Greater London · England
Fire-rated sealant in Barbican Estate, Greater London
Fire rated sealant in Barbican Estate from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Unsealed gaps where pipes and cables go through a wall
- Damaged fire sealant left by other trades
- New service routes left unsealed after building work
How we handle fire rated sealant in Barbican Estate
Landlords, managing agents and facilities teams use us for the sealant items on a fire risk assessment. If you share the list, we can quote for the gaps that need fire-rated sealant. If you are dealing with gaps left after a refit or conversion and seals cut through by electricians, plumbers or data installers, we can put it right, whatever the surface.
Commercial work in London comes with its own logistics: loading restrictions, building rules and tight access. For a building in Barbican Estate, we agree timings and access before anything starts.
You get a one-year guarantee, the same in Barbican Estate as everywhere else we work.
- Location
- Barbican Estate (EC1V, EC2A, EC1Y)
- Region
- Greater London
- Cover
- 12 months on all our work
- Price
- A clear price before work begins
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Landlords, agents and businesses in Barbican Estate
For anyone letting property in or around Barbican Estate, several properties can be quoted together. Send us the addresses and the work at each.
Letting agents and landlords in Barbican Estate can book us as well as homeowners. Sealant work between tenants keeps a property looking cared for.
Also near Barbican Estate
Also in Barbican Estate
Commercial buildings in Barbican Estate
Many London buildings have tight access and loading restrictions, and out-of-hours working is possible to arrange. Barbican Estate 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.
For site and facilities teams at buildings such as Prior Weston Primary School and Children's Centre, fire-stopping around service openings should be restored whenever new services go in. For buildings such as St Giles-without-Cripplegate, service openings in its walls need the right fire-rated sealant, as in any building. As a London address, Barbican Estate can be tricky for parking: let us know about parking bays, permits or a driveway.
Barbican Estate is about 1 mile north of London, in Greater London. Jobs in Barbican Estate get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Barbican Estate is one of 764 places in Greater London where we work for fire rated sealant.
Every address in EC1V, EC2A and EC1Y is within our area for fire rated sealant, from the main roads to the quietest streets. Fire rated sealant is available to properties on Oat Lane, Shoe Lane and Long Lane and the roads around them. Being close to the A1 and A40, Barbican Estate is simple for us to get to. Close by, we work in Finsbury (1 mile north), City of London (1 mile south), St Luke's (1 mile north), Bishopsgate (1 mile east) and Aldgate (1 mile south-east). We also work in nearby towns such as City of Westminster (3 miles west), Kensington (5 miles west), Walthamstow (6 miles north-east), Hampstead (4 miles north-west), Ruislip (14 miles west) and Brompton (3 miles south-west).
Local landmarks in Barbican Estate
Typical jobs here are in homes near Barbican Conservatory, Central Foundation Boys' School and Barts Health Archives, among other places. Also close by are Charterhouse Square School (within half a mile north-west), St Mary-at-Hill (0.8 miles south-east) and The Jugged Hare pub (within half a mile north-east). There’s a railway station in Barbican Estate itself: Moorgate station. A little further out are St Luke's Hospital for Lunatics (0.5 miles north-east) and Gabriel's Wharf (1 mile south-west). Not far away are Barnsbury Wood and St. James's Park Lake.
How we quote for fire rated sealant
Every job gets its own quote. This is what makes a difference:
- Mould in or behind the old joints
- How many areas need sealing
- The amount of work
- Any working-time requirements on site
We do not show prices on the website, because each job is priced on what it involves. Call for a quick quote.
What we need to know
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Any previous sealing or DIY work
- Photos by email, if that is easy
- The address or postcode of the job
- What’s wrong with the joints now
To get a quote, ring 0345 464 0079 or send us an email with the location and a short description of the problem. We will give you a clear quote before any work starts.
