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

Mastic sealant contractors in Stratford

Work needed on a mastic joint in Stratford? We look at it, seal it with the right product and hand it over with a 12-month guarantee.

  • Cracked, hardened mastic round windows on a block
  • Damaged joints in communal entrances and corridors
  • Movement joints with sealant missing
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
12-month guarantee on our workmanship.
London, the South East & Scotland
CHAS accredited
£5m PL insurance

Mastic sealing for Stratford sites

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

Blocks and managed buildings in Stratford

Stratford has 25 care or nursing homes no more than 2 miles away. Care home owners need frame and external mastic kept sound without unsettling residents. In London, mastic work on a block goes through the managing agent or landlord, with notice to residents. We work to your notice and access plan.

Property owners at sites such as Maryland Industrial Estate (0.5 miles north-east of Stratford) can have mastic renewed between lettings. If you look after a block within reach of Stratford (London) station, less than half a mile south-west of Stratford, frame and balcony mastic can be renewed on one programme.

Stratford is about 5 miles north-east of London, in Greater London. We cover Stratford, with the same fixed quotes and 12-month guarantee as everywhere else. Stratford is one of 764 places we cover in Greater London.

Postcode districts covered here: E15, E20 and E3. Buildings on Gay Road, Cam Road and Eve Road are within our area for mastic joints. If your building is just outside Stratford, we cover Maryland (1 mile east), East Village (1 mile north-west), Temple Mills (1 mile north-west), West Ham (1 mile south-east) and Hackney Wick (1 mile west). A short drive away, we cover London (5 miles south-west), City of Westminster (7 miles west), Marylebone (6 miles west), Kensington (9 miles west), St Pancras (5 miles west) and Shoreditch (3 miles west).

Near you in Stratford

Around Stratford, our work takes us to commercial buildings near Carpenters Primary School, The Two Puddings pub and Sarah Bonnell School, among other places. There’s a railway station in Stratford itself: Stratford (London) station. Other landmarks nearby include Stratford Centre (under half a mile south-east) and V&A East (0.5 miles west). Not far away are Hollow Pond and Old Ford Island.

Map of Stratford © OpenStreetMap contributors

About our mastic sealing in Stratford

Different joints need different sealants. Low-modulus neutral-cure silicone suits many window perimeters and external movement joints, and MS polymer sealants stick well to many substrates and often take paint. We will confirm the colours available for the specified product. We work on balcony and threshold joints, shopfronts below residential blocks and communal entrances and stairwells, and what we are called in for most is window mastic that has split and shrunk and draughts at frames across a block. For commercial sealant work in Stratford, you deal with one contact from quote to sign-off, whether it’s one building or several.

Planning mastic work on a London block means notices to residents, access to flats and agreed working areas. Work is planned with the agent so residents get notice and access is arranged in advance.

The 12-month guarantee covers our workmanship: preparation, application and finish. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.

Place
Stratford (E15, E20, E3)
Wider area
Greater London
Guarantee
A 12-month guarantee
Quotes
Quoted before any work starts
Telephone
01277 525 020
Page updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

What affects the price in Stratford

What shapes the price:

  • How much existing material needs removing
  • The site’s rules and procedures
  • Location, for remote and island sites
  • The size and state of each joint

Access can matter as much as the joints themselves: easy-to-reach joints are quicker than those that need equipment to get to. Tell us how the joints are reached and call for a quote.

What we need to price the job

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

  • A wide shot and a close-up of the area
  • When you need the work done
  • The asbestos register, for older buildings
  • Any specification or named product

If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price the work to it. Smaller jobs need nothing more than photographs and a few notes.

Do you need mastic sealing in Stratford?

Sunlight and weather break mastic down over time. It stiffens, stops stretching and cracks most of all on the sunniest and most exposed elevations.

Site and facilities staff are often the first to spot these:

  • Draught complaints from residents or tenants
  • Worn sealant at communal door frames
  • Complaints coming in block by block
  • Leaks at window and door perimeters

Historic properties like Sutton House (to the west of Stratford) show the age of some local stock, where frame mastic must suit soft brick or stone.

Comparing quotes

  • Their pre-qualification and accreditations
  • What level of public liability insurance do they hold?
  • How long is the guarantee, and what does it include?
  • How they handle RAMS and site documents

Choosing a commercial sealant contractor

Keeping the joints sound

Once the work is signed off, these steps help:

  • Plan resealing building by building rather than complaint by complaint
  • Make it easy for occupiers to report draughts
  • Look at the sunniest and most exposed elevations first
  • Reduce knocks to communal area joints

Our workmanship is covered for 12 months, so report any failure in that time. After that, regular inspection keeps the programme on track.

Planned resealing is easier to budget than emergency repairs. A programme can start with the worst buildings and work down the list.

When it isn’t the sealant

A proper diagnosis includes knowing what sealant can’t do. You’ll hear from us if the cause turns out to be one of these:

  • Leaks through the frame itself rather than the perimeter
  • Misted or failed double-glazed units
  • Old mastic suspected of containing asbestos, which must be tested and dealt with by a specialist first

Not sure which it is? You can ring 01277 525 020 or email drawings and photos and we’ll tell you honestly before you book.

Joints and surfaces we work on

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

Building owners, agents and FMs in Stratford

CHAS accredited and a Constructionline member, we are straightforward to vet for your supplier list. Our insurance certificate can be sent along with the quote.

Building owners and managing agents use us on sealant work across single buildings or whole portfolios. One quote can cover more than one site, which keeps the paperwork simple.

Diagnose, treat, sign off

Diagnose, treat, sign off: that’s the shape of every visit. First comes an inspection and agreement on scope, then we prepare and seal each joint with the specified product, and we finish with a walk round so the work can be signed off. Most London premises stay occupied while we are on site, so we agree zones and timings with the building or facilities manager. Areas are handed back as each section is finished.

  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. Dates and areas are agreed so occupiers can be told.
  4. Old mastic is removed and the joint faces prepared.
  5. Joints are resealed and tooled.
  6. Each building is checked and signed off with the 12-month guarantee.

Getting the site ready

  • Let us know about inductions and permits
  • Confirm the product named in the specification
  • Point out any areas we must not close

Getting a fixed quote

We quote a fixed sum against the scope you give us, so you know the figure before anyone is on site. To ask for one, give us a call on 01277 525 020 or email drawings and photos.

Ask for a quote

Advice

Questions about Stratford

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

Yes. Care settings are planned area by area, at times agreed with the home. Noise and disruption are kept to a minimum.

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’ll plan accordingly.

How do you choose the sealant?

Where there’s a specification, we use the product it names. Otherwise, we recommend a product to suit the joint’s movement, the substrate and the conditions, following the manufacturer’s guidance.

When can the area be used after sealing?

That comes down to the sealant and the temperature. Some products skin over quickly but need longer to cure fully, so we’ll confirm the curing time on the day.

Does weather matter for sealant work?

For external joints, yes. The joint has to be dry and within the product’s temperature range, so frost, rain or cold mornings can delay outside work. Internal work is rarely affected.

Do you cover Stratford?

Yes. We take on work across Stratford.

How long does a job like this take?

We plan the time on site around your programme and access. We’ll give you an estimate of time on site when we quote.

Accreditations

Trusted. Accredited. Insured.