Greater London · England
Sydenham Hill Fire Rated Sealant
We cover Sydenham Hill for intumescent and fire-rated sealant around gaps, frames and service penetrations. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Gaps filled with a product that isn’t fire-rated
- Unsealed gaps around fire door frames
- Sealant items on a fire risk assessment action list
How to look after the new joints
A little care helps the new joints last. Our advice:
- Include hidden areas like risers in routine checks
- Do not paint over fire sealant until it has cured
- Never patch a fire seal with standard sealant
- File the fire-stopping record where your assessor can find it
Keep the record we give you with the building’s fire safety documents. It saves time at the next inspection or assessment.
When you plan work that goes through walls or ceilings, plan the fire stopping too. Catching it then saves a separate visit later.
Fire rated sealant in Sydenham Hill
Until it’s heated, intumescent sealant behaves like an ordinary sealant; 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. We are often asked to deal with open joints along the top of partitions and gaps flagged on a fire risk assessment, across pipe & cable gaps, flats & HMOs and linear gaps.
London blocks of flats carry pipes and cables through walls and floors in their common parts and service risers. For managing agents and building owners in Sydenham Hill, that can mean fire-rated sealant around service openings as well as resealing in shared washrooms and kitchens.
A 12-month guarantee comes as standard, so you’re covered after we have gone.
- Place
- Sydenham Hill (SE26, SE23, SE21)
- Region
- Greater London
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Workplaces and buildings in Sydenham Hill
There are hotels and other places to stay in and around Sydenham Hill. For hotels, a room-by-room programme keeps most rooms in use while the work goes on. Commercial buildings in London often have strict access rules and limited loading, and out-of-hours working is possible to arrange.
If you look after a church, hall or community building such as Church of St Philip the Apostle, gaps around pipes and cables are worth checking after any building work there. As a London address, Sydenham Hill can be tricky for parking: let us know about parking bays, permits or a driveway. Rented homes near Sydenham Hill station change hands often, and new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant.
Sydenham Hill is about 1 mile east of West Norwood, in Greater London. From the centre of Sydenham Hill to the outskirts, fire rated sealant is available for homes and businesses alike. Sydenham Hill is one of 764 places in Greater London we cover.
All of SE26, SE23 and SE21 is covered for fire rated sealant, from the main roads to the quietest streets. Streets in the area include Grange Lane, Dallas Road and Lyall Avenue. We also cover the places around Sydenham Hill: West Dulwich (1 mile west), Sydenham (1 mile south-east), Crystal Palace (1 mile south), Dulwich (1 mile north-west) and Gipsy Hill (1 mile south-west). Further out, we also cover London (5 miles north), City of Westminster (7 miles north-west), Marylebone (7 miles north-west), Kensington (7 miles north-west), St Pancras (7 miles north) and Shoreditch (6 miles north).
Local landmarks in Sydenham Hill
In Sydenham Hill, that means homes and buildings near Long Meadow, The Wood House and Sydenham School and the streets around them. The nearest railway station is Sydenham Hill station, roughly 0.5 miles west of the centre. Nearby you will also find Horniman Museum and Gardens (0.6 miles north-east) and Lewisham Shopping Centre (3.2 miles north-east). Not far away are Knight's Hill and Dulwich Upper Wood.
Landlord and commercial work in Sydenham Hill
Hotels need rooms back in use, so we plan the work room by room. We have worked in hotels as well as homes and businesses.
For anyone letting property in or around Sydenham Hill, several properties can be quoted together. Send us the addresses and the work at each.
Leave it or put it right?
An unsealed gap lets smoke and fire get round a wall that was built to hold them back. Sealing it properly restores what the wall was there to do, and the work involved is often modest. Converted houses in London often have a bathroom above someone else’s living room, and a slow leak from a failed seal can end up in the flat below. Dealing with it early is far simpler for homes in Sydenham Hill.
Combining jobs into one visit generally makes better use of the time than several visits, so tell us about everything that needs sealing. We’ll send you a clear quote for the lot.
Why book with us
- Fully insured
- 4.9 on Google from 180+ five-star reviews
- Old sealant always removed completely
- We leave the area clean and tidy
See our cost guide or our reviews.
What we cannot put right
A few problems are outside what sealant work can do:
- Walls or floors that weren’t built to resist fire
- Deciding what fire stopping a building needs
- Big openings where sealant alone is not the tested solution
If in doubt, call 0345 464 0079 or drop us an email and we will say what we think before booking.
What we seal
- Door frames
- Linear gaps
- Flats & HMOs
- Pipe & cable gaps
- Plasterboard & masonry
- Service penetrations
What affects the cost of fire rated sealant
Jobs vary more than people expect. What affects the quote:
- The number and length of the joints
- Mould in or behind the old joints
- The number of rooms or windows
- Whether old sealant or filler has to be cut out
What you pay reflects the work, not guesswork. That’s why we ask about the job first and send you a clear quote before any work starts.
What we need to know
You don’t need to know the technical terms. Just tell us:
- If it’s domestic, commercial or a hotel
- The problem you’ve noticed
- The address or postcode of the job
- Photos by email, if that’s easy
Need a quote? Please call 0345 464 0079 or email us with a few details. We’ll explain what we’d do and give you a clear price before work begins.
The process
You do not need to clear the whole room or building, just the space around the work. We protect the rest, and the work takes from a few hours to a few days, depending on the number of gaps and the access for a typical job. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. If the building has a concierge, managing agent or access rules, tell us when you book.
- Before starting, we go through the specification or action list with you.
- We measure every gap and note what it’s in and what passes through.
- Any non-fire-rated filler is removed.
- We fit backing where needed and apply the fire-rated sealant to depth.
- Every location is recorded with the product used for your files.
Before we arrive
- Tell us if parking is tricky
- On commercial sites, let us know about site rules
- Let us know about earlier repairs to the joints
Getting a quote
We quote each job on its own. Simply ring 0345 464 0079 or email us and describe the job and send photos if you have them.
Read more
FAQs for Sydenham Hill
Do you work for hotels and guest houses in Sydenham Hill?
Yes, hospitality work, including hotels, is part of what we do. Work can be planned room by room, and out-of-hours working can be arranged.
Is parking an issue for fire rated sealant in Sydenham Hill?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. That way the visit can be planned around it.
Is it worth trying it myself?
Some simple jobs can be done by a careful DIYer. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Do you provide details of the products used?
Yes. Every gap we seal is listed with the product used.
Is intumescent sealant the same as fire-rated sealant?
Intumescent describes a material that swells in heat. Many fire-rated sealants work this way, but not all, and the choice depends on the gap.
Will you assess my building’s fire safety?
No, we do not assess buildings. When your assessor or designer has set out what’s needed, we can quote for the fire-rated sealant items.
Does someone need to be in?
For indoor joints, yes, someone needs to let us in. Once we’ve agreed the job, you don’t need to watch us work.
Can you seal over the old sealant?
No. Fresh sealant doesn’t stick to old sealant, and anything trapped underneath, including mould and water, stays there. We remove it all first.
Places near Sydenham Hill
Also in Sydenham Hill
Different surfaces, different methods
Plasterboard walls
Service holes in plasterboard are often rough and oversized. Gaps that are too big for sealant alone need a different detail, and we’ll tell you.
Service penetrations
Wherever a service goes through a fire-resisting wall or floor, there’s a gap around it. We seal it with a product tested for that service and gap size.