Fire stopping in Colindale
Sealant work in Colindale for main contractors, managing agents and facilities managers: fire-rated and intumescent sealing of service penetrations and linear gaps, with a fixed quote first.
- Open linear gaps along the top of fire-resisting walls
- Penetration schedules that need working through
- Seals that don’t match their tested detail
Fire stopping in Colindale
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
How the job changes by surface
Linear joints
Head-of-wall gaps, slab edges and wall junctions are linear joints. Their tested detail, under BS EN 1366-4, sets the width, depth, backing and movement allowed, and we work within it.
Masonry and concrete
Core-drilled holes are neat; broken-out ones rarely are. Each gap is measured where it is widest so we know it sits within the tested range.
Fire stopping in Colindale
Sealant is the specified answer for plenty of openings, such as metal pipes, cables and some small ducts where the detail covers them. Larger openings and some plastic pipes call for collars, wraps, batts or boards instead. We use sealant where it is the specified product, and we tell you when a detail calls for something else. If you have fire sealant pulled out of the opening and unsealed joints where partitions meet the slab, we can help, whatever the surface. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: in Colindale, that means joint design, primers and backing rod as standard.
Fit-outs and M&E works in London buildings often leave service penetrations open behind ceilings and in risers. Fire-rated sealant goes in where it’s the specified item; where a collar, wrap or batt is called for instead, we flag it.
Every job we finish is backed by a 12-month workmanship guarantee, in Colindale as everywhere else we work. If our installation lets you down in that time, we return and fix it.
- Where
- Colindale (NW9, NW4, HA8)
- Wider area
- Greater London
- Cover
- 12 months on every job
- Quote
- A fixed quote before we start
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
Maintenance after handover
Once the work is signed off, these steps help:
- Ask the designer to confirm details early on refits
- Get seals inspected before ceilings and boxing close
- Record which product was used where
- Treat an open penetration as a priority repair
During planned inspections, look at seals in risers, cupboards and voids. Look for cracks, unsealed new cables and gaps that have been enlarged, and report them promptly.
Looking at service areas on a regular cycle pays off. A cracked or disturbed seal found early is a small job.
Quoting for work in Colindale
A fixed quote reflects the actual work. It allows for:
- The product specified
- Distance, for remote addresses
- How much existing material needs removing
- Phasing around occupants
The product called for affects the cost, as does the preparation each joint needs, from cutting out to priming and backing rod. Access, phasing and site requirements come into it too.
Details that help us quote
We can often quote from photographs and a few details. Please tell us:
- Any dates the work must fit around
- What the building is and how it’s used
- The product your specification calls for
- Approximate linear metres or a joint schedule
Photos, drawings or a schedule of the joints are often enough for a fixed quote. Where a site visit makes more sense, we’ll arrange one.
Leave it or put it right?
An unsealed opening affects more than fire safety: smoke, noise and draughts pass through them every day. Sealing them to the specified detail deals with the fire risk first, and the other benefits follow. Getting scaffold, permits or access booked in Colindale takes effort, so it makes sense to deal with every failing joint while access is in place.
Quantities, awkward access and phased working all shape the price. So do site requirements such as inductions and permits.
Why clients in Colindale choose us
- Fixed quotes based on photos, drawings or a visit
- A Constructionline member, so easy to vet
- Fully insured, including public liability cover
- Failed material removed, not covered up
See what affects the cost and our accreditations and insurance.
Questions about Colindale
Can you work in a care home near Colindale with residents in?
Yes. We work around residents’ routines, a room or two at a time. We follow the home’s own procedures throughout.
Can you seal around new services in a hotel near Colindale?
Yes, where fire-rated sealant is the specified product. Work is done room by room so the hotel keeps trading; design and sign-off stay with the designer and building control.
What will the job cost?
There isn’t a price list, because every site is different. With photographs or drawings, we can give you a fixed quote.
Can one quote cover more than one building?
Yes. A group of buildings can go on one quote, and you deal with one contact throughout.
