Greater London · England
Fire-rated sealant in Rotherhithe, Greater London
Problem with your fire-stopping gaps in Rotherhithe? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Gaps left after a refit or conversion
- Open joints along the top of partitions
- Ordinary sealant used where a fire-rated product was needed
Common problems we fix in Rotherhithe
Movement in the structure can open gaps too: cracked or debonded sealant leaves an open route through the wall. Damage from cleaning, knocks and maintenance adds to it.
People normally contact us after spotting something like this:
- Ordinary sealant used where a fire-rated product was needed
- Joints picked up in a fire-stopping survey
- Open joints along the top of partitions
- New service routes left unsealed after building work
For site and facilities teams at buildings such as Alfred Salter Primary School, fire-stopping around service openings should be restored whenever new services go in.
Comparing quotes
- What happens if they find a problem under the old sealant
- Whether they’re fully insured
- Who turns up on the day
- Is VAT in the price?
Fire rated sealant in Rotherhithe
Intumescent sealant looks much like any other sealant until it gets hot; in a fire it expands into the joint. The right product depends on the gap size, the substrate and what passes through. We work on plasterboard & masonry, door frames and flats & HMOs, and people most often call us about unsealed gaps around fire door frames and holes left by a change of layout.
In London, a commercial job often starts with access: loading bays, building rules and lifts. For a building in Rotherhithe, we agree timings and access before anything starts.
There’s a 12-month guarantee on every job, whatever its size.
- Where
- Rotherhithe (SE16, SE8, E1W)
- Wider area
- Greater London
- Cover
- A year, on every job
- Quote
- A clear price before we start
- Call
- 0345 464 0079
- Updated
- 26 October 2026
For landlords and businesses
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
How the visit works
Most of a good job is in the preparation, so that’s where we spend the time. Joints are cleaned back and dried before anything new goes in. In total, it normally takes anything from a few hours to several days, depending on how many gaps there are. For a job in Rotherhithe, parking and access are the things to plan: let us know about parking, the floor we’ll be working on and any lift or shared entrance.
- 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.
- The specified fire-rated sealant goes in over any backing its detail requires.
- Every location is recorded with the product used.
Getting ready for the visit
- For indoor joints, keep the area dry beforehand if you can
- Tell us about access, such as stairs, a lift or high-level joints
- Tell us about any previous sealing or DIY attempts
Ask for a quote
We quote each job on its own. Simply phone 0345 464 0079 or send us an email and describe the job.
Read more
How the job changes by surface
Masonry and concrete
Holes through concrete and block are rarely neat. We measure the gap at its widest point to make sure it suits the product.
Door frames
We deal with the gap around the frame, not the door. Doors, seals and closers are for a door specialist and we’ll mention anything we notice.
Quotes for fire rated sealant in Rotherhithe
Jobs vary more than people expect. What affects the quote:
- How easy the joints are to reach
- Mould in or behind the old joints
- How many rooms, windows or areas are involved
- The size of the job
What it costs depends on how much there is to do, how hard the old material is to remove and how easy the joints are to reach. You will have a clear quote before any work starts, so you know where you stand.
What we need to know
To help us quote quickly, please include:
- The type of property
- What’s wrong with the joints now
- The address or postcode of the job
- The rough size of the job
For fire rated sealant in Rotherhithe, ring 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we’ll agree the price before any work begins.
DIY sealant or a professional job?
If you do try it yourself, take your time over the 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.
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
Rotherhithe questions
Do you work for landlords with property near Canada Water station?
Yes, we work for landlords and letting agents. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we’ll send you a clear quote.
Is parking an issue for fire rated sealant in Rotherhithe?