Greater London · England
Fire Rated Sealant in North Finchley
Fire rated sealant for North Finchley, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Gaps left after a refit or conversion
- Open joints along the top of partitions
- Fire seals that have cracked with movement
How we handle fire rated sealant in North Finchley
Where services or frames pass through a fire-resisting wall or floor, the gap around them needs a fire-rated seal. We apply intumescent and fire-rated sealants to the manufacturer’s tested details for each gap, and we can record what went where. Common call-outs are for gaps around pipes and cables through fire-resisting walls and sealant items on a fire risk assessment action list, across linear gaps, door frames and flats & HMOs.
London blocks of flats carry pipes and cables through walls and floors in their common parts and service risers. In North Finchley, building managers may need both fire-rated sealant around those openings and new sealant in shared washrooms.
You get a 12-month guarantee, the same in North Finchley as everywhere else we work.
- Place
- North Finchley (N12, N20, N11)
- Region
- Greater London
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What we’re called out for in North Finchley
Many open fire-stopping gaps are made after the building is finished. Electricians, plumbers and data installers drill through walls and ceilings and the hole round the new service is not always sealed again.
The problems people generally mention when they call include:
- Seals cut through by electricians, plumbers or data installers
- Gaps left after a refit or conversion
- Unsealed gaps around fire door frames
- Gaps filled with a product that is not fire-rated
North Finchley is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Comparing quotes
- Who does the work, and how experienced they are
- What guarantee comes with the work
- What preparation is included
- Which sealant they’ll use, and why
Landlords, agents and businesses in North Finchley
Letting agents often deal with us directly. Tell us the address, the job and how access works and we’ll quote.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
The process
Every visit runs the same way: we check the joints, protect the area around them, do the work and tidy away. Most jobs take anything from a few hours to several days, depending on how many gaps there are. In North Finchley, as in most of London, parking needs a little planning. A visitor permit or a nearby bay makes the visit run more smoothly.
- 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.
Before we arrive
- Clear the area around the work
- Keep children and pets away from the work area
- Tell us about access, such as stairs, a lift or high-level joints
How to get a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and email photos if that is easy.
Related advice
Why it’s worth doing now in North Finchley
Leaving a gap until a refurbishment comes round can mean years with it open. Sealing the gap now is a contained job on its own that doesn’t depend on other work. Damp from a failed joint spreads quietly in older London brickwork and timber, and once it shows in North Finchley, the repair is bigger than a sealant job.
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs, along with when we can work on site. Ask us for a quote and we’ll go through it with you.
Why book with us
- Homes, businesses and hotels
- Trusted Arbo and Everbuild sealants
- We leave the area clean and tidy
- Approved under the ARBOMaster scheme
What affects the quote in North Finchley
We quote each job individually. This is what makes a difference:
- The number and length of the joints
- Any working-time requirements on site
- Mould in or behind the old joints
- How easy the joints are to reach
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or drop us an email and we will talk you through it.
Helping us quote
When you contact us, it’s useful to know:
- The problem you’ve noticed
- The type of property
- The address or postcode of the job
- How we’d reach the joints
We do not publish a price list. Instead, your job gets its own clear quote. To get started, phone 0345 464 0079 or send us an email.
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 fails, we can still redo it.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Fire rated sealant around North Finchley
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 apply fire-rated sealant to the assessor’s or designer’s specification and the product’s tested details. Many London buildings have tight access and loading restrictions, and out-of-hours working is possible to arrange.
Managing a site like Sacks Morasha Jewish Primary School? Then gaps opened by contractors for new cabling are a common finding in schools and offices. If you look after a church, hall or community building such as St. Barnabas Church, gaps around pipes and cables are worth checking after any building work there.
North Finchley is about 1 mile north of Finchley, in Greater London. Wherever you are in the N12 postcode area, our applicators can take on fire rated sealant. We cover 764 towns and villages across Greater London. London is on our list too, about 9 miles from North Finchley.
Postcode districts we cover here for fire rated sealant: N12, N20 and N11. That includes homes and businesses on High Road, Lodge Lane and Percy Road and the roads around them. Main roads around North Finchley include the A1000. If you are just outside North Finchley, we cover Woodside Park (1 mile west), Oakleigh Park (1 mile north), Whetstone (1 mile north), Friern Barnet (1 mile east) and Finchley (1 mile south). We also work in nearby towns such as London (9 miles south-east), City of Westminster (7 miles south), Marylebone (7 miles south), Kensington (8 miles south), St Pancras (7 miles south) and Shoreditch (8 miles south-east).
Local landmarks in North Finchley
Typical jobs here are in homes near Friary Park, Woodhouse College and The Bohemia pub. Also close by are Francis Skaryna Belarusian Library and Museum (0.5 miles west) and St Michael's Catholic Grammar School (under half a mile south-west). The nearest railway station is New Southgate station, about 1.4 miles east. Nearby you’ll also find Finchley Memorial Hospital (0.8 miles south) and Francis Skaryna Belarusian Library and Museum (0.5 miles west). For a walk, there’s Darland's Lake and Glebelands Local Nature Reserve.
Nearby places to North Finchley
Other services in North Finchley
How to look after the new joints
To keep the joints looking good and working properly:
- Keep the record of products and locations with your fire safety documents
- Allow for resealing whenever new services are run
- Make resealing part of every contractor’s brief
- Flag any open gap you spot round a pipe or cable
Tell other trades that the gaps have been sealed, and make sure anything they disturb is resealed with a suitable product. A lot of damaged fire stopping comes from later work.
It’s easiest to seal gaps while they’re few and easy to reach. Leave them and each new job adds another hole.
Common questions in North Finchley
Is parking a problem for a job in North Finchley?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. That way the visit can be planned around it.
I let a flat near New Southgate station. Can you help?
Yes. We work for letting agents and landlords as well as householders. Just call 0345 464 0079 or email us with the address and what needs doing, and we will give you a clear quote.
Is it worth trying it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Which products do you use?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
Can you match the sealant colour?
Yes. Sealants come in white, clear, grey and other colours for many products, and we agree the colour with you before work begins.
Do you seal gaps around fire door frames?
Yes. The joint between frame and wall is sealed with a fire-rated sealant, to the product’s details. The door leaf and its hardware need a door specialist.
Will it make a mess?
No. The area is protected while we work and cleaned up afterwards.
Where is Mr Mastic based?
We’re based in Crawley, and we work across South East England, London and Scotland.