Stockwell fire stopping
Fire-rated and intumescent sealing of service penetrations and linear gaps in Stockwell. CHAS accredited and fully insured, with a 12-month guarantee.
- Fire seals cut back for extra cables and never reinstated
- Builders’ foam or ordinary silicone in compartment walls
- Hidden openings found during inspections
Need fire stopping in Stockwell?
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
How we handle fire stopping in Stockwell
Where pipes, cables and other services cross a compartment wall or floor, the opening around them has to be closed so fire and smoke can’t move between compartments. Our part is installing fire-rated and intumescent sealant at those openings and along linear gaps, where the specification calls for it. We work to the product’s tested detail for every seal rather than guesswork. We work on linear gaps at wall heads, service gaps in risers and small duct penetrations where the tested detail allows, and the failures we’re asked to look at most are fire-rated sealant that has cracked or shrunk back and unsealed penetrations discovered above suspended ceilings. A single leaking joint is often how a building in Stockwell first comes to us: we look at the rest while we’re there and tell you what we find.
After a fit-out or new cabling in a London building, risers and ceiling voids are where open service gaps tend to be found. If sealant is the specified product we fit it to its tested detail, and if the detail needs something else, you’ll hear it from us.
We stand by our work: 12 months, guaranteed. It covers how we prepared and applied the sealant, and we come back if anything isn’t right.
- Location
- Stockwell (SW9, SW4, SW8)
- Wider area
- Greater London
- Cover
- 12 months on every job
- Quote
- A fixed quote before we start
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
From enquiry to sign-off
Before we leave any area, we remove the tape, clean down and inspect every joint. If an area should be left alone while the sealant cures, we say how long and put signs out. Planning a London job such as one in Stockwell starts with access. Send the building rules and access times with your enquiry.
- 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.
- We compare every service penetration with its tested detail before sealing.
- Foam, ordinary sealant and debris come out so the seal starts clean.
- Backing and fire-rated sealant are installed to the detail and tooled.
- We tell you about openings that need a different product.
Before we start on site
- Send any specification or drawings in advance
- Warn occupants and staff about the work
- Send asbestos survey details if the building is pre-2000
Getting a fixed quote
The quickest route to a quote is a few photos and the site postcode. Upload them with the quote form, or ring 01277 525 020 or send details through our quote form to discuss it first.
Related advice
FAQs: Stockwell
How does the move away from BS 476 affect penetration seals in Stockwell?
References to BS 476 classes are being removed from Approved Document B from 2 September 2029, after which BS EN 13501-2 classification is the route, subject to transitional arrangements. The designer or fire engineer sets the specification, and we install the product to the manufacturer’s tested detail.
Can you work around term dates at a campus such as King's College London?
Yes. We plan campus work around teaching, exams and residence turnarounds. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.
Can you fit around our working hours?
We’re in the office from 8am until 5pm, Monday to Friday. Let us know your site hours and access windows, and the work will be planned around them.
How long before the joints can be used?
That comes down to the sealant and the temperature. Some take light use quickly, others need longer to cure, so we will confirm the curing time on the day.
Does weather matter for sealant work?
Outside, yes. Sealant needs a dry joint and a temperature within the product’s range, so frost, rain or cold mornings can delay outside work. Inside work is seldom held up.
Do you seal on top of existing sealant?
No. Overlaying old sealant is a frequent cause of early failure, so it all comes out first.
What will the job cost?
Each job is quoted on its own details. To get one, call 01277 525 020 or email a schedule or drawings with a description of the work.
What affects the price in Stockwell
A fixed quote reflects the actual work. It takes account of:
- Specialist products, such as fire-rated or hygienic sealants
- Travel to remote or island sites
- Whether the work must be split into stages
- Backing rod, priming and other preparation
What a job costs comes down to the quantity of joints, what has to come out first and how the joints are reached. Call for a fixed quote when you are ready.
Sending details for a quote
There’s no need for a formal survey. These details are enough to start:
- How the joints are reached, and at what height
- Your programme or deadline
- The postcode of the building
- Any specification or named product
Quotes are fixed against the scope you send, so the cost is agreed before work starts. To ask for one, phone 01277 525 020 or email a schedule or drawings.
