Fire-rated sealing and fire stopping in Gunnersbury, Greater London
Sealant work in Gunnersbury for main contractors, managing agents and facilities managers: fire-rated and intumescent sealing of service penetrations and linear gaps, with a fixed quote first.
- Expanding foam used as fire stopping
- Fire stopping installed outside its tested range
- Snag lists that include open service penetrations
Fire stopping for businesses in Gunnersbury
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
How we handle fire stopping in Gunnersbury
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. The enquiries we see most involve penetration schedules that need working through and unsealed joints where partitions meet the slab, on service gaps in risers, linear gaps at wall heads and pipe penetrations. For commercial sealant work in Gunnersbury, you deal with one contact from quote to sign-off, whether it’s one building or several.
Taller residential buildings in London may fall under the Building Safety Act’s higher-risk regime, where fire-stopping records get close attention. Our part is installing the specified fire-rated sealant; tell us what records you need and we’ll confirm with the quote.
We sign every job off with a 12-month guarantee. It’s a plain promise: if the work we did fails within twelve months, we return to fix it.
- Place
- Gunnersbury (W4, W3, TW8)
- Region
- Greater London
- Cover
- 12 months on our workmanship
- Quote
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
What sets the cost
Sealant work doesn’t have a standard rate, since sites vary so much. What we look at:
- Any access equipment needed
- Working within restricted access windows
- Joint width, depth and condition
- The product specified
What a job costs comes down to how many linear metres there are, how much old material needs removing and the access. Call for a quote once you have the details.
What to include in your enquiry
Diagnosis starts before we arrive. Let us know:
- Access details, including height
- Specification clauses that apply
- Rough lengths or quantities, or drawings if you have them
- Whether an asbestos survey exists
We quote a fixed sum against the scope you give us, so the cost is agreed before work starts. To start the process, phone 01277 525 020 or email a schedule or drawings.
Do you need fire stopping in Gunnersbury?
Physical damage is another reason seals stop doing their job. Maintenance work can knock a seal, cut it back for an extra cable or remove it with an old pipe and the opening isn’t always resealed.
Things that usually lead to an enquiry:
- Snag lists that include open service penetrations
- Service penetrations left open after M&E works
- Hidden openings found during inspections
- Open linear gaps along the top of fire-resisting walls
Hotels like Clayton Hotel (to the south-west of Gunnersbury) are refurbished in phases, and each phase can open up compartment walls.
What to look for in a quote
- How long is the guarantee, and what does it include?
- Health and safety accreditation such as CHAS
- Whether their applicators hold CSCS cards
- Will RAMS and insurance details be available?
Commercial clients in Gunnersbury
Agents, factors and owners’ representatives all follow the same route: send details, get a fixed quote, we seal, guaranteed. Keys, access and contacts can be agreed in advance.
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.
Penetration seals near Gunnersbury
With tenants changing and fit-outs following, London buildings see service routes altered again and again. Penetrations are sealed with the specified product, to its tested detail, under the building’s own permit rules. Approved Document B is the English guidance that covers fire stopping around 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. Either way, we install the specified product to its tested detail.
Colleges such as Ealing and West London College, 1.8 miles to the north-west of Gunnersbury, add IT and services as courses change, and each new penetration through a fire-resisting wall needs sealing with the specified product. For a unit at a site such as Kew Retail Park, 1 mile south of Gunnersbury, any new service through a fire-resisting wall should be sealed to the tested detail.
Gunnersbury is about 1 mile south of Acton, in Greater London. Businesses, contractors and managing agents in Gunnersbury use us for work on service penetrations. Gunnersbury is one of 764 places in Greater London on our list for service penetrations. We also cover London, around 8 miles from Gunnersbury.
We take on service penetrations across the W4, W3 and TW8 postcode area. Buildings on Kew Road, Kent Road and Power Road are within our area. Gunnersbury sits on or close to the A3000, useful when we plan access and materials. Just outside Gunnersbury, we also work in Strand-on-the-Green (1 mile south), Kew (1 mile south), Grove Park (1 mile south-east), Chiswick (1 mile east) and Turnham Green (1 mile south-east). Bigger towns within reach include London (8 miles east), City of Westminster (6 miles east), Marylebone (6 miles east), Kensington (3 miles east), St Pancras (7 miles east) and Shoreditch (9 miles east).
What’s near Gunnersbury
Recent enquiries here include premises near Clayton Hotel Chiswick, Kew College Prep and Ark Acton Academy and the streets around them. You’ll also find Turnham Green (0.5 miles east) and Library for Iranian Studies (1 mile north). Gunnersbury has its own railway station: Gunnersbury station. Nearby you’ll also find Barnes Hospital (2 miles south-east) and Livat Hammersmith (2.1 miles east). The countryside around Gunnersbury includes Kew Gardens Lake and Castlebar Hill.
From enquiry to sign-off
A typical day starts with protection: masking tape along the joint edges and sheeting over anything nearby. On site, the work normally takes a single visit for a short list of penetrations, or a phased programme for a whole building, and we clear our waste as we work. In Gunnersbury, most buildings stay in use during the work, so we agree zones and timings with the building or facilities manager. Phased work keeps the rest of the building in use.
- First we confirm the product and tested details named in the specification.
- Openings are measured and grouped by detail.
- 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.
What we need from you
- Point out parking and an unloading spot
- Send any specification or drawings in advance
- Let us know about inductions and permits
Get a fixed quote
To get a fixed quote, phone 01277 525 020 or email drawings and photos with the site address and an outline of the work. Our quote form is another easy route.
Read more
Honest limits
Not every problem is a sealant problem, and we’re upfront when that’s the case. It won’t fix:
- Walls or floors that aren’t fire-resisting to begin with
- Designing or specifying fire stopping, which sits with the designer or fire engineer
- Fire risk assessments, a job for a competent assessor
If in doubt, call the office on 01277 525 020 or email us and we’ll say what we think.
What we seal
- Linear gaps at wall heads
- Small duct penetrations where the tested detail allows
- Joints between fire-resisting walls and floors
- Cable penetrations
- Service gaps in risers
- Pipe penetrations
Surface by surface
Metal pipes
Heat travels along metal pipework, and the tested detail may ask for insulation beyond the wall. If the detail needs something beyond sealant, we tell you.
Cables and cable bundles
New data and power cables are the most common breach we see. Openings around new cables are resealed to the detail, and we tell you if the bundle exceeds what sealant covers.
Questions about Gunnersbury
Can you work in a London building with booked loading and goods-lift slots?
Yes, we plan every London job around the building’s own access rules. Say when the building is occupied and when it’s quiet, and we’ll plan accordingly. All of Greater London is inside the ULEZ, and our planning allows for it
What happens to BS 476 references for fire stopping in Gunnersbury?
References to BS 476 classes are being removed from Approved Document B from 2 September 2029, after which BS EN 13501-2 classification is the route, subject to transitional arrangements. Our part doesn’t change: the specified product, to its tested detail.
Which sealant will you use?
A specification, where there is one, decides it. If there isn’t one, it comes down to the joint: its movement, its surfaces and what it has to cope with.
How long do sealant joints last?
It depends on movement, UV and weather, cleaning, traffic and the product. Sealant joints are maintenance items, so inspect them regularly.
Is it fine to apply new sealant on top of old?
No, never. Sealing over old material is one of the classic causes of early joint failure, so everything comes out first.
Will you come and look before quoting?
Photos, drawings or a schedule are often enough to quote. Where they aren’t, we arrange a site visit before quoting.
Do you cover Gunnersbury?
Yes. Sites across Gunnersbury are covered, and the same phone number covers every area.