Fire Stopping in Northwick Park
Planning work on a service penetration in Northwick Park? We look at it, seal it with the right product and hand it over with a 12-month guarantee.
- Head-of-wall gaps with no fire seal
- Penetration schedules that need working through
- Unsealed openings around new pipes and cables
Fire stopping in Northwick Park
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Fire stopping for commercial buildings in Northwick Park
Where pipes, cables and other services cross a compartment wall or floor, the opening around them has to be closed so fire and smoke can’t move between compartments. Our job is fitting fire-rated and intumescent sealant at those service penetrations, and along linear gaps, where it is the specified product. We work to the product’s tested detail for every seal. We work on joints between fire-resisting walls and floors, small duct penetrations where the tested detail allows and cable penetrations, and the failures we’re asked to look at most are seals disturbed by maintenance and left open and unsealed openings around new pipes and cables. Most enquiries from Northwick Park start with one failed joint and grow into a wider look at the building: we look at the rest while we are there and tell you what we find.
In London, higher-risk residential buildings under the Building Safety Act bring extra scrutiny of fire-stopping records. We install what the designer or fire engineer has specified, and if you need records of the work, tell us and we will 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.
- Where
- Northwick Park (HA1, HA3, HA0)
- Wider area
- Greater London
- Guarantee
- A 12-month guarantee
- Quotes
- Quoted before any work starts
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
Common questions from Northwick Park clients
Do you cover business parks and estates near Northwick Park, such as Harrovian Business Village?
Yes. We cover Northwick Park and the area around it, including industrial estates, business parks and retail parks such as Harrovian Business Village. To start, just call 01277 525 020 or email drawings and photos with the unit, the joints involved and your access times.
Can you cope with the access rules in a London building?
Yes, we plan every London job around the building’s own access rules. Send the building rules and access times with your enquiry. The ULEZ covers the whole of Greater London, which we allow for
Do you guarantee your work?
Yes. It runs for twelve months and covers how we prepared and sealed the joints, but not damage, misuse or other trades’ work.
How soon can the area be used again?
That comes down to the sealant and the temperature. Some take light use quickly, others need longer to cure, and we confirm it before leaving site.
Can you tell us what fire stopping our building needs?
No. The specification comes from your designer, fire engineer or building control. Our role is installing what they specify, to the product’s tested detail.
How do I request a quote?
There are four steps: send details, get a quote, we seal, guaranteed. Step one needs little more than photographs and a postcode.
Do you hold third-party fire-stopping installer certification?
No. We don’t hold a third-party fire-stopping installer certificate. 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 straight away rather than waste your time.
Nearby places to Northwick Park
What else we do in Northwick Park
How a job runs
When we get to site, we report to your site contact and complete whatever induction the building runs. Floors, finishes and fittings next to the joints are covered before any cutting starts, with the work itself normally taking a single visit for a short list of penetrations, or a phased programme for a whole building. For a job in Northwick Park, access comes first. Send the building rules and access times with your enquiry.
- 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.
- Foam, ordinary sealant and debris come out first.
- The specified backing and sealant go in to depth and are finished neatly.
- We tell you about openings that need a different product.
Preparing the site
- Move anything stored against the joints
- Have the specification and drawings to hand
- Tell us which areas need to stay in use
Request a quote
A handful of photos and a postcode is the fastest way to a quote. Upload them with the quote form, or phone 01277 525 020 or use the quote form to discuss it first.
Read more
Keeping the joints sound
Every sealant joint needs some looking after, and their life depends on movement, exposure, cleaning and use. We suggest:
- Ask which product is in place before decorating
- Keep general-purpose fillers away from compartment walls
- Keep product data and details in the fire safety file
- Look above ceilings when tiles are lifted for other jobs
After the work, brief anyone else working in the area that the openings are now sealed. Any seal cut back for a new service needs reinstating to its tested detail using the same product.
Make reporting new openings part of every permit to work in service areas. Small habits like this stop openings building up.
