Greater London · England
Fire Rated Sealant in Whetstone
Intumescent and fire-rated sealant around gaps, frames and service penetrations for homeowners, landlords and businesses in Whetstone. Fully insured, ARBOMaster approved and guaranteed for a year.
- Damaged fire sealant left by other trades
- Open joints along the top of partitions
- Ordinary sealant used where a fire-rated product was needed
Fire rated sealant for homes and businesses in Whetstone
Until it’s heated, intumescent sealant behaves like an ordinary sealant; in a fire it expands into the joint. The right product depends on the gap size, the substrate and what passes through, so we follow the tested detail for each one. We work on plasterboard & masonry, service penetrations and pipe & cable gaps, and common reasons people get in touch are open joints along the top of partitions and unsealed gaps where pipes and cables go through a wall.
Commercial work in London comes with its own logistics: loading restrictions, building rules and tight access. For a building in Whetstone, we agree timings and access before anything starts.
You’re covered for a year from the day we finish. If anything is not right with it, call 0345 464 0079 or email us.
- Location
- Whetstone (N12, N20, N11)
- Region
- Greater London
- Guarantee
- A year, on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
How the job changes by surface
Masonry and concrete
Preparation counts on brick, block and concrete. We brush and vacuum the gap and use backing where the detail needs it.
Linear gaps
Linear gaps run along the head of walls, at floor edges and between panels. They’re sealed with a fire-rated sealant over backing where the detail calls for it.
Also near Whetstone
What else we do in Whetstone
When something else is needed
Honest advice matters more to us than a booking, so here’s what sealant cannot fix:
- Large holes that need a different fire-stopping system
- Sign-off of the building, which sits with building control or your assessor
- Problems with the door itself rather than the gap around the frame
If in doubt, call 0345 464 0079 or send us an email and we’ll say what we think before booking.
Joints and surfaces we work on
- Linear gaps
- Plasterboard & masonry
- Door frames
- Pipe & cable gaps
- Service penetrations
- Flats & HMOs
Leave it or put it right?
Sealant is not the fix for every opening. Big openings, bundles of cables and plastic pipes may need batts, collars or wraps instead. If a gap is not suitable for sealant, we will tell you. Damp from a failed joint spreads quietly in older London brickwork and timber, and by the time it shows on a wall or ceiling in Whetstone, the repair is bigger than the sealant job would have been.
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
What you get with us
- Tidy, careful work
- Anti-fungal sanitary silicone in wet areas
- Arbo and Everbuild products
- Approved under the ARBOMaster scheme
Take a look at what affects the cost and our reviews.
Can I do it myself?
Some sealant jobs are within reach of a careful DIYer, 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.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is.
What affects the cost of fire rated sealant
Some jobs are bigger than they look, and some smaller. What affects the quote:
- How much there is to do
- Whether old sealant or filler has to be cut out
- Any mould that needs treating
- Any working-time requirements on site
We don’t show prices on the website, because the cost depends so much on the job itself. For a quick quote, please phone 0345 464 0079 or email us.
Helping us quote
When you call or email, these details help:
- Any access issues, like height or stairs
- Roughly how big the job is
- Where the job is, and your postcode
- Pictures of the joints, sent by email
It all starts with a short chat. Describe the problem, the location and the size of the job. Whenever you’re ready, ring 0345 464 0079 or drop us an email.
Whetstone questions
Can you help a landlord with a rental near Oakleigh Park station?
Yes, we work for landlords and agents. You can ring 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before work begins.
Is Whetstone in your area for fire rated sealant?
Yes. Our work covers London and the South East, and Whetstone is part of that. Just call 0345 464 0079 or email us with a few details of the job, and we will give you a clear price.
Can ordinary silicone be used in a fire-stopping gap?
No. A gap that needs fire stopping needs a tested fire-rated product.
Where do you work from?
We are based in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
Should I try DIY first?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs.
Can I choose the sealant colour?
In most cases you can choose. We’ll tell you which colours the right product comes in.
