Fire stopping in London
Fire-rated and intumescent sealing of service penetrations and linear gaps across London, by CSCS-carded applicators. Fully insured and CHAS accredited.
- Old intumescent sealant that has split away
- Expanding foam used as fire stopping
- Seals that don’t match their tested detail
Fire stopping for London sites
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Why act early in London
Open service penetrations matter on ordinary days, not just in a fire: they also carry noise, draughts and smells between rooms. Sealing them to the specified detail deals with the fire risk first. On a busy site in a large place like London, a failed joint gets worse with every day of use. Catching it early keeps the fix simple.
No two sites price the same: joint size, product, access and site hours all play a part. Send the details and a fixed figure follows.
Why clients in London choose us
- Joints cleaned back to sound surfaces
- Specification-led, product-correct work
- A Constructionline member, so easy to vet
- Clear, fixed quotes
Take a look at what affects the cost and our accreditations.
How we handle fire stopping in London
A fire-rated sealant is only one part of a tested system: its test evidence covers one product in one kind of wall or floor, with set services, gaps, depths and backing. We match each opening to that detail before any sealant goes in, and raise it with you if it falls outside. If you have head-of-wall gaps with no fire seal and old intumescent sealant that has split away, we can help, on linear gaps at wall heads, small duct penetrations where the tested detail allows and pipe penetrations alike. One point of contact handles commercial sealant work in London from the first photos to the final walk-round, whether it’s one building or several.
Places the size of London normally have healthcare, education and commercial buildings divided into fire compartments. Every pipe, cable or duct through those walls and floors needs a seal that matches its tested detail.
Every job we finish is backed by a 12-month workmanship guarantee. If a joint we sealed fails because of how it was installed, we come back and put it right.
- Location
- London (CR0, E14, CR4, SW11)
- Region
- Greater London
- Guarantee
- 12 months on every job
- Quotes
- Quoted before any work starts
- Call
- 01277 525 020
- Page updated
- 3 November 2026
Nearby places to London
Other services in London
Diagnose, treat, sign off
Tell us your site hours and access windows and we’ll plan around them. On the day, the work area is kept contained and tidy, and we check in with your contact before moving on to each new area. For premises in central London, deliveries and parking need a bit of planning, whereas edge-of-town units normally have yard space. Let us know what’s there when you send details.
- We read the specification, drawings or penetration schedule you send.
- Every penetration is compared with its detail: wall or floor type, service, gap size and depth.
- Anything that doesn’t belong in the opening, such as expanding foam or general-purpose filler, is removed.
- Mineral wool or other backing goes in wherever the detail asks.
- We apply the specified sealant to the depth and around the services as the detail shows.
- Openings that need a collar, wrap, batt or other product are flagged to you rather than filled with sealant.
Preparing the site
- Share your working hours and any access restrictions
- Tell us which areas need to stay in use
- Move anything stored against the joints
Ask for a quote
Photos, drawings or a schedule of the joints and a fixed quote comes back to you. Where a site visit makes more sense, we’ll arrange one.
Read more
Questions about London
How does the removal of BS 476 from Approved Document B affect fire-rated sealing in London?
Approved Document B loses its BS 476 references from 2 September 2029, and BS EN 13501-2 becomes 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 in a care home near London with residents in?
Yes, with the manager deciding the order and timing of rooms. Any site rules, from signing in to infection control, are agreed before we start.
Can you quote from photos?
It depends on the job. Straightforward work can often be priced from photographs and measurements, and bigger or more complex jobs usually get a visit.
Will you quote for a small job?
Single areas, one-off repairs and whole buildings are all quoted the same way: details, then a fixed price, then sealing, then a 12-month guarantee.
How much does the work cost?
There isn’t a price list, as every site differs. With photographs or drawings, we can give you a fixed quote.
Do you work to architects’ specifications?
Yes. We follow the specification, along with the manufacturer’s installation guidance.
Do you cover London?
Yes. We take on work across London, with one number for every area we cover.
