Fire stopping in Horns Green
We carry out fire-rated and intumescent sealing of service penetrations and linear gaps in Horns Green and the surrounding area. Send photographs or drawings for a fixed quote.
- Expanding foam used as fire stopping
- Fire seals cut back for extra cables and never reinstated
- Hidden openings found during inspections
Need fire stopping in Horns Green?
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Fire stopping in Horns Green, done properly
For main contractors, our fire stopping package slots in after the M&E trades have finished in an area. To price a package, phone 01277 525 020 or email a schedule or drawings with the schedule or marked-up drawings. Tell us what records you need and we will confirm with the quote. Most enquiries involve unsealed openings around new pipes and cables and seals disturbed by maintenance and left open, across small duct penetrations where the tested detail allows, service gaps in risers and pipe penetrations. Facilities teams, main contractors and managing agents in Horns Green tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.
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.
Building owners and contractors get the same cover: twelve months on the work we carried out. It doesn’t extend to damage, faults in the building or work by others, and we’re upfront about that.
- Place
- Horns Green (TN14)
- Wider area
- Greater London
- Cover
- 12 months on our workmanship
- Quote
- Quoted before any work starts
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Why it’s worth doing now in Horns Green
A seal that doesn’t match its tested detail gives false comfort. Correcting it means cutting it out and starting again with the specified product. 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. Dealing with it early is simpler for everyone.
We don’t publish prices, since every building and every scope is different. For a fixed figure, call for a quote.
Why appoint us
- Constructionline member
- CHAS accredited
- 12 months’ guarantee on every job
- Fully insured, including public liability cover
See how commercial sealant jobs are priced or our accreditations and insurance.
Owners, agents and contractors
Hospitality, education, healthcare, office and retail clients book us directly too. The work is planned around how the building runs, so the building keeps working while we do.
If you look after buildings for someone else, you need clear quotes and clear reporting. You get a fixed quote, an agreed scope and a walk round at the end.
Compartments and services around Horns Green
In London buildings, frequent fit-outs and M&E changes are a common reason fire stopping gets breached. We seal to the specification and the product’s tested detail, working within the building’s permits. Approved Document B is the English guidance that covers fire stopping around openings and penetrations. From 2 September 2029, BS 476 references are being taken out of Approved Document B, leaving BS EN 13501-2 classification as the route, subject to the Government’s transitional arrangements. What we install is set by the specification, and it goes in to the tested detail.
In a school such as Charles Darwin School, fire-rated sealant goes in around service penetrations where it is specified. Large healthcare estates like Orpington Hospital, 3.8 miles to the north of Horns Green, change their services often, so penetration seals are worth checking after M&E work.
Horns Green is about 5 miles west of Sevenoaks, in Greater London. Looking for fire stopping in Horns Green? We can help. 764 places across Greater London fall within our area, Horns Green among them. We also cover London, some 15 miles away.
Postcode districts covered here: TN14. Buildings on Cudham Lane South and Thrift Lane are within our area for service penetrations. Nearby places we also cover include Burlings (1 mile north-east), Cudham (1 mile north-west), Berry's Green (1 mile north-west), Single Street (1 mile north-west) and Aperfield (2 miles west) for service penetrations. Bigger towns within reach include London (15 miles north-west), Stockwell (14 miles north-west), Orpington (5 miles north), Wimbledon (15 miles north-west), Plaistow (15 miles north) and Kennington (15 miles north-west).
Near you in Horns Green
In Horns Green, that means premises near The Blacksmith's Arms. Horns Green’s nearest station is Knockholt station, about 3.4 miles north-east. Well-known places in the area include Orpington Hospital (3.8 miles north). Not far away are Downe Bank and Betsom's Hill.
What we’re called out for in Horns Green
Openings in fire-resisting walls usually appear when services are added or changed. A new cable pulled by an electrician, a pipe rerouted by a plumber or a data run drilled through a riser can leave the hole behind. Over a few years of fit-outs, a wall can collect a lot of these.
It’s worth sending us details if you spot any of the following:
- Fire seals cut back for extra cables and never reinstated
- Improvised or mixed-product fire seals
- Open linear gaps along the top of fire-resisting walls
- Unsealed openings around new pipes and cables
Where a unit on an estate such as Biggin Hill Airport Trading Estate, 2.3 miles to the west of Horns Green, has fire-resisting walls between offices and warehouse, any new service through them should be sealed to the tested detail.
Questions to ask before you book
- Their public liability cover
- How long is the guarantee, and what does it include?
- How they handle RAMS and site documents
- Their pre-qualification and accreditations
Towns and villages near Horns Green
Other services in Horns Green
Surface by surface
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, and any outside it are raised with you.
Metal pipes
Metal pipes conduct heat, so their details often call for extra measures along the pipe, and some details add wrapping or a set length of insulation. We follow whatever the detail requires and flag anything we can’t match.
Your questions answered
Do you take on work at healthcare sites like Orpington Hospital?
Yes, hospitals are one of the sectors we cover. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.
What does the BS 476 change mean for fire-rated sealant in Horns Green?
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. Whichever applies, we install the specified product to its tested detail; the specification is for the designer to set.
How long does a job like this take?
We plan the time on site around your programme and access. We’ll give you an estimate of time on site when we quote.
What do you charge?
That depends on the job: quantities, access, the product and any phasing. Call for a quote and we’ll price it properly.
Is it fine to apply new sealant on top of old?
No. Sealing over old material is one of the classic causes of early joint failure, so everything comes out first.
Do you hold CHAS accreditation?
Yes. Mastic Doctor is CHAS accredited and a Constructionline member.
Do you guarantee your work?
Yes. It runs for twelve months and covers how we prepared and sealed the joints, though not damage or work by other trades.
Keeping the joints sound
Cleaning and maintenance staff play a part too. Pass these on to them:
- Brief every trade that openings they make must be sealed
- Have penetrations checked while they can still be seen
- Look above ceilings when tiles are lifted for other jobs
- Keep general-purpose fillers away from compartment walls
Allow the manufacturer’s stated cure time before boxing in or decorating. Not every fire-rated product can be painted, so check the product data first.
The simplest way to keep compartment walls intact is to plan fire stopping into every job that crosses them. That way the opening is sealed while the trade and access are still there instead of being left for someone else.
Diagnose, treat, sign off
Diagnose, treat, sign off: every visit follows that pattern. We inspect the joints and confirm what’s in scope, then we prepare and seal each joint with the specified product, and the job ends with a walk round and sign-off. For a job in Horns Green, access comes first. Give us the hours we can be on site and we’ll schedule to suit.
- First we confirm the product and tested details named in the specification.
- We sort the openings by the detail each one needs.
- 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.
- We walk the completed areas with you and confirm the records agreed at quote stage.
What we need from you
- For older buildings, check the asbestos register before work
- Arrange parking or a loading space
- Share your working hours and any access restrictions
Request a quote
Specifications, drawings and tender packages are welcome with any enquiry, and we will price the work to it. Smaller jobs need nothing more than photographs and a few notes.