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

Mastic Sealing in London Docklands

Mastic sealing in London Docklands, backed by over 20 years in commercial sealing. Fully insured and CHAS accredited.

  • Damp patches beside frames
  • Old repairs sealed over failed mastic
  • Occupiers reporting cold air round windows
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Signed off, with 12 months’ guarantee.
South East, London & Scotland
CHAS accredited
£5m PL insurance

Mastic sealing for London Docklands sites

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

Why it’s worth doing now in London Docklands

Failed perimeter mastic lets cold air in around frames and the windows typically get the blame. Resealing the perimeters is often the simpler fix where the frames themselves are sound. Repeat call-outs disrupt occupied London buildings, so cutting the old sealant out fully and doing it right once is the better route.

Quantities, awkward access and phased working all shape the price. So do site requirements such as inductions and permits, along with the time of year for external work.

Why clients in London Docklands choose us

  • Fully insured, including public liability cover
  • Work to your specification and the manufacturer’s guidance
  • One number for every site we cover
  • Colour agreed before work starts

See our cost guide or how we’re accredited.

How we handle mastic sealing in London Docklands

For over 20 years we have resealed joints for owners, agents and landlords. Our applicators are CSCS-carded, and the work is backed by public liability insurance. Each building we complete carries a 12-month guarantee on our workmanship. We work on communal entrances and stairwells, window and door perimeters on blocks and external wall and movement joints, and the usual reasons a site gets in touch are worn sealant at communal door frames and the same joint failures repeated across a portfolio. A single leaking joint is often how a building in London Docklands first comes to us: we check the joints around it and give you an honest view of what needs doing now and what can wait.

Planning mastic work on a London block means notices to residents, access to flats and agreed working areas. We work to the agent’s notice and access plan, so residents know what’s happening.

Our workmanship is guaranteed for 12 months. If our installation lets you down in that time, we return and fix it.

The Mastic Doctor team beside their liveried vans in front of an office building
Where
London Docklands (E14, SE16, E22)
Wider area
Greater London
Guarantee
12 months on our workmanship
Quote
A fixed quote before we start
Phone
01277 525 020
Updated
3 November 2026

Cost factors for mastic joints

Sealant work doesn’t have a standard rate, because every site is different. What we take into account:

  • Induction, permit and paperwork requirements
  • The total length or number of joints
  • Backing rod, priming and other preparation
  • How accessible the joints are

The work involved drives the cost: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a fixed quote.

Sending details for a quote

Whether it’s one area or a whole building, the same details help:

  • Your programme or deadline
  • The asbestos register, for older buildings
  • Approximate linear metres or a joint schedule
  • The postcode of the building

Specifications, drawings and tender packages are welcome with any enquiry, and we will price the work to it. For smaller jobs, photographs and a description will do.

From enquiry to sign-off

In a busy building, we agree a sequence with your contact so the disruption stays in one area at once. Each section is protected, cleaned back and sealed, then handed back before we move to the next. Most London premises stay occupied while we are on site, so zones and timings are agreed with whoever manages the building. Phased work keeps the rest of the building in use.

  1. We check the asbestos register for older buildings and look at the joints.
  2. A fixed quote covers the joints, products and order of work.
  3. We strip out the old sealant.
  4. The joints are prepared and resealed with the right product.
  5. Buildings are completed in turn.

Getting the site ready

  • Agree which areas must stay open
  • Let building users know which areas are affected
  • Point out parking and an unloading spot

Getting a fixed quote

To get a fixed quote, ring 01277 525 020 or use the quote form with the site address and an outline of the work. Our quote form is another easy route.

Ask for a quote

Read more

Your questions answered

Can work in a care setting near London Docklands go ahead while residents are there?

Yes. We work around residents’ routines, a room or two at a time. We follow the home’s own procedures throughout.

Do you work for managing agents with blocks near Canary Wharf station?

Yes. Managing agents, landlords, property factors and housing associations are who this service is for. We work to your notice and access arrangements.

Do you check for asbestos in old sealant?

