Greater London · England
Fire-rated sealant in Pentonville, Greater London
Fire rated sealant across Pentonville and nearby, with every bit of old sealant taken out first.
- Gaps left after a refit or conversion
- Open gaps behind door architraves
- Sealant items on a fire risk assessment action list
Can I do it myself?
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
About our fire rated sealant in Pentonville
We can work through a building room by room or floor by floor, with each location and product recorded. That record is useful for your files and for whoever looks at the building next. We are often asked to deal with fire stopping disturbed by later work and holes left by a change of layout, on service penetrations, plasterboard & masonry and pipe & cable gaps.
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. Where a building in Pentonville needs to stay open, work can be planned outside normal hours.
We stand behind the work with a one-year guarantee.
- Where
- Pentonville (N1, N1P, EC1V)
- Region
- Greater London
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Pentonville: your questions answered
Is parking an issue for fire rated sealant in Pentonville?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot, so mention what’s available when you book.
I let a flat near Essex Road station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. Just ring 0345 464 0079 or email us with the address and what needs doing, and we will send you a clear quote.
What do you put in the joint?
Products from Arbo and Everbuild, among others, picked for each joint. We explain the product when we quote.
Where do you work from?
We’re based in Crawley, and we cover South East England, London and all of Scotland.
Is the work guaranteed?
Yes. All our work carries our one-year guarantee.
Will it make a mess?
No. We work neatly, protect the area around the joints and tidy up afterwards.
Are you insured?
Yes. Mr Mastic is fully insured.
Do I have to be there?
We need access to the joints, so we will agree that with you when we book. For inside work, that normally means someone being in.
Fire rated sealant around Pentonville
There are hotels and other places to stay in and around Pentonville. Hotel work can be planned room by room, with out-of-hours working where needed. 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, and gaps around services are often picked up there. We apply fire-rated sealant to the assessor’s or designer’s specification and the product’s tested details.
Letting a property close to Essex Road station? Then new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant. For buildings such as Church of Saint Peter, gaps around pipes and cables are worth checking after any building work there.
Pentonville is about 1 mile north-east of St Pancras, in Greater London. For fire rated sealant in and around Pentonville, it’s easy to get a quote: please phone 0345 464 0079 or email us. We are based in Crawley and cover Greater London. Our area takes in 764 places across Greater London, from the larger towns to small villages.
We cover every part of N1, N1P and EC1V for fire rated sealant. That includes homes and businesses on City Road, Noel Road and Dewey Road. Being close to the A1200, Pentonville is easy for our applicators to reach for fire rated sealant. We also cover Angel (1 mile south-west), Islington (1 mile north), Clerkenwell (1 mile south), Barnsbury (1 mile north-west) and St Pancras (1 mile south-west). We also work in nearby towns such as City of Westminster (3 miles south-west), Kensington (5 miles south-west), Walthamstow (5 miles north-east), Hampstead (4 miles west), Ruislip (13 miles west) and Brompton (4 miles south-west).
Local landmarks in Pentonville
Around Pentonville, our work takes us to homes and buildings near Islington Green School, The Camden Head Public House and Pilsudski Institute of London and the streets around them. You will also find City of London Academy Islington (under half a mile east) and Barnard Park (under half a mile west). For rail, the closest station is Essex Road station, roughly 0.5 miles north-east. Nearby you’ll also find Museum of Funeral History (0.7 miles south-west) and Brunswick Centre (1.2 miles south-west). Green spaces nearby include Ludgate Hill and St. James's Park Lake.
Signs you need fire rated sealant in Pentonville
If the sealant is too shallow, has the wrong backing or sits on a dusty surface, it isn’t installed as tested. We see plenty of fire stopping that was hurried particularly when it was the last job before handover.
The problems people generally mention when they call are:
- Gaps filled with a product that isn’t fire-rated
- Damaged fire sealant left by other trades
- Open holes round services passing through fire walls
- Old fire sealant that has split or come away
If you look after a building such as St John Evangelist RC Primary School, service openings in fire-resisting walls need checking after any refurbishment.
What to look for in a quote
- What insurance they hold
- Whether all the old sealant comes out first
- How the surfaces are prepared before sealing
- How long to leave it before use
What we do, step by step
On the day, there’s very little for you to do. Point us to the joints and we’ll get on with it. The job generally takes a few hours for a handful of gaps, and longer for a whole building, including the tidy-up. In Pentonville, as in most of London, parking needs a little planning. It helps if you can point us to a visitor permit or a bay close to the door.
- Before starting, we go through the specification or action list with you.
- We measure every gap and note what it’s in and what passes through.
- Any non-fire-rated filler is removed and the faces cleaned.
- The specified fire-rated sealant goes in over any backing its detail requires.
- We hand over a list of locations and products for your records.
How to prepare
- Keep pets and children clear of the area while we work
- Tell us if parking is tricky
- Move anything stored near the joints
How to get a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add pictures by email if you can.
Read more
What happens if it’s left?
Leaving a gap until a refurbishment comes round can mean years with it open. On its own, sealing it now is a small job. In a flat in Pentonville, failed sealant seldom stays inside your own four walls: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we will go through it with you.
Why choose Mr Mastic in Pentonville
- We’re fully insured
- Tidy, careful work
- A 12-month guarantee on all work
- 180+ five-star Google reviews
See our cost guide or what customers say.
Places near Pentonville
What else we do in Pentonville
How we quote for fire rated sealant
Some jobs are bigger than they look, and some smaller. What affects the quote:
- The amount of work
- Whether the work is at height
- Whether there’s mould to deal with
- Any working-time requirements on site
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all make a difference, and we will explain the quote if you ask.
Asking for a quote
When you contact us, these details help:
- A few pictures by email, if you can
- The type of property
- What the problem is, such as mould, gaps, leaks or cracking
- How many joints, rooms or windows are involved
We quote each job on its own, so the first step is telling us about yours. Just phone 0345 464 0079 or email us with the details.
Aftercare tips
After the cure time, these simple habits help:
- Get damaged fire seals looked at promptly
- Keep the record of products and locations with your fire safety documents
- Look in service cupboards and ceiling voids from time to time
- Photograph sealed gaps before they’re covered up
Do not add foam, filler or ordinary sealant over a fire seal. Repairs should use a matching fire-rated product. We can tell you which product we used.
Open gaps don’t only matter in a fire: noise, draughts and even pests can come through too. Dealing with them early helps with all of these.
Landlords, agents and businesses in Pentonville
If you manage several properties in or around Pentonville, jobs at different addresses can be quoted together. Send us the addresses and the work at each, and pictures by email help.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.