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

Canary Wharf fire stopping

Fire-rated and intumescent sealing of service penetrations and linear gaps across Canary Wharf, by CSCS-carded applicators. CHAS accredited and fully insured.

  • Seals disturbed by maintenance and left open
  • Unsealed penetrations discovered above suspended ceilings
  • Fire sealant pulled out of the opening
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Fire stopping across Canary Wharf

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

How a job runs

Site rules come first: signing in, inductions and any permit to work. With the paperwork done, the joints are worked through in the order agreed with your site contact, and each area is checked before we leave it. Planning a London job such as one in Canary Wharf starts with access. Give us the hours we can be on site and we’ll schedule to suit.

  1. First we go through the drawings, schedule or specification for the seals and raise any questions before we price.
  2. On site, each opening is checked against the tested detail it is meant to follow.
  3. Anything that doesn’t belong in the opening, such as expanding foam or general-purpose filler, is removed.
  4. Mineral wool or other backing goes in wherever the detail asks.
  5. We apply the specified sealant to the depth and around the services as the detail shows.
  6. If an opening needs something other than sealant, we tell you instead of improvising.

Before we start on site

  • Point out any areas we must not close
  • Share your working hours and any access restrictions
  • Arrange parking or a loading space

Request a quote

A good quote starts with a clear picture: the joints involved, quantities, access and the product called for. Share whatever details you have and we will fill any gaps with a visit.

Get a quick quote

Read more

Fire stopping for commercial buildings in Canary Wharf

The test standards are BS EN 1366-3 for penetration seals and BS EN 1366-4 for linear joints. That classification, such as EI 60 or EI 120, belongs to the product in its tested arrangement. Reproducing the tested arrangement on site is the part we take care of. The enquiries we see most involve service penetrations left open after M&E works and fire seals cut back for extra cables and never reinstated, across linear gaps at wall heads, service gaps in risers and pipe penetrations. Looking for mastic applicators who cover Canary Wharf? We’ve been sealing commercial buildings since 2005, CHAS accredited and a Constructionline member.

Taller residential buildings in London may fall under the Building Safety Act’s higher-risk regime, where fire-stopping records get close attention. We install what the designer or fire engineer has specified, and if you need records of the work, tell us and we’ll confirm with the quote.

We stand by our work with a 12-month guarantee. That covers our preparation and application.

The Mastic Doctor team beside their liveried vans in front of an office building
Place
Canary Wharf (E14, SE16, E22)
Region
Greater London
Guarantee
A 12-month guarantee
Quote
Fixed quote, scope in writing
Call
01277 525 020
Last updated
3 November 2026

Common questions from Canary Wharf clients

Can work at a site such as University of Sunderland in London fit around teaching?

Yes. Education sites normally want the work in vacations or in phases during term, and we plan to suit. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.

Do you work on fire-rated sealing in hotels in Canary Wharf?

Yes, where the specification calls for fire-rated sealant. It goes in to the manufacturer’s tested detail for the wall or floor and the services passing through, and we will tell you if the detail calls for a collar, wrap or batt instead.

Do you work to architects’ specifications?

Yes. Include it with the drawings when you ask for a quote, and the quote will be based on it.

Can staff carry on working while you’re here?

Yes, as long as we plan it. We agree a sequence with your contact so just one area at a time is disrupted.

Is it fine to apply new sealant on top of old?

No. Sealing over old material is one of the classic causes of early joint failure, so it all comes out first.

When can the area be used after sealing?

We will confirm how long the chosen product needs to cure, and sign any area that should be left alone.

How do you deal with asbestos in old sealant?

Managing asbestos is the dutyholder’s responsibility, so we’ll ask for the register before work on an older building. If anything suspect turns up, we stop until it’s tested.

Different surfaces, different methods

Linear joints

Joints at the top of partitions may need to move as the slab above deflects. The specified product and backing for that movement are what goes in, with no gaps along the run.

Drylining partitions

Plasterboard partitions are tested as a specific construction. We check that the product’s detail covers that partition type and board thickness before sealing.

