Fire-rated sealing and fire stopping in Nash, Greater London
Fire-rated and intumescent sealing of service penetrations and linear gaps across Nash, carried out by CSCS-carded applicators. CHAS accredited and fully insured.
- Service penetrations left open after M&E works
- Unsealed joints where partitions meet the slab
- Hidden openings found during inspections
Fire stopping for businesses in Nash
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Diagnose, treat, sign off
Before we leave any area, the masking comes off, the area is cleaned and every joint is checked. If an area should be left alone while the sealant cures, we say how long and put signs out. In Nash, 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.
- We start with your penetration schedule, drawings or specification.
- Access, permits and the order of areas are agreed with the site team.
- Each opening is checked for wall or floor type, service, gap and depth.
- Unsuitable material is removed and the opening cleaned first.
- The specified backing and sealant go in to depth and are finished neatly.
- Anything outside the detail is reported to you rather than sealed.
What we need from you
- Point out parking and an unloading spot
- Tell us which areas need to stay in use
- For older buildings, check the asbestos register before work
Get a fixed quote
The quickest route to a quote is a few photographs and the site postcode. Upload them with the quote form, or give us a call on 01277 525 020 or email us to discuss it first.
Advice
Fire stopping in Nash, done properly
Every service that crosses a compartment wall or floor leaves an opening, and that opening needs sealing to hold back fire and smoke. Our job is fitting fire-rated and intumescent sealant at those service penetrations, and along linear gaps, where it is the specified product. Each seal follows the manufacturer’s tested detail. We work on pipe penetrations, cable penetrations and service gaps in risers, and what we’re called in for most is improvised or mixed-product fire seals and hidden openings found during inspections. Most enquiries from Nash start with one failed joint and grow into a wider look at the building: we look at the rest while we’re there and tell you what we find.
After a fit-out or new cabling in a London building, risers and ceiling voids are where open service gaps tend to be found. Fire-rated sealant goes in where it’s the specified item; where a collar, wrap or batt is called for instead, we flag it.
We stand by our work: 12 months, guaranteed. That covers our preparation and application, and we come back if anything isn’t right.
- Where
- Nash (BR2)
- Region
- Greater London
- Guarantee
- 12 months on every job
- Price
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Page updated
- 3 November 2026
Signs you need fire stopping in Nash
When a seal departs from its tested detail, the evidence no longer covers it. An oversized gap, too shallow a bead, missing backing or two makers’ products combined are the usual culprits.
Any of the following is a good reason to get the joints checked over:
- Expanding foam used as fire stopping
- Unsealed openings around new pipes and cables
- Damaged fire seals in risers and voids
- Improvised or mixed-product fire seals
For a school such as Wickham Common Primary School, penetration sealing fits best at the end of the summer works.
Questions to ask before you book
- Which product they’ll use, and why it suits the joint
- Their plan for phasing and protecting the area
- Whether primer will be used where the manufacturer specifies it
- Whether their applicators hold CSCS cards
Nearby places to Nash
Also in Nash
Where services cross fire walls in Nash
The 2 miles around Nash include two care or nursing homes. In a care home, any new pipe or cable through a fire-resisting wall should be sealed to the specified detail. In England, Approved Document B covers fire stopping of 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. Our part stays the same: the specified product, installed to its tested detail.
For a building such as Keston Parish Church, new heating or data runs are the usual reason penetrations need sealing. For a site team at a college like Shaftesbury Nash College, 1.2 miles to the north of Nash, fire-rated sealing is best scheduled after the summer works.
Nash is about 3 miles south of Bromley, in Greater London. Across the BR2 postcode area, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. We work across 764 places in Greater London. For work in that direction, see our London page (11 miles or so).
