Fire-rated sealing and fire stopping in Coombe, Greater London
Planning work on a service penetration in Coombe? We assess it, carry out the work and guarantee our workmanship for 12 months.
- Unsealed penetrations discovered above suspended ceilings
- Non-fire-rated filler around services
- Head-of-wall gaps with no fire seal
Fire stopping in Coombe
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
What sets the cost
These are the things that shape the price:
- Location, for remote and island sites
- Whether old sealant has to be cut out first
- Any access equipment needed
- Phasing around occupants
We don’t publish prices, because the scope varies so much from one building to the next. For a fixed figure, call for a quote.
What we need to price the job
A good diagnosis starts with the right details. Tell us:
- Any dates the work must fit around
- Asbestos survey details if the building is older
- Rough lengths or quantities, or drawings if you have them
- Any specification or named product
Need a figure for a tender or a budget? Send the scope and any drawings, and we will return a fixed quote that you can work with. For a chat about it beforehand, speak to us on 01277 525 020 or email a schedule or drawings.
Fire stopping for commercial buildings in Coombe
Sealant is the specified answer for plenty of openings, such as metal pipes, cables and some small ducts where the detail covers them. Other openings need collars, wraps, batts, pillows or boards. We use sealant where it is the specified product, and we tell you when a detail calls for something else. Most enquiries involve fire stopping installed outside its tested range and head-of-wall gaps with no fire seal, on small duct penetrations where the tested detail allows, cable penetrations and service gaps in risers. Searching for sealant specialists in Coombe? Mastic Doctor has worked for contractors, FMs and building owners since 2005, CHAS accredited and a Constructionline member.
Taller residential buildings in London may fall under the Building Safety Act’s higher-risk regime, where fire-stopping records get close attention. We install what the designer or fire engineer has specified, and if you need records of the work, tell us and we’ll confirm with the quote.
Our 12-month guarantee is about workmanship, not wear and tear. How long a sealant joint lasts depends on movement, exposure, cleaning and use, so we spell out the cover before we begin.
- Place
- Coombe (CR0, CR2, CR9)
- Region
- Greater London
- Guarantee
- A 12-month guarantee
- Quotes
- Quoted before any work starts
- Phone
- 01277 525 020
- Updated
- 3 November 2026
Fire stopping around Coombe: points for this area
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. For England, the fire stopping of penetrations is dealt with in Approved Document B. 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.
For a unit at a centre such as Whitgift Centre, 1.6 miles north-west of Coombe, penetration seals are worth checking after each shop fit. For a site team at a college like Croydon College (1.3 miles north-west of Coombe), fire-rated sealing is best scheduled after the summer works. On a hospital site such as Shirley Oaks Hospital, which lies north-east of Coombe, fire-rated sealant goes in where the specification calls for it, with the work planned around the estates team’s permits.
Coombe is about 1 mile east of Croydon, in Greater London. Coombe sits inside our coverage and the rest of Greater London, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. 764 places across Greater London fall within our area, including Coombe. London is covered too, around 9 miles from Coombe.
Work on service penetrations is covered throughout CR0, CR2 and CR9. We cover commercial and managed buildings on Oaks Road, Coombe Road and Coombe Lane and the roads nearby. Sites close to Coombe are covered too, including Croydon (1 mile west), Addiscombe (1 mile north), South Croydon (1 mile south-west), Shirley Oaks (1 mile north-east) and Shirley (1 mile north-east). Bigger towns within reach include London (9 miles north), City of Westminster (11 miles north), Marylebone (11 miles north), Kensington (11 miles north-west), St Pancras (11 miles north) and Shoreditch (11 miles north).
What’s near Coombe
In Coombe, that means premises near Coombe Lodge pub, Royal Russell School and St Peter's Primary School. The nearest railway station is South Croydon station, about 1 mile west. A little further out are St George's Walk (1.4 miles north-west) and Croydon Airport Visitor Centre (2.1 miles west). For a walk, there’s Bramley Bank and Duppas Hill.
