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

West Dulwich floor joint sealing

Floor joint sealing and filling in warehouses, factories and industrial units in West Dulwich. CHAS accredited and fully insured, with a 12-month guarantee.

  • Joint edges breaking up under truck wheels
  • Loading bay joints breaking down
  • Open saw cuts full of debris
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
CHAS accredited
£5m PL insurance

Floor joint sealing across West Dulwich

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

Floor joint sealing for commercial buildings in West Dulwich

Across West Dulwich and the rest of Greater London, it runs the same way: you send details, we send a fixed quote, the joints are done and the 12-month guarantee follows. A rough length of joint, photographs of the worst areas and a site plan let us give a quick quote and a visit can be arranged where that is easier. Site teams most often ask us about flexible sealant torn out by wheels and a rough ride across broken joints, on construction joints, forklift and pallet-truck routes and joints along racking aisles. Most enquiries from West Dulwich start with one failed joint and grow into a wider look at the building: we check the joints around it and give you an honest view of what needs doing now and what can wait.

Around West Dulwich, 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.

Our workmanship is guaranteed for 12 months, in West Dulwich as everywhere else we work. If our installation lets you down in that time, we return and fix it.

The Mastic Doctor team standing beside their branded vans outside an office building
Place
West Dulwich (SE21, SE27, SE19)
Region
Greater London
Cover
12 months on our workmanship
Quote
Fixed quote, scope in writing
Call
01277 525 020
Page updated
3 November 2026

Keeping the joints sound

After handover, a little attention goes a long way:

  • Treat loading bay joints first if they’re failing
  • Keep grit out of unfilled joints in the meantime
  • Ask drivers not to drag forks or pallets
  • Record damaged joints with a photo and a location

Keep traffic off fresh joints until the time we give you and it pays to stick to it. In a busy building, barriers keep early traffic away.

Joint damage starts slowly and then speeds up. Once the first piece is out, wheels drop further and hit harder, so it pays to act at the first signs.

Doing it in-house

Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and we will confirm the paperwork you need with the quote.

Putting right a botched joint often costs more than sealing it well at the start, because the whole bead must be removed and the faces cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.

From enquiry to sign-off

Before any cutting starts, the area is protected: tape along each joint edge and covers over finishes, stock and equipment close by. The work itself usually takes a day or more, depending on the metres of joint and how many zones the floor is split into, and our waste is bagged and taken away as we go. 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. 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. 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.

Preparing the site

  • Point out any areas we must not close
  • Send your site hours and access windows
  • Confirm the product named in the specification

Ask for a quote

If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price against exactly what is specified. Smaller jobs need nothing more than photographs and a few notes.

Get a price

Read more

When it isn’t the sealant

Some faults sit outside our scope, and we point that out rather than sealing over them:

  • A floor that rocks at the joints, which needs a structural fix
  • Structural cracking in the slab
  • Broken concrete either side of the joint

Not sure which it is? You can phone 01277 525 020 or email us and we will tell you honestly.

Where we work in West Dulwich

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

Common problems we fix in West Dulwich

Oil, laitance, dust and old cleaning chemicals build up inside joints. If the faces aren’t taken back to clean concrete first the new filler can’t stay bonded.

Any of the following is a good reason to get the joints checked over:

  • Dock area joints that have failed first
  • Chipped and spalling edges along forklift routes
  • Sealant pulled out along a truck route
  • Joint fill separating from the concrete

Across sites such as Parkhall Business Centre, which lies west of West Dulwich, floor and movement joints can be sealed in phases so units keep working.

What your quote should include

  • How the joint faces will be prepared and primed
  • The terms of the workmanship guarantee
  • Will failed sealant be removed rather than covered?
  • What site paperwork they can supply

Questions to ask before you appoint anyone

What happens if it’s left?

A floor coating laid over open joints soon cracks along the joint lines. The joints have to be filled or sealed as joints, whether or not the floor is coated. Access in London is hard enough to arrange once, so while access is arranged it pays to renew all failing joints, not just the worst.

Pricing floor joints depends on quantities, condition and access, and any specification that applies. Call for a quote.

Why choose Mastic Doctor in West Dulwich

  • Fully insured, including public liability cover
  • Clear, fixed quotes
  • Workmanship guaranteed for 12 months
  • One phone line for London, the South East and Scotland

See what affects the cost and how we’re accredited.

Your questions answered

Is hospital work, at somewhere like British Home & Hospital for Incurables, something you do?

Yes. We work in healthcare settings as well as offices and schools. Work is phased so departments keep running, under the site’s own rules.

Do you take on jobs in West Dulwich where loading and access are tightly controlled?

Yes. Booked loading bays, goods lifts and permit-to-work systems are normal for London jobs. Say when the building is occupied and when it’s quiet, and we’ll plan accordingly. All of Greater London is inside the ULEZ, and our planning allows for it

Do you offer coloured sealant?

Often, yes. Sealants are made in a wide range of standard colours, and matching to RAL references or nearby finishes is commonly requested. We will confirm the colours available for the specified product.

Will we need to close the floor?

We phase it. We work aisle by aisle or zone by zone so the rest of the floor stays in use around the site hours and access windows you give us.

Do your applicators hold CSCS cards?

Yes. We use CSCS-carded applicators, which many sites require.

Can you work to our specification?

Yes. The specification and the manufacturer’s installation guidance are what we work to.

Do you guarantee industrial floor joints?

A 12-month guarantee covers the work we do. It applies to our workmanship rather than structural movement or accidental damage.

Floor joint sealing around West Dulwich: how the place shapes the job

At least three named trading, business or retail sites lie within about 3 miles of West Dulwich. That puts plenty of warehouse floors, service yards and car parks close by, all with joints under traffic. Basement car parks and service yards in London tend to be in use all working day, so the work is broken into short sections agreed with the building manager.

Sites like British Home & Hospital for Incurables, 1.2 miles south-west of West Dulwich, carry ambulances, deliveries and visitors’ cars over their road and deck joints. Campuses like King's College London, 2.5 miles to the north of West Dulwich, mix old and new buildings, with movement joints wherever they meet.

West Dulwich is about 1 mile north-east of West Norwood, in Greater London. We cover commercial sites throughout West Dulwich, whether it’s a single job or part of a planned programme. West Dulwich is one of 764 places in Greater London on our list.

Work on floor joints is covered throughout SE21, SE27 and SE19, for business premises of every kind. We cover commercial and managed buildings on Berry Lane, Clive Road and Myton Road. You’ll find West Dulwich on or near the A2199, so getting applicators and materials to site is simple. Close to West Dulwich, our area also takes in Sydenham Hill (1 mile east), West Norwood (1 mile south-west), Gipsy Hill (1 mile south), Dulwich (1 mile north) and Upper Norwood (1 mile south). Bigger towns within reach include London (5 miles north), City of Westminster (6 miles north-west), Marylebone (6 miles north-west), Kensington (7 miles north-west), St Pancras (7 miles north) and Shoreditch (6 miles north).

What’s near West Dulwich

We work on buildings around The Wood House, Dulwich Prep & Senior and Kingsdale Foundation School, among other places. West Dulwich has its own railway station: Sydenham Hill station. Other landmarks nearby include British Vintage Wireless And Television Museum (under half a mile west) and St Christopher's Hospice (1.3 miles south-east). For a walk, there’s Battersea Park Lake and Dulwich Upper Wood.

Map of West Dulwich © OpenStreetMap contributors
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