Business premises anywhere in BR2 are within our area. Streets here include Nash Lane and North Pole Lane, and sites on any of them can send details for a fixed quote. If your building is just outside Nash, we cover Keston (1 mile east), Leaves Green (1 mile south-east), Hayes (1 mile north), New Addington (2 miles south-west) and Farthing Street (2 miles south-east). Further afield, our area takes in London (11 miles north-west), City of Westminster (13 miles north-west), Marylebone (13 miles north-west), Kensington (14 miles north-west), St Pancras (13 miles north-west) and Shoreditch (12 miles north).
Near you in Nash
Recent enquiries here include premises near The Greyhound pub, All Saints Catholic School and Coney Hall Recreation Ground, among other places. Nash’s nearest station is Hayes (Kent) station, roughly 1.4 miles north of the centre. Nearby you’ll also find The Mall (3.2 miles north) and Bethlem Museum of the Mind (1.8 miles north). For a walk, there’s Hutchinson's Bank and Summer Hill.
Questions we are asked in Nash
Will you work in a care home in Nash without moving residents out?
Yes. We work around residents’ routines, a room or two at a time. Any site rules, from signing in to infection control, are agreed before we start.
Is hospital work, at somewhere like Princess Royal University Hospital, something you do?
Yes. Healthcare sites are among the places we work. We follow the site’s permits, sign-in and infection-control procedures in every area.
When is resealing likely to be due?
It depends on movement, UV and weather, cleaning, traffic and the product. Treat them as maintenance items and inspect them regularly.
Do you work in Scotland as well as England?
Our area runs from Greater London and the South East to every part of Scotland. In Scotland, clause 2.1.14 of the non-domestic Technical Handbook says service penetrations should keep at least the fire resistance of the wall or floor, with proprietary products tested for the end use.
Do you have third-party installer accreditation for fire stopping?
No. We are not members of a third-party fire-stopping installer scheme. Our credentials are CHAS accreditation, Constructionline membership and CSCS-carded applicators, and we are fully insured. Where a client or main contractor requires a scheme member, we will say so right away rather than waste your time.
What if there’s asbestos in the old mastic?
Managing asbestos is the dutyholder’s responsibility, so we’ll ask for the register before work on an older building. If anything suspect turns up, we stop until it’s tested.
Can you handle several sites?
Yes. Multi-site work and planned programmes are a core part of the service, planned site by site to suit how each building is used.
Looking after the joints
Cleaning and maintenance staff play a part too. Share these points with them:
- Foam or ordinary sealant is never a fire-seal repair
- Have penetrations checked while they can still be seen
- Put resealing into every M&E and fit-out package
- Look above ceilings when tiles are lifted for other jobs
Add risers, plant rooms and ceiling voids to routine fire-stopping checks. Look for cracks, unsealed new cables and gaps that have been enlarged.
The simplest way to keep compartment walls intact is to plan fire stopping into every job that crosses them. Then the seal goes in while the area is open.
Work for main contractors and building owners
CHAS accredited and a Constructionline member, we’re straightforward to vet for your supplier list. We’re fully insured, and our insurance certificate can go with the quote.
We work for building owners and managing agents on sealant work across single buildings or whole portfolios around Nash. One quote can cover more than one site, which keeps the paperwork simple.
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. If the detail needs something beyond sealant, we tell you.
Drylining partitions
Holes in board are often cut larger than needed. An oversized hole may be outside the sealant’s range, and the detail may call for board patching or another product.
Why it’s worth doing now in Nash
Open service penetrations matter on ordinary days, not just in a fire: smoke, noise and draughts pass through them every day. The specified fire seal closes the gap for all of these, and the other benefits follow. In Nash, each extra visit means more notices, permits and disruption, so a proper job first time, with the old sealant fully removed, is worth it.
Quantities, awkward access and phased working all shape the price. So do site requirements such as inductions and permits, along with the time of year for external work.
Why us?
- CHAS accredited
- Old sealant cut out, never sealed over
- Constructionline member for supplier checks
- One phone line for London, the South East and Scotland
Take a look at our cost guide or our accreditations and insurance.