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

Mastic sealant contractors in Greengate

Our CSCS-carded applicators take on mastic sealing for building owners, managing agents and housing associations in Greengate. Send details for a fixed quote.

  • Damaged joints in communal entrances and corridors
  • No planned programme for sealant
  • Brittle perimeter mastic across a building
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
London, the South East & Scotland
Constructionline member
Fully insured: £5m PL

Mastic sealing near Greengate

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

Mastic sealing for commercial buildings in Greengate

Mastic Doctor has sealed joints on commercial and residential blocks since 2005. Every applicator holds a CSCS card and we hold public liability insurance. Resealed mastic joints in Greengate carry our 12-month guarantee. If you have repeated reactive repairs to the same buildings and movement joints with sealant missing, we can put it right, whatever the surface. Looking for mastic applicators who cover Greengate? We have been sealing commercial buildings since 2005, CHAS accredited and a Constructionline member.

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.

We sign every job off with a 12-month guarantee. The promise is simple: if our work fails within that year, we put it right.

Place
Greengate (E13, E6, E16)
Wider area
Greater London
Guarantee
12 months on our workmanship
Quotes
A fixed quote before we start
Call
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

What the job involves on each surface

Planned maintenance

Adding mastic to planned maintenance avoids reactive repairs and spreads the work.

Commercial and mixed-use buildings

Commercial occupiers usually stay open during the work so the work is phased.

When to bring in a specialist

Site maintenance staff can often handle a short internal joint. The usual problems come from preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.

General builders and handymen seal joints, but it isn’t their main trade. A specialist prepares properly, controls joint depth and picks a product with the right movement class, which is what makes a joint last.

What sealant work can’t fix

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
  • Roof leaks, gutters or failed flashings that aren’t sealant joints
  • Broken glass or failed sealed units

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

Where we work in Greengate

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

How the quote is worked out

Each job is priced on its own details. The things that drive the figure:

  • Quantities, in metres or numbers
  • Access and working height
  • Whether old sealant has to be cut out first
  • Distance, for remote addresses

Pricing mastic joints depends on how many there are, their condition and the access, and any specification that applies. Call for a quote.

What to include in your enquiry

It doesn’t need to be a full survey. These details are enough to start:

  • Asbestos survey details if the building is older
  • Photos of the joints, close up and from further back
  • Your programme or deadline
  • How the joints are reached, and at what height

If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price the work to it. For smaller jobs, photos and a description will do.

Questions about Greengate

Do you work in London buildings with loading restrictions?

Yes, we plan every London job around the building’s own access rules. Say when the building is occupied and when it’s quiet, and we will plan accordingly. We allow for the ULEZ, which covers every borough

Can you quote for a block close to West Ham station?

Yes. Managing agents, landlords, property factors and housing associations are who this service is for. Photos of each elevation help us quote accurately.

Can you follow the specification on our project?

Yes. The specification and the manufacturer’s installation guidance are what we work to, and we raise anything unclear before work begins.

When is resealing likely to be due?

There isn’t a single answer, since movement, weather, cleaning and use all affect it. Regular checks let you plan resealing before leaks or damage.

What guarantee do you give on resealing?

Every building we reseal has a 12-month guarantee. It applies to our workmanship rather than damage or problems with the frames.

How long does a job like this take?

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

How do you choose the sealant?

Where there’s a specification, we use the product it names. If not, we choose for the movement, the surfaces and the conditions, in line with the manufacturer’s guidance.

Building owners, agents and FMs in Greengate

Agents, factors and owners’ representatives all follow the same route: send the details, accept a fixed quote, and we carry out and guarantee the work. Keys, access and contacts can be agreed in advance.

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

Frames, entrances and external joints in Greengate

London blocks come with residents to inform, access to agree and often a concierge or estate office to work with. We work to your notice and access plan. 19 care or nursing homes sit less than 2 miles from Greengate. Care home owners need frame and external mastic kept sound without unsettling residents.

For owners of several units at places like Mint Business Park (0.8 miles south of Greengate), one programme can deal with frame and external mastic across the lot. Site managers at schools like Southern Road Primary School can fit frame mastic into the summer works. Churches, halls and community buildings such as St Andrew's Church are looked after by trustees and committees like any other owner, and their frames, doors and external joints need mastic renewed in time.

Greengate is about 4 miles east of Whitechapel, in Greater London. Looking for mastic sealing in Greengate? We can help, as we do across Greater London. 764 places across Greater London fall within our area, Greengate among them. Sites around London have their own page, roughly 6 miles from Greengate.

We cover the E13, E6 and E16 postcode districts for mastic joints. Buildings on May Road, Emma Road and Cave Road are within our area for mastic joints. If your building is just outside Greengate, we cover Plaistow (1 mile south-west), Upton Park (1 mile north-east), Upton (1 mile north), West Ham (1 mile north-west) and Canning Town (1 mile south). Bigger towns within reach include London (6 miles west), City of Westminster (8 miles west), Marylebone (8 miles west), Kensington (10 miles west), St Pancras (6 miles west) and Shoreditch (5 miles west).

Around Greengate

We work on buildings around Coach And Horses Public House, Lister Community School and West Ham Park. Greengate’s nearest station is West Ham station, about 1 mile west of the centre. Nearby you will also find West Ham United Football Club Museum (0.6 miles north-east) and Stratford Centre (1.5 miles north-west). For a walk, there’s Old Ford Island and Tower Hill.

Map of Greengate © OpenStreetMap contributors

Our process

We schedule the visit to fit the site hours and access windows you give us. While we are working, the area stays contained and tidy, and your contact hears from us before we move to the next area. For a job in Greengate, access comes first: booked loading, goods lifts, the building’s permit system and a spot to keep materials. Give us the hours we can be on site and we’ll schedule to suit.

  1. We inspect each building and record the joints that have failed.
  2. You get a fixed quote, per block or for the whole programme.
  3. We agree the programme and dates with you.
  4. Failed sealant is removed and the faces prepared.
  5. New sealant goes in with backing rod and primer where needed.
  6. Each building is checked and signed off with the 12-month guarantee.

Before we start on site

  • Have the specification and drawings to hand
  • Flag any permit to work we’ll need
  • Agree which areas must stay open

Request a quote

Photos, drawings or a schedule of the joints are often enough for a fixed quote. If the job needs a look first, we will arrange a site visit.

Get a price

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