Greater London · England
Fire Rated Sealant in Barnet
Fire rated sealant in Barnet from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Open gaps behind door architraves
- Standard silicone or caulk in a fire-stopping gap
- Gaps flagged on a fire risk assessment
Looking after it afterwards
So the new joints stay in good condition:
- Store the list of sealed gaps with your building paperwork
- Never patch a fire seal with standard sealant
- Plan fire stopping into any work that goes through walls or floors
- Look in service cupboards and ceiling voids from time to time
Avoid covering a sealed gap with anything that is not part of the tested detail. Repairs should use a matching fire-rated product. We can tell you which product we used.
It’s easiest to seal gaps while they’re few and easy to reach. Leave them and each new job adds another hole and the job gets bigger.
Fire rated sealant in Barnet
We often work from an action list drawn up by a fire risk assessor for buildings in Barnet. Send us the list or the survey and we will quote for the fire-rated sealant work on it. We work on pipe & cable gaps, plasterboard & masonry and service penetrations, and people most often call us about unsealed gaps where pipes and cables go through a wall and door frames with gaps between frame and wall.
London blocks of flats carry pipes and cables through walls and floors in their common parts and service risers. In Barnet, building managers may need both fire-rated sealant around those openings and new sealant in shared washrooms.
The work is covered for a year after we finish. If there’s a problem with it, please phone 0345 464 0079 or send us an email.
- Place
- Barnet (EN5, EN4, N20, N11)
- Region
- Greater London
- Guarantee
- 12 months on all our work
- Quote
- A clear price before work begins
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What happens if it’s left?
Doing it once, properly, beats doing it twice. Work that does not follow the tested detail may have to come out again once someone inspects it. Damp from a failed joint spreads quietly in older London brickwork and timber, and once it shows in Barnet, the repair is bigger than a sealant job.
The cost reflects the work involved, not guesswork. That’s why we ask about the job first and send you a clear quote before any work starts.
What you get with us
- A 12-month guarantee on all work
- Arbo and Everbuild products
- Over 20 years’ experience
- Domestic, commercial and hotel work
Take a look at how sealant jobs are priced and what customers say.
Questions from Barnet
Is parking an issue for fire rated sealant in Barnet?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. The visit is then planned around what’s available.
Can you do fire rated sealant in Barnet?
Yes, Barnet is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or send us an email and let us know what needs doing, and we will send you a clear quote.
Do the sealants smell?
It depends on the product. Some smell for a while, some hardly at all.
Do you do fire sealant around door frames?
Yes. We often seal open gaps hidden behind the architrave. The door and its fittings are a separate job for a door specialist.
Can I use normal mastic around a pipe through a fire wall?
No. It might close the gap, but it is not a fire-rated seal. Use a product tested for that gap and service.
Do you guarantee your work?
Yes. Every job comes with a one-year guarantee.
Can you work in occupied buildings?
Yes, in flats, HMOs, schools, offices and other buildings, occupied or empty. Tell us how the building is used and we will plan around it.
Will you assess my building’s fire safety?
No. Your fire risk assessor, designer or building control decides that. We apply fire-rated sealant to the requirements they set.
Towns and villages near Barnet
Also in Barnet
Can I do it myself?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is.
When something else is needed
Honest advice matters more to us than a booking, so here’s what sealant cannot fix:
- Big openings where sealant alone is not the tested solution
- A wall that is not a fire-resisting element to begin with
- Fire doors that need new seals, closers or hardware
If in doubt, ring 0345 464 0079 or drop us an email and we’ll say what we think.
What we seal
- Plasterboard & masonry
- Linear gaps
- Flats & HMOs
- Service penetrations
- Pipe & cable gaps
- Door frames
The process
Most of a good job is in the preparation, and we don’t rush it. Every joint is cleaned and dried before new material goes in. In total, it usually takes a few hours for a handful of gaps, and longer for a whole building. In Barnet, 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.
- Before starting, we go through the specification or action list with you.
- Each gap is measured and its substrate and service noted.
- Unsuitable material such as ordinary foam or silicone is cut out 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 files.
Before we arrive
- Mention any tricky access
- Tell us if parking is tricky
- Clear items away from the joints we are working on
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 email pictures if that’s easy.
Advice
Fire rated sealant in Barnet: 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 work to the specification you are given, installing the product to its tested details.
If you look after a building such as Grasvenor Avenue Infant School, service openings in fire-resisting walls need checking after any refurbishment. Community buildings like St John's United Reformed Church are part of the picture too: older buildings that have had new heating or wiring often have service gaps worth checking.
Barnet is about 9 miles east of Watford, in Greater London. For fire rated sealant in and around Barnet, please call 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover Greater London, Barnet included. Our Greater London coverage runs to 764 places, Barnet among them. Our London page covers work nearby (11 miles or so).
Our applicators cover all of the EN5, EN4, N20 and N11 postcode area for fire rated sealant. Local streets include Station Road, High Street and Sambroke Square, all of which we cover. Barnet sits on or near the B193 and A1081. We also cover Underhill (1 mile west), New Barnet (1 mile east), Monken Hadley (1 mile north-west), Hadley Wood (1 mile north-east) and Cockfosters (1 mile east). We also work in nearby towns such as London (11 miles south), City of Westminster (9 miles south), Marylebone (9 miles south), Kensington (10 miles south), St Pancras (9 miles south) and Shoreditch (10 miles south-east).
Around Barnet
In Barnet, that means homes and buildings near Queen Elizabeth's Girls' School, The Railway Tavern and Highlands Gardens. The closest station to Barnet is New Barnet station, roughly 0.6 miles east of the centre. Nearby you’ll also find Barnet General Hospital (1.2 miles west) and Francis Skaryna Belarusian Library and Museum (2.1 miles south). Not far away are Darland's Lake and Greenhill Gardens.
When to call us in Barnet
Door frames are a common weak spot. The architrave hides the gap between frame and wall, so it can be left open when a door is replaced.
Keep an eye out for these signs:
- Gaps left after a refit or conversion
- Open joints along the top of partitions
- Cracked or shrunken fire-rated sealant
- Gaps around pipes and cables through fire-resisting walls
As a London address, Barnet can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Questions to ask before booking
- What product goes in the joint
- Who does the work, and how experienced they are
- What happens if the job turns out different
- What the quote includes, VAT included or not
What the job involves on each surface
Door frames
Frame gaps are normally hidden behind the architrave. Where it’s open, we seal it to the product’s details for that gap size so the architrave can be refitted.
Plasterboard walls
Holes in plasterboard are often cut roughly for services. Gaps that are too big for sealant alone need a different detail, and we’ll tell you.