Honest limits
Some problems need a builder, plumber or other trade rather than us:
- Walls or floors that weren’t built to resist fire
- Fire doors that need new seals, closers or hardware
- Sign-off of the building, which sits with building control or your assessor
If you are not sure, just phone 0345 464 0079 or email us and we will give you a straight answer.
What we seal
- Pipe & cable gaps
- Door frames
- Linear gaps
- Plasterboard & masonry
- Service penetrations
- Flats & HMOs
Your questions about fire rated sealant in Barbican Estate
Do you take on hotel work around Barbican Estate?
Yes, hotels and guest houses are among the places we work. A room-by-room programme keeps most rooms in use while the work goes on.
I let a flat near Moorgate station. Can you help?
Yes. We work for landlords and agents as well as householders. Just call 0345 464 0079 or email us with the address and what needs doing, and we will send you a clear quote.
What’s the difference between intumescent and fire-rated sealant?
Fire-rated sealant covers any sealant tested for use in fire stopping. Intumescent types expand when heated, and they’re one option among several. The specification and the tested detail decide which is used.
Can I do it myself?
Some simple jobs can be done by a careful DIYer. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Will you assess my building’s fire safety?
No. That is for a fire risk assessor, designer or building control. We apply fire-rated sealant to the requirements they set.
What fire rating will the seal have?
Ratings and certificates are not something we issue. What’s required is set by your assessor or designer, and the product’s tested details show what it achieves.
Can you give us a record of the work?
Yes. Locations and products are written up when we finish. If you need pictures or a set layout, ask when you get a quote.
Where do you work from?
Mr Mastic is based in Crawley. We cover Barbican Estate and the rest of Greater London.
What we do, step by step
Most of a good job is in the preparation, so that’s where we spend the time. Joints are cleaned back and dried before anything new goes in. In total, it generally takes a few hours for a handful of gaps, and longer for a whole building. For a job in Barbican Estate, parking and access are the things to plan: tell us about permits, visitor bays or off-street space, which floor we are working on and whether there’s a lift.
- We start with the survey or action list, checking the size and surfaces of every gap.
- We remove any old or unsuitable filler and clean the gap.
- Backing or fill is fitted where the product’s tested detail calls for it.
- We apply the fire-rated or intumescent sealant to the specified depth and tool it.
- We record the locations and products used for your records.
Getting ready for the visit
- Mention any sign-in or site rules at work premises
- Tell us about access, such as stairs, a lift or high-level joints
- Tell us about any water getting in
Getting a quote
Call for a quick quote, or email us if that’s easier. Describe what needs sealing and we will explain what’s involved before giving you a price.
Advice
Leave it or put it right?
An unsealed gap lets smoke and fire get round a wall that was built to hold them back. A proper seal lets the wall do its job again, and the work involved is often modest. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and by the time it shows on a wall or ceiling in Barbican Estate, the repair is bigger than the sealant job would have been.
What it costs depends on the size of the job, how much old material has to come out and access to the work. You’ll have a clear quote before any work starts, so you know where you stand.
Why book with us
- A 12-month guarantee on all work
- Experience in homes, commercial sites and hotels
- Old sealant always removed completely
- Anti-fungal silicone where joints get wet
Take a look at what affects the cost and our reviews.
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Ask every contractor to reseal any fire stopping they disturb
- Take photos of fire stopping before ceilings or boxing go back
- Include hidden areas like risers in routine checks
- Ask which product was used before you paint
Avoid covering a sealed gap with anything that is not part of the tested detail. If it needs repair, use the same type of product. We can tell you which product we used.
Any job that breaks through a wall or ceiling should include resealing. Doing it at the time avoids leaving gaps behind.
What the job involves on each surface
Service penetrations
New gaps tend to show up where services have been added. Old or unsuitable filler comes out before the right sealant goes in over any backing the detail calls for.
Flats and HMOs
In flats and HMOs, the walls and floors between homes and common areas need sealing where services pass through. We seal the gaps your assessor has identified, flat by flat if needed.