Fire-rated sealing and fire stopping in Willesden Green, Greater London
Planning work on a service penetration in Willesden Green? We assess it, carry out the work and guarantee our workmanship for 12 months.
- Damaged fire seals in risers and voids
- Open linear gaps along the top of fire-resisting walls
- Fire-stopping items raised at inspection or handover
Fire stopping near Willesden Green
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Fire stopping for commercial buildings in Willesden Green
It helps to set out our role at the start. The designer, fire engineer or building control decides which fire stopping is required. We fit the specified fire-rated sealant following that specification and the maker’s installation guidance on buildings around Willesden Green. Most enquiries involve fire-rated sealant that has cracked or shrunk back and unsealed joints where partitions meet the slab, across joints between fire-resisting walls and floors, pipe penetrations and linear gaps at wall heads. Most enquiries from Willesden Green start with one failed joint and grow into a wider look at the building: we check the joints around it and give you an honest view of what needs doing now and what can wait.
In London, higher-risk residential buildings under the Building Safety Act bring extra scrutiny of fire-stopping records. We install what the designer or fire engineer has specified, and if you need records of the work, tell us and we’ll confirm with the quote.
Work we carry out in Greater London comes with a 12-month guarantee. Should something we installed fail, phone 01277 525 020 or email the details over and we will come back to it.
- Where
- Willesden Green (NW10, NW2, NW6)
- Region
- Greater London
- Guarantee
- 12 months on our workmanship
- Quote
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Page updated
- 3 November 2026
What happens if it’s left?
An unsealed opening affects more than fire safety: they also carry noise, draughts and smells between rooms. Sealing them to the specified detail deals with the fire risk first, and the other benefits follow. Getting scaffold, permits or access booked in Willesden Green takes effort, so while access is arranged it pays to renew all failing joints, not just the worst.
We don’t publish prices, because the scope varies so much from one building to the next. Call for a quote.
What you get with us
- Fully insured
- CHAS accredited contractor
- Constructionline member for supplier checks
- Work to your specification and the manufacturer’s guidance
Read what affects the cost and how we’re accredited.
Cost factors for service penetrations
Each job is priced on its own details. The main factors are:
- Joint width, depth and condition
- Induction, permit and paperwork requirements
- How accessible the joints are
- The product specified
Whether it’s a single area or a whole estate, the same things set the price: scope, access, product and programme. Call for a quote, and you will have a fixed figure to work with.
Details that help us quote
A good diagnosis starts with the right details. Tell us:
- How the joints are reached, and at what height
- The site address and postcode
- Approximate linear metres or a joint schedule
- Clear photos of the problem areas
To get a fixed quote, call the office on 01277 525 020 or email a schedule or drawings with the site address and an outline of the work. You can also send details through our quote form.
From enquiry to sign-off
In a busy building, the work is phased so only one area is out of use at a time. Each area is protected, prepared and sealed, then handed back before we move to the next. For a job in Willesden Green, access comes first. Send the building rules and access times with your enquiry.
- We ask for the product and detail your designer has specified.
- We sort the openings by the detail each one needs.
- Improvised fillers and failed sealant are removed.
- Where the detail needs backing, it goes in at the stated depth.
- We gun the sealant in to the specified depth around each service and tool it.
- Completed areas are checked with you, with the records agreed when we quoted.
Before we start on site
- Clear stock, furniture or equipment away from the joints
- Warn occupants and staff about the work
- Explain the parking and delivery arrangements
Request a quote
If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price against exactly what is specified. Smaller jobs need nothing more than photographs and a few notes.
Read more
Places near Willesden Green
Other services in Willesden Green
After the work
Every sealant joint needs some looking after, and their life depends on movement, exposure, cleaning and use. We suggest:
- Foam or ordinary sealant is never a fire-seal repair
- Ask which product is in place before decorating
- Agree the fire-stopping specification before services go in
- Flag new cables with no seal around them
Give the sealant its full cure time before ceilings, boxing or decoration go over it. Some fire-rated sealants accept paint and some don’t, so check the product data first.
The simplest way to keep compartment walls intact is to plan fire stopping into every job that crosses them. That way the opening is sealed while the trade and access are still there.
Should maintenance staff do it?