Surface by surface
Plastic pipes
Plastic pipes soften and collapse in a fire. Some intumescent sealants are tested on smaller plastic pipes, though larger ones typically call for a collar or wrap. We check the pipe material and diameter against the detail before we start.
Small ducts
Some fire-rated sealant details cover small ducts. Larger or fire-rated ductwork normally needs a different solution set by the designer, and we’ll say if that applies.
Towns and villages near Coombe
Also in Coombe
When it isn’t the sealant
Some faults sit outside our scope, and we point that out rather than sealing over them:
- Construction that lacks the fire resistance the seal relies on
- Approving the work on behalf of building control
- Fire risk assessments, a job for a competent assessor
If in doubt, call the office on 01277 525 020 or send details through our quote form and we’ll say what we think.
What we seal
- Cable penetrations
- Service gaps in risers
- Small duct penetrations where the tested detail allows
- Linear gaps at wall heads
- Pipe penetrations
- Joints between fire-resisting walls and floors
Why act early in Coombe
An unsealed opening affects more than fire safety: they also carry noise, draughts and smells between rooms. The specified fire seal closes the gap for all of these and the building feels the difference. In a London building, a failed joint rarely affects only one party: water travels through shared structures, and a small leak becomes a dispute between occupiers. Putting it right early is less disruptive than dealing with the consequences.
Quantities, awkward access and phased working all shape the price. Site requirements like inductions and permits play a part as well.
Why appoint us
- Fixed quotes based on photos, drawings or a visit
- Joints cleaned back to sound surfaces
- One number for every site we cover
- Commercial sealant work since 2005
See our cost guide or how we’re accredited.
When to bring in a specialist
Using site staff can make sense for a small touch-up, but larger jobs are different: a specialist brings efficiency, a consistent finish and a 12-month guarantee.
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.
From enquiry to sign-off
Before we leave any area, we remove the tape, clean down and inspect every joint, ready for your sign-off. If an area should be left alone while the sealant cures, we say how long and put signs out. Planning a London job such as one in Coombe starts with access: booked loading, goods lifts, the building’s permit system and a spot to keep materials. Send the building rules and access times with your enquiry.
- We ask for the product and detail your designer has specified.
- Openings are measured and grouped by detail.
- Improvised fillers and failed sealant are removed.
- Where the detail needs backing, it goes in at the stated depth.
- We gun the sealant in to the specified depth around each service and tool it.
- Completed areas are checked with you, with the records agreed when we quoted.
Preparing the site
- Send your site hours and access windows
- Agree which areas must stay open
- Explain the parking and delivery arrangements
Get a fixed quote
Send us photos, drawings or a joint schedule and a fixed quote comes back to you. If the job needs a look first, we’ll arrange a site visit.
Read more
Common questions from Coombe clients
Would you work within a site like Shirley Oaks Hospital?
Yes, healthcare and care buildings are part of our work. The estates team’s permit system and infection-control rules come first, and the work is planned around them.
Do you work in occupied care homes around Coombe?
Yes. We agree rooms and times with the manager and work a few areas at a time. We follow the home’s own procedures throughout.
Will you just go over the old sealant?
No. Overlaying old sealant is a frequent cause of early failure, so it all comes out first.
Is colour matching possible?
Often, yes. Sealants are made in a wide range of standard colours, and matching to RAL references or nearby finishes is commonly requested. We confirm what’s available for the specified product when we quote.
How soon can the area be used again?
The product and site conditions decide that. Some take light use quickly, others need longer to cure, and we confirm it before leaving site.
How do you deal with asbestos in old sealant?
Managing asbestos is the dutyholder’s responsibility, so we’ll ask for the register before work on an older building. Work pauses if suspect material is found, until it has been tested.
What do BS EN 1366-3 and BS EN 13501-2 mean?
BS EN 1366-3 covers penetration seals and BS EN 1366-4 covers linear joints. Results are classified under BS EN 13501-2. That rating only holds when the product is installed to its tested detail.