Greater London · England
Fire Rated Sealant in Smithfield
Fire rated sealant for Smithfield and the surrounding area: careful preparation, the right product and tidy work. Call for a quick quote.
- Gaps where walls meet ceilings or slabs
- Cracked or shrunken fire-rated sealant
- Unsealed gaps around fire door frames
What affects the cost of fire rated sealant
The quote reflects the job in front of us. We take into account:
- The amount of work
- Whether the work is at height
- Mould in or behind the old joints
- How much old sealant there is and how hard it is to remove
Homes and businesses are quoted the same way: the amount of work, the access and the products needed. Ask us for a quote and we’ll go through it with you.
What we need to know
To make quoting easier, please include:
- Where the job is, and your postcode
- Photos by email, if that is easy
- What’s wrong with the joints now
- How we’d reach the joints
Asking for a quote is easy: let us know the job and the location. Photos by email help us understand the job, and we will take it from there.
Fire rated sealant in Smithfield, done properly
Later work by other trades often breaks through fire stopping, especially in flats, HMOs, offices and schools. A new cable run or a replaced pipe can leave an open hole behind. Those are the gaps we close, using a tested fire-rated product. We work on pipe & cable gaps, flats & HMOs and door frames, and common reasons people get in touch are sealant items on a fire risk assessment action list and seals cut through by electricians, plumbers or data installers.
Across London, offices, shops, hotels, student halls and blocks of flats all need sealant work from time to time, from washroom silicone to fire-rated sealant around pipes and cables passing through walls. Out-of-hours working can be arranged where a building in Smithfield can’t close.
Our work is backed for twelve months.
- Where
- Smithfield (EC1V, EC1P, EC1R)
- Wider area
- Greater London
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
How the job changes by surface
Masonry and concrete
Core-drilled and broken-out holes in concrete are often irregular. We measure the gap at its widest point to make sure it suits the product.
Door frames
A door can only do its job if the gap behind its frame is sealed too. We seal that gap with a fire-rated sealant suited to the frame and wall.
The process
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 how much there is to do. In Smithfield, flats, stairs and shared entrances are part of the routine. Mention any building rules, key holders or managing agents when you book.
- We plan the order of work and access, floor by floor or flat by flat.
- Old, damaged or unsuitable sealant is removed.
- Gaps are cleaned of dust and loose material.
- We apply and tool the sealant to the product’s tested detail.
- We record what was done and flag anything that needs a different system.
Preparing for the visit
- Let us know about parking restrictions
- Clear the area around the work
- Tell us about access, such as stairs, a lift or high-level joints
Getting a quote
For a quote, phone 0345 464 0079 or drop us an email with the location and a short description of the problem. We will send you a clear quote before any work starts.
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Places near Smithfield
What else we do in Smithfield
Why act early in Smithfield
An open gap in a fire-resisting wall is a route for smoke and fire. A proper seal lets the wall do its job again, and the work involved is often modest. Converted houses in London often have a bathroom above someone else’s living room, and a slow leak from a failed seal can end up in the flat below. Putting it right early is much less trouble.
What it costs depends on the amount of work, how much old material has to come out and access to the work. You’ll have a clear quote before any work starts.
Why choose Mr Mastic in Smithfield
- Quality sealants from Arbo and Everbuild
- More than 20 years in sealant work
- Experience in homes, commercial sites and hotels
- Rated 4.9 stars on Google
Fire rated sealant in Smithfield: local notes
Smithfield has hotels and guest accommodation in and around it. For hotels, a room-by-room programme keeps most rooms in use while the work goes on. Many London buildings have tight access and loading restrictions, so out-of-hours working can be arranged where needed.
If you look after a church, hall or community building such as St Bartholomew-the-Less, service openings in its walls need the right fire-rated sealant, as in any building. As a London address, Smithfield can be tricky for parking: let us know about parking bays, permits or a driveway. For landlords with property near Farringdon station, new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant.
Smithfield is about 1 mile north of London, in Greater London. From the centre of Smithfield to the outskirts, we cover fire rated sealant for every kind of property, from flats and houses to offices and hotels. Across Greater London, we cover 764 places, Smithfield among them.
Work in EC1V, EC1P and EC1R is quoted and booked the same way as anywhere else. Streets in the area include Oat Lane, Shoe Lane and Long Lane, all of which we cover. Main roads around Smithfield include the A1 and A4. If you are just outside Smithfield, we cover Farringdon (1 mile north), Blackfriars (1 mile south), Holborn (1 mile west), Temple Bar (1 mile south-west) and Clerkenwell (1 mile north). Further out, we also cover 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 Smithfield
Typical jobs here are in homes near London Nautical School, Barts Health Archives and St Alban's Church of England Primary School, among other places. Nearby too are St Mary-at-Hill (1 mile south-east), Oriole pub (within half a mile south-west) and Postman's Park (under half a mile south-east). There’s a railway station in Smithfield itself: Farringdon station. Well-known places in the area include Montfichet's Tower (within half a mile south) and Postal Museum (under half a mile south-east). Not far away are Ludgate Hill and St. James's Park Lake.
Smithfield: your questions answered
Do you take on hotel work around Smithfield?
Yes, we work for hotels as well as homes and businesses. Rooms can be done a few at a time, so the building stays open.
Do you work for landlords with property near Farringdon station?
Yes. We work for letting agents and landlords as well as householders, and several properties can go on one quote. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Will we have a record of what was sealed?
Yes. Locations and products are written up when we finish. Tell us if your assessor needs it in a particular format.
How much does fire rated sealant cost in Smithfield?
We don’t publish prices, because the cost depends on the job: its size, the old material, access and the product needed. You’ll get a clear quote before any work starts.
Are you fully insured?
Yes. We are fully insured for every job we do.
Does someone need to be in?
For indoor joints, yes, someone needs to let us in. After that, you can carry on with your day.
What information do you need?
Only a few details: where it is, what you’ve noticed and how we reach it. After that, simply call 0345 464 0079 or email us.
Will there be a smell?
Sometimes, a little. Any smell clears as the sealant cures.
Should I try it myself first?
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
What sealant work cannot fix
Before booking, it’s worth knowing the limits:
- Issuing a fire rating or certificate for a building
- Openings too large for sealant, which need batts, boards or another system
- Construction that does not provide fire resistance on its own
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we will tell you honestly before you book.
What we seal
- Service penetrations
- Plasterboard & masonry
- Door frames
- Pipe & cable gaps
- Flats & HMOs
- Linear gaps
Landlord and commercial work in Smithfield
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
We also work for property managers and facilities teams. We can quote a run of properties together, and we are fully insured for the work.