Fire-rated sealing and fire stopping in Farringdon, Greater London
Sealant work in Farringdon for main contractors, managing agents and facilities managers: fire-rated and intumescent sealing of service penetrations and linear gaps, quoted at a fixed price.
- Expanding foam used as fire stopping
- Fire-stopping items raised at inspection or handover
- Unsealed penetrations discovered above suspended ceilings
Fire stopping for businesses in Farringdon
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Common problems we fix in Farringdon
Openings in fire-resisting walls typically appear when services are added or changed. New cabling, rerouted pipework or a data route drilled through a riser leaves an opening that nobody returns to. Over a few years of fit-outs, a wall can collect a lot of these.
Site and facilities staff are often the first to spot these:
- Seals that don’t match their tested detail
- Fire sealant pulled out of the opening
- Unsealed joints where partitions meet the slab
- Seals disturbed by maintenance and left open
For a unit at a site such as Grand Vitesse Industrial Estate, which lies south of Farringdon, new power or data runs between office and warehouse can breach a compartment wall.
Comparing quotes
- The named product and why it was chosen
- Can the work be phased to keep areas open?
- Will RAMS and insurance details be available?
- Whether old or failed sealant will be cut out, not overlaid
Fire stopping in Farringdon
Facilities managers in Farringdon often find open service penetrations when ceilings come down for other work. Where the walls and floors already have a fire-stopping specification, we can work to it using the product and detail it sets out. Where there isn’t one, the designer or fire engineer needs to set one first. If you have fire stopping installed outside its tested range and unsealed openings around new pipes and cables, we can help, whatever the surface. Whether you call it commercial sealant work, mastic application or joint sealing, in Farringdon it comes down to the same thing: failed joints cut out, faces prepared and the right sealant laid to the right depth.
After a fit-out or new cabling in a London building, risers and ceiling voids are where open service gaps tend to be found. Fire-rated sealant goes in where it’s the specified item; where a collar, wrap or batt is called for instead, we flag it.
We stand behind the joints we seal: 12 months, guaranteed. That covers our preparation and application, and if something we did falls short, we return to it.
- Location
- Farringdon (EC1V, EC1R, EC1P)
- Region
- Greater London
- Cover
- 12 months on our workmanship
- Quote
- A fixed quote before we start
- Call
- 01277 525 020
- Page updated
- 3 November 2026
Fire stopping in Farringdon: the local picture
The 2 miles around Farringdon include two care or nursing homes. Care settings depend on compartmentation, so service penetrations made during maintenance or refurbishment need sealing with the specified product. Approved Document B is the English guidance that covers fire stopping around openings and penetrations. Its BS 476 references are being withdrawn from 2 September 2029, with BS EN 13501-2 classification taking over, subject to transitional arrangements. What we install is set by the specification, and it goes in to the tested detail.
At a university such as Queen Mary's University West Smithfield Campus, less than half a mile south-east of Farringdon, labs, lecture blocks and residences are re-serviced often, so penetration seals are best checked after M&E work. At a college such as City and Islington College (0.7 miles north of Farringdon), checking penetration seals after summer M&E works is good practice.
Farringdon is about 2 miles north of London, in Greater London. We cover commercial sites throughout Farringdon. Our Greater London coverage takes in 764 places, from busy centres to rural villages.
Commercial sites across EC1V, EC1R and EC1P are covered for service penetrations. We cover commercial and managed buildings on Oat Lane, Shoe Lane and Long Lane and the roads nearby. Access to Farringdon is via the A1 and A4 among other routes, so getting applicators and materials to site is simple. If your building is just outside Farringdon, we cover Smithfield (1 mile south), Clerkenwell (1 mile north), Holborn (1 mile west), Blackfriars (1 mile south) and Temple Bar (1 mile south-west). Bigger towns within reach include Kensington (4 miles west), Walthamstow (6 miles north-east), Hampstead (4 miles north-west), Ruislip (14 miles west), Brompton (3 miles south-west) and Stockwell (4 miles south).
