Fire stopping in Barnes Cray
Fire-rated and intumescent sealing of service penetrations and linear gaps in Barnes Cray and across Greater London. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Fire seals cut back for extra cables and never reinstated
- Penetration schedules that need working through
- Seals that don’t match their tested detail
Fire stopping across Barnes Cray
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Fire stopping for commercial buildings in Barnes Cray
We are commercial sealant applicators, CHAS accredited and a Constructionline member, with CSCS-carded applicators on site. We hold no third-party fire-stopping installer certificate. What we offer is careful installation of the specified sealant to its tested detail, with a 12-month guarantee on our workmanship. We work on service gaps in risers, pipe penetrations and cable penetrations, and the usual reasons a site gets in touch are service penetrations left open after M&E works and fire-stopping items raised at inspection or handover. One point of contact handles commercial sealant work in Barnes Cray from the first photographs to the final walk-round, whether it’s one building or several.
In a London area such as Barnes Cray, buildings are refitted often, and every new cable, pipe or duct through a fire-resisting wall or floor leaves a gap. Where the specification names fire-rated sealant, it goes in exactly as the manufacturer’s test evidence shows for that wall or floor.
Whoever the client is, the cover is the same: twelve months on the work we carried out. Faults in the structure, damage and other trades’ work fall outside it, and we say so plainly.
- Location
- Barnes Cray (DA1, DA8)
- Wider area
- Greater London
- Cover
- 12 months on every job
- Price
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Last updated
- 3 November 2026
Honest limits
Our job is the joint, not everything around it. Sealant alone won’t deal with:
- Designing or specifying fire stopping, which sits with the designer or fire engineer
- Construction that lacks the fire resistance the seal relies on
- Approving the work on behalf of building control
Not sure which it is? You can call 01277 525 020 or email us and we will tell you honestly.
Where we work in Barnes Cray
- Linear gaps at wall heads
- Service gaps in risers
- Small duct penetrations where the tested detail allows
- Joints between fire-resisting walls and floors
- Pipe penetrations
- Cable penetrations
Building owners, agents and FMs in Barnes Cray
Hotels, schools, healthcare sites, offices and retail units book us directly too. The work is planned around how the building runs, so guests, pupils, patients or staff are disturbed as little as possible.
Facilities managers want contractors who arrive with the paperwork sorted. Tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we’ll confirm with the quote.
Why act early in Barnes Cray
An open or wrongly sealed service penetration lets fire and smoke reach the next compartment much sooner than the building was designed for. Putting it right is typically a modest job when the openings are accessible. Wait until ceilings close or areas are occupied and the same work becomes harder to reach. Access in London is hard enough to arrange once, 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, and any specification that applies. Ask us for a fixed quote.
What you get with us
- A Constructionline member, so easy to vet
- One number for every site we cover
- Public liability insurance in place
- Joints cleaned back to sound surfaces
Read our cost guide and our accreditations.
Should maintenance staff do it?
Certain joints really need a specialist: for example fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. Getting these wrong usually costs more in the end than doing them right.
Using site staff can make sense for a small touch-up, but anything bigger is another matter: a specialist brings efficiency, a consistent finish and a 12-month guarantee.
Towns and villages near Barnes Cray
What else we do in Barnes Cray
Common questions from Barnes Cray clients
Do you work in London buildings with loading restrictions?
Yes. Inductions, permits and timed loading are routine for us in London. The building manager’s rules go straight into our method. All of Greater London is inside the ULEZ, and our planning allows for it
Does your area include sites such as Swan Industrial Park, near Barnes Cray?
Yes. We cover Barnes Cray and the area around it, including industrial estates, business parks and retail parks such as Swan Industrial Park. Send details of the unit and the work through our quote form for a quick quote.
Will you just go over the old sealant?
No. We cut the old material out and clean the joint back before sealing, since fresh sealant will not bond reliably to aged material.
Does the weather affect the work?
