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

Expansion Joint Sealing in Falconwood

Expansion and movement joint sealing in walls, decks and floors in Falconwood. CHAS accredited and fully insured, with a 12-month guarantee.

  • Movement joints with split or torn sealant
  • Car park joints leaking onto vehicles below
  • Sealant pulling off the joint face
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
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
Constructionline member
Fully insured: £5m PL

Expansion joint sealing near Falconwood

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

Owners, agents and contractors

Building owners and managing agents use us on everything from one building to a spread of sites. Several sites can go on one quote, so there’s one set of paperwork to deal with.

Whether you’re a managing agent, a property factor or an owner’s representative: send the details, accept a fixed quote, and we carry out and guarantee the work. Keys, access and contacts can be agreed in advance.

Expansion joint sealing for commercial buildings in Falconwood

Width, depth and product all have to work together. The joint has to be wide enough for the expected movement and the sealant’s movement capability. For wider joints, the width-to-depth ratio is often around 2:1, as the manufacturer advises. We work on brickwork movement joints, car park decks and ramps and cladding panel joints, and what we are called in for most is previous reseals laid over old sealant and hardened, cracked sealant on exposed facades. One point of contact handles commercial sealant work in Falconwood from the first photos to the final walk-round, for single jobs and planned programmes alike.

Distribution and trade units on London’s edges, and deck car parks across the city, hold most of its floor and slab joints. In Falconwood, as everywhere in London, access, loading and the ULEZ all come into the plan.

We stand behind the joints we seal: 12 months, guaranteed. That covers our preparation and application, and if something we did falls short, we return to it.

Mastic Doctor team members lined up next to their branded vans outside an office building
Location
Falconwood (DA16, DA15, SE9)
Region
Greater London
Guarantee
12 months on every job
Quote
Quoted before any work starts
Phone
01277 525 020
Page updated
3 November 2026

Why act early in Falconwood

Resealing is typically the answer, not replacing the element. Where the edges are sound, cutting out and resealing is enough. We’ll flag where edges need repair before sealing. Failed sealant in a building in Falconwood can quickly affect neighbours, tenants or the floor below. Dealing with it early is simpler for everyone.

Larger quantities, tricky access or phasing all shape the price. So do site requirements such as inductions and permits.

Why us?

  • Colour options checked against the specified product
  • Our applicators hold CSCS cards
  • Workmanship guaranteed for 12 months
  • One number for every site we cover

Read our cost guide and how we’re accredited.

What sealant work can’t fix

Some faults sit outside our scope, and we say so rather than covering them up:

  • Concrete or masonry repairs along the arrises
  • Mechanical expansion joint covers, cover plates or proprietary joint systems (a specialist supplier’s job)
  • Failed waterproofing membranes on podiums, roofs or decks (a waterproofing specialist’s job)

If in doubt, give us a call on 01277 525 020 or email us and we will say what we think.

What we seal

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

Quoting for work in Falconwood

We price every job individually. The things that drive the figure:

  • Site requirements such as inductions and permits
  • Removal of failed or old sealant
  • The product specified
  • The total length or number of joints

No two sites price the same: joint size, product, access and site hours all play a part. Send the details and a fixed figure follows.

What to include in your enquiry

A few photographs plus some basic facts will normally do. Please tell us:

  • Rough lengths or quantities, or drawings if you have them
  • The asbestos register, for older buildings
  • Whether the building will be occupied during the work
  • Any dates the work must fit around

Photos, drawings or a schedule of the joints and a fixed quote comes back to you. Where a site visit makes more sense, we will arrange one.

Traffic, movement and joints around Falconwood

Few London car parks or loading bays can be taken out of use for more than a short spell, which is why we work a few bays at a time. Less than 3 miles from Falconwood there are at least three named estates and business parks. Floors, loading bays and yards on sites like these are where floor and movement joints work hardest.