Around Farringdon
Locally, jobs take us to sites close to The Castle Public House, St Mary-at-Hill and Barts Health Archives, among other places. Also close by are St Peter and St Paul RC Primary School (less than half a mile north), Barbican Conservatory (under half a mile east) and Central Foundation Boys' School (0.8 miles east). Farringdon has its own railway station: Farringdon station. Other landmarks nearby include Museum of the Order of St John (less than half a mile north-east) and Gabriel's Wharf (0.9 miles south). The countryside around Farringdon includes Ludgate Hill and Barnsbury Wood.
Cost factors for service penetrations
Before we quote, we look at:
- Which sealant the job calls for
- Joint width, depth and condition
- Travel to remote or island sites
- Whether the work must be split into stages
No two sites price the same: the joint sizes, the specified product, access and working hours each have a bearing. Send the details and a fixed figure follows.
Before you send an enquiry
The more we know, the firmer the quote. Helpful details to send:
- Any specification or named product
- Any dates the work must fit around
- The type of building and who uses it
- How the joints are reached, and at what height
Quotes are fixed against the scope you send, so you know the figure before anyone is on site. To start the process, call the office on 01277 525 020 or use the quote form.
Different surfaces, different methods
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.
Plastic pipes
In a fire, plastic pipework melts away and leaves an opening. Some intumescent sealants are tested on smaller plastic pipes. We confirm material and size first and tell you if sealant isn’t the right product.
Also near Farringdon
Other services in Farringdon
Honest limits
Part of a good diagnosis is knowing where sealant stops. You’ll hear from us if the cause turns out to be any of the following:
- Gaps in walls that were never built as compartment walls
- Openings that need collars, wraps, batts or boards rather than sealant
- Fire risk assessments, a job for a competent assessor
If in doubt, phone 01277 525 020 or use the quote form and we’ll say what we think.
What we seal
- Pipe penetrations
- Joints between fire-resisting walls and floors
- Service gaps in risers
- Cable penetrations
- Linear gaps at wall heads
- Small duct penetrations where the tested detail allows
FAQs: Farringdon
Would you work within a site like St Bartholomew's Hospital?
Yes, provided the work is planned with the site’s estates team. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.
Can you cope with the access rules in a London building?
Yes. Inductions, permits and timed loading are routine for us in London. The building manager’s rules go straight into our method. All of Greater London is inside the ULEZ, and our planning allows for it
Is sealant suitable for all service openings?
No. A sealant’s evidence covers set services, gaps and wall or floor types. Outside that, a different product is needed, specified by your designer.
Can weather delay the job?
For external joints, yes. The joint has to be dry and within the product’s temperature range, so damp, frosty or very cold days can stop external work. Inside work is seldom held up.
Can you quote from photos?
That depends on the size and complexity of the job. Straightforward work can often be priced from photos and measurements, while larger or less clear jobs get a site visit first.
Is it fine to apply new sealant on top of old?
No, never. Overlaying old sealant is a frequent cause of early failure, so everything comes out first.
Do you work to architects’ specifications?
Yes. We follow the specification, along with the manufacturer’s installation guidance, and any queries are raised before we start.
Maintenance after handover
For the best life from the joints:
- Settle who seals which penetrations at the start of a project
- Check risers and ceiling voids after each round of works
- Put resealing into every M&E and fit-out package
- Keep product data and details in the fire safety file
During planned inspections, look at seals in risers, cupboards and voids. Watch for cracked sealant, new services with no seal and openings that have grown and get them dealt with.
The simplest way to keep compartment walls intact is to plan fire stopping into every job that crosses them. That way the opening is sealed while the trade and access are still there, not months later.
Diagnose, treat, sign off
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. 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.
- We start with your penetration schedule, drawings or specification.
- Access, permits and the order of areas are agreed with the site team.
- We compare every service penetration with its tested detail before sealing.
- Unsuitable material is removed and the opening cleaned.
- Backing and fire-rated sealant are installed to the detail and tooled.
- We tell you about openings that need a different product.
What we need from you
- Send any specification or drawings in advance
- Make sure the joints can be reached
- Let building users know which areas are affected
Get a fixed quote
Send details, get a quote, we seal, guaranteed: that’s how every job runs. To take the first step, speak to us on 01277 525 020 or email the details over.