Greater London · England
Fire Rated Sealant in Lisson Grove
Problem with your fire-stopping gaps in Lisson Grove? We cut out the old, prepare the joints and apply the right sealant.
- Gaps where walls meet ceilings or slabs
- Fire stopping disturbed by later work
- Cracked or shrunken fire-rated sealant
About our fire rated sealant in Lisson Grove
A gap around a door frame, a linear joint at the head of a wall and a hole round a pipe are each sealed differently. Measuring the gap and checking what it’s made of comes first, then apply it to the depth its tested detail calls for. Common call-outs are for gaps around pipes and cables through fire-resisting walls and damaged fire sealant left by other trades, on service penetrations, plasterboard & masonry and door frames.
In London, a commercial job often starts with access: loading bays, building rules and lifts. For a building in Lisson Grove, we agree timings and access before anything starts, and room-by-room programmes can be planned where needed.
Each job carries a 12-month guarantee.
- Location
- Lisson Grove (NW8, W1H, W2)
- Region
- Greater London
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Landlord and commercial work in Lisson Grove
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
For anyone letting property in or around Lisson Grove, jobs at different addresses can be quoted together. Send us the addresses and the work at each, and pictures by email help.
What the job involves on each surface
Linear gaps
Linear gaps run along the head of walls, at floor edges and between panels. We seal them to the tested detail, with backing where it’s needed.
Service penetrations
Pipes, cables and ducts passing through fire-resisting walls and floors each leave a gap. The sealant is chosen for what passes through and how wide the gap is.
Why act early in Lisson Grove
An unsealed gap lets smoke and fire get round a wall that was built to hold them back. 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 from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether the work is at height. Your quote takes all of that into account.
Why book with us
- Experience in homes, commercial sites and hotels
- Sanitary silicone with an anti-fungal additive in wet areas
- 4.9 on Google from 180+ five-star reviews
- Any old sealant cut out fully, not covered over
Take a look at our cost guide and our reviews.
DIY versus a professional finish
If you are 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.
If you’ve already had a go yourself, that is fine. We cut it out and start again.
Questions from Lisson Grove
Do you work for hotels and guest houses in Lisson Grove?
Yes. Hotel and guest-house work is part of what we do. Jobs can be programmed room by room, with out-of-hours working possible to arrange.
Is parking a problem for a job in Lisson Grove?
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.
What does fire rated sealant cost?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote.
Can you match the sealant colour?
Normally, yes. White, clear and grey are common, and other colours are available, and we’ll agree it with you first.
Do you have insurance?
Yes. Mr Mastic is fully insured, and we have been doing sealant work for more than 20 years.
Which products do you use?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.
What fire rating will the seal have?
That is not something we state or certify. The requirement comes from your assessor, designer or building control, and we fit a product whose tested details meet it.
Do I have to be there?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
Aftercare tips
After the cure time, these simple habits help:
- Look in service cupboards and ceiling voids from time to time
- Include fire stopping when you schedule refits
- Check whether a sealant can be painted before decorating over it
- File the fire-stopping record where your assessor can find it
Keep the record we give you with the building’s fire safety documents. It saves time at the next inspection or assessment.
An open gap isn’t only a fire issue: noise, draughts and even pests can come through too. Dealing with them early helps with all of these.
Fire rated sealant in Lisson Grove: local notes
Many London buildings have tight access and loading restrictions, so out-of-hours working can be arranged where needed. There are hotels and other places to stay in and around Lisson Grove. For hotels, a room-by-room programme keeps most rooms in use while the work goes on.
Managing a site like Gateway Academy? Then gaps opened by contractors for new cabling are a common finding in schools and offices. Lisson Grove is in London, so parking needs planning: let us know about parking bays, permits or a driveway. For landlords with property near London Marylebone station, new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant.
Lisson Grove is about 1 mile north-west of City of Westminster, in Greater London. Jobs in Lisson Grove get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Across Greater London, we cover 764 places, and Lisson Grove is one of them.
Every address in NW8, W1H and W2 is covered for fire rated sealant, from the main roads to the quietest streets. Streets in the area include Hall Road, Park Road and Lodge Road, and we cover them all. Main roads around Lisson Grove include the A5 and A40, so getting to you is simple. Nearby, we also carry out fire rated sealant in Paddington Green (1 mile south-west), Paddington (1 mile south), Little Venice (1 mile south-west), Connaught Village (1 mile south) and St John's Wood (1 mile north). Further out, we also cover London (4 miles south-east), Shoreditch (4 miles east), Walthamstow (8 miles north-east), Hoxton (4 miles east), Whitechapel (4 miles east) and Ruislip (11 miles west).
What’s near Lisson Grove
Locally, jobs take us to homes and businesses close to RIBA Library, St John's Wood Art School and Regent's Park, among other places. There’s a railway station in Lisson Grove itself: London Marylebone station. Other landmarks nearby include Montfichet's Tower (3 miles east) and Maida Vale Hospital for Nervous Diseases (0.5 miles west). For a walk, there’s The Long Water and Greville Place nature reserve.
What affects the cost of fire rated sealant
Jobs vary more than people expect. What affects the quote:
- Any working-time requirements on site
- Whether the work is at height
- How many rooms, windows or areas are involved
- The number and length of the joints
What you pay reflects the work, not a rough estimate. That’s why we ask a few questions first.
What to tell us for a quote
What to tell us when you ask for a quote:
- Photos by email, if that’s easy
- How many joints, rooms or windows are involved
- Access, such as stairs, a lift or height
- Where the job is, and your postcode
Every job is quoted individually, so start by telling us what you need. Just ring 0345 464 0079 or email us with the details and send pictures if you have them.
The process
On the day, we look over the joints with you first. We protect the surfaces around the joints before any work begins. The work usually takes anything from a few hours to several days, depending on how many gaps there are. In Lisson Grove, flats, stairs and shared entrances are part of the routine. Mention any building rules, key holders or managing agents when you book.
- We begin by agreeing the list of gaps from your assessor’s or designer’s requirements.
- 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.
- The specified fire-rated sealant goes in over any backing its detail requires.
- Every location is recorded with the product used for your records.
Preparing for the visit
- For indoor joints, keep the area dry beforehand if you can
- Tell us about any water getting in
- Tell us about access, such as stairs, a lift or high-level joints
Getting 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, and add photos by email if you can.