Greater London · England
Fire Rated Sealant in Nine Elms
Intumescent and fire-rated sealant around gaps, frames and service penetrations for Nine Elms, backed by a 12-month guarantee. Call for a quick quote.
- Door frames with gaps between frame and wall
- Sealant items on a fire risk assessment action list
- Ordinary sealant used where a fire-rated product was needed
What the job involves on each surface
Masonry and concrete
Brick, block and concrete walls and floors are sealed with products tested in masonry. The gap is cleaned of dust first so the seal has something sound to bond to.
Service penetrations
New gaps tend to show up where services have been added. We clean out what’s there and reseal to the right depth.
About our fire rated sealant in Nine Elms
Landlords, managing agents and facilities teams use us for the sealant items on a fire risk assessment. If you share the list, we can quote for the gaps that need fire-rated sealant. If you have sealant items on a fire risk assessment action list and open joints along the top of partitions, we can help, on linear gaps, plasterboard & masonry and door frames alike.
In London, a commercial job often starts with access: loading bays, building rules and lifts. Timings and access are agreed with the building before work starts in Nine Elms, and room-by-room programmes can be planned where needed.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Location
- Nine Elms (SW1V, SW8, SW11)
- Region
- Greater London
- Cover
- 12 months on all our work
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
When it isn’t the sealant
It helps to know what we can’t do:
- Assessing a building’s fire safety
- Large holes that need a different fire-stopping system
- Fire doors that need new seals, closers or hardware
Not sure which it is? You can phone 0345 464 0079 or send us an email and we will tell you honestly.
What we seal
- Door frames
- Service penetrations
- Linear gaps
- Pipe & cable gaps
- Plasterboard & masonry
- Flats & HMOs
Common problems we fix in Nine Elms
Door frames are a common weak spot. The architrave hides the gap between frame and wall, so it can be left open when a door is replaced.
It’s worth asking for a quote if you see:
- Open holes round services passing through fire walls
- Gaps where walls meet ceilings or slabs
- Damaged fire sealant left by other trades
- Cracked or shrunken fire-rated sealant
If you look after a church, hall or community building such as All Saints, service openings in its walls need the right fire-rated sealant, as in any building.
Comparing quotes
- Are they insured?
- How the surfaces are prepared before sealing
- How long the guarantee is
- When the joint can take water or movement
Leave it or put it right?
An open gap in a fire-resisting wall is a route for smoke and fire. A proper seal lets the wall do its job again, and the work involved is often modest. In a London flat, a failed joint rarely stays your problem alone: water can reach the neighbours below, and gaps in fire-rated joints affect the whole building.
What you pay reflects the work, not a rough estimate. That is why we ask about the job first and agree the price before starting.
Why choose Mr Mastic in Nine Elms
- Full insurance on every job
- Domestic, commercial and hotel work
- Tidy, careful work
- One-year guarantee on every job
Aftercare tips
So the new joints stay in good condition:
- Never patch a fire seal with standard sealant
- Keep the record of products and locations with your fire safety documents
- Ask every contractor to reseal any fire stopping they disturb
- Don’t paint over fire sealant until it has cured
Leave the sealant to cure fully before painting near it. Not every fire-rated sealant takes paint and we’ll tell you which one you have.
If a fire risk assessment has flagged a gap, don’t leave it for the next one. Get it sealed and recorded so the item can be closed.
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 job generally takes a few hours for a handful of gaps, and longer for a whole building. In Nine Elms, as in most of London, parking needs a little planning. It helps if you can point us to a visitor permit or a bay close to the door.
- 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.
- Any non-fire-rated filler is removed and the faces cleaned.
- We fit backing where needed and apply the fire-rated sealant to depth.
- We hand over a list of locations and products.
Before we arrive
- For business premises, tell us about site rules or sign-in
- For indoor joints, keep the area dry beforehand if you can
- Let us know about parking restrictions
Ask for a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.
Related advice
Fire rated sealant in Nine Elms: local notes
There are hotels and other places to stay in and around Nine Elms. For hotels, a room-by-room programme keeps most rooms in use while the work goes on. Many London buildings have tight access and loading restrictions, and out-of-hours working is possible to arrange.
Managing a site like St Gabriel's CofE Primary School? Then gaps opened by contractors for new cabling are a common finding in schools and offices. Nine Elms is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Nine Elms is about 1 mile south of Victoria, in Greater London. Jobs in Nine Elms get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. 764 places in Greater London are on our list.
Here we cover the SW1V, SW8 and SW11 postcode area for fire rated sealant. If you need fire rated sealant at a property on Cupar Road, Ponton Road and Macduff Road or a nearby road, we can help. Nine Elms is on the A3212 and A3216, so it’s easy for us to get to with everything needed for fire rated sealant. Nearby, we also carry out fire rated sealant in Pimlico (1 mile north-east), Victoria (1 mile north), South Lambeth (1 mile east), Chelsea (1 mile north-west) and Kennington (1 mile east). Larger places within reach include Kensington (3 miles north-west), St Pancras (3 miles north), Shoreditch (4 miles north-east), Walthamstow (9 miles north-east), Hoxton (4 miles north-east) and Whitechapel (4 miles north-east).
Near you in Nine Elms
Locally, jobs take us to homes and businesses close to Pimlico Academy, Sir Simon Milton Westminster UTC and Lambeth Palace Library. Nearby too are Pimlico Gardens (0.5 miles north-east) and The King William IV pub (within half a mile north-east). Nine Elms has its own railway station: Battersea Park station. A little further out are Harrods (1.5 miles north-west) and Royal Hospital Chelsea (0.7 miles north-west). For a walk, there’s Battersea Park Lake and Campden Hill.
What affects the quote in Nine Elms
For a quick quote, just ask. What matters most is:
- Whether old sealant or filler has to be cut out
- The product the joint needs
- The number and length of the joints
- When we can work, for business premises
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. You will know the price before we begin.
What we need to know
When you call or email, these details help:
- Any access issues, like height or stairs
- A few pictures by email, if you can
- Roughly how big the job is
- What’s wrong with the joints now
It all starts with a short chat. Describe the problem, the location and the size of the job. Whenever you’re ready, call 0345 464 0079 or drop us an email.
Common questions in Nine Elms
Can parking be tricky for a visit in Nine Elms?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. The visit is then planned around what’s available.
Do you work for hotels and guest houses in Nine Elms?
Yes, hotels and guest houses are among the places we work. A room-by-room programme keeps most rooms in use while the work goes on.
Can you fill the gap behind a fire door frame?
Yes, where the gap suits a sealant detail. Our work is the gap around the frame and we’ll tell you if we spot problems with the door.
Will you assess my building’s fire safety?
No, we don’t assess buildings. When your assessor or designer has set out what’s needed, we’ll quote for the sealant work on it.
Do you come to Nine Elms?
We do. Our applicators work in Nine Elms, and the service is the same as everywhere else.
Can you give us a record of the work?
Yes. Locations and products are written up when we finish. If you need pictures or a set layout, ask when you get a quote.
Can new sealant go over the old?
No. We remove every bit of old sealant first.
Will it make a mess?
We keep the work tidy. We protect what’s around the joints, and the area is left clean when we finish.