Greater London · England
Fire-rated sealant in South Lambeth, Greater London
Intumescent and fire-rated sealant around gaps, frames and service penetrations for householders, landlords and businesses in South Lambeth. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Fire seals that have cracked with movement
- Unsealed gaps around fire door frames
- Ordinary sealant used where a fire-rated product was needed
Your questions about fire rated sealant in South Lambeth
Is parking a problem for a job in South Lambeth?
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 South Lambeth?
Yes, hospitality work, including hotels, is part of what we do. Jobs can be programmed room by room, with out-of-hours working possible to arrange.
Where is Mr Mastic based?
We work from Crawley. Our applicators cover South Lambeth.
What information do you need?
A short description and the location, with pictures by email if possible. If we need more, we’ll ask.
Is there any odour?
Sometimes, a little. It fades as the sealant cures.
What fire rating will the seal have?
Ratings and certification sit with the product’s test evidence and whoever specified the work. We apply the specified product to the manufacturer’s details and list the locations and products for you.
Can tenants book the work?
Yes, though it’s best to check with your landlord first. Many landlords are glad to have it sorted.
Do you have insurance?
Yes. We’re fully insured for every job we do.
About our fire rated sealant in South Lambeth
Ordinary silicone or decorators’ caulk in a fire-stopping gap isn’t a fire-rated seal. Anything unsuitable comes out first and the gap is resealed with a product tested for that use. We work on service penetrations, flats & HMOs and plasterboard & masonry, and people most often call us about gaps filled with a product that isn’t fire-rated and holes left by a change of layout.
In London’s blocks of flats, service risers and common parts have pipes and cables passing through walls and floors. In South Lambeth, building managers may need both fire-rated sealant around those openings and new sealant in shared washrooms.
A 12-month guarantee comes as standard, so you’re covered after we have gone.
- Location
- South Lambeth (SW8, SW9, SW1P)
- Region
- Greater London
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
How we quote for fire rated sealant
The price is agreed before any work begins. It’s based on:
- The number and length of the joints
- Access and height
- The type of sealant required
- How much old sealant there is and how hard it is to remove
A failed joint rarely gets cheaper to fix by waiting. If you are not sure whether it needs doing, call 0345 464 0079 or send us an email for an honest opinion and a quote.
What to tell us for a quote
There’s no need for technical detail. It helps if you can tell us:
- Pictures of the joints, sent by email
- Any access issues, like height or stairs
- If it’s domestic, commercial or a hotel
- If someone has resealed it before
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we will explain what’s involved.
Places near South Lambeth
Other services in South Lambeth
When something else is needed
New sealant can’t fix everything, and we’ll tell you before we start. Sealant will not put right:
- A wall that isn’t a fire-resisting element to begin with
- Openings too large for sealant, which need batts, boards or another system
- Certifying a building or signing off its fire safety
If you are not sure, just call 0345 464 0079 or send us an email and we’ll give you a straight answer.
Surfaces we seal
- Plasterboard & masonry
- Door frames
- Linear gaps
- Service penetrations
- Pipe & cable gaps
- Flats & HMOs
Can I do it myself?
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
What happens on the day
When we get to you, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. Most jobs then take a few hours for a handful of gaps, and longer for a whole building. In a London area like South Lambeth, 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.
- Each gap is measured and its substrate and service noted.
- Any non-fire-rated filler is removed.
- The specified fire-rated sealant goes in over any backing its detail requires.
- We hand over a list of locations and products for your records.
Getting ready for the visit
- Let us know if you’ve seen damp or leaks
- On commercial sites, let us know about site rules
- Move anything stored near the joints
Ask for a quote
We don’t publish a price list, because every job is different. Instead, we send you a clear quote for your job. To arrange one, call 0345 464 0079 or send us an email.
Related advice
Workplaces and buildings in South Lambeth
There are hotels and other places to stay in and around South Lambeth. For hotels, a room-by-room programme keeps most rooms in use while the work goes on. Commercial buildings in London often have strict access rules and limited loading, and out-of-hours working is possible to arrange.
If you let a flat or house near Vauxhall station, new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant. For site and facilities teams at buildings such as Herbert Morrison Primary School, gaps opened by contractors for new cabling are a common finding in schools and offices. South Lambeth is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
South Lambeth is about 1 mile south-west of Kennington, in Greater London. Our applicators cover fire rated sealant for homeowners, landlords and businesses in South Lambeth and the surrounding area, as part of our work across Greater London. South Lambeth is one of 764 towns and villages in Greater London we cover.
We cover every part of SW8, SW9 and SW1P for fire rated sealant. Streets in the area include Lett Road, Rita Road and Lorn Road, all of which we cover. South Lambeth sits on or near the A203, which makes travel easy. We also cover Little Portugal (1 mile south), Kennington (1 mile north-east), Oval (1 mile north-east), North Brixton (1 mile south-east) and Stockwell (1 mile south). Within a short drive, we also cover City of Westminster (3 miles north-west), Marylebone (3 miles north), Kensington (4 miles north-west), St Pancras (3 miles north), Shoreditch (4 miles north-east) and Walthamstow (9 miles north-east).
Local landmarks in South Lambeth
We work in homes and buildings around Lambeth Palace Library, Vauxhall Park and Durand Academy, among other places. Other local landmarks include The Canton Arms (less than half a mile south-east) and Platanos College (under half a mile south-east). The nearest railway station is Vauxhall station, about 0.6 miles north. Other landmarks nearby include Gabriel's Wharf (2.2 miles north) and The Gordon Hospital (1.1 miles north-west). The countryside around South Lambeth includes Bellenden Road Nature Garden and Battersea Park Lake.
How the job changes by surface
Door frames
We deal with the gap around the frame, not the door. Doors, seals and closers are for a door specialist and we will mention anything we notice.
Flats and HMOs
Flats and HMOs rely on fire separation between homes and the common parts. We seal the gaps your assessor has identified room by room.
Why deal with it now?
A quick fill with any sealant to hand isn’t fire stopping. A fire-rated product only performs as tested when it’s installed to its tested detail, so both the product and the method matter. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in South Lambeth, the repair is bigger than a sealant job.
The cost reflects the work involved, not a rough estimate. That’s why we ask a few questions first and give you a clear price before we start.
What you get with us
- Approved under the ARBOMaster scheme
- Every job guaranteed for a year
- More than 20 years in sealant work
- Homes, businesses and hotels
Take a look at our cost guide or our reviews.
Landlords, agents and businesses in South Lambeth
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we’ll quote.
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.