Are you CHAS accredited and on Constructionline?
Yes. We’re CHAS accredited, we are a Constructionline member and we use CSCS-carded applicators.
Do you offer coloured sealant?
That depends on the product. Some ranges are wide, others limited, so we will confirm the colours available for the specified product with the quote.
Do your applicators hold CSCS cards?
Yes. If you need card details for site access, tell us and we will confirm them with the quote.
When it isn’t the sealant
Some faults sit outside our scope, and we say so rather than covering them up:
- Openings that need collars, wraps, batts or boards rather than sealant
- Approving the work on behalf of building control
- Construction that lacks the fire resistance the seal relies on
If in doubt, ring 01277 525 020 or email the details over and we’ll say what we think.
Surfaces we seal
- Pipe penetrations
- Service gaps in risers
- Linear gaps at wall heads
- Cable penetrations
- Small duct penetrations where the tested detail allows
- Joints between fire-resisting walls and floors
Fire stopping around Colindale: how the place shapes the job
There are plenty of hotels within about 2 miles of Colindale. Bedroom-to-corridor walls in hotels are normally fire-resisting, so new cabling or pipework through them has to be sealed to the tested detail. London’s office and residential buildings are refitted constantly, and each round of cabling or pipework can leave open penetrations. We install fire-rated sealant where it is specified and work within the building manager’s permit system.
Hotels like Hendon Hall Hotel (to the east of Colindale) are refurbished in phases, and each phase can open up compartment walls. For an estates team at a campus like Middlesex University, less than half a mile north-east of Colindale, summer M&E works are usually followed by a round of penetration sealing. On a hospital site such as BMI Hendon Hospital, which lies east of Colindale, fire-rated sealant goes in where the specification calls for it, with the work planned around the estates team’s permits.
Colindale is about 1 mile south-east of Burnt Oak, in Greater London. Looking for fire stopping in Colindale? We can help, as we do across Greater London. 764 places across Greater London fall within our area, including Colindale. There’s a separate page for London, roughly 9 miles from Colindale.
Business premises anywhere in NW9, NW4 and HA8 are within our area for service penetrations. Buildings on Cecil Road, Booth Road and Ajax Avenue are within our area. With the A5150 nearby, Colindale is straightforward for us to reach. Nearby places we also cover include West Hendon (1 mile south), The Hyde (1 mile south), The Burroughs (1 mile east), Hendon (1 mile south-east) and Kingsbury (1 mile south-west). Nearby towns on our patch include London (9 miles south-east), City of Westminster (7 miles south-east), Marylebone (7 miles south-east), Kensington (7 miles south), St Pancras (7 miles south-east) and Shoreditch (9 miles south-east).
Around Colindale
We work on buildings around Sunny Hill Park, Saracens High School and Kisharon College. The nearest railway station is Hendon station, roughly 1 mile south-east of the centre. Nearby you will also find Edgware Community Hospital (1.3 miles north-west) and Brent Cross Shopping Centre (1.5 miles south-east). Open spaces near Colindale include Darland's Lake and Parliament Hill.
Towns and villages near Colindale
More services for Colindale
Our process
We begin with a short walk round with whoever looks after the building, to confirm the scope, the order of work and any areas we must keep clear. After that, any old or failed material is removed, each joint is prepared and the new sealant goes in. The ULEZ covers the whole of Greater London, and parking near a job is rarely simple. If there’s a loading bay, a car park or a permit we can use, tell us when you send details.
- We start with your penetration schedule, drawings or specification.
- 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 so the seal starts clean.
- The specified backing and sealant go in to depth and are finished neatly.
- Anything outside the detail is reported to you rather than sealed.
Getting the site ready
- Share your working hours and any access restrictions
- Move anything stored against the joints
- Have the specification and drawings to hand
Request a quote
A good quote starts with a clear picture: the joints involved, quantities, access and the product called for. Send what you have, and we’ll arrange a site visit if anything is unclear.