It can, when the joints are outside. Wet joints and cold, damp or frosty conditions stop the sealant bonding properly, so external work may be moved if conditions aren’t right. Indoors, the weather is rarely a problem.
Do you work to architects’ specifications?
Yes. We follow the specification, along with the manufacturer’s installation guidance, and any queries are raised before we start.
Do you guarantee your work?
Yes. Our workmanship is backed for 12 months on every job.
Do you have public liability insurance?
Yes. Our insurance certificate can be sent alongside the quote.
What the job involves on each surface
Risers and ceiling voids
Voids hide a lot of unsealed openings. We work through the areas on your schedule methodically and tell you about openings outside the list.
Plastic pipes
In a fire, plastic pipework melts away and leaves an opening. Small sizes are sometimes covered by an intumescent sealant detail. We confirm material and size first and tell you if sealant isn’t the right product.
Diagnose, treat, sign off
On arrival, we sign in, go through any site induction and check how permits are handled. Everything around the joints gets protected before anything is cut or cleaned, and the work usually takes anything from one day to a planned run of visits, depending on the number of seals and the access. All of Greater London is in the ULEZ, and kerbside space in Barnes Cray can be scarce. Let us know about any on-site parking or loading arrangements when you send the job details.
- First we go through the drawings, schedule or specification for the seals and ask about anything unclear.
- 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.
- If an opening needs something other than sealant, we tell you instead of improvising.
Before we start on site
- For older buildings, check the asbestos register before work
- Agree which areas must stay open
- Tell us your opening times and when work is allowed
Ask for a quote
If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price against exactly what is specified. Smaller jobs need nothing more than photographs and a few notes.
Read more
Service penetrations in Barnes Cray buildings
Approved Document B is the English guidance that covers fire stopping around openings and penetrations. From 2 September 2029, BS 476 references are being taken out of Approved Document B, leaving BS EN 13501-2 classification as the route, subject to the Government’s transitional arrangements. What we install is set by the specification, and it goes in to the tested detail. Every new tenant in a London building tends to bring new cabling, and with it new holes through compartment walls. We install fire-rated sealant where it is specified and work within the building manager’s permit system.
On a hospital site such as Erith and District Hospital, 1.8 miles north-west of Barnes Cray, fire-rated sealant goes in where the specification calls for it, with the work planned around the estates team’s permits. Where a unit on an estate such as Swan Industrial Park, which lies east of Barnes Cray, has fire-resisting walls between offices and warehouse, any new service through them should be sealed to the tested detail. At a college such as North Kent College, 1.7 miles south of Barnes Cray, checking penetration seals after summer M&E works is good practice.
Barnes Cray is about 2 miles north-west of Dartford, in Greater London. Looking for fire stopping in Barnes Cray? We can help. 764 places across Greater London fall within our area, including Barnes Cray. There’s a separate page for London, roughly 13 miles from Barnes Cray.
We take on service penetrations across the DA1 and DA8 postcode area, whatever the building. For a building on Stour Road, Wilmot Road and Maiden Lane or nearby, we can quote for service penetrations. Nearby places we also cover include Slade Green (1 mile north), North End (1 mile north), Crayford (1 mile south-west), Barnehurst (1 mile west) and Bexley Riverside (1 mile north-west) for service penetrations. Bigger towns within reach include London (13 miles west), Marylebone (15 miles west), St Pancras (14 miles west), Shoreditch (13 miles west), Walthamstow (13 miles north-west) and Hoxton (13 miles north-west).
Near you in Barnes Cray
Around Barnes Cray, our work takes us to commercial buildings near Bird in Hand pub, Holy Trinity Church of England Primary School and Braeburn Park. For rail, the closest station is Slade Green station, roughly 0.7 miles north. Nearby you’ll also find Stone Castle (3.7 miles east) and West Hill Hospital (1 mile south-east). The countryside around Barnes Cray includes Wansunt Pit.