Greater London · England
Marylebone Fire Rated Sealant
Fire rated sealant across Marylebone and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Old fire sealant that has split or come away
- Joints picked up in a fire-stopping survey
- Holes left by a change of layout
About our fire rated sealant in Marylebone
Landlords, managing agents and facilities teams use us for the sealant items on a fire risk assessment for buildings in Marylebone. Send us the list or the survey and we will quote for the fire-rated sealant work on it. If you have seals cut through by electricians, plumbers or data installers and door frames with gaps between frame and wall, we can put it right, on door frames, pipe & cable gaps and service penetrations alike.
In London’s blocks of flats, service risers and common parts have pipes and cables passing through walls and floors. In Marylebone, building managers may need both fire-rated sealant around those openings and new sealant in shared washrooms.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Place
- Marylebone (W1U, W1T, W1K)
- Wider area
- Greater London
- Cover
- A year, on every job
- Quote
- A clear price before work begins
- Call
- 0345 464 0079
- Updated
- 26 October 2026
How the visit works
There isn’t much for you to do on the day. Show us the job and we’ll take it from there. The work itself takes anything from a few hours to several days, depending on how many gaps there are from start to finish. For a job in Marylebone, parking and access are the things to plan: tell us about permits, visitor bays or off-street space, which floor we’re working on and whether there’s a lift.
- We begin by agreeing the list of gaps from your assessor’s or designer’s requirements.
- We measure every gap and note what it’s in and what passes through.
- Any non-fire-rated filler is removed and the faces cleaned.
- We fit backing where needed and apply the fire-rated sealant to depth.
- We hand over a list of locations and products for your files.
Before we arrive
- Let us know about stairs, lifts or work at height
- Plan for the work area to be out of bounds to pets and children
- For indoor joints, keep the area dry beforehand if you can
How to get a quote
We don’t publish a price list, because every job is different. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or drop us an email.
Advice
Towns and villages near Marylebone
Other services in Marylebone
Quotes for fire rated sealant in Marylebone
Your quote is based on your job. We look at:
- Whether old sealant or filler has to be cut out
- The number of rooms or windows
- Mould in or behind the old joints
- When we can work, for business premises
What you pay reflects the work, not a rough estimate. That’s why we ask about the job first and give you a clear quote before we start.
What to tell us for a quote
There’s no need for technical detail. It helps if you can tell us:
- How we’d reach the joints
- A few pictures by email, if you can
- Any previous sealing or DIY work
- What the problem is, such as mould, gaps, leaks or cracking
To get a quote, ring 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. You’ll have a clear quote before work begins.
Leave it or put it right?
A quick fill with any sealant to hand isn’t fire stopping. A fire-rated product only performs as tested when it’s installed to its tested detail, which is why we match the product and the method to each gap. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and by the time it shows on a wall or ceiling in Marylebone, the repair is bigger than the sealant job would have been.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
Why book with us
- Experience in homes, commercial sites and hotels
- Anti-fungal sanitary silicone in wet areas
- Any old sealant cut out fully, not covered over
- Approved under the ARBOMaster scheme
Read what affects the cost or customer reviews.
Should I try it myself first?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
What fire rated sealant looks like in Marylebone
Commercial buildings in London often have strict access rules and limited loading, and out-of-hours working is possible to arrange. There are hotels and other places to stay in and around Marylebone. Hotel work can be planned room by room, with out-of-hours working where needed.
If you look after a church, hall or community building such as Russian chapel on Welbeck Street, gaps around pipes and cables are worth checking after any building work there. As a London address, Marylebone can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Marylebone is about 3 miles north-west of London, in Greater London. For fire rated sealant in and around Marylebone, it’s easy to get a quote: please ring 0345 464 0079 or drop us an email. We cover Greater London from our Crawley base, Marylebone included. Our area takes in 764 places across Greater London, large and small.
Work in W1U, W1T and W1K is quoted and booked the same way as anywhere else. You will find streets such as Park Lane, Duck Lane and Bruton Lane, and we cover them all. Marylebone sits on or near the A400 and A401, so getting to you is simple. We also cover City of Westminster (1 mile south-west), Mayfair (1 mile south), Fitzrovia (1 mile north-east), Burlington Estate (1 mile south-east) and Soho (1 mile south-east). Further out, we also cover London (3 miles south-east), Kensington (3 miles south-west), Shoreditch (3 miles east), Walthamstow (7 miles north-east), Hoxton (3 miles north-east) and Whitechapel (3 miles east). Marylebone is one of the larger places we cover in Greater London.
Near you in Marylebone
In Marylebone, that means homes and buildings near St Anne's Churchyard, The St Marylebone CofE School and Royal Society of Medicine Library. Also close by are The St Marylebone CofE School (within half a mile north-west) and The Phoenix pub (under half a mile south-east). There’s a railway station in Marylebone itself: Bond Street station. A little further out are Montfichet's Tower (2 miles east) and Twist Museum (under half a mile south-east). Open spaces near Marylebone include Adelaide Nature Reserve and St. James's Park Lake.
How to look after the new joints
So the new joints stay in good condition:
- Never patch a fire seal with standard sealant
- Include fire stopping when you schedule refits
- Look in service cupboards and ceiling voids from time to time
- Keep the record of products and locations with your fire safety documents
Include fire stopping in your regular building checks. Look for cracks, gaps or sealant that has been cut or pulled out and get them seen to.
Any job that breaks through a wall or ceiling should include resealing. Doing it at the time avoids leaving gaps behind.
What we’re called out for in Marylebone
Lots of unsealed gaps appear long after the building was completed. New cables, pipes and data runs go through walls and ceilings and the hole they leave does not always get resealed.
People normally contact us after spotting one of these:
- Door frames with gaps between frame and wall
- Damaged fire sealant left by other trades
- Cracked or shrunken fire-rated sealant
- Gaps filled with a product that isn’t fire-rated
Managing a site like St Vincent's Catholic Primary School? Then gaps opened by contractors for new cabling are a common finding in schools and offices.
What to look for in a quote
- How hidden problems are handled
- The length of the guarantee
- Which colour the sealant will be
- What the cure time is
What the job involves on each surface
Plasterboard walls
Plasterboard partitions are common in flats, offices and conversions. We use a product tested in that kind of wall for the gap we are sealing.
Masonry and concrete
Core-drilled and broken-out holes in concrete are often irregular. We check the gap size around the service to make sure it suits the product.
Marylebone: your questions answered
Do you work for landlords with property near Bond Street station?
Yes. We work for letting agents and landlords as well as householders. Just ring 0345 464 0079 or email us with the address and what needs doing, and we will give you a clear quote.
Do you work in hotels near Marylebone?
Yes, we work for hotels as well as homes and businesses. A room-by-room programme keeps most rooms in use while the work goes on.
Do you hold any approvals?
Yes. We hold ARBOMaster approved applicator status.
Can I do it myself?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
Do you take out the old sealant first?
Yes. We cut out all the old sealant and clean the joint before resealing.
How long does the job take?
A typical job takes from a few hours to a few days, depending on the number of gaps and the access. We’ll confirm how long when we quote.
What’s the difference between intumescent and fire-rated sealant?
Fire-rated is the broad term for sealants tested for fire stopping. Intumescent types expand when heated, and they’re one option among several. The specification and the tested detail decide which is used.
Can you fill the gap behind a fire door frame?
Yes. The joint between frame and wall is sealed with a fire-rated sealant. The door, its seals and closer are for a door specialist.