Greater London · England
Fire Rated Sealant in Knightsbridge
Intumescent and fire-rated sealant around gaps, frames and service penetrations for homes and businesses in Knightsbridge and across Greater London. Fully insured, ARBOMaster approved and guaranteed for a year.
- Damaged fire sealant left by other trades
- Linear gaps at the head of walls
- Gaps filled with a product that isn’t fire-rated
Work for landlords, hotels and businesses
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
For anyone letting property in or around Knightsbridge, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs.
How we handle fire rated sealant in Knightsbridge
Where services or frames pass through a fire-resisting wall or floor, the gap around them needs a fire-rated seal. Each gap is sealed to the product maker’s tested detail for its size and substrate, and we can record what went where. Typical jobs include fire seals that have cracked with movement and gaps filled with a product that isn’t fire-rated, on 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 Knightsbridge, that can mean fire-rated sealant around service openings as well as resealing in shared washrooms and kitchens.
Every job is covered by a one-year guarantee, wherever you are in Greater London.
- Place
- Knightsbridge (SW1X, SW3, W1K)
- Wider area
- Greater London
- Guarantee
- 12 months on all our work
- Price
- A clear price before work begins
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Also near Knightsbridge
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Looking after it afterwards
Simple care keeps the joints in good condition. Our advice:
- Make resealing part of every contractor’s brief
- Check risers, ceiling voids and cupboards during building checks
- Report cracked or damaged seals as soon as you notice them
- Photograph sealed gaps before they’re covered up
Any fire seal that’s cut or drilled needs resealing to its tested detail. New services through a sealed wall should include fire stopping in the plan.
Open gaps don’t only matter in a fire: noise, draughts and even pests can come through too. Dealing with them early helps with all of these.
What happens on the day
Most of a good job is in the preparation, and we do not rush it. Joints are cleaned back and dried before anything new goes in. All told, the work 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 go through the gaps on your list or survey and check each one’s size and substrate.
- Old or unsuitable sealant is cut out and the gap cleaned.
- Backing or fill is fitted where the product’s tested detail calls for it.
- Fire-rated or intumescent sealant is applied to the right depth and tooled.
- We record the locations and products used for your records.
How to prepare
- Tell us if parking is tricky
- Mention any tricky access
- Clear items away from the joints we’re working on
How to get a quote
For a quote, phone 0345 464 0079 or drop us an email with the location and a short description of the problem. We will send you a clear quote before any work starts.
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Workplaces and buildings in Knightsbridge
Many London buildings have tight access and loading restrictions, so out-of-hours working can be arranged where needed. Knightsbridge has hotels and guest accommodation in and around it. For hotels, a room-by-room programme keeps most rooms in use while the work goes on.
If you let a flat or house near London Victoria station, any gap left by new services in shared walls should be closed with a fire-rated product. If you look after a building such as Hellenic College of London, service openings in fire-resisting walls need checking after any refurbishment. Community buildings like Deutsche Evangelische Christuskirche are part of the picture too: gaps around pipes and cables are worth checking after any building work there.
Knightsbridge is about 1 mile north of Brompton, in Greater London. Every kind of property in Knightsbridge can book us for fire rated sealant, old or new, large or small. Every job comes with our 12-month guarantee. Across Greater London, we cover 764 places, and Knightsbridge is one of them.
Our applicators cover all of SW1X, SW3 and W1K for fire rated sealant and the streets around it. You’ll find streets such as Hans Road, Park Lane and Cadogan Lane, and we cover them all. You will find Knightsbridge on the A315 and A4202, so it’s easy for us to get to with everything needed for fire rated sealant. Other places close to Knightsbridge include Tyburn (1 mile north), Mayfair (1 mile north-east), Hyde Park Estate (1 mile north), Connaught Village (1 mile north) and City of Westminster (1 mile north-east). Larger places within reach include London (3 miles east), St Pancras (3 miles north-east), Shoreditch (4 miles north-east), Walthamstow (8 miles north-east), Hoxton (4 miles north-east) and Whitechapel (4 miles east).
Around Knightsbridge
We work in homes and buildings around Saint Thomas More Language College, St Joseph's Catholic Primary School and Paxtons Head pub and the streets around them. Also close by are Natural History Museum Library and Archives (0.7 miles south-west) and Royal Parks of London (0.5 miles north). For rail, the closest station is London Victoria station, roughly 0.9 miles south-east of the centre. Nearby you will also find London Lock Hospital (0.6 miles east) and Westminster Synagogue Czech Memorial Scrolls Museum (less than half a mile west). Open spaces near Knightsbridge include Campden Hill and Greville Place nature reserve.
What affects the quote in Knightsbridge
Call for a quick quote. The main things that affect it are:
- Any mould that needs treating
- The product the joint needs
- How much old sealant there is and how hard it is to remove
- The number and length of the joints
Leaving a failed joint usually makes the job bigger, not smaller, because water and mould keep working on it. If you are unsure, ring 0345 464 0079 or send us an email for an honest opinion and a quote.
Helping us quote
When you contact us, these details help:
- Pictures of the joints, sent by email
- The type of property
- If someone has resealed it before
- Where the job is, and your postcode
Getting a quote is simple: let us know the job and the location, and roughly how big it is. Photos by email help us understand the job, and we will come back to you with a quote.
Knightsbridge: your questions answered
Do you work in hotels near Knightsbridge?
Yes, we work for hotels as well as homes and businesses. Rooms can be done a few at a time, so the building stays open.
Do you work for landlords with property near London Victoria station?
Yes, we work for landlords and letting agents. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we’ll give you a clear quote.
Will you assess my building’s fire safety?
No. Your fire risk assessor, designer or building control decides that. We apply fire-rated sealant to the requirements they set.
What information do you need?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
What’s the difference between intumescent and fire-rated sealant?
Intumescent describes a material that swells in heat. Many fire-rated sealants work this way, but not all and which one is used depends on the job.
Do you offer different sealant colours?
We help you choose a colour that suits, from white and clear to greys and other shades. The product needed can limit the range.
Can you quote for more than one area?
Yes, and it often makes sense. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
Can you tell me how many minutes the seal will last?
Ratings and certificates are not something we issue. The performance comes from the product’s tested details and the specification from your assessor or designer; we install to those details and record what we did.
What we can’t put right
A few problems are outside what sealant work can do:
- Construction that doesn’t provide fire resistance on its own
- Deciding what fire stopping a building needs
- Large holes that need a different fire-stopping system
If in doubt, call 0345 464 0079 or drop us an email and we will say what we think.
What we seal
- Door frames
- Pipe & cable gaps
- Service penetrations
- Linear gaps
- Plasterboard & masonry
- Flats & HMOs
Why deal with it now?
Fire-rated sealants need more care than everyday sealant. Depth, backing and surface preparation all affect how a seal performs, so we follow the maker’s details on every 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 Knightsbridge, the repair is bigger than the sealant job would have been.
Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
What you get with us
- 20+ years of sealant experience
- A 12-month guarantee on all work
- Trusted Arbo and Everbuild sealants
- Any old sealant cut out fully, not covered over
Read how sealant jobs are priced or our reviews.
DIY versus a professional finish
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.