Redoing a failed joint normally costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. That’s why many clients bring in a specialist from the beginning.
What you see is the finished bead, but most of the work is hidden. Backing rod, primer where specified and a joint designed to move with the building are where general trades tend to cut corners.
Willesden Green: questions and answers
Do you cover business parks and estates near Willesden Green, such as Cumberland Business Park?
Yes, sites like Cumberland Business Park are within our area, along with the rest of Willesden Green. Send details of the unit and the work through our quote form for a quick quote.
What happens to BS 476 references for fire stopping in Willesden Green?
From 2 September 2029, Approved Document B drops its BS 476 references in favour of BS EN 13501-2 classification, with transitional arrangements. Our part doesn’t change: the specified product, to its tested detail.
When can the area be used after sealing?
Curing time varies by product, and we confirm it on the day.
Do you work to architects’ specifications?
Yes. Include it with the drawings when you ask for a quote, and we’ll price the work to it, flagging anything that needs clarifying.
Can you fit around our working hours?
The office is staffed Monday to Friday, from 8am until 5pm. Tell us your site hours and access windows and the work will be fitted around them.
Do you hold CHAS accreditation?
Yes. We are CHAS accredited and a Constructionline member.
How many days will you need on site?
That varies with the scale of the job, though a typical visit usually takes longer where risers, ceiling voids or occupied floors have to be worked through in sequence. For bigger or phased jobs, we’ll set out a timescale with the quote.
Compartment walls and floors in Willesden Green
Willesden Green has plenty of hotels close by, all within 2 miles. Bedroom-to-corridor walls in hotels are normally fire-resisting, so new cabling or pipework through them has to be sealed to the tested detail. In England, Approved Document B covers fire stopping of openings and penetrations. Its BS 476 references are being withdrawn from 2 September 2029, with BS EN 13501-2 classification taking over, subject to transitional arrangements. Either way, we install the specified product to its tested detail.
At a university such as Imperial College London, 1.9 miles to the south of Willesden Green, labs, lecture blocks and residences are re-serviced often, so penetration seals are best checked after M&E work. On a site such as Cumberland Business Park, which lies south of Willesden Green, every fit-out that runs new services through a compartment wall leaves penetrations to seal with the specified product.
Willesden Green is about 1 mile south-east of Neasden, in Greater London. Any commercial site in Willesden Green is covered. Willesden Green is one of 764 places in Greater London on our list for service penetrations. We also cover London, some 7 miles away.
Postcode districts covered here: NW10, NW2 and NW6. If your site is on Fry Road, High Road and Dean Road or close by, send details and we will quote for service penetrations. We also cover Willesden (1 mile north), College Park (1 mile south), Kensal Green (1 mile south), Harlesden (1 mile south-west) and Kensal Rise (1 mile south-east) for service penetrations. Bigger towns within reach include London (7 miles south-east), City of Westminster (4 miles south-east), Marylebone (4 miles south-east), Kensington (3 miles south-east), St Pancras (5 miles east) and Shoreditch (7 miles east).
Near you in Willesden Green
Locally, jobs take us to sites close to Roundwood Park, Brondesbury College and Capital City Academy. The nearest railway station is Kensal Rise station, roughly 0.7 miles south-east of the centre. Other landmarks nearby include O2 Centre (2.2 miles east) and Brent Museum and Archives (under half a mile north). The countryside around Willesden Green includes Campden Hill and Westbere Copse.
Signs you need fire stopping in Willesden Green
Mixing products or improvising a detail breaks the link with the test evidence. Gaps beyond the tested size, shallow sealant, no backing where it was needed, or products from different systems mixed together are what we find most often.
Look out for the following:
- Seals disturbed by maintenance and left open
- Penetration schedules that need working through
- Builders’ foam or ordinary silicone in compartment walls
- Old intumescent sealant that has split away
Shop fits in centres such as Brent Cross Shopping Park, 2.1 miles to the north of Willesden Green, can bring new services through fire-resisting walls between units, which then need the specified seal.
Before you book anyone
- How they handle RAMS and site documents
- Do they follow the manufacturer’s priming guidance?
- Whether their applicators hold CSCS cards
- The named product and why it was chosen