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

Expansion joint sealing in New Charlton

Commercial sealant work in New Charlton for contractors, FMs and building owners: expansion and movement joint sealing in walls, decks and floors, quoted at a fixed price.

  • Damp inside where a wall movement joint has failed
  • Brittle, chalky sealant on external joints
  • Sealant pulling off the joint face
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
12-month guarantee on our workmanship.
Covering the South East & Scotland
CHAS accredited
£5m PL insurance

Expansion joint sealing in New Charlton

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

Expansion joint sealing in New Charlton, done properly

Our movement joint work takes in walls, panels, decks and floors: brickwork and blockwork joints, precast and cladding panel joints, concrete joints, car park decks and ramps, podiums and floor movement joints. Every one calls for a sealant picked for its movement, exposure and traffic. The enquiries we see most involve joints where the bead has lost adhesion and leaks through car park deck joints onto the level below, across car park decks and ramps, brickwork movement joints and blockwork control joints. Facilities teams, main contractors and managing agents in New Charlton tend to want the same three things: a clear scope, tidy work and joints that don’t fail again.

Around New Charlton, 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.

We sign every job off with a 12-month guarantee. It’s a plain promise: if the work we did fails within twelve months, we return to fix it.

Where
New Charlton (SE7, SE18, E16)
Region
Greater London
Guarantee
12 months on our workmanship
Quotes
A fixed quote before we start
Telephone
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

Building owners, agents and FMs in New Charlton

CHAS accredited and a Constructionline member, we are straightforward to vet for your supplier list. We are fully insured, and our insurance certificate can go with the quote.

Main contractors use us as their sealant subcontractor. We work to your programme, your specification and your site rules.

Do you need expansion joint sealing in New Charlton?

When a bead pulls away from one face, it has lost adhesion. Poor preparation, a skipped primer, or sealant bonded to the back of the joint are typical reasons.

Common reasons buildings call us in:

  • Damp inside where a wall movement joint has failed
  • Layers of sealant in a movement joint
  • Joints where the bead has lost adhesion
  • Movement joints with split or torn sealant

For a school such as Royal Greenwich Trust School, playground and building joints can be done in the holidays.

What to look for in a quote

  • What the guarantee covers, and for how long
  • Proof of insurance
  • Who will actually carry out the work
  • Health and safety accreditation such as CHAS

How to choose a sealant contractor

Why deal with it now?

A failed joint seal doesn’t mean the slab, panel or wall needs replacing. Where the edges are sound, cutting out and resealing is enough. We’ll flag where edges need repair before sealing. In New Charlton, each extra visit means more notices, permits and disruption, so a proper job first time, with the old sealant fully removed, is worth it.

The price depends on the quantity of joints, what has to come out first and how the joints are reached. Call for a quote when you’re ready.

Why appoint us

  • Standard and matched colours in many product ranges
  • CHAS accredited contractor
  • Workmanship guaranteed for 12 months
  • RAL and finish matching where the product range allows

Take a look at how commercial sealant jobs are priced or our accreditations and insurance.

Warehouse floors and decks around New Charlton

The 3 miles around New Charlton take in at least three named trading estates, business parks or retail parks. Sites like these are full of saw-cut floor joints, yard slabs and car park joints. 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.

Hospitals like Queen Elizabeth Hospital (1.1 miles south-east of New Charlton) have multi-storey or surface car parks whose joints carry vehicles round the clock. Retail parks like Stone Lake Retail Park, under half a mile to the south-west of New Charlton, have long runs of car park and yard joints taking daily traffic.

New Charlton is about 2 miles north-east of Greenwich, in Greater London. Any commercial site in New Charlton is covered, for single jobs and planned programmes alike. 764 places across Greater London fall within our area, including New Charlton. We also cover London, around 6 miles from New Charlton.

Work on movement joints is covered throughout SE7, SE18 and E16, for business premises of every kind. Among the streets we cover are Floyd Road, Priolo Road and Hasted Road, and sites on any of them can send details for a fixed quote. Just outside New Charlton, we also work in Charlton (1 mile south-east), Westcombe Park (1 mile south-west), Woolwich (1 mile east), Vanbrugh Park Estate (1 mile south-west) and Maze Hill (2 miles south-west). Further afield, our area takes in London (6 miles west), City of Westminster (8 miles west), Marylebone (8 miles west), Kensington (10 miles west), St Pancras (7 miles west) and Shoreditch (5 miles north-west).

