Greater London · England
Fire Rated Sealant in Soho
Fire rated sealant for Soho, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Damaged fire sealant left by other trades
- Unsealed gaps around fire door frames
- Cracked or shrunken fire-rated sealant
About our fire rated sealant in Soho
Intumescent sealant looks much like any other sealant until it gets hot; in a fire it expands into the joint. The right product depends on the gap size, the substrate and what passes through. If you are dealing with sealant items on a fire risk assessment action list and new service routes left unsealed after building work, we can help, whatever the surface.
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 Soho, that can mean fire-rated sealant around service openings as well as resealing in shared washrooms and kitchens.
Every job comes with our 12-month guarantee.
- Location
- Soho (W1F, W1T, W1D)
- Wider area
- Greater London
- Cover
- One year on every job
- Quotes
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Landlord and commercial work in Soho
Hotels need rooms back in use, so we plan the work room by room. We’ve worked in hotels as well as homes and businesses.
We also work for property managers and facilities teams in Soho and across Greater London. We can quote a run of properties together, and we’re fully insured for the work.
How we quote for fire rated sealant
For a quick quote, just ask. What matters most is:
- Whether there’s mould to deal with
- The number of rooms or windows
- Which sealant suits the joint
- Any working-time requirements on site
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs, along with when we can work on site. Ask us for a quote and we will explain what it covers.
What we need to know
Photos help, but a description is a good start. Please mention:
- The problem you’ve noticed
- Where the job is, and your postcode
- If someone has resealed it before
- A few pictures by email, if you can
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. Whenever you’re ready, call 0345 464 0079 or drop us an email.
Also in Soho
Fire rated sealant around Soho
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 are given, installing the product to its tested details. Commercial buildings in London often have strict access rules and limited loading, and out-of-hours working is possible to arrange.
For buildings such as St Anne's Church, older buildings that have had new heating or wiring often have service gaps worth checking. Schools such as Soho Parish CofE Primary School are buildings too, and fire-stopping around service openings should be restored whenever new services go in. Rented homes near Tottenham Court Road station change hands often, and new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant.
Soho is about 1 mile east of City of Westminster, in Greater London. Every kind of property in Soho can book us for fire rated sealant. Every job comes with our 12-month guarantee. Our area takes in 764 places across Greater London, large and small.
All of W1F, W1T and W1D is covered for fire rated sealant. Streets in the area include Duck Lane, Drury Lane and Bridle Lane. With the A4 and A301 close by, Soho is easy for our applicators to reach for fire rated sealant. If you’re just outside Soho, we cover West End (1 mile east), Chinatown (1 mile south), Seven Dials (1 mile east), St Giles (1 mile north-east) and St James's (1 mile south). Further out, we also cover Kensington (3 miles west), Walthamstow (7 miles north-east), Whitechapel (3 miles east), Hampstead (3 miles north-west), Ruislip (13 miles west) and Stockwell (3 miles south).
Landmarks near Soho
Typical jobs here are in homes near Bar Soho, St Anne's Churchyard and Harris Westminster Sixth Form. You’ll also find LITE Regal International School (0.6 miles west) and London Library (0.5 miles south-west). Soho has its own railway station: Tottenham Court Road station. A little further out are Kingly Court (under half a mile west) and Montfichet's Tower (1.3 miles east). Not far away are St. James's Park Lake and Ludgate Hill.
What happens on the day
There’s no need to move everything out before we come, only the area right around the joints. We protect the rest, and the job takes anything from a few hours to several days, depending on how many gaps there are in most cases. 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.
- First we work through your list or survey, measuring each gap and checking what it’s formed in.
- We remove any old or unsuitable filler and clean the gap.
- We put in whatever backing or fill the product detail specifies.
- Fire-rated or intumescent sealant is applied to the right depth and tooled.
- Finally, we list where we worked and what we used, for your records.
Before we arrive
- Clear the area around the work
- Keep children and pets away from the work area
- Let us know about earlier repairs to the joints
How to get a quote
Every job is quoted individually, so the first step is telling us about yours. Simply ring 0345 464 0079 or email us and describe the job.
Read more
How the job changes by surface
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 tell you.
Masonry and concrete
Preparation counts on brick, block and concrete. The gap is cleaned and backed where required.
How to look after the new joints
Joint life depends on how it’s used and looked after. We suggest:
- Flag any open gap you spot round a pipe or cable
- Store the list of sealed gaps with your building paperwork
- Don’t fill fire-stopping gaps with ordinary foam or silicone
- Keep photos of seals that will be hidden
Avoid covering a sealed gap with anything that isn’t part of the tested detail. Repairs should use a matching fire-rated product. We can tell you which product we used.
A gap left open in a fire-resisting wall or floor lets smoke spread in ways the building wasn’t designed for. Sealing it early is a simple step to take.
Your questions about fire rated sealant in Soho
Do you work for hotels and guest houses in Soho?
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.
Do you work for landlords with property near Tottenham Court Road station?
Yes, landlords and agents are among the people we work for. Just call 0345 464 0079 or send us an email with the address and what needs doing, and we will give you a clear quote.
Can you do several jobs on one visit?
Yes, and it often makes sense. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
Is there any odour?
It depends on the product. Some smell for a while, some hardly at all, and any smell fades as they cure.
Can I choose the sealant colour?
Generally, yes. White, clear and grey are common, and other colours are available, and we agree the colour with you before work begins.
What information do you need?
The location, the problem and the rough size of the job. Photos by email help too.
Where is Mr Mastic based?
We are based in Crawley, and we cover South East England, London and all of Scotland.
Will the old sealant be removed?
Yes. All of the old material is cut out and the joint cleaned.
Can I do it myself?
Some sealant jobs are within reach of a careful DIYer, 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.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
When something else is needed
New sealant cannot fix everything, and we’d rather say so up front. Sealant will not put right:
- Deciding what fire stopping a building needs
- Big openings where sealant alone is not the tested solution
- Sign-off of the building, which sits with building control or your assessor
If you are not sure, just ring 0345 464 0079 or send us an email and we’ll give you a straight answer before booking.
What we seal
- Pipe & cable gaps
- Plasterboard & masonry
- Linear gaps
- Flats & HMOs
- Service penetrations
- Door frames