Greater London · England
Kings Cross Fire Rated Sealant
Professional fire rated sealant in and around Kings Cross, with every bit of old sealant taken out first and a one-year guarantee.
- Cracked or shrunken fire-rated sealant
- Damaged fire sealant left by other trades
- Open gaps behind door architraves
How the visit works
The work is kept neat and contained to the area we are working on. Expect the work to take anything from a few hours to several days, depending on how many gaps there are, and we explain the cure time before we leave. For a job in Kings Cross, parking and access are the things to plan: let us know about parking, the floor we’ll be working on and any lift or shared entrance.
- Access to each area is agreed so the work can run in order.
- Old, damaged or unsuitable sealant is removed.
- Dust and loose debris are cleaned from each gap.
- The fire-rated or intumescent sealant is applied and tooled to the tested detail.
- Locations and products are written up and any gaps unsuitable for sealant are flagged.
Before we arrive
- Tell us if parking is tricky
- Mention any tricky access
- Tell us about any water getting in
Getting 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 send us an email.
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Fire rated sealant in Kings Cross, done properly
Ordinary silicone or decorators’ caulk in a fire-stopping gap isn’t a fire-rated seal. Anything unsuitable comes out first and reseal with a fire-rated product tested for that kind of gap. Typical jobs include joints picked up in a fire-stopping survey and damaged fire sealant left by other trades, across service penetrations, flats & HMOs and pipe & cable gaps.
Across London, offices, shops, hotels, student halls and blocks of flats all need sealant work from time to time, whether that is washroom resealing or fire-rated sealant around service openings. Where a building in Kings Cross needs to stay open, work can be planned outside normal hours.
We stand behind the work with a 12-month guarantee, so you are not left on your own once the job is done.
- Place
- Kings Cross (NW1W, NW1, N1)
- Region
- Greater London
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Why act early in Kings Cross
A quick fill with any sealant to hand is not 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. Damp from a failed joint spreads quietly in older London brickwork and timber, and by the time it shows on a wall or ceiling in Kings Cross, the repair is bigger than the sealant job would have been.
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why book with us
- We are fully insured
- Sanitary silicone with an anti-fungal additive in wet areas
- Neat joints and a tidy finish
- We never seal over old sealant
Take a look at what affects the cost or our reviews.
Landlords, agents and businesses in Kings Cross
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. Several properties can be quoted together.
Can I do it myself?
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Also near Kings Cross
What else we do in Kings Cross
Looking after it afterwards
A little care helps the new joints last. Our advice:
- Check risers, ceiling voids and cupboards during building checks
- Photograph sealed gaps before they’re covered up
- Keep the record of products and locations with your fire safety documents
- Don’t fill fire-stopping gaps with ordinary foam or silicone
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.
It’s easiest to seal gaps while they’re few and easy to reach. Over time, more work adds more holes.
How the job changes by surface
Masonry and concrete
For masonry and concrete, we use a product tested in that substrate. We clean out dust and debris before sealing so the sealant bonds.
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 will flag it.
Questions from Kings Cross
Is parking a problem for a job in Kings Cross?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot, so mention what’s available when you book.
Do you work in hotels near Kings Cross?
Yes, hotels and guest houses are among the places we work. Rooms can be done a few at a time, so the building stays open.
I rent my home. Can I book you?
Yes, though it’s best to check with your landlord first. Many landlords are glad to have it sorted.
What does intumescent mean?
An intumescent material expands when it’s heated. Intumescent sealants are a type of fire-rated sealant.
Can you quote for more than one area?
Yes, and it often makes sense. Doing several areas at once is normally more efficient.
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 you tell me how many minutes the seal will last?
Ratings and certification sit with the product’s test evidence and whoever specified the work. We apply the specified product to the manufacturer’s details and list the locations and products for you.
Is there a guarantee?
Yes, for a year. If there’s a problem with our work in that time, tell us and we’ll put it right.
Honest limits
We’d rather tell you now than do work that won’t last, so here’s what sealant can’t put right:
- Doors that are not fire doors in the first place
- Fire risk assessments, which need a qualified assessor
- Large holes that need a different fire-stopping system
If you are not sure, just ring 0345 464 0079 or send us an email and we’ll give you a straight answer.
Surfaces we seal
- Pipe & cable gaps
- Flats & HMOs
- Service penetrations
- Door frames
- Plasterboard & masonry
- Linear gaps
Commercial buildings in Kings Cross
Commercial buildings in London often have strict access rules and limited loading, and out-of-hours working is possible to arrange. 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 work to the specification you’re given, installing the product to its tested details.
Managing a site like Argyle Primary School? Then fire-stopping around service openings should be restored whenever new services go in. Community buildings like Holy Cross Church are part of the picture too: older buildings that have had new heating or wiring often have service gaps worth checking. As a London address, Kings Cross can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Kings Cross is about 1 mile north-west of St Pancras, in Greater London. Wherever you are in the NW1W postcode area, our applicators can take on fire rated sealant. We cover 764 towns and villages across Greater London.
We cover every part of the NW1W, NW1 and N1 postcode area for fire rated sealant. Whether your property is on Euston Road, Duke's Road and Phoenix Road or anywhere close by, we can help. Kings Cross sits on or near the A501 and A4200, which makes travel easy. Close by, we work in Somers Town (1 mile west), St Pancras (1 mile south-east), Euston (1 mile south-west), Bloomsbury (1 mile south) and Agar Town (1 mile north-west). We also work in nearby towns such as Kensington (4 miles south-west), Walthamstow (6 miles north-east), Whitechapel (3 miles east), Hampstead (3 miles north-west), Ruislip (13 miles west) and Brompton (3 miles south-west).
Landmarks near Kings Cross
We work in homes and buildings around The Fellow pub, Lewis Cubitt Park and Pilsudski Institute of London. Also close by are Regent High School (0.5 miles north-west) and The Poor School (less than half a mile east). There’s a railway station in Kings Cross itself: London Kings Cross station. Other landmarks nearby include Sartorial Contemporary Art (less than half a mile south-east) and Brunswick Centre (under half a mile south). For a walk, there’s St. James's Park Lake and Ludgate Hill.