Fire stopping in St Johns
Fire stopping for St Johns, from a contractor working since 2005. Fully insured and CHAS accredited.
- Penetration schedules that need working through
- Head-of-wall gaps with no fire seal
- Damaged fire seals in risers and voids
Fire stopping near St Johns
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Fire stopping in St Johns
Fire-rated sealant suits many small service penetrations: copper and steel pipes, cables and some small ducts where the tested detail allows. Larger openings and some plastic pipes call for collars, wraps, batts or boards instead. If the detail calls for something other than sealant, we say so rather than force sealant into it. If you are dealing with snag lists that include open service penetrations and non-fire-rated filler around services, we can help. A specialist sealant contractor works differently from a general builder: in St Johns, that means joint design, primers and backing rod as standard.
Taller residential buildings in London may fall under the Building Safety Act’s higher-risk regime, where fire-stopping records get close attention. 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.
Guaranteed is the last step of every job. You get a 12-month guarantee on our workmanship, and the quote explains what it covers.
- Where
- St Johns (SE13, SE10, SE8)
- Region
- Greater London
- Guarantee
- A 12-month guarantee
- Quote
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Page updated
- 3 November 2026
What affects the price in St Johns
Sealant work doesn’t have a standard rate, since sites vary so much. What we look at:
- The site’s rules and procedures
- Access and working height
- Distance, for remote addresses
- Which sealant the job calls for
Access can matter as much as the joints themselves: easy-to-reach joints are quicker than those that need equipment to get to. Mention the access as part of your enquiry.
Details that help us quote
It doesn’t need to be a full survey. These details are enough to start:
- Whether an asbestos survey exists
- Access details, including height
- A wide shot and a close-up of the area
- The postcode of the building
Specifications, drawings and tender packages are welcome with any enquiry, and we’ll price against exactly what is specified. Smaller jobs need nothing more than photographs and a few notes.
Penetration seals near St Johns
In England, Approved Document B covers fire stopping of openings and penetrations. The national BS 476 classes are due to drop out of it from 2 September 2029, leaving the European BS EN 13501-2 route, subject to transitional arrangements. Our part stays the same: the specified product, installed to its tested detail. Four care or nursing homes sit less than 2 miles from St Johns. Where new services have gone through compartment walls in a care setting, the gaps need the specified product. Where that’s fire-rated sealant, we install it to the manufacturer’s tested detail.
Residences at universities like University of Greenwich - Greenwich Campus, 1.1 miles north-east of St Johns, have compartment walls that must be resealed whenever services change. In a retail centre such as Lewisham Shopping Centre, 0.7 miles south-east of St Johns, any fire-resisting wall between units that is crossed by new services needs sealing to the tested detail.
St Johns is about 4 miles south-east of London, in Greater London. Across the SE13 postcode area, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. St Johns is one of 764 places we cover in Greater London.
Postcode districts covered here: SE13, SE10 and SE8. We cover commercial and managed buildings on Avon Road, Mill Lane and Clare Road. With the A2210 and A2211 nearby, St Johns is straightforward for us to reach. Close to St Johns, our area also takes in New Cross (1 mile west), Deptford (1 mile north), Lewisham (1 mile south-east), Telegraph Hill (1 mile west) and Ladywell (1 mile south). A short drive away, we cover London (4 miles north-west), City of Westminster (6 miles north-west), Marylebone (6 miles north-west), Kensington (8 miles west), St Pancras (6 miles north-west) and Shoreditch (5 miles north-west).
What’s near St Johns
Locally, jobs take us to sites close to Wickham Arms, Brookmill Park and Addey and Stanhope School and the streets around them. Also close by are St. Paul's (0.7 miles north) and Laban Centre (0.8 miles north). There’s a railway station in St Johns itself: St Johns station. Nearby you’ll also find Fan Museum (0.9 miles north-east) and Lewisham Shopping Centre (0.7 miles south-east). For a walk, there’s Brookmill Road Local Nature Reserve and Tower Hill.
Other services in St Johns
Do you need fire stopping in St Johns?
