Greater London · England
Fortis Green Fire Rated Sealant
Fire-stopping gaps in Fortis Green need attention? We cut out the old, prepare the joints and apply the right sealant.
- Linear gaps at the head of walls
- Gaps flagged on a fire risk assessment
- Fire stopping disturbed by later work
Do you need fire rated sealant in Fortis Green?
Sometimes the wrong product was used from the start: general-purpose foam, everyday silicone or caulk in a place that needed a tested fire seal. It looks sealed, but it is not fire-rated.
Signs it’s time to call us include:
- Joints picked up in a fire-stopping survey
- Open joints along the top of partitions
- Fire stopping disturbed by later work
- Gaps filled with a product that is not fire-rated
As a London address, Fortis Green can be tricky for parking: let us know about parking bays, permits or a driveway.
Comparing quotes
- Is VAT in the price?
- How long to leave it before use
- Which sealant they’ll use, and why
- How the surfaces are prepared before sealing
How we handle fire rated sealant in Fortis Green
Door frame gaps, linear joints and holes around services all have their own details. We check the size and the substrate before choosing the product, then the sealant goes in to the depth the product’s details set. Common call-outs are for unsealed gaps around fire door frames and seals cut through by electricians, plumbers or data installers, across door frames, linear gaps and plasterboard & masonry.
In London’s blocks of flats, service risers and common parts have pipes and cables passing through walls and floors. For managing agents and building owners in Fortis Green, that can mean fire-rated sealant around service openings as well as resealing in shared washrooms and kitchens.
Whatever the size of the job, you get the same one-year guarantee.
- Where
- Fortis Green (N10, N2, N6)
- Wider area
- Greater London
- Cover
- One year on every job
- Price
- A clear price before work begins
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Towns and villages near Fortis Green
Other services in Fortis Green
What we do, step by step
On the day, we look over the joints with you first, so you know exactly what we are doing. We protect the surfaces around the joints before any work begins. The work generally takes a few hours for a handful of gaps, and longer for a whole building. In Fortis Green, flats, stairs and shared entrances are part of the routine. If the building has a concierge, managing agent or access rules, tell us when you book.
- Access to each area is agreed so the work can run in order.
- 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.
- Locations and products are written up and any gaps unsuitable for sealant are flagged.
Preparing for the visit
- Mention any sign-in or site rules at work premises
- Mention any parking rules near the property
- Clear the area around the work
Ask for a quote
Need a quote? Please call 0345 464 0079 or drop us an email and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
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FAQs for Fortis Green
I let a flat near Alexandra Palace station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can call 0345 464 0079 or email us with the details for a clear quote.
Is parking an issue for fire rated sealant in Fortis Green?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. That way the visit can be planned around it.
Are you fully insured?
Yes. We’re fully insured.
Can I add another job to the visit?
Yes. Just list everything you need.
Where is Mr Mastic based?
Our base is in Crawley, and we work across South East England, London and Scotland.
Will there be a smell?
There can be a smell while the sealant cures, but it fades. Opening a window helps.
Do you certify the fire stopping?
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, and we install to them.
Should I try DIY first?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.
When something else is needed
We won’t take on work that will not last, so these are the limits:
- Fire doors that need new seals, closers or hardware
- Large holes that need a different fire-stopping system
- Sign-off of the building, which sits with building control or your assessor
If you are not sure, just ring 0345 464 0079 or email us and we’ll give you a straight answer.
Where we work in Fortis Green
- Service penetrations
- Flats & HMOs
- Linear gaps
- Pipe & cable gaps
- Plasterboard & masonry
- Door frames
What affects the quote in Fortis Green
Some jobs are bigger than they look, and some smaller. The main factors:
- Working hours on commercial sites
- The size of the job
- How many rooms, windows or areas are involved
- Which sealant suits the joint
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
Asking for a quote
When you contact us, these details help:
- If it’s domestic, commercial or a hotel
- Roughly how big the job is
- How we’d reach the joints
- Where the property is
We quote each job on its own, so the first step is telling us about yours. Simply phone 0345 464 0079 or drop us an email and describe the job.
Different surfaces, different methods
Linear gaps
Gaps along the top of partitions are easy to miss above a ceiling. We work along the whole run leaving no stretch unsealed.
Flats and HMOs
Conversions usually leave a mix of old and new service holes. We seal the ones on your specification with a tested product.
Fire rated sealant in Fortis Green: local notes
Many London buildings have tight access and loading restrictions, so out-of-hours working can be arranged 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.
For buildings such as United Reformed Church, gaps around pipes and cables are worth checking after any building work there. If you look after a building such as Fortismere School, fire-stopping around service openings should be restored whenever new services go in.
Fortis Green is about 1 mile south-east of Finchley, in Greater London. Every kind of property in Fortis Green can book us for fire rated sealant. The work is guaranteed for a year. 764 places in Greater London are on our list. Our London page covers work nearby, about 7 miles away.
Our applicators cover all of N10, N2 and N6 for fire rated sealant and the streets around it. Whether your property is on Hill Road, Durham Road and Steeds Road or a nearby road, our applicators can take on the job. Main roads around Fortis Green include the A504, which makes travel easy. Neighbouring places we cover for fire rated sealant include Muswell Hill (1 mile east), East Finchley (1 mile west), Highgate (1 mile south), Crouch End (1 mile south-east) and Hampstead Garden Suburb (2 miles south-west). We also work in nearby towns such as London (7 miles south), City of Westminster (5 miles south), Marylebone (5 miles south), Kensington (7 miles south), St Pancras (5 miles south) and Shoreditch (6 miles south-east).
Landmarks near Fortis Green
We work in homes and buildings around Tollington School, Cherry Tree Wood and The Clissold Arms, among other places. The nearest railway station is Alexandra Palace station, roughly 1.4 miles east of the centre. Well-known places in the area include Kenwood House (1.6 miles south-west) and Grand Arcade (1.8 miles north-west). The countryside around Fortis Green includes Highgate Hill and Glebelands Local Nature Reserve.
Looking after it afterwards
To keep the joints looking good and working properly:
- Flag any open gap you spot round a pipe or cable
- Don’t fill fire-stopping gaps with ordinary foam or silicone
- File the fire-stopping record where your assessor can find it
- Ask which product was used before you paint
Look at the sealed gaps as part of your routine walk-rounds. Watch for cracking, gaps or seals that have been disturbed and get them seen to.
If a fire risk assessment has flagged a gap, do not leave it for the next one. Get it sealed and recorded so you can show it was dealt with.
Landlords, agents and businesses in Fortis Green
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. We can quote for more than one property at once.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.