Why act early in Northwick Park
It is cheaper to seal service penetrations as each services package finishes than to come back for them later. While the area is still open, every opening is easy to see and reach and each detail can be checked as we go. Getting scaffold, permits or access booked in Northwick Park takes effort, so it makes sense to deal with every failing joint while access is in place.
Every site prices differently: the joint sizes, the specified product, access and working hours each have a bearing. Send the details and a fixed figure follows.
Why clients in Northwick Park choose us
- CHAS accredited
- Sealing commercial buildings since 2005
- CSCS-carded applicators
- Clear, fixed quotes
See how commercial sealant jobs are priced and how we’re accredited.
Quoting for work in Northwick Park
Your fixed quote is built from the real scope. It takes account of:
- Phasing around occupants
- How much there is to seal
- Travel to remote or island sites
- How much existing material needs removing
Whether it’s a single area or a whole estate, the same things set the price: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote and we’ll put a fixed figure on it.
Details that help us quote
Diagnosis starts before we arrive. Tell us:
- What the building is and how it’s used
- Rough lengths or quantities, or drawings if you have them
- The product your specification calls for
- Anything awkward about access or site hours
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, give us a call on 01277 525 020 or email the details over.
Fire stopping in Northwick Park: the local picture
A 2-mile radius around Northwick Park takes in plenty of hotels. In hotels, bedroom and corridor walls are normally fire-resisting, so services added in a refit need sealing with the specified product. In England, Approved Document B covers fire stopping of openings and penetrations. Its BS 476 references are being withdrawn from 2 September 2029, with BS EN 13501-2 classification taking over, subject to transitional arrangements. What we install is set by the specification, and it goes in to the tested detail.
Offices at parks like Harrovian Business Village, 0.8 miles to the west of Northwick Park, are re-cabled with each new tenant, and compartment walls need sealing afterwards to the tested detail. Large healthcare estates like Northwick Park Hospital (less than half a mile east of Northwick Park) change their services often, so penetration seals are worth checking after M&E work. At a college such as Harrow College, 0.5 miles to the north-west of Northwick Park, checking penetration seals after summer M&E works is good practice.
Northwick Park is about 1 mile south-west of Kenton, in Greater London. Northwick Park sits inside our coverage, with the same fixed quotes and 12-month guarantee as everywhere else. 764 places across Greater London fall within our area, Northwick Park among them. There’s a separate page for London, about 11 miles away.
If you need fire stopping in HA1, HA3 and HA0, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. We cover commercial and managed buildings on Lyon Road, Manor Road and Gayton Road. Being close to the A404, Northwick Park is easy to get to with materials and equipment. We also cover Greenhill (1 mile north-west), Harrow on the Hill (1 mile south-west), South Kenton (1 mile east), Kenton (1 mile north-east) and Harrow (1 mile west). Bigger towns within reach include London (11 miles south-east), City of Westminster (9 miles south-east), Marylebone (9 miles south-east), Kensington (7 miles south-east), St Pancras (10 miles east) and Shoreditch (11 miles east).
Near you in Northwick Park
In Northwick Park, that means premises near St Anselm's Catholic Primary School, Orley Farm School and Preston Park, among other places. The nearest railway station is Kenton station, roughly 0.6 miles north-east of the centre. Nearby you’ll also find Northwick Park Hospital (under half a mile north-east) and Kodak Museum (1.5 miles north-west). Not far away are Masons Field and Northala Fields.
Site staff or a sealant 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. That’s why many clients bring in a specialist from the beginning.
The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are where general trades tend to cut corners.
Different surfaces, different methods
Metal pipes
Copper and steel pipes are a common service penetration for fire-rated sealant. Pipe diameter, annular gap, sealant depth and any pipe insulation all have to match the detail, so we check each one.
Cables and cable bundles
Cable penetrations are frequently sealed with fire-rated sealant where the detail allows. Bundle size, cable type and the space between cables all matter.