business parks and estates near Erith, such as Madford Trade Park?

Yes. Our area takes in Erith and its surroundings, with estates and business parks such as Madford Trade Park included. Send details of the unit and the work through our quote form for a quick quote.

Do you guarantee industrial floor joints?

Every job has our 12-month guarantee. It covers our workmanship, not later slab movement or damage from impacts.

Will we need to close the floor?

Usually only the zone we are working in has to close. Each zone reopens when the product can take traffic, then we move to the next.

How soon can traffic go back on the floor?

Cure times vary with the product and the conditions. You will get a reopening time for each area before we start.

Are you insured?

Yes. Our insurance certificate can be sent alongside the quote.

How do we get a quote for floor joints?

Approximate metres of joint, photos of typical and worst areas, and a floor plan are usually enough for a quick quote. We can visit where that helps, and you can call the office on 01277 525 020 or send details through our quote form to arrange it.

On site: what to expect

At the end of each section, the masking comes off, the area is cleaned and every joint is checked. Where the sealant needs time to cure before use, we tell you and sign the area. The ULEZ covers the whole of Greater London, and parking near a job is rarely simple. Let us know about any on-site parking or loading arrangements when you send the job details.

  1. Each area is assessed for joint width, arris damage and the wheels that cross it.
  2. The quote fixes the price, names the filler or sealant and shows how the floor will be zoned.
  3. Each joint is cleared of old fill and dirt and taken back to clean, sound edges.
  4. Dust is sucked out of the joint and a primer used if the product data sheet asks for one.
  5. The chosen product is placed to its specified depth and trimmed level with the floor.
  6. The area is handed back once it has cured enough to take traffic.

What we need from you

  • Send asbestos survey details if the building is pre-2000
  • Send any specification or drawings in advance
  • Arrange parking or a loading space

Request a quote

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

Get a price

Advice

For managing agents and facilities managers

When you manage a building on behalf of an owner, clear figures and clear communication matter. You get a fixed quote, an agreed scope and a walk round at the end, plus a 12-month guarantee.

Blocks and communal areas make up much of the work for housing associations and agents. Work can be phased so residents and staff keep access throughout, with each stage agreed with your site contact.

What we can’t put right

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

  • Uneven floors that need grinding or levelling
  • Broken concrete either side of the joint
  • Structural cracking in the slab

Not sure which it is? You can speak to us on 01277 525 020 or send details through our quote form and we’ll tell you honestly.

Joints and surfaces we work on

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

Trusted. Accredited. Insured.