Greater London · England

Fire-rated sealant in Farringdon, Greater London

Fire rated sealant across Farringdon and nearby, with old sealant always removed completely.

  • Cracked or shrunken fire-rated sealant
  • Gaps left after a refit or conversion
  • Gaps filled with a product that is not fire-rated

Fire rated sealant for Farringdon homes and businesses

Fire rated sealant for homes and businesses in Farringdon

We don’t assess buildings or decide what fire stopping is needed; your assessor, designer or building control sets that out. Our part is applying the specified sealant carefully, to the right depth and with the right backing. Typical jobs include open gaps behind door architraves and open holes round services passing through fire walls, across linear gaps, flats & HMOs and service penetrations.

London’s offices, shops, hotels, student accommodation and blocks of flats all have joints to look after, whether that’s washroom resealing or fire-rated sealant around service openings. Where a building in Farringdon needs to stay open, work can be planned outside normal hours.

A one-year guarantee comes as standard, so you are not left on your own once the job is done.

Mr Mastic applicators lined up beside the company vans, one holding a sealant gun
Where
Farringdon (EC1V, EC1R, EC1P)
Region
Greater London
Guarantee
12 months on all our work
Quotes
Quoted before any work starts
Phone
0345 464 0079
Last updated
26 October 2026

DIY sealant or a professional job?

If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.

A DIY attempt does not rule out a professional job. We cut it out and start again.

When something else is needed

We’ll always be straight with you, so here’s what sealant can’t fix:

  • Sign-off of the building, which sits with building control or your assessor
  • Assessing a building’s fire safety
  • Large holes that need a different fire-stopping system

Not sure which it is? You can ring 0345 464 0079 or drop us an email and we’ll tell you honestly before booking.

What we seal

  • Linear gaps
  • Service penetrations
  • Door frames
  • Pipe & cable gaps
  • Flats & HMOs
  • Plasterboard & masonry

Common questions in Farringdon

Is parking an issue for fire rated sealant in Farringdon?

In much of London, parking needs planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.

I let a flat near Farringdon station. Can you help?

Yes, landlords and agents are among the people we work for. Just phone 0345 464 0079 or drop us an email with the address and what needs doing, and we’ll give you a clear quote.

Is it OK to seal over old sealant?

No. Fresh sealant doesn’t stick to old sealant, and anything trapped underneath, including mould and water, stays there. We remove it all first.

Can you quote for more than one area?

Of course. Combining jobs makes good use of the visit, so mention them when you ask for a quote.

Should I try DIY first?

For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.

Will it make a mess?

Very little: the area around the joints is protected first, and we tidy up before we go.

Can you fill the gap behind a fire door frame?

Yes, if the gap is within the product’s tested range. Our work is the gap around the frame.

Can I use normal mastic around a pipe through a fire wall?

No. It looks sealed but won’t perform as fire stopping. Use a product tested for that gap and service, or ask us to do it.

Leave it or put it right?

Doing it once, properly, beats doing it twice. If the details weren’t followed, the seal may need redoing when the building is next checked. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in Farringdon, the repair is bigger than a sealant job.

We don’t show prices on the website, because each job is priced on what it involves. For a quick quote, please phone 0345 464 0079 or send us an email and we’ll talk you through it.

Why book with us

  • Approved under the ARBOMaster scheme
  • 20+ years of sealant experience
  • Any old sealant cut out fully, not covered over
  • Sanitary silicone with an anti-fungal additive in wet areas

Read what affects the cost or our reviews.

What fire rated sealant looks like in Farringdon

Many London buildings have tight access and loading restrictions, and out-of-hours working is possible to arrange. In England, the Regulatory Reform (Fire Safety) Order 2005 requires a fire risk assessment for workplaces and for the common parts of blocks of flats, which is often where open fire-stopping gaps are first noticed. We work to the specification you’re given, installing the product to its tested details.

Letting a property close to Farringdon station? Then new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant. For site and facilities teams at buildings such as Charterhouse Square School, fire-stopping around service openings should be restored whenever new services go in.

Farringdon is about 2 miles north of London, in Greater London. If you need fire rated sealant in Farringdon, it’s easy to get a quote: please ring 0345 464 0079 or drop us an email. We are based in Crawley and cover Greater London. 764 places in Greater London are on our list, from the larger towns to small villages.

All of EC1V, EC1R and EC1P is covered for fire rated sealant, from the main roads to the quietest streets. Local streets include Oat Lane, Shoe Lane and Long Lane, and we cover them all. Farringdon is on the A1 and A4, so it’s easy for us to get to. We also cover Smithfield (1 mile south), Clerkenwell (1 mile north), Holborn (1 mile west), Blackfriars (1 mile south) and Temple Bar (1 mile south-west). Larger places 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).

Local landmarks in Farringdon

Around Farringdon, our work takes us to homes and buildings near The Castle Public House, St Mary-at-Hill and Barts Health Archives and the streets around them. Nearby too are St Peter and St Paul RC Primary School (less than half a mile north), Barbican Conservatory (less than half a mile east) and Central Foundation Boys' School (0.8 miles east). There’s a railway station in Farringdon itself: Farringdon station. Well-known places in the area 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.

Map of Farringdon © OpenStreetMap contributors

Different surfaces, different methods

Door frames

Behind most architraves is a gap between frame and wall. Where it’s open, we seal it to the product’s details for that gap size before the trim goes back.

Service penetrations

Pipes, cables and ducts passing through fire-resisting walls and floors each leave a gap. We seal it with a product tested for that service and gap size.

When to call us in Farringdon

A lot of fire stopping is out of sight: above ceilings, inside risers and behind panels. Because nobody sees it, gaps go unnoticed until an assessor or surveyor looks.

It’s worth asking for a quote if you see:

  • Open holes round services passing through fire walls
  • Door frames with gaps between frame and wall
  • Sealant items on a fire risk assessment action list
  • Old fire sealant that has split or come away

Community buildings like St John Clerkenwell are part of the picture too: service openings in its walls need the right fire-rated sealant, as in any building.

What your quote should include

  • What happens if the job turns out different
  • Whether they’re fully insured
  • Is the old sealant removed completely?
  • How long the guarantee is

Choosing a sealant specialist

What we do, step by step

At the end, we look at the finished work together and explain the cure time. The work normally takes a few hours for a handful of gaps, and longer for a whole building, depending on the size of the job. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. Mention any building rules, key holders or managing agents when you book.

  1. We go through the gaps on your list or survey and check each one’s size and substrate.
  2. Old or unsuitable sealant is cut out and the gap cleaned.
  3. Backing or fill is fitted where the product’s tested detail calls for it.
  4. We apply the fire-rated or intumescent sealant to the specified depth and tool it.
  5. Finally, we list where we worked and what we used, for your records.

Preparing for the visit

  • Mention any tricky access
  • Keep children and pets away from the work area
  • Tell us if parking is tricky

Ask for a quote

We do not publish a price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, call 0345 464 0079 or send us an email.

Ask for a quote

Advice

Landlord and commercial work in Farringdon

For anyone letting property in or around Farringdon, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs, and photos by email help.

From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job