Fire stopping in Lissenden Gardens
Fire-rated and intumescent sealing of service penetrations and linear gaps across Lissenden Gardens, by CSCS-carded applicators. CHAS accredited and fully insured.
- Expanding foam used as fire stopping
- Seals disturbed by maintenance and left open
- Penetration schedules that need working through
Fire stopping across Lissenden Gardens
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Surface by surface
Plastic pipes
In a fire, plastic pipework melts away and leaves an opening. Small sizes are sometimes covered by an intumescent sealant detail, but many need a collar or wrap. We check the pipe material and diameter against the detail before we start.
Drylining partitions
Holes in board are often cut larger than needed. An oversized hole may be outside the sealant’s range, and the detail may call for board patching or another product.
Fire stopping for commercial buildings in Lissenden Gardens
Penetration seals are fire tested to BS EN 1366-3 and linear joint seals to BS EN 1366-4. That classification, such as EI 60 or EI 120, belongs to the product in its tested arrangement. So our job is to reproduce that arrangement faithfully. We work on pipe penetrations, service gaps in risers and linear gaps at wall heads, and the failures we are asked to look at most are openings left by services added after handover and seals disturbed by maintenance and left open. Looking for mastic applicators who cover Lissenden Gardens? We’ve been sealing commercial buildings since 2005, with CSCS-carded applicators.
London has many occupied offices, blocks and mixed-use buildings where services are added and rerouted all the time. Where the specification names fire-rated sealant, it goes in exactly as the manufacturer’s test evidence shows for that wall or floor.
Our 12-month guarantee is about workmanship, not wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we are clear about what is covered before work starts.
- Place
- Lissenden Gardens (NW5, NW3, N19)
- Region
- Greater London
- Guarantee
- 12 months on every job
- Quotes
- Quoted before any work starts
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
What we are called out for in Lissenden Gardens
On a busy project, programme pressure can mean fire stopping is rushed or left to whichever trade is closest. That is how unsuitable products and improvised details end up in compartment walls and later need putting right.
It’s worth sending us details if you spot any of the following:
- Seals disturbed by maintenance and left open
- Old intumescent sealant that has split away
- Fire-stopping items raised at inspection or handover
- Openings found when ceilings come down for a refit
In a retail centre such as O2 Centre (1.5 miles south-west of Lissenden Gardens), any fire-resisting wall between units that is crossed by new services needs sealing to the tested detail.
Comparing quotes
- Can the work be phased to keep areas open?
- Their public liability cover
- Who will actually carry out the work
- Do they follow the manufacturer’s priming guidance?
Why act early in Lissenden Gardens
Sealing behind the M&E trades area by area beats a sweep at the end. Openings are visible, access is open and nothing has to be taken down. Repeat call-outs disrupt occupied London buildings, so cutting the old sealant out fully and doing it right once is the better route.
Quantities, awkward access and phased working all shape the price. Site requirements like inductions and permits play a part as well.
Why appoint us
- Our applicators hold CSCS cards
- CHAS accredited
- Workmanship guaranteed for 12 months
- Over 20 years of commercial sealing
Read how commercial sealant jobs are priced or our accreditations.
Fire stopping in Lissenden Gardens: the local picture
With tenants changing and fit-outs following, London buildings see service routes altered again and again. We install fire-rated sealant where it is specified and work within the building manager’s permit system. Lissenden Gardens has six care or nursing homes no more than 2 miles away. Care homes rely on fire-resisting walls and floors, and maintenance work that breaks through them leaves openings to seal.
At a university such as American University in London, 1.5 miles to the east of Lissenden Gardens, labs, lecture blocks and residences are re-serviced often, so penetration seals are best checked after M&E work. Colleges such as Working Men’s College, 0.8 miles to the south-east of Lissenden Gardens, add IT and services as courses change, and each new penetration through a fire-resisting wall needs sealing with the specified product.
Lissenden Gardens is about 1 mile east of Hampstead, in Greater London. Any commercial site in Lissenden Gardens is covered, for single jobs and planned programmes alike. We work across 764 places in Greater London.
