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

Floor Joint Sealing contractors in New Addington

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

  • Joint fill separating from the concrete
  • Loading bay joints breaking down
  • Brittle joint filler breaking up
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
South East, London & Scotland
CHAS accredited
£5m PL insurance

Need floor joint sealing in New Addington?

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

Floor joint sealing in New Addington

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 unfilled floor joints collecting dirt and grit and scruffy, dirty joint lines on a shop or showroom floor, we can help. One point of contact handles commercial sealant work in New Addington from the first photographs to the final walk-round, whether it’s one building or several.

Areas such as a loading bay or car park deck in New Addington 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.

What our 12-month guarantee covers is the way we did the job: the preparation, the sealing and the tooling. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.

Place
New Addington (CR0, CR9)
Region
Greater London
Guarantee
A 12-month guarantee
Price
Fixed quote, scope in writing
Phone
01277 525 020
Updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

Diagnose, treat, sign off

We bring the products specified for the job, along with primers and backing rod. Joint faces are cleaned back to sound, dry surfaces, the manufacturer’s primer is applied where it’s called for, and the sealant is tooled off neatly. Most London premises stay occupied while we’re on site, so we agree zones and timings with the building or facilities manager. Areas are handed back as each section is finished.

  1. A floor survey records every joint, its edges and what crosses it.
  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. Filler or sealant is placed to depth and finished flush.
  6. We hand each phase back when it can take traffic.

What we need from you

  • Explain the parking and delivery arrangements
  • Share your working hours and any access restrictions
  • Point out any areas we must not close

Request a quote

A good quote starts with a clear picture: the joints involved, quantities, access and the product called for. Send what you have, and we’ll arrange a site visit if anything is unclear.

Get a price

Related advice

Should maintenance staff do it?

For a quick touch-up, site staff may be fine, 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. Backing rod, primer where specified and a joint designed to move with the building are easy to get wrong without experience.

Why it’s worth doing now in New Addington

Waiting for a site-wide shutdown often means the joints keep getting worse. Zone by zone, the worst aisles can be dealt with now and the remainder follows on a plan that suits you. In a London building, a failed joint rarely affects only one party. Dealing with it early is simpler for everyone.

Whether it’s a single area or a whole estate, the same things set the price: scope, access, product and programme. Call for a quote and we’ll put a fixed figure on it.

Why appoint us

  • Work to your specification and the manufacturer’s guidance
  • Our applicators hold CSCS cards
  • Health and safety: CHAS accredited
  • One number for every site we cover

Read our cost guide and our accreditations.

Common problems we fix in New Addington

A slab keeps shrinking for a long time after it is cast, and the saw cuts are there so it cracks in straight, controlled lines. As the panels contract, the joints widen, and a filler placed early can part company with one face.

What tends to prompt an enquiry:

  • Chipped and spalling edges along forklift routes
  • Untidy open joints in a retail unit
  • Sealant pulled out along a truck route
  • Open saw cuts full of debris

Across sites such as Glebe Farm Business Park, 2.2 miles to the east of New Addington, floor and movement joints can be sealed in phases so units keep working.

What your quote should include

  • How they’ll work around occupants
  • The terms of the workmanship guarantee
  • How the joint faces will be prepared and primed
  • What level of public liability insurance do they hold?

Questions to ask before you appoint anyone

How the job changes by surface

Isolation joints at walls and columns

Where racking or plant sits near column joints, access is agreed before we start so nothing has to move unexpectedly.

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.

Slabs, ramps and loading bays in New Addington

London car parks, loading bays and podium decks often can’t close for long, so the work is broken into short sections agreed with the building manager. The 3 miles around New Addington take in at least three named trading estates, business parks or retail parks. Floors, loading bays and yards on sites like these are where floor and movement joints work hardest.

For a school such as Rowdown Primary School, playground and building joints can be done in the holidays. Warehouse floors on estates like Vulcan Way Industrial Estate (0.6 miles east of New Addington) carry pallet trucks and forklifts over every saw-cut joint.

New Addington is about 4 miles south-east of Croydon, in Greater London. Commercial clients in New Addington can call on us for floor joints, as part of our coverage of Greater London. New Addington is one of 764 places in Greater London on our list. We also cover London, some 11 miles away.

Anyone looking for floor joint sealing in CR0 and CR9 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. Streets here include Bothwell Road, Windham Avenue and Gascoigne Road. Close to New Addington, our area also takes in Forestdale (1 mile west), Fickleshole (1 mile south), Addington (1 mile north-west), Farleigh (1 mile south-west) and Selsdon (2 miles west). Bigger towns within reach include London (11 miles north), City of Westminster (13 miles north-west), Marylebone (13 miles north-west), Kensington (14 miles north-west), St Pancras (13 miles north) and Shoreditch (13 miles north).

Landmarks near New Addington

In New Addington, that means premises near Meridian High School and Addington Vale, among other places. The nearest railway station is Hayes (Kent) station, about 2.6 miles north-east. Nearby you will also find Warlingham Park Hospital (1.8 miles south) and Bethlem Museum of the Mind (3.3 miles north-east). Open spaces near New Addington include Nore Hill and Hutchinson's Bank.

Map of New Addington © OpenStreetMap contributors

Your questions answered

Do you take on jobs in New Addington where loading and access are tightly controlled?

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

Can you work on a hospital site such as Bethlem Royal Hospital?

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.

Are you CHAS accredited and on Constructionline?

Yes. We are CHAS accredited, we are a Constructionline member and we use CSCS-carded applicators.

How many days will you need on site?

The duration is planned around your programme and the access we are given. We’ll give you an estimate of time on site when we quote.

Which sealant will you use?

The specification comes first, if there is one. If there isn’t one, it comes down to the joint: its movement, its surfaces and what it has to cope with.

Do you offer coloured sealant?

In many cases, 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.

When is resealing likely to be due?

Nobody can honestly give a figure in years, since movement, weather, cleaning and use all affect it. Regular inspection is the best way to catch problems early.

When it isn’t the sealant

Part of a good diagnosis is knowing where sealant stops. You’ll hear from us if the cause turns out to be any of the following:

  • A floor that is out of level for the racking or trucks
  • Structural cracking in the slab
  • Unstable slabs moving under traffic

If in doubt, call the office on 01277 525 020 or use the quote form and we will say what we think before you book.

Surfaces we seal

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

Trusted. Accredited. Insured.