Fire-rated sealing and fire stopping in North Cray, Greater London
Sealant work in North Cray for main contractors, managing agents and facilities managers: fire-rated and intumescent sealing of service penetrations and linear gaps, quoted at a fixed price.
- 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
Fire stopping for North Cray sites
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Our process
In a busy building, we agree a sequence with your contact so the disruption stays in one area at once. Each section is protected, cleaned back and sealed before the next one starts. Planning a London job such as one in North Cray starts with access. Give us the hours we can be on site and we will schedule to suit.
- The specification and schedule come first, so we know which details apply.
- We plan the sequence of floors, risers and voids with you.
- Each opening is checked for wall or floor type, service, gap and depth.
- Unsuitable material is removed and the opening cleaned.
- Backing and fire-rated sealant are installed to the detail and tooled.
- Anything outside the detail is reported to you rather than sealed.
Getting the site ready
- Warn occupants and staff about the work
- Tell us what induction or permit system the site runs
- Make sure the joints can be reached
Ask for a quote
Tell us about the building, the joints and when you need the work done, and we will put a fixed quote together. The easiest way is to give us a call on 01277 525 020 or send photos by email.
Related advice
Fire stopping for commercial buildings in North Cray
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 have fire sealant pulled out of the opening and open linear gaps along the top of fire-resisting walls, we can help, on joints between fire-resisting walls and floors, pipe penetrations and cable penetrations alike. One point of contact handles commercial sealant work in North Cray from the first photos to the final walk-round, for single jobs and planned programmes alike.
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.
Every job we finish is backed by a 12-month workmanship guarantee, in North Cray as everywhere else we work. If a joint we sealed fails because of how it was installed, we come back and put it right.
- Place
- North Cray (DA14)
- Region
- Greater London
- Cover
- A 12-month guarantee
- Quote
- A fixed quote before we start
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
Your questions answered
Do you take on work at healthcare sites like Queen Mary's Hospital?
Yes. Healthcare sites are among the places we work. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.
Do you work in occupied care homes around North Cray?
Yes. Care settings are planned area by area, at times agreed with the home. Noise and disruption are kept to a minimum.
Will you come and look before quoting?
It depends on the job. Straightforward work can often be priced from photographs and measurements, and bigger or more complex jobs typically get a visit.
Who decides which product is used?
The specification comes first, if there is one. Without one, the joint decides: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.
When can the area be used after sealing?
The product and site conditions decide that. Some products skin over quickly but need longer to cure fully, so we will confirm the curing time on the day.
How do I request a quote?
It works in four steps: send details, receive a fixed quote, we carry out the work, and it’s guaranteed. Step one needs little more than photos and a postcode.
Are you insured?
Yes. Our insurance certificate can be sent alongside the quote.
Why act early in North Cray
Leave a penetration open and smoke and fire can cross into the next compartment far earlier than intended. Putting it right is usually a modest job when the openings are accessible. Left until ceilings are closed or a tenant moves in, the same work costs more access and more disruption. Getting scaffold, permits or access booked in North Cray takes effort, so it makes sense to deal with every failing joint while access is in place.
Pricing service penetrations depends on quantities, condition and access, plus any specification you are working to. Call for a quote.
Why appoint us
- Fixed quotes based on photos, drawings or a visit
- Old sealant cut out, never sealed over
- Products installed to the manufacturer’s instructions
- Fully insured
See how commercial sealant jobs are priced or our accreditations.
Should maintenance staff do it?
Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
Putting right a botched joint often costs more than sealing it well at the start, since all of it has to come out and the faces be cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.
Compartment walls and floors in North Cray
For England, the fire stopping of penetrations is dealt with in Approved Document B. 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. Every new tenant in a London building tends to bring new cabling, and with it new holes through compartment walls. Where fire-rated sealant is specified, we install it to the tested detail under the building’s permit-to-work arrangements.
On a site such as Old Bexley Business Park, 0.9 miles north-east of North Cray, every fit-out that runs new services through a compartment wall leaves penetrations to seal with the specified product. In a retail centre such as Broadway Shopping Centre, 1.7 miles north of North Cray, any fire-resisting wall between units that is crossed by new services needs sealing to the tested detail.
North Cray is about 2 miles east of Sidcup, in Greater London. Businesses, contractors and managing agents in North Cray use us for work on service penetrations, as part of our coverage of Greater London. North Cray is one of 764 places we cover in Greater London for service penetrations. We also cover London, some 11 miles away.
Commercial sites across DA14 are covered for service penetrations. If your site is on Water Lane, North Cray Road and Leafield Lane or close by, we can quote for service penetrations. We also cover Bexley (1 mile north), Coldblow (1 mile north-east), Ruxley (1 mile south), Blendon (1 mile north-west) and Joyden's Wood (1 mile east). Nearby towns on our patch include London (11 miles north-west), City of Westminster (14 miles north-west), Marylebone (14 miles north-west), Kensington (15 miles west), St Pancras (13 miles north-west) and Shoreditch (11 miles north-west).
What’s near North Cray
We work on buildings around Foots Cray Meadows, Cleeve Park School and The White Cross pub and the streets around them. North Cray’s nearest station is Albany Park station, roughly 0.6 miles north-west. Nearby you’ll also find Broadway Shopping Centre (1.7 miles north) and Bexley Hospital (1.8 miles north). For a walk, there’s Wansunt Pit and Summer Hill.
When it isn’t the sealant
Sealant solves a lot, but not everything, and we’d rather tell you before you spend money. These need a different solution:
- Walls or floors that aren’t fire-resisting to begin with
- Fire risk assessments, a job for a competent assessor
- Large openings beyond what any sealant detail covers
Not sure which it is? You can give us a call on 01277 525 020 or email the details over and we’ll tell you honestly.
Joints and surfaces we work on
- Cable penetrations
- Linear gaps at wall heads
- Service gaps in risers
- Pipe penetrations
- Joints between fire-resisting walls and floors
- Small duct penetrations where the tested detail allows
Towns and villages near North Cray
Also in North Cray
Different surfaces, different methods
Drylining partitions
Service holes through plasterboard are frequently oversized or ragged. An oversized hole may be outside the sealant’s range.
Linear joints
Head-of-wall joints often have to absorb slab deflection. We use the product and backing the detail names for that movement.
What we are called out for in North Cray
Head-of-wall joints and wall-to-wall junctions are frequent weak points. Deflection and building movement can open these gaps. The tested detail for a linear joint states the width and movement it covers.
Look out for the following:
- Openings left by services added after handover
- Fire-stopping items raised at inspection or handover
- Damaged fire seals in risers and voids
- Head-of-wall gaps with no fire seal
At a college such as Bird College, 1.4 miles to the west of North Cray, checking penetration seals after summer M&E works is good practice.
Comparing quotes
- Will RAMS and insurance details be available?
- How long is the guarantee, and what does it include?
- Is the sealant right for the movement and the substrate?
- Can the work be phased to keep areas open?