Some mastics in pre-2000 buildings contain asbestos. We ask for the asbestos register or survey before work starts, and if it’s suspected, work stops until it’s tested.

Can you follow the specification on our project?

Yes. The specification and the manufacturer’s installation guidance are what we work to, and any queries are raised before we start.

How many days will you need on site?

We plan the time on site around your programme and access. You’ll have an expected duration with the quote.

Do you seal on top of existing sealant?

No, never. Overlaying old sealant is a frequent cause of early failure, so it all comes out first.

Do you cover London Docklands?

Yes. Sites across London Docklands are covered, and the same phone number covers every area.

What we can’t put right

A few problems need another trade or a different fix, and we point that out rather than sealing over them:

  • Leaks through the frame itself rather than the perimeter
  • Substrate edges that need repairing first
  • Misted or failed double-glazed units

If you’re not sure, just speak to us on 01277 525 020 or send photos by email and we’ll give you a straight answer before you book.

Where we work in London Docklands

  • External wall and movement joints
  • Communal kitchens and washrooms
  • Shopfronts below residential blocks
  • Balcony and threshold joints
  • Window and door perimeters on blocks
  • Communal entrances and stairwells

Mastic sealing in London Docklands: the local picture

Blocks in London are usually run by managing agents, landlords or housing associations, with residents to notify and access to arrange. Our programme follows the access you agree with residents. There are four care or nursing homes within about 2 miles of London Docklands. Frame mastic on care buildings is best renewed elevation by elevation, with the manager deciding timings.

If you own or manage units on a site such as Poplar Business Park (under half a mile north-east of London Docklands), failed mastic on frames, door surrounds and external joints can be dealt with unit by unit. If you manage student housing near a university such as University of Sunderland in London, under half a mile south-east of London Docklands, the summer turnaround is the time for mastic.

London Docklands is about 2 miles north-west of Greenwich, in Greater London. If you are looking for mastic sealing in London Docklands, we can help, as we do across Greater London. Across Greater London, 764 places are covered, London Docklands among them.

We take on mastic joints across the E14, SE16 and E22 postcode area, for business premises of every kind. We cover commercial and managed buildings on Castor Lane, Cassilis Road and Dockyard Lane. London Docklands sits on or close to the A1206 and A1261, useful when we plan access and materials. Nearby places we also cover include Canary Wharf (1 mile west), Poplar (1 mile north), Heron Quays (1 mile south-west), Coldharbour (1 mile east) and Blackwall (1 mile east). Bigger towns within reach include London (3 miles west), City of Westminster (6 miles west), Marylebone (6 miles west), Kensington (8 miles west), St Pancras (5 miles west) and Shoreditch (3 miles north-west).

Around London Docklands

Recent enquiries here include premises near Sir John McDougall Gardens, Our Lady and St Joseph Catholic Primary School and The Ledger Building pub. London Docklands has its own railway station: Canary Wharf station. A little further out are Greenwich Castle (2 miles south) and Surrey Quays Shopping Centre (1.4 miles south-west). Open spaces near London Docklands include St. James's Park Lake and Lavender Pond.

Map of London Docklands © OpenStreetMap contributors

What we are called out for in London Docklands

UV and rain age external sealant. It stiffens, stops stretching and cracks, especially on south and west faces.

Common reasons buildings call us in:

  • A mix of products and colours from past repairs
  • Mastic failing across several blocks on an estate
  • Open joints in brickwork or panels
  • Damp patches beside frames

If you look after a block within reach of Canary Wharf station, which lies north of London Docklands, frame and balcony mastic can be renewed on one programme.

Comparing quotes

  • What site paperwork they can supply
  • Can the work be phased to keep areas open?
  • Who will actually carry out the work
  • What level of public liability insurance do they hold?

Our contractor checklist

Doing it in-house

A short, simple internal joint is often within reach of a maintenance team. Where it goes wrong is preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.

For most general trades, sealant is a sideline. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint.

Accreditations

Trusted. Accredited. Insured.