What’s near New Charlton

In New Charlton, that means premises near Thames Barrier Park, Thorntree Primary School and The Victoria pub. There’s a railway station in New Charlton itself: Charlton station. Other landmarks nearby include Charlton Athletic Museum (under half a mile south) and Greenwich Castle (1.9 miles south-west). The countryside around New Charlton includes Gilbert's Pit.

Map of New Charlton © OpenStreetMap contributors

What the job involves on each surface

Car park decks and ramps

Deck and ramp joints take tyre loads, grit and de-icing salts. A trafficable sealant suited to the movement goes in with bays done in phases so the car park keeps running.

Internal floor movement joints

Forklift and pallet-truck wheels break unsupported joint edges. The right filler or sealant for the traffic and movement protects them flagging broken arrises before sealing.

Questions about New Charlton

Would you work within a site like Queen Elizabeth Hospital?

Yes. Healthcare sites are among the places we work. We follow the site’s permits, sign-in and infection-control procedures in every area.

Do you cover business parks and estates near New Charlton, such as Stone Lake Retail Park?

Yes. Our area takes in New Charlton and its surroundings, with estates and business parks such as Stone Lake Retail Park included. Photos and a short description are enough for a first look.

Can the building stay open while you work?

Yes, as long as we plan it. Tell us your site hours and access windows and we’ll plan around them.

Do you guarantee expansion joint work?

The 12-month guarantee applies to the workmanship. Tell us right away if a joint we sealed gives trouble in that time.

What happens if old sealant might contain asbestos?

Some older mastics, especially in pre-2000 buildings, can contain asbestos. Before we disturb old sealant in an older building, we ask to see the asbestos register or survey, and work stops until any suspect material has been tested. Removing asbestos is a job for asbestos specialists, not us.

Are your applicators CSCS-carded?

Yes. Should the site need card details in advance, let us know and we will send them with the quote.

Is any job too small?

Small jobs are welcome alongside larger packages. Photos and a description are enough to start.

From enquiry to sign-off

Diagnose, treat, sign off: every visit follows that pattern. First comes an inspection and agreement on scope, then the work is carried out to the specified product and detail, and we finish with a walk round so the work can be signed off. All of Greater London is in the ULEZ, and kerbside space in New Charlton can be scarce. Let us know about any on-site parking or loading arrangements when you send the job details.

  1. We assess the joints on site or from photos, noting widths and how each has failed.
  2. A fixed quote names the sealant we propose and its movement class.
  3. Phasing is agreed so decks, floors or entrances can stay in use where needed.
  4. We strip the old sealant or filler and prepare each face until it’s sound and dry.
  5. Depth is controlled with backing, the faces are primed where the maker calls for it, then the bead is laid and tooled.
  6. Finished joints are inspected, the cure time confirmed and the 12-month guarantee applies.

Before we start on site

  • Clear stock, furniture or equipment away from the joints
  • Point out any areas we must not close
  • Point out parking and an unloading spot

Quotes

The quickest route to a quote is a few photographs and the site postcode. Upload them with the quote form, or speak to us on 01277 525 020 or send details through our quote form if you’d rather talk the job through.

Get a quick quote

Advice

When it isn’t the sealant

Being straight saves everyone time. New sealant won’t cure:

  • Mechanical expansion joint covers, cover plates or proprietary joint systems (a specialist supplier’s job)
  • Leaks coming from the membrane rather than the joint seal
  • Changing the joint layout or spacing of a structure

If you’re not sure, just call 01277 525 020 or email us and we will give you a straight answer before you book.

Surfaces we seal

  • Cladding panel joints
  • Precast concrete panel joints
  • Blockwork control joints
  • Brickwork movement joints
  • Podiums and floor movement joints
  • Car park decks and ramps
Accreditations

Trusted. Accredited. Insured.