When it isn’t the sealant

Not every problem is a sealant problem, and we’d rather tell you before you spend money. It won’t fix:

  • Fire doors, dampers or other fire safety equipment
  • Walls or floors that aren’t fire-resisting to begin with
  • Large openings beyond what any sealant detail covers

Not sure which it is? You can call the office on 01277 525 020 or email us and we will tell you honestly.

Surfaces we seal

  • Pipe penetrations
  • Service gaps in risers
  • Joints between fire-resisting walls and floors
  • Small duct penetrations where the tested detail allows
  • Linear gaps at wall heads
  • Cable penetrations

Aftercare for building managers

Cleaning and maintenance staff play a part too. Pass these on to them:

  • Agree the fire-stopping specification before services go in
  • Brief every trade that openings they make must be sealed
  • Arrange inspection before areas are covered up
  • Flag new cables with no seal around them

Add risers, plant rooms and ceiling voids to routine fire-stopping checks. Look for cracks, unsealed new cables and gaps that have been enlarged, and report them promptly.

Keep a register of where seals are and what they are made of. When a new service goes through, everyone knows which product and detail to match.

Fire stopping around Canary Wharf: how the place shapes the job

The 2 miles around Canary Wharf include four care or nursing homes. Care settings depend on compartmentation, so service penetrations made during maintenance or refurbishment need sealing with the specified product. There are a good number of hotels within about 2 miles of Canary Wharf. A hotel refit often runs new services through compartment walls between bedrooms and corridors, and each opening needs the specified seal.

On a site such as Poplar Business Park (0.5 miles north-east of Canary Wharf), every fit-out that runs new services through a compartment wall leaves penetrations to seal with the specified product. Residences at universities like University of Sunderland in London (to the south-east of Canary Wharf) have compartment walls that must be resealed whenever services change. Theatres, wards and plant rooms at sites like The London Independent Hospital, 1.6 miles north-west of Canary Wharf, all have compartment walls crossed by services.

Canary Wharf is about 2 miles north-west of Greenwich, in Greater London. Any commercial site in Canary Wharf is covered. Canary Wharf is one of 764 places in Greater London on our list for service penetrations.

Work on service penetrations is covered throughout E14, SE16 and E22. Streets here include Castor Lane, Cassilis Road and Dockyard Lane. Access to Canary Wharf is via the A1261 among other routes, so getting applicators and materials to site is simple. Nearby places we also cover include London Docklands (1 mile east), Poplar (1 mile north-east), Heron Quays (1 mile south-west), Coldharbour (1 mile east) and Blackwall (1 mile east). Further afield, our area takes in London (3 miles west), City of Westminster (6 miles west), Marylebone (6 miles west), Kensington (8 miles west), St Pancras (4 miles west) and Shoreditch (3 miles north-west).

Local landmarks in Canary Wharf

Locally, jobs take us to sites close to Tower Hamlets College, Sir John McDougall Gardens and The Ledger Building pub, among other places. Canary Wharf has its own railway station: Canary Wharf station. Nearby you’ll also find The Pumphouse Educational Museum (0.8 miles west) and Surrey Quays Shopping Centre (1.4 miles south-west). The countryside around Canary Wharf includes St. James's Park Lake and Tower Hill.

Map of Canary Wharf © OpenStreetMap contributors

What affects the price in Canary Wharf

These are the things that shape the price:

  • Whether the work must be split into stages
  • Quantities, in metres or numbers
  • Induction, permit and paperwork requirements
  • Specialist products, such as fire-rated or hygienic sealants

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

Before you send an enquiry

Good information means a firmer quote. Helpful details to send:

  • Approximate linear metres or a joint schedule
  • How the joints are reached, and at what height
  • Specification clauses that apply
  • The asbestos register, for older buildings

To get a fixed quote, phone 01277 525 020 or send details through our quote form. You can also send details through our quote form.

Commercial clients in Canary Wharf

Main contractors use us as their sealant subcontractor, on new build and refurbishment alike. We work to your programme, your specification and your site rules, with CSCS-carded applicators on site.

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. We can agree access arrangements and keyholder contacts beforehand.

Accreditations

Trusted. Accredited. Insured.