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

Facade Sealing contractors in Greengate

Facade joint and window perimeter sealing on commercial buildings in Greengate and across Greater London. CHAS accredited and fully insured, with a 12-month guarantee.

  • Weathered facade joints that have lost their grip
  • Damp patches beside frames after rain
  • Staining on stone next to old sealant
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
CHAS accredited
£5m PL insurance

Facade sealing near Greengate

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

Facade sealing for commercial buildings in Greengate

Weather decides a lot in facade sealing. The sealant needs a dry joint and temperatures inside the maker’s limits, and cold, damp starts can delay work. We build that into the programme and tell you if the forecast changes the plan. If you have gaps between rainscreen or cladding panels and failed seals around shopfront and entrance frames, we can put it right, whatever the surface. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: in Greengate, that means joint design, primers and backing rod as standard.

Building sites in London tend to be tight: limited storage, booked deliveries and access shared with other trades. Mastic is usually one of the last trades on each elevation or floor, so we keep to the programme and the order of trades the site sets.

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.

The Mastic Doctor team beside their liveried vans in front of an office building
Place
Greengate (E13, E6, E16)
Region
Greater London
Cover
12 months on every job
Quote
A fixed quote before we start
Call
01277 525 020
Page updated
3 November 2026

Do you need facade sealing in Greengate?

New sealant run over old sealant rarely holds. Cured silicone won’t accept a new silicone bead, so the new bead peels away within a season or two.

Things that usually lead to an enquiry:

  • Gaps between rainscreen or cladding panels
  • Perimeter sealant that has split or peeled away
  • Perimeter joints where frames meet the structure
  • Patch repairs that keep failing

Hospital estates such as Newham University Hospital, 0.6 miles to the south-east of Greengate, tend to grow and change in phases, often next to occupied wards, so facade and perimeter sealing has to fit the estates team’s plan.

What to look for in a quote

  • Health and safety accreditation such as CHAS
  • How they handle RAMS and site documents
  • Will CSCS-carded applicators be on site?
  • Is the sealant right for the movement and the substrate?

Our contractor checklist

Quoting for work in Greengate

There’s no standard rate for sealant work, since sites vary so much. What we take into account:

  • How accessible the joints are
  • Location, for remote and island sites
  • Phasing around occupants
  • Site requirements such as inductions and permits

No two sites price the same: joint size, product, access and site hours all play a part. A fixed quote follows once we understand the job.

What we need to price the job

The more we know, the firmer the quote. When you get in touch, include:

  • Specification clauses that apply
  • Asbestos survey details if the building is older
  • Clear photos of the problem areas
  • Any dates the work must fit around

Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to call 01277 525 020 or email us with what you know.

Aftercare for building managers

To get the most from the new sealant:

  • Share access with other external trades
  • Keep pressure washers away from fresh sealant
  • Never let anyone seal over old sealant
  • Check the asbestos register before old mastic is disturbed

Hold back any cleaning crew until the joints have had their stated cure time. Keep high-pressure jets and strong chemicals away from new sealant and tell your cleaning contractor.

Get the joint design right when resealing: correct depth, proper backing and a sealant that can take the movement. Repeating a faulty detail just repeats the failure.

What happens if it’s left?

If access is already up for other work, resealing at the same time makes sense. Combine it with planned external works and you only arrange access once, which is often the biggest saving. Repeat call-outs disrupt occupied London buildings, so cutting the old sealant out fully and doing it right once is the better route.

The product called for affects the cost, as does the preparation each joint needs, from cutting out to priming and backing rod. Access, phasing and site rules also count.

Why us?

  • Work to your specification and the manufacturer’s guidance
  • Matching to RAL references, product permitting
  • Clear, fixed quotes
  • Colour options checked against the specified product

Take a look at our cost guide and our accreditations and insurance.

Questions about Greengate

Does your area include sites such as Mint Business Park, near Greengate?

Yes. Our area takes in Greengate and its surroundings, with estates and business parks such as Mint Business Park included. Photos and a short description are enough for a first look.

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

Yes. Booked loading bays, goods lifts and permit-to-work systems are normal for London jobs. Send the building rules and access times with your enquiry. The ULEZ covers the whole of Greater London, which we allow for

What will the job cost?

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

Do you guarantee your work?

Yes, for 12 months. If a joint fails because of how we installed it, we come back and put it right.

How long do sealant joints last?

Nobody can honestly give a figure in years, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular inspection is the best way to catch problems early.

Can you work on upper floors?

That comes down to the access arranged for the job. Share what access exists or is planned when you send details.

Can weather delay the job?

Outside, yes. Sealant needs a dry joint and a temperature within the product’s range, so frost, rain or cold mornings can delay outside work. Internal work is rarely affected.

General trades versus a specialist

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.

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.

How a job runs

The first thing on site is a walk round with your contact, 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. Most London premises stay occupied while we’re on site, so zones and timings are agreed with whoever manages the building. Areas are handed back as each section is finished.

  1. Photos, drawings or a visit tell us about the joints and the access.
  2. We confirm the joint type, movement and the specified product.
  3. The existing bead comes out in full and the joint faces cleaned.
  4. Primer goes on where the product data asks for it.
  5. Backing rod is fitted and the new sealant gunned in and tooled.
  6. The finished joints are checked with you.

Getting the site ready

  • Tell staff and tenants when we will be in
  • Send any specification or drawings in advance
  • Clear stock, furniture or equipment away from the joints

Getting a fixed quote

Send us photos, drawings or a joint schedule and a fixed quote comes back to you. If the job needs a look first, we’ll arrange a site visit.

Ask for a quote

Related advice

Facades, frames and programmes in Greengate

As part of Greater London, Greengate is inside the ULEZ, which applies to every van on site. Add booked deliveries and tight storage, and the mastic package needs planning with the site team. A 2-mile radius around Greengate takes in a good number of hotels. When hotels extend or refit, the work is typically squeezed between peak periods, mastic included.

Work at a hotel such as Prince Regent Hotel, 1 mile to the south of Greengate, tends to be programmed around bookings, mastic included. On a campus such as University of East London, which lies east of Greengate, new teaching buildings and residences are usually built and refurbished around the academic year.

Greengate is about 4 miles east of Whitechapel, in Greater London. Across the E13 postcode area, it works the same way: send details, get a fixed quote, we seal, and the work is guaranteed. 764 places across Greater London fall within our area, Greengate among them. We also cover London, some 6 miles away.

We cover the E13, E6 and E16 postcode districts for facade joints. Buildings on May Road, Emma Road and Cave Road are within our area. Close to Greengate, our area also takes in 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). Nearby towns on our patch 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).

Near you in Greengate

Locally, jobs take us to sites close to Coach And Horses Public House, Lister Community School and West Ham Park. The nearest railway station is West Ham station, roughly 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). Open spaces near Greengate include Old Ford Island and Tower Hill.

Map of Greengate © OpenStreetMap contributors
Accreditations

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