Cost factors for service penetrations
Sealant work doesn’t have a standard rate, since sites vary so much. What we take into account:
- Location, for remote and island sites
- The product specified
- The site’s rules and procedures
- Backing rod, priming and other preparation
There’s no price list, because the scope varies so much from one building to the next. Call for a quote.
Sending details for a quote
It doesn’t need to be a full survey. These details are enough to start:
- Clear photos of the problem areas
- Access details, including height
- Approximate linear metres or a joint schedule
- What the building is and how it’s used
A good quote starts with a clear picture: the joints involved, quantities, access and the product called for. Share whatever details you have and we’ll fill any gaps with a visit.
What sealant work can’t fix
Before quoting, we check that sealant is the right answer. It isn’t the answer for:
- Designing or specifying fire stopping, which sits with the designer or fire engineer
- Reviewing a building’s overall fire safety
- Approving the work on behalf of building control
If in doubt, speak to us on 01277 525 020 or email the details over and we will say what we think.
Surfaces we seal
- Small duct penetrations where the tested detail allows
- Joints between fire-resisting walls and floors
- Service gaps in risers
- Cable penetrations
- Pipe penetrations
- Linear gaps at wall heads
Fire stopping around London: how the place shapes the job
There are two care or nursing homes within about 2 miles of London. Where new services have gone through compartment walls in a care setting, the gaps need the specified product. Fire stopping of openings and penetrations in England falls under Approved Document B. References to the older BS 476 classes are being removed from it from 2 September 2029, after which the European classification, BS EN 13501-2, is the route, subject to transitional arrangements. What we install is set by the specification, and it goes in to the tested detail.
Residences at universities like London South Bank University, less than half a mile west of London, have compartment walls that must be resealed whenever services change. For a unit at a centre such as Southernwood Retail Park, 1.1 miles to the south-east of London, penetration seals are worth checking after each shop fit. For a building at a site such as Southwark Bridge Business Centre, less than half a mile north of London, a check of penetration seals after each fit-out is good practice.
London is in Greater London. London sits inside our coverage, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Our Greater London coverage takes in 764 places, from busy centres to rural villages.
Anyone looking for fire stopping in CR0, E14, CR4 and SW11 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. Streets here include Walcot Square, Surrey Square and Sutherland Square, and sites on any of them can send details for a fixed quote. Being close to the A2 and A10, London is easy to get to with materials and equipment. Nearby places we also cover include Walworth (1 mile south), Bermondsey (1 mile east), Camberwell (2 miles south), South Bermondsey (2 miles south-east) and Surrey Canal (2 miles south-east) for service penetrations. Bigger towns within reach include City of Westminster (3 miles west), Marylebone (3 miles north-west), Kensington (5 miles west), Walthamstow (7 miles north-east), Hampstead (5 miles north-west) and Ruislip (14 miles west). London is one of the busier places in Greater London, and we take on service penetrations for its commercial and public buildings.
Around London
Locally, jobs take us to sites close to Newington Gardens, Trinity Arms Public House and London School of Musical Theatre. You’ll also find St Mary-at-Hill (0.9 miles north-east), Ark Globe Academy (less than half a mile south) and The BFI Reuben Library (1 mile north-west). London has its own railway station: Elephant & Castle station. Nearby you will also find Surrey Dispensary (less than half a mile south-east) and Baynard's Castle (0.9 miles north). The countryside around London includes Bellenden Road Nature Garden and St. James's Park Lake.
Doing it in-house
Paperwork matters too. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and our CSCS-carded applicators are used to working under those rules.
Some joints are best left to specialists: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. Getting these wrong normally costs more in the end than doing them right.
For managing agents and facilities managers
For main contractors, we work as the sealant subcontractor, on new build and refurbishment alike. We work to your programme, your specification and your site rules, and our applicators hold CSCS cards.
Building owners and managing agents use us on everything from one building to a spread of sites. Several sites can go on one quote, so there’s one set of paperwork to deal with.