Why it’s worth doing now in Stockwell
Fire stopping is a regular point raised at inspections and handover. Finding unsealed or improvised openings late can hold up a programme which is why earlier is better. Getting scaffold, permits or access booked in Stockwell takes effort, so while access is arranged it pays to renew all failing joints, not just the worst.
Pricing service penetrations depends on quantities, condition and access, plus any specification you’re working to. Ask us for a fixed quote.
What you get with us
- Work carried out by CSCS-carded applicators
- CHAS accredited contractor
- 12-month guarantee on workmanship
- Joints cleaned back to sound surfaces
See our cost guide or our accreditations.
Penetration seals near Stockwell
Approved Document B is the English guidance that covers fire stopping around 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. We install whatever has been specified, to the product’s tested detail. Every new tenant in a London building tends to bring new cabling, and with it new holes through compartment walls. Penetrations are sealed with the specified product, to its tested detail, under the building’s own permit rules.
Industrial units on estates such as Ellerslie Square Industrial Estate (to the south-west of Stockwell) often separate offices from warehouse space with fire-resisting walls, and new services through them need the specified seal. On a hospital site such as Lambeth Hospital, which lies south-west of Stockwell, fire-rated sealant goes in where the specification calls for it, with the work planned around the estates team’s permits. For a site team at a college like William Booth College, 1.4 miles east of Stockwell, fire-rated sealing is best scheduled after the summer works.
Stockwell is about 2 miles south-west of London, in Greater London. Our applicators travel to Stockwell for work on service penetrations. 764 places across Greater London fall within our area, including Stockwell.
Commercial sites across SW9, SW4 and SW8 are covered. Buildings on Kay Road, West Road and Cato Road are within our area for service penetrations. Stockwell sits on or close to the A203 and A2217. Nearby places we also cover include Little Portugal (1 mile north), Angell Town (1 mile east), North Brixton (1 mile north-east), South Lambeth (1 mile north) and Clapham (1 mile west). Nearby towns on our patch include City of Westminster (3 miles north-west), Marylebone (4 miles north), Kensington (4 miles north-west), St Pancras (4 miles north), Shoreditch (4 miles north-east) and Walthamstow (9 miles north-east).
Around Stockwell
Around Stockwell, our work takes us to commercial buildings near Max Roach Park, Lansdowne School and The Marquess Of Lorne Public House and the streets around them. The closest station to Stockwell is Brixton station, roughly 0.5 miles south-east. Other landmarks nearby include Gabriel's Wharf (2.8 miles north) and Baynard's Castle (3.1 miles north). Not far away are Knight's Hill and Centre for Wildlife Gardening.
Nearby places to Stockwell
Other services in Stockwell
Different surfaces, different methods
Plastic pipes
Plastic waste pipes through slabs come up often. Whether sealant alone is acceptable depends entirely on the tested detail, and we’ll never swap a specified collar for sealant.
Drylining partitions
Holes in board are often cut larger than needed. If the gap exceeds the tested range, sealant alone won’t do.
Maintenance after handover
Keep the joints in good shape with a few simple steps:
- Keep product data and details in the fire safety file
- Make fire stopping part of every scope that crosses a fire-resisting wall
- Keep general-purpose fillers away from compartment walls
- Report damaged or disturbed seals as soon as they’re spotted
After every round of M&E works, check that the openings created have been sealed. Building it into each contractor’s sign-off keeps the walls intact.
Write fire stopping into the scope of any work crossing a compartment wall or floor. That way the opening is sealed while the trade and access are still there instead of being left for someone else.
When something else is needed
Being straight saves everyone time. Fresh joints won’t solve:
- Reviewing a building’s overall fire safety
- Large openings beyond what any sealant detail covers
- Walls or floors that aren’t fire-resisting to begin with
If in doubt, phone 01277 525 020 or email us and we’ll say what we think before you book.
Joints and surfaces we work on
- Pipe penetrations
- Service gaps in risers
- Cable penetrations
- Joints between fire-resisting walls and floors
- Small duct penetrations where the tested detail allows
- Linear gaps at wall heads