Greater London · England
Fire Rated Sealant in North Greenwich
Fire-stopping gaps in North Greenwich need attention? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Gaps flagged on a fire risk assessment
- Fire stopping disturbed by later work
- Old fire sealant that has split or come away
Fire rated sealant for homes and businesses in North Greenwich
We don’t assess buildings or decide what fire stopping is needed; your assessor, designer or building control sets that out. Our part is applying the specified sealant carefully, to the right depth and with the right backing. We work on plasterboard & masonry, pipe & cable gaps and linear gaps, and the jobs we see most are open joints along the top of partitions and gaps left after a refit or conversion.
In London’s blocks of flats, service risers and common parts have pipes and cables passing through walls and floors. For managing agents and building owners in North Greenwich, 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.
- Place
- North Greenwich (E14, SE8, SE10)
- Region
- Greater London
- Guarantee
- One year on every job
- Price
- A clear price before work begins
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Surface by surface
Flats and HMOs
In occupied buildings, we plan the order of work with you. Access to flats and common areas is agreed in advance so residents know what to expect.
Service penetrations
Pipes, cables and ducts passing through fire-resisting walls and floors each leave a gap. We seal it with a product tested for that service and gap size.
Towns and villages near North Greenwich
Also in North Greenwich
Can I do it myself?
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
A DIY attempt does not rule out a professional job. We cut it out and start again.
What affects the cost of fire rated sealant
The price is agreed before any work begins. It’s based on:
- Mould in or behind the old joints
- The old material and how stubborn it is
- How many rooms, windows or areas are involved
- How much there is to do
What it costs depends on the size of the job, how much old material has to come out and access to the work. You will have a clear quote before any work starts.
Helping us quote
To help us quote quickly, please include:
- How many joints, rooms or windows are involved
- Whether it has been sealed before
- Access, such as stairs, a lift or height
- Where the job is, and your postcode
If you’re in North Greenwich and need fire rated sealant, call 0345 464 0079 or email us. Tell us what the problem is and where, and you’ll get a clear quote before work begins.
How it works
On the day, there’s very little for you to do. Show us the job and we’ll take it from there. The work itself takes from a few hours to a few days, depending on the number of gaps and the access from start to finish. In a London area like North Greenwich, the main things to plan are parking and access: tell us about permits, visitor bays or off-street space, which floor we are working on and whether there’s a lift.
- 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.
- Unsuitable material such as ordinary foam or silicone is cut out.
- We fit backing where needed and apply the fire-rated sealant to depth.
- Every location is recorded with the product used for your records.
Preparing for the visit
- Try not to wet indoor joints just before the visit
- Clear items away from the joints we are working on
- Let us know if you’ve seen damp or leaks
Ask for a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints.
Advice
Fire rated sealant in North Greenwich: local notes
Commercial buildings in London often have strict access rules and limited loading, and out-of-hours working is possible to arrange. Workplaces and the common parts of blocks of flats in England need a fire risk assessment under the Regulatory Reform (Fire Safety) Order 2005, and gaps around services are often picked up there. We work to the specification you are given, installing the product to its tested details.
For site and facilities teams at buildings such as Harbinger Primary School, gaps opened by contractors for new cabling are a common finding in schools and offices. For landlords with property near Greenwich station, fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through. North Greenwich is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
North Greenwich is about 1 mile north-west of Greenwich, in Greater London. If you need fire rated sealant in North Greenwich, it’s easy to get a quote: please call 0345 464 0079 or send us an email. We cover Greater London from our Crawley base. Our area takes in 764 places across Greater London, large and small.
Jobs for fire rated sealant in E14, SE8 and SE10 works the same way as everywhere else we cover. Whether your property is on Creek Road, Wynan Road and Undine Road or anywhere close by, we can help. If you are just outside North Greenwich, we cover Isle of Dogs (1 mile south-east), Millwall (1 mile west), Cubitt Town (1 mile north-east), Deptford (1 mile south-west) and Greenwich (1 mile south-east). We also work in nearby towns such as London (3 miles west), City of Westminster (6 miles west), Marylebone (6 miles west), Kensington (8 miles west), St Pancras (5 miles north-west) and Shoreditch (4 miles north-west).
Landmarks near North Greenwich
In North Greenwich, that means homes and buildings near Laban Centre, Canary Wharf College 3 and St. Paul's, among other places. You will also find Mudchute Park and Farm (under half a mile north-east) and The Ferry House Public House (less than half a mile south-east). North Greenwich’s nearest station is Greenwich station, about 0.8 miles south. Other landmarks nearby include Old Royal Naval College (0.7 miles south-east) and Greenwich Castle (1.1 miles south-east). Green spaces nearby include Sue Godfrey Nature Park and Tower Hill.
When something else is needed
Honest advice matters more to us than a booking, so here’s what new sealant will not do:
- Fire doors that need new seals, closers or hardware
- 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 email us and we will say what we think before booking.
Joints and surfaces we work on
- Door frames
- Pipe & cable gaps
- Flats & HMOs
- Plasterboard & masonry
- Service penetrations
- Linear gaps
Leave it or put it right?
Doing it once, properly, beats doing it twice. Work that does not follow the tested detail may have to come out again when the building is next checked. In London conversions, one flat’s bathroom is often above another flat’s ceiling, and a slow leak from a failed seal can end up in the flat below. Putting it right early is much less trouble for homes in North Greenwich.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed. Call for a quick quote and we will go through it with you.
Why choose Mr Mastic in North Greenwich
- Homes, businesses and hotels
- 20+ years of sealant experience
- 180+ five-star Google reviews
- A 12-month guarantee on all work
Take a look at what affects the cost or customer reviews.
Work for landlords, hotels and businesses
We work for landlords and agents as well as householders. Sealant work between tenants keeps a property looking cared for before the next move-in.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Your questions about fire rated sealant in North Greenwich
I let a flat near Greenwich station. Can you help?
Yes, rental work is part of what we do. You can call 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before work begins.
Is parking a problem for a job in North Greenwich?
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.
Do you certify the fire stopping?
We don’t certify fire stopping or quote ratings. Our part is installing the specified product to its tested details and giving you a record of where it went.
Does someone need to be in?
That depends on where the joints are. Inside work needs someone to give us access.
Do you seal gaps around fire door frames?
Yes. Gaps behind architraves are a common job for us. Doors, seals and closers need a door specialist.
Are you fully insured?
Yes. We are fully insured.
Can I use normal mastic around a pipe through a fire wall?
No. Where a fire-rated seal is needed, it has to be a product tested for that use fitted to the maker’s details.
What should I tell you?
The location, the problem and the rough size of the job. Photos by email help too.