Greater London · England
Fire-rated sealant in Sydenham, Greater London
Problem with your fire-stopping gaps in Sydenham? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Gaps flagged on a fire risk assessment
- Standard silicone or caulk in a fire-stopping gap
- Gaps around pipes and cables through fire-resisting walls
Fire rated sealant in Sydenham
Intumescent sealant looks much like any other sealant until it gets hot; then it swells to help close the gap. Which product suits a gap depends on its width, the materials either side and what runs through it, so we follow the tested detail for each one. If you have open gaps behind door architraves and gaps where walls meet ceilings or slabs, we can put it right.
London’s offices, shops, hotels, student accommodation and blocks of flats all have joints to look after, from washroom silicone to fire-rated sealant around pipes and cables passing through walls. Where a building in Sydenham needs to stay open, work can be planned outside normal hours.
We stand behind the work with a 12-month guarantee.
- Where
- Sydenham (SE26, SE20, SE23)
- Region
- Greater London
- Guarantee
- One year on every job
- Quote
- A clear price before we start
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
For landlords and businesses
We work for landlords and letting agents as well as householders. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
Common problems we fix in Sydenham
Much fire stopping is hidden: above ceilings, inside risers and behind panels. Out of view, damage sits unnoticed until someone inspects.
If you can see any of these, it’s time to have the joints looked at:
- Joints picked up in a fire-stopping survey
- Unsealed gaps around fire door frames
- Unsealed gaps where pipes and cables go through a wall
- Open joints along the top of partitions
Managing a site like Kirkdale School? Then service openings in fire-resisting walls need checking after any refurbishment.
What your quote should include
- How the colour is chosen
- Whether VAT is included
- How much experience the applicator has
- Whether the sealant suits the joint
Can I do it myself?
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Towns and villages near Sydenham
Other services in Sydenham
Commercial buildings in Sydenham
In England, the Regulatory Reform (Fire Safety) Order 2005 requires a fire risk assessment for workplaces and for the common parts of blocks of flats, and gaps around services are often picked up there. We apply fire-rated sealant to the assessor’s or designer’s specification and the product’s tested details. Many London buildings have tight access and loading restrictions, and out-of-hours working is possible to arrange.
Letting a property close to Sydenham station? Then fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through. Sydenham is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
Sydenham is about 3 miles south-east of East Dulwich, in Greater London. Across the SE26 area, we can carry out fire rated sealant at your property. Our Greater London coverage runs to 764 places, Sydenham among them.
Every address in SE26, SE20 and SE23 is within our area for fire rated sealant, from the main roads to the quietest streets. If you need fire rated sealant at a property on Byne Road, Lucas Road and Cator Road or anywhere close by, we can help. If you’re just outside Sydenham, we cover Penge (1 mile south), Crystal Palace (1 mile south-west), Sydenham Hill (1 mile north-west), Perry Vale (1 mile north-east) and Anerley (1 mile south-west). Within a short drive, we also cover London (5 miles north), City of Westminster (7 miles north-west), Marylebone (8 miles north-west), Kensington (8 miles north-west), St Pancras (7 miles north) and Shoreditch (7 miles north).
Around Sydenham
Typical jobs here are in homes near St Bartholomews's Church of England Primary School, Sydenham High School and Mayow Park, among other places. There’s a railway station in Sydenham itself: Sydenham station. Nearby you’ll also find Greenwich Castle (4.3 miles north-east) and Crystal Palace Museum (1 mile west). For a walk, there’s Dacres Wood and Knight's Hill.
Different surfaces, different methods
Service penetrations
New gaps tend to show up where services have been added. Old or unsuitable filler comes out before the right sealant goes in with backing where the detail needs it.
Flats and HMOs
Flats and HMOs rely on fire separation between homes and the common parts. We seal the gaps your assessor has identified, flat by flat if needed.
How the visit works
On the day, we look over the joints with you first, so you know exactly what we are doing. Surfaces next to the work are protected before any work begins. The work generally takes from a few hours to a few days, depending on the number of gaps and the access. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. Mention any building rules, key holders or managing agents when you book.
- We plan the order of work and access, floor by floor or flat by flat.
- Old, damaged or unsuitable sealant is removed.
- Dust and loose debris are cleaned from each gap.
- We apply and tool the sealant to the product’s tested detail.
- Locations and products are written up and any gaps unsuitable for sealant are flagged.
Preparing for the visit
- Let us know if you’ve seen damp or leaks
- Tell us about any previous sealing or DIY attempts
- On commercial sites, let us know about site rules
Getting a quote
Asking for a quote is easy: let us know what needs doing and where. A few pictures by email make the job easier to understand, and we’ll take it from there.
Related advice
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. A few tips:
- Keep general-purpose foam and caulk away from fire-stopping gaps
- Look in service cupboards and ceiling voids from time to time
- Include fire stopping when you schedule refits
- Ask every contractor to reseal any fire stopping they disturb
Look at the sealed gaps as part of your routine walk-rounds. Watch for cracking, gaps or seals that have been disturbed and get them seen to.
It’s easiest to seal gaps while they’re few and easy to reach. Over time, more work adds more holes and the list grows.
What we can’t put right
It helps to know what we cannot do too:
- Construction that does not provide fire resistance on its own
- Openings too large for sealant, which need batts, boards or another system
- Fire risk assessments, which need a qualified assessor
If in doubt, phone 0345 464 0079 or send us an email and we’ll say what we think before you book.
Joints and surfaces we work on
- Service penetrations
- Plasterboard & masonry
- Door frames
- Linear gaps
- Pipe & cable gaps
- Flats & HMOs
Common questions in Sydenham
Can parking be tricky for a visit in Sydenham?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. The visit is then planned around what’s available.
Do you work for landlords with property near Sydenham station?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear price.
How long does the job take?
Most jobs take anything from a few hours to several days, depending on how many gaps there are. Your quote will say how long we expect yours to take.
Where do you work from?
Our base is Crawley. We work across South East England, London and Scotland.
Is the work guaranteed?
Yes: twelve months. If anything is not right with the work within the year, let us know and we’ll sort it.
Will there be a smell?
There can be a smell while the sealant cures, which fades as it sets. Opening a window helps.
Can ordinary silicone be used in a fire-stopping gap?
No. Ordinary silicone, caulk or foam is not tested as fire stopping. If it’s been used, we remove it and use the right product.
Can I choose the sealant colour?
We help you choose a colour that suits, from white and clear to greys and other shades. The choice depends on the product the joint needs.