What do you need from me for a quote?
Just the basics: where it is, what you’ve noticed and how we reach it. After that, simply phone 0345 464 0079 or drop us an email.
Will we have a record of what was sealed?
Yes. Every gap we seal is listed with the product used so it’s there for the next inspection.
How the visit works
When we arrive, we look over the joints with you first. We protect the surfaces around the joints before any work begins. Most jobs take anything from a few hours to several days, depending on how many gaps there are. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. Mention any building rules, key holders or managing agents when you book.
- We begin by agreeing the list of gaps from your assessor’s or designer’s requirements.
- We measure every gap and note what it’s in and what passes through.
- Unsuitable material such as ordinary foam or silicone is cut out and the gap cleaned.
- The specified fire-rated sealant goes in over any backing its detail requires.
- Every location is recorded with the product used for your files.
Getting ready for the visit
- Keep pets and children clear of the area while we work
- Let us know about stairs, lifts or work at height
- Clear the area around the work
Get a quote
Need a quote? Please phone 0345 464 0079 or drop us an email and tell us about the job. We’ll explain what we’d do and send you a clear quote before work begins.
Related advice
Commercial buildings in Whetstone
Commercial buildings in London often have strict access rules and limited loading, 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, which is often where open fire-stopping gaps are first noticed. We work to the specification you are given, installing the product to its tested details.
As a London address, Whetstone can be tricky for parking: tell us about permits, visitor bays or off-street space when you book. Community buildings like Church of St John are part of the picture too: gaps around pipes and cables are worth checking after any building work there.
Whetstone is about 7 miles north of St Pancras, in Greater London. For fire rated sealant in and around Whetstone, it’s easy to get a quote: please call 0345 464 0079 or email us. We’re based in Crawley and cover Greater London. Our Greater London coverage runs to 764 places, Whetstone among them. You can also see our page for London, about 9 miles away.
We cover every part of N12, N20 and N11 for fire rated sealant. If you need fire rated sealant at a property on High Road, Swan Lane and Dene Road or anywhere close by, our applicators can take on the job. Being close to the A1000, Whetstone is easy for our applicators to reach for fire rated sealant. Neighbouring places we cover for fire rated sealant include Oakleigh Park (1 mile west), North Finchley (1 mile south), Woodside Park (1 mile south-west), East Barnet (1 mile north-east) and Brunswick Park (1 mile east). Within a short drive, we also cover London (9 miles south), City of Westminster (8 miles south), Marylebone (8 miles south), Kensington (9 miles south), St Pancras (7 miles south) and Shoreditch (8 miles south-east).
Landmarks near Whetstone
Around Whetstone, our work takes us to homes and buildings near Finchley Catholic High School, Francis Skaryna Belarusian Library and Museum and Woodhouse College and the streets around them. You will also find Three Horseshoes pub (within half a mile north-west) and Swan Lane Open Space (within half a mile west). For rail, the closest station is Oakleigh Park station, roughly 0.8 miles north of the centre. A little further out are Grand Arcade (0.9 miles south) and Francis Skaryna Belarusian Library and Museum (0.9 miles south-west). Not far away are Highgate Hill and Barfield Allotments Nature Park.
Signs you need fire rated sealant in Whetstone
In some buildings the gap was filled with the wrong thing in the first place: ordinary expanding foam, standard silicone or decorators’ caulk in a place that needed a tested fire seal. It looks sealed, but it isn’t fire-rated.
If you can see any of these, it’s time to have the joints looked at:
- Fire seals that have cracked with movement
- Gaps around pipes and cables through fire-resisting walls
- Open gaps behind door architraves
- Gaps flagged on a fire risk assessment
Schools such as Queenswell Infant & Nursery School are buildings too, and fire-stopping around service openings should be restored whenever new services go in.
Comparing quotes
- Are they insured?
- What happens if they find a problem under the old sealant
- Is VAT in the price?
- Whether the sealant suits the joint