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

Holloway Down facade sealing

Facade joint and window perimeter sealing on commercial buildings throughout Holloway Down and nearby, carried out by CSCS-carded applicators. Fully insured and CHAS accredited.

  • Previous reseals run over old sealant
  • Perimeter sealant that has split or peeled away
  • Gaps between rainscreen or cladding panels
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
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
South East, London & Scotland
CHAS & Constructionline
£5m public liability

Facade sealing for Holloway Down sites

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

Facade sealing in Holloway Down, done properly

Installing framed glazing systems isn’t part of our work. What we seal are the joints around them: perimeter joints where frames meet the structure, panel joints and window perimeters. We work on window and door perimeters, perimeter joints where frames meet the structure and stone and brick facade joints, and what we’re called in for most is sealant pulling away from frames or panels and hard, chalky sealant that no longer flexes. Whether you call it commercial sealant work, mastic application or joint sealing, the work in Holloway Down is the same: the right product in a properly prepared joint.

Construction in a London area such as Holloway Down means working on constrained sites: small compounds, delivery slots and shared hoists and scaffold. Mastic is normally one of the last trades on each elevation or floor, so we keep to the programme and the order of trades the site sets.

The 12-month guarantee is for workmanship rather than wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we are clear about what is covered before work starts.

Where
Holloway Down (E11, E15, E7)
Region
Greater London
Guarantee
12 months on our workmanship
Price
A fixed quote before we start
Telephone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

How a job runs

Before we leave any area, the masking comes off, the area is cleaned and every joint is checked with your site contact. If an area should be left alone while the sealant cures, we say how long and put signs out. Planning a London job such as one in Holloway Down starts with access. Send the building rules and access times with your enquiry.

  1. We plan access and the order of elevations with the client.
  2. We only seal when joints are dry and within the product’s temperature range.
  3. Each joint is cut out and the edges inspected.
  4. Faces are cleaned, primed where needed and backed.
  5. Sealant is gunned in and tooled hard onto both faces.
  6. Once signed off, the work carries our 12-month guarantee.

Getting the site ready

  • Agree which areas must stay open
  • Clear stock, furniture or equipment away from the joints
  • Tell staff and tenants when we will be in

Get a fixed quote

Quotes are fixed against the scope you send, so you know the figure before anyone is on site. To start the process, speak to us on 01277 525 020 or send details through our quote form.

Ask for a quote

Related advice

Questions we’re asked in Holloway Down

Will you plan work around the academic year at somewhere like University of East London?

Yes. We plan campus work around teaching, exams and residence turnarounds. We’re CHAS accredited and a Constructionline member, and paperwork such as RAMS is confirmed with the quote.

Do you work in London buildings with loading restrictions?

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.

What’s the quickest route to a quote?

You can use the quote form on this site; alternatively, call the office on 01277 525 020 or email us. Photos, drawings or a joint schedule help us quote quickly.

Does the weather affect the work?

Outside, yes. Sealant needs a dry joint and a temperature within the product’s range, so damp, frosty or very cold days can stop external work. Internal work is rarely affected.

Do you run new sealant over the existing bead?

No. Overlaying is a shortcut that peels away quickly. Our method is a full cut-out, cleaning, backing and a new bead.

Do you use silicone for external joints?

Low-modulus, neutral-cure silicone suits many facade and perimeter joints. Hybrid or MS polymer, polyurethane and polysulphide sealants suit others, as the specification or substrate requires.

Which sealant will you use?

A specification, where there is one, decides it. If there isn’t one, it comes down to the joint: its movement, its surfaces and what it has to cope with.

Why deal with it now?

Scaffold or access already on site makes resealing much simpler. Coordinating facade sealing with other external works avoids paying for access twice. In a London building, a failed joint rarely affects only one party: water travels through shared structures, and a small leak becomes a dispute between occupiers. Dealing with it early is simpler for everyone.

The work involved drives the cost: stripping out, preparation, sealing, access and phasing. Call for a quote.

What you get with us

  • Fully insured, including public liability cover
  • Constructionline member for supplier checks
  • Colours confirmed for the specified product
  • 12 months’ guarantee on every job

Read our cost guide or how we’re accredited.

Honest limits

Before quoting, we check that sealant is the right answer. It won’t put right:

  • Providing access systems for the work
  • Render or concrete edges that have broken away
  • Joints whose design needs changing by the specifier

If in doubt, ring 01277 525 020 or email drawings and photos and we’ll say what we think before you book.

Where we work in Holloway Down

  • Shopfront frames
  • Stone and brick facade joints
  • Window and door perimeters
  • Perimeter joints where frames meet the structure
  • Coping and flashing joints
  • Cladding panel joints

Different surfaces, different methods

Cladding panel joints

Panel joints on cladding and rainscreen systems take movement every day. We use a product rated for the movement and suited to the panel surface, as the specification sets out.

Perimeter joints at frames and structure

These frame-to-structure joints take a lot of movement and weather. They are cut out, cleaned, backed and resealed using a sealant classified for that use.

Mastic packages on Holloway Down sites

A good number of hotels sit less than 2 miles from Holloway Down. Hotel refurbishments often run to tight programmes between busy periods, and perimeter and sanitary sealant has to keep up. As part of Greater London, Holloway Down is inside the ULEZ, which applies to every van on site. Delivery slots and scarce storage shape how and when the mastic goes in.

Hotels like The Stratford Hotel London (0.8 miles south-west of Holloway Down) rarely close for long, so refurbishment mastic is phased floor by floor. For contractors at a college like DTK College (0.9 miles south of Holloway Down), perimeters and internal sealant are timed for the holidays. For contractors refurbishing units at places like Acacia Business Centre, less than half a mile to the north-east of Holloway Down, the mastic covers cladding panels, roller-door and window perimeters.

Holloway Down is about 1 mile north of Stratford, in Greater London. We send applicators to Holloway Down for facade joints. Our Greater London coverage takes in 764 places, large and small. Our London page has more on work in that area (6 miles or so).

We cover the E11, E15 and E7 postcode districts for facade joints. If your site is on Eve Road, Cary Road and Lynn Road or close by, send details and we will quote for facade joints. If your building is just outside Holloway Down, we cover East Village (1 mile south-west), Temple Mills (1 mile west), Maryland (1 mile south), Stratford (1 mile south) and Leyton (1 mile north-west). Nearby towns on our patch include London (6 miles south-west), City of Westminster (7 miles west), Marylebone (7 miles west), Kensington (10 miles south-west), St Pancras (6 miles west) and Shoreditch (4 miles south-west).

What’s near Holloway Down

In Holloway Down, that means premises near West Ham Park, Stratford Circus and Buxton School and the streets around them. The closest station to Holloway Down is Maryland station, about 0.6 miles south of the centre. Nearby you’ll also find Tower of London (4.7 miles south-west) and Queen Mary's Hospital for the East End (0.9 miles south). The countryside around Holloway Down includes Tower Hill and Old Ford Island.

Map of Holloway Down © OpenStreetMap contributors

Aftercare for building managers

After handover, a little attention goes a long way:

  • Combine resealing with other works that need access
  • Check the asbestos register before old mastic is disturbed
  • Keep sills, gutters and drainage paths clear
  • Record the product and colour used on each elevation

Following storms, look inside for damp or staining near frames. An early report typically means a small reseal rather than a bigger repair.

Coordinate facade sealing with other external works. One set-up for several trades saves money.

Work for main contractors and building owners

As a CHAS accredited contractor and Constructionline member, we make supplier vetting simple. Our insurance certificate can be sent along with the quote.

Planned maintenance programmes are welcome: resealing failed joints building by building, on a schedule that suits your budget. Sites in Holloway Down can sit alongside others in a wider programme.

Accreditations

Trusted. Accredited. Insured.