Commercial sites across NW5, NW3 and N19 are covered for service penetrations. Buildings on Rona Road, Dale Road and Fleet Road are within our area for service penetrations. Sites close to Lissenden Gardens are covered too, including Gospel Oak (1 mile south), Dartmouth Park (1 mile north-east), Tufnell Park (1 mile east), Kentish Town (1 mile south) and Chalk Farm (1 mile south). Bigger towns within reach include London (5 miles south-east), City of Westminster (3 miles south), Marylebone (3 miles south), Kensington (5 miles south-west), St Pancras (3 miles south-east) and Shoreditch (4 miles south-east).
Around Lissenden Gardens
Recent enquiries here include premises near Parliament Hill, The Royal School and Gospel Oak Primary School. Nearby too are The Bull and Last pub (less than half a mile north-east) and Cecil Sharp House (1.3 miles south). Lissenden Gardens has its own railway station: Gospel Oak station. Well-known places in the area include Royal Northern Hospital (1.2 miles east) and Montfichet's Tower (3.7 miles south-east). The countryside around Lissenden Gardens includes Parliament Hill and The Long Water.
Towns and villages near Lissenden Gardens
Also in Lissenden Gardens
Diagnose, treat, sign off
Tell us your site hours and access windows and we’ll plan around them. While we are working, the area stays contained and tidy, and we check in with your contact before moving on to each new area. Planning a London job such as one in Lissenden Gardens starts with access. Give us the hours we can be on site and we will schedule to suit.
- The specification and schedule come first, so we know which details apply.
- Access, permits and the order of areas are agreed with the site team.
- Each opening is checked for wall or floor type, service, gap and depth.
- Unsuitable material is removed and the opening cleaned.
- The specified backing and sealant go in to depth and are finished neatly.
- We tell you about openings that need a different product.
Getting the site ready
- Send any specification or drawings in advance
- Share your working hours and any access restrictions
- Make sure the joints can be reached
Quotes
For a fixed quote, call the office on 01277 525 020 or email a schedule or drawings, telling us the site location and the nature of the job. You can also send details through our quote form.
Read more
Cost factors for service penetrations
There’s no standard rate for sealant work, because every site is different. What we look at:
- Backing rod, priming and other preparation
- Access and working height
- Which sealant the job calls for
- Removal of failed or old sealant
A quote for service penetrations depends on quantities, condition and access, plus any specification you’re working to. Ask us for a fixed quote.
Before you send an enquiry
A few photographs plus some basic facts will normally do. Please tell us:
- Asbestos survey details if the building is older
- Drawings or a marked-up plan, if available
- Clear photographs of the problem areas
- Your programme or deadline
Quotes are fixed against the scope you send, so the cost is agreed before work starts. To start the process, ring 01277 525 020 or email a schedule or drawings.
What we can’t put right
Not every problem is a sealant problem, and we are upfront when that’s the case. These need a different solution:
- Fire doors, dampers or other fire safety equipment
- Plastic pipes whose detail calls for a collar or wrap
- Writing the fire-stopping specification
If in doubt, call 01277 525 020 or send details through our quote form and we will say what we think before you book.
What we seal
- Service gaps in risers
- Small duct penetrations where the tested detail allows
- Joints between fire-resisting walls and floors
- Linear gaps at wall heads
- Cable penetrations
- Pipe penetrations
FAQs: Lissenden Gardens
Do you seal service penetrations in hotels around Lissenden Gardens?
Yes. We install fire-rated and intumescent sealant where it is specified. It goes in to the manufacturer’s tested detail for the wall or floor and the services passing through, and we will tell you if the detail calls for a collar, wrap or batt instead.
Is a hospital such as Royal Free Hospital somewhere you can work?
Yes, healthcare and care buildings are part of our work. Work is phased so departments keep running, under the site’s own rules.
Will your applicators have CSCS cards?
Yes. Should the site need card details in advance, tell us and we’ll confirm them with the quote.
Can you follow the specification on our project?
Yes. We follow the specification, along with the manufacturer’s installation guidance.
When is resealing likely to be due?
There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Treat them as maintenance items and inspect them regularly.
How do we ask for a quote?
You can use the quote form on this site; alternatively, call 01277 525 020 or use the quote form. Include photographs or drawings if you have them.
Is the work guaranteed?
Yes. Workmanship is guaranteed for 12 months.