Linear gaps fail where a fire-resisting wall meets a slab, soffit or another wall. Deflection and building movement can open these gaps, and a product not tested for that movement may crack. The tested detail for a linear joint states the width and movement it covers.
It’s worth sending us details if you spot any of the following:
- Openings left by services added after handover
- Open linear gaps along the top of fire-resisting walls
- Fire seals cut back for extra cables and never reinstated
- Snag lists that include open service penetrations
Where a unit on an estate such as Brookmarsh Industrial Estate (0.7 miles north of St Johns), has fire-resisting walls between offices and warehouse, any new service through them should be sealed to the tested detail.
What your quote should include
- What site paperwork they can supply
- Their pre-qualification and accreditations
- Can the work be phased to keep areas open?
- Who will actually carry out the work
After the work
Regular inspection catches problems early. In particular:
- Foam or ordinary sealant is never a fire-seal repair
- Check with the data sheet before painting over fire sealant
- Include service cupboards in routine inspections
- Make fire stopping part of every scope that crosses a fire-resisting wall
During planned inspections, look at seals in risers, cupboards and voids. Look for cracks, unsealed new cables and gaps that have been enlarged, and report them promptly.
Regular walk-rounds of service areas are worth the time. A cracked or disturbed seal found early is a small job compared with dozens found at once.
When it isn’t the sealant
Before quoting, we check that sealant is the right answer. It won’t put right:
- Large openings beyond what any sealant detail covers
- Gaps in walls that were never built as compartment walls
- Approving the work on behalf of building control
Not sure which it is? You can phone 01277 525 020 or send details through our quote form and we’ll tell you honestly before you book.
Surfaces we seal
- Joints between fire-resisting walls and floors
- Cable penetrations
- Service gaps in risers
- Linear gaps at wall heads
- Pipe penetrations
- Small duct penetrations where the tested detail allows
Different surfaces, different methods
Small ducts
We seal around ducts only within what the tested detail covers. The ductwork, its supports and any dampers are for the ductwork contractor.
Risers and ceiling voids
Risers and ceiling voids hold most of a building’s service penetrations. Access is often tight, so we agree it with you in advance along with any permits your site needs.
From enquiry to sign-off
We bring the products specified for the job, along with primers and backing rod. Joint faces are cleaned back to sound, dry surfaces, the manufacturer’s primer is applied where it’s called for, and the sealant is tooled off neatly. In St Johns, most buildings stay in use during the work, so we agree zones and timings with the building or facilities manager. Areas are handed back as each section is finished.
- First we confirm the product and tested details named in the specification.
- We sort the openings by the detail each one needs.
- Old or wrong materials are cut out.
- Where the detail needs backing, it goes in at the stated depth.
- Fire-rated or intumescent sealant goes in around the services and is tooled off.
- Completed areas are checked with you, with the records agreed when we quoted.
Getting the site ready
- Arrange parking or a loading space
- Flag any permit to work we will need
- Tell staff and tenants when we’ll be in
Request a quote
A good quote starts with a clear picture: the joints involved, quantities, access and the product called for. Send what you have, and we will arrange a site visit if anything is unclear.
Related advice
FAQs: St Johns
How does the move away from BS 476 affect penetration seals in St Johns?
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.
Do you cover business parks and estates near St Johns, such as Brookmarsh Industrial Estate?
Yes. Estates, retail parks and business parks around St Johns, Brookmarsh Industrial Estate among them, are all within reach. Send details of the unit and the work through our quote form for a quick quote.
Are your applicators CSCS-carded?
Yes. If you need card details for site access, let us know and we’ll send them with the quote.
When can the area be used after sealing?
Curing time varies by product, and we confirm it on the day, and flag anything to keep off until it has cured.
Do you have public liability insurance?
Yes. We are fully insured, including public liability cover.
How long do sealant joints last?
There isn’t a single answer, since movement, weather, cleaning and use all affect it. Regular checks let you plan resealing before leaks or damage.
Do you offer coloured sealant?
In many cases, yes. Many products come in a range of standard colours, and matching to RAL references or surrounding finishes is often possible. We confirm what’s available for the specified product when we quote.