Greater London · England
Fire Rated Sealant in Greenwich
Fire rated sealant for Greenwich, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Gaps where walls meet ceilings or slabs
- Unsealed gaps around fire door frames
- Sealant items on a fire risk assessment action list
About our fire rated sealant in Greenwich
Until it’s heated, intumescent sealant behaves like an ordinary sealant; then it swells to help close the gap. Which product suits a gap depends on its width, the materials either side and what runs through it, so we work to the manufacturer’s details. Typical jobs include open joints along the top of partitions and unsealed gaps where pipes and cables go through a wall, on service penetrations, linear gaps and door frames.
In London, a commercial job often starts with access: loading bays, building rules and lifts. For a building in Greenwich, we agree timings and access before anything starts.
You’re covered for a year from the day we finish. If anything is not right with it, ring 0345 464 0079 or email us.
- Where
- Greenwich (SE10, SE3, SE8)
- Wider area
- Greater London
- Cover
- A year, on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Fire rated sealant in Greenwich: local notes
Commercial buildings in London often have strict access rules and limited loading, so out-of-hours working can be arranged where needed. Greenwich 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 look after a church, hall or community building such as St Mary's Church, gaps around pipes and cables are worth checking after any building work there. Schools such as Meridian Primary School are buildings too, and fire-stopping around service openings should be restored whenever new services go in.
Greenwich is about 4 miles east of London, in Greater London. Every kind of property in Greenwich can book us for fire rated sealant. Every job comes with our 12-month guarantee. Greenwich is one of 764 towns and villages in Greater London we cover for fire rated sealant.
Our applicators cover all of the SE10, SE3 and SE8 postcode area for fire rated sealant and the streets around it. That includes homes and businesses on Cade Road, Webb Road and Creek Road. Being close to the A2203 and A2211, Greenwich is easy for our applicators to reach. Neighbouring places we cover for fire rated sealant include Maze Hill (1 mile north-east), Vanbrugh Park Estate (1 mile east), Blackheath (1 mile south-east), Westcombe Park (1 mile east) and Isle of Dogs (1 mile north-west). Within a short drive, we also cover London (4 miles west), City of Westminster (7 miles west), Marylebone (7 miles west), Kensington (9 miles west), St Pancras (6 miles north-west) and Shoreditch (5 miles north-west).
Around Greenwich
In Greenwich, that means homes and buildings near The Plume of Feathers pub, John Roan School and Royal School of Naval Architecture and Marine Engineering, among other places. Other local landmarks include Island Gardens (0.6 miles north-west) and St. Paul's (1.1 miles west). Greenwich has its own railway station: Maze Hill station. Other landmarks nearby include Greenwich Castle (within half a mile south-west) and Greenwich District Hospital (0.5 miles north-east). For a walk, there’s Tower Hill and Creekside Discovery Centre.
FAQs for Greenwich
Can you help a landlord with a rental near Maze Hill station?
Yes, landlords and agents are among the people we work for. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Do you take on hotel work around Greenwich?
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.
Are you insured?
Yes. We’re fully insured for every job we do.
Is standard sealant good enough for a fire gap?
No. Standard sealants are not made or tested to stop fire. We cut it out and reseal with a fire-rated product.
Can you give us a record of the work?
Yes. We record the locations we’ve sealed and the products used for your files.
Where is Mr Mastic based?
We work from Crawley. We cover Greenwich and the rest of Greater London, along with the rest of our area.
Will you leave a mess?
Very little: the area around the joints is protected first, and we tidy up before we go.
Can you fill the gap behind a fire door frame?
Yes. We seal the gap between the frame and the wall with a suitable fire-rated product, to the product’s details. The door, its seals and closer are for a door specialist.
DIY sealant or a professional job?
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Sealing over old silicone is the commonest DIY error. 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 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. In total, it generally takes a few hours for a handful of gaps, and longer for a whole building. In Greenwich, flats, stairs and shared entrances are part of the routine. If the building has a concierge, managing agent or access rules, tell us when you book.
- Access to each area is agreed so the work can run in order.
- Old, damaged or unsuitable sealant is removed.
- Gaps are cleaned of dust and loose material.
- We apply and tool the sealant to the product’s tested detail.
- Locations and products are written up and any gaps unsuitable for sealant are flagged.
Before we arrive
- Let us know if you’ve seen damp or leaks
- Plan for the work area to be out of bounds to pets and children
- Let us know about stairs, lifts or work at height
Ask for a quote
Need a quote? Please call 0345 464 0079 or drop us an email and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
Advice
Honest limits
We’d rather tell you now than do work that will not last, so these are the limits:
- Certifying a building or signing off its fire safety
- Assessing a building’s fire safety
- Large holes that need a different fire-stopping system
If you are not sure, just call 0345 464 0079 or send us an email and we will give you a straight answer before you book.
Joints and surfaces we work on
- Plasterboard & masonry
- Linear gaps
- Flats & HMOs
- Service penetrations
- Door frames
- Pipe & cable gaps
What affects the cost of fire rated sealant
Jobs vary more than people expect. What affects the quote:
- The size of the job
- How easy the joints are to reach
- How many areas need sealing
- The product the joint needs
What it costs depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. You’ll have a clear quote before any work starts.
Helping us quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- How many joints, rooms or windows are involved
- What’s wrong with the joints now
- How we’d reach the joints
- The address or postcode of the job
For fire rated sealant in Greenwich, call 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
Landlord and commercial work in Greenwich
We work for landlords and agents as well as householders. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
Failed sealant is one of the commonest items on a check-out report. We can quote for more than one property at once.
Signs you need fire rated sealant in Greenwich
Sealant applied too thin, without the backing its detail needs, or onto dust will not perform as it was tested. Rushed fire stopping is common.
People usually contact us after spotting something like this:
- Open holes round services passing through fire walls
- Unsealed gaps around fire door frames
- Fire seals that have cracked with movement
- New service routes left unsealed after building work
Greenwich is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
What your quote should include
- Who does the work, and how experienced they are
- The length of the guarantee
- What product goes in the joint
- Is VAT in the price?
Places near Greenwich
What else we do in Greenwich
Different surfaces, different methods
Masonry and concrete
Preparation counts on brick, block and concrete. We brush and vacuum the gap and use backing where the detail needs it before applying the sealant.
Linear gaps
Linear gaps run along the head of walls, at floor edges and between panels. They’re sealed with a fire-rated sealant over backing where the detail calls for it.