Fire stopping in Sidcup
Fire-rated and intumescent sealing of service penetrations and linear gaps in Sidcup and across Greater London. CHAS accredited and fully insured, with a 12-month guarantee.
- Fire seals cut back for extra cables and never reinstated
- Improvised or mixed-product fire seals
- Old intumescent sealant that has split away
Fire stopping for Sidcup sites
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
How we handle fire stopping in Sidcup
The test standards are BS EN 1366-3 for penetration seals and BS EN 1366-4 for linear joints. A rating such as EI 60 only holds when the product is installed as it was tested. Reproducing the tested arrangement on site is the part we take care of. We work on service gaps in risers, cable penetrations and small duct penetrations where the tested detail allows, and the failures we’re asked to look at most are service penetrations left open after M&E works and unsealed penetrations discovered above suspended ceilings. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in Sidcup, preparation and product choice get the time they need.
Fit-outs and M&E works in London buildings often leave service penetrations open behind ceilings and in risers. 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.
Every job ends the same way: guaranteed. Our workmanship is backed for 12 months, and the quote explains what it covers.
- Location
- Sidcup (DA14, DA15, SE9, DA5)
- Region
- Greater London
- Guarantee
- 12 months on every job
- Quotes
- A fixed quote before we start
- Telephone
- 01277 525 020
- Updated
- 3 November 2026
Signs you need fire stopping in Sidcup
On a busy project, programme pressure can mean fire stopping is rushed or left to whichever trade is closest. That is when untested combinations creep in and later need putting right.
Typical triggers for a call:
- Penetration schedules that need working through
- Seals disturbed by maintenance and left open
- Openings found when ceilings come down for a refit
- Unsealed joints where partitions meet the slab
At a university such as University of Greenwich Avery Hill Campus, 1.4 miles to the north-west of Sidcup, labs, lecture blocks and residences are re-serviced often, so penetration seals are best checked after M&E work.
Before you book anyone
- The named product and why it was chosen
- Are they CHAS accredited or on Constructionline?
- What level of public liability insurance do they hold?
- Will failed sealant be removed rather than covered?
Towns and villages near Sidcup
What else we do in Sidcup
Sidcup: questions and answers
Will you plan work around the academic year at somewhere like University of Greenwich Avery Hill Campus?
Yes. Education sites usually want the work in vacations or in phases during term, and we plan to suit. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.
Would you work within a site like Queen Mary's Hospital?
Yes, hospitals are one of the sectors we cover. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.
What do BS EN 1366-3 and BS EN 13501-2 mean?
In short, BS EN 1366-3 and 1366-4 are the fire tests and BS EN 13501-2 is how results are classified. EI 60 means integrity and insulation for 60 minutes in the tested arrangement; installing to the detail is what carries that across to site.
What will the job cost?
Each job is quoted on its own details. To get one, give us a call on 01277 525 020 or email the details over with a description of the work.
Is colour matching possible?
In many cases, yes. Sealants are made in a wide range of standard colours, and matching to RAL references or nearby finishes is commonly requested. We confirm what’s available for the specified product when we quote.
Do you work in Sidcup?
Yes. We cover Sidcup, and you can phone 01277 525 020 or send details through our quote form to get started.
Is it fine to apply new sealant on top of old?
No. Failed sealant is removed and the faces cleaned back to sound, dry material first, because fresh silicone will not bond with aged silicone.
Why deal with it now?
Open service penetrations matter on ordinary days, not just in a fire: they also carry noise, draughts and smells between rooms. The specified fire seal closes the gap for all of these and the building feels the difference. Getting scaffold, permits or access booked in Sidcup takes effort, so it makes sense to deal with every failing joint while access is in place.
Access often affects the price as much as the sealing: joints within easy reach take less time than ones that need access equipment. Tell us how the joints are reached and call for a quote.
Why clients in Sidcup choose us
- CSCS-carded applicators
- Products installed to the manufacturer’s instructions
- Constructionline member
- Over 20 years of commercial sealing
See how commercial sealant jobs are priced and our accreditations.
On site: what to expect
Site rules come first: signing in, inductions and any permit to work. Once we’re cleared to begin, we take the joints in the sequence agreed with you, and each area is checked before we leave it. Most London premises stay occupied while we’re on site, so zones and timings are agreed with whoever manages the building. Phased work keeps the rest of the building in use.
- We ask for the product and detail your designer has specified.
- We sort the openings by the detail each one needs.
- Old or wrong materials are cut out.
- Mineral wool or other backing is fitted where required.
- We gun the sealant in to the specified depth around each service and tool it.
- We walk the completed areas with you and confirm the records agreed at quote stage.
Before we start on site
- Tell us which areas need to stay in use
- Move anything stored against the joints
- Have the specification and drawings to hand
Quotes
Let us know the site, the scope and your timescale, and a fixed quote will follow. To get it moving, speak to us on 01277 525 020 or email the details over.
Related advice
General trades versus a specialist
Putting right a botched joint often costs more than sealing it well at the start, because the whole bead must be removed and the faces cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.
Site maintenance staff can often handle a short internal joint. The usual problems come from preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
Fire stopping in Sidcup: the local picture
Sidcup has 15 care or nursing homes no more than 2 miles away. Care settings depend on compartmentation, so service penetrations made during maintenance or refurbishment need sealing with the specified product. Approved Document B is the English guidance that covers fire stopping around openings and penetrations. 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. We install whatever has been specified, to the product’s tested detail.
Tenant changes at parks like Green Lane Business Park (1.8 miles west of Sidcup) bring new data and services, and openings through fire-resisting walls need the specified seal. On a hospital site such as Queen Mary's Hospital, which lies south of Sidcup, fire-rated sealant goes in where the specification calls for it, with the work planned around the estates team’s permits.
Sidcup is about 3 miles north of Orpington, in Greater London. We cover Sidcup and the rest of Greater London, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. We work across 764 places in Greater London, large and small. Sites around London have their own page, roughly 10 miles from Sidcup.
If you need fire stopping in DA14, DA15, SE9 and DA5, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. Buildings on Station Road, High Street and Jubilee Way are within our area for service penetrations. With the A211 and A2001 nearby, Sidcup is easy to get to with materials and equipment. Nearby places we also cover include Albany Park (1 mile south), Blendon (1 mile north-east), Foots Cray (1 mile south-east), Bexley (2 miles north-east) and North Cray (2 miles east). Nearby towns on our patch include London (10 miles north-west), City of Westminster (12 miles north-west), Marylebone (12 miles north-west), Kensington (14 miles west), St Pancras (11 miles north-west) and Shoreditch (10 miles north-west).
Near you in Sidcup
In Sidcup, that means premises near The Alma pub, Waring Park and Chislehurst and Sidcup Grammar School. There’s a railway station in Sidcup itself: Sidcup station. A little further out are Queen Mary's Hospital (1 mile south) and Broadway Shopping Centre (2.4 miles north-east). The countryside around Sidcup includes Summer Hill and The Tarn.
What the job involves on each surface
Metal pipes
Heat travels along metal pipework, and some details add wrapping or a set length of insulation. We follow whatever the detail requires and flag anything we can’t match.
Masonry and concrete
Block walls and concrete floors are common substrates for penetration seals. Dust and debris are cleared from the opening.
After the work
Problems stay small when the joints are checked regularly. In particular:
- Look above ceilings when tiles are lifted for other jobs
- Flag new cables with no seal around them
- Check with the data sheet before painting over fire sealant
- Ask the designer to confirm details early on refits
Never top up a fire seal with foam, ordinary silicone or filler. A repair should use the original product, installed the same way.
A simple record of seal locations and products helps. When a new service goes through, everyone knows which product and detail to match.