Across sites such as Gateway Business Centre (2.3 miles north of Falconwood), floor and movement joints can be sealed in phases so units keep working. Hospitals like Memorial Hospital, 1.5 miles west of Falconwood, have multi-storey or surface car parks whose joints carry vehicles round the clock. Campuses like University of Greenwich Avery Hill Campus (1.2 miles south-west of Falconwood) mix old and new buildings, with movement joints wherever they meet.

Falconwood is about 2 miles north-east of Eltham, in Greater London. Our applicators travel to Falconwood for work on movement joints. Falconwood is one of 764 places in Greater London on our list. For work in that direction, see our London page (9 miles or so).

We take on movement joints across the DA16, DA15 and SE9 postcode area. Among the streets we cover are Hook Lane, Gordon Road and Kent Avenue, and sites on any of them can send details for a fixed quote. We also cover Blackfen (1 mile south), East Wickham (1 mile north), Avery Hill (1 mile south-west), Shooter's Hill (1 mile north-west) and New Eltham (2 miles south-west) for movement joints. A short drive away, we cover London (9 miles west), City of Westminster (11 miles west), Marylebone (11 miles west), Kensington (13 miles west), St Pancras (10 miles north-west) and Shoreditch (9 miles north-west).

Around Falconwood

In Falconwood, that means premises near The Plough and Harrow pub, Shoulder of Mutton Green and Harris Academy Falconwood and the streets around them. For rail, the closest station is Welling station, roughly 0.5 miles north-east. A little further out are Broadway Shopping Centre (2.2 miles east) and Memorial Hospital (1.4 miles north-west). Not far away are The Tarn and Summer Hill.

Map of Falconwood © OpenStreetMap contributors

Keeping the joints sound

To get the most from the new sealant:

  • Keep racking legs and heavy point loads off floor joints
  • Report split or peeling joint sealant early
  • Check joints after long freezing spells
  • Clear dirt from joint lines during routine cleaning

Grit is the slow enemy of a joint seal. Grit trodden or driven into the joint works at the surface until it tears, especially on car park decks and warehouse floors. A routine sweep is the simplest protection.

On a multi-storey car park, a failed joint typically shows up as a leak onto the deck underneath. That water often carries de-icing salts with it. Resealing early limits the damage.

From enquiry to sign-off

We begin with a short walk round with whoever looks after the building, to confirm the scope, the order of work and any areas we must keep clear. After that, any old or failed material is removed, each joint is prepared and the new sealant goes in. In Falconwood, most buildings stay in use during the work, so zones and timings are agreed with whoever manages the building. Phased work keeps the rest of the building in use.

  1. We assess the joints on site or from photographs, 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. The failed seal is cut out and both joint faces cleaned back to sound material.
  5. Backing rod or bond-breaker sets the depth, primer goes on where specified, and the sealant is applied and tooled.
  6. We check each joint with you, confirm the cure time and sign off under our 12-month guarantee.

Before we start on site

  • Tell staff and tenants when we will be in
  • Point out parking and an unloading spot
  • Tell us which areas need to stay in use

Request a quote

A handful of photos and a postcode is the fastest way to a quote. Upload them with the quote form, or call 01277 525 020 or email a schedule or drawings to discuss it first.

Get a price

Advice

Your questions answered

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

Yes. We work in healthcare settings as well as offices and schools. We follow the site’s permits, sign-in and infection-control procedures in every area.

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

Yes, most London buildings have access rules of some kind, and we plan around them. Send the building rules and access times with your enquiry. The ULEZ covers the whole of Greater London, which we allow for

Are you fully insured?

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

What will the job cost?

Each job is quoted on its own details. For yours, ring 01277 525 020 or email drawings and photos with a description of the work.

Who decides which product is used?

The specification comes first, if there is one. Without one, the joint decides: its movement, its surfaces and what it has to cope with.

Is any job too small?

We quote for single jobs as well as large packages and programmes. Photos and a description are enough to start.

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.

Accreditations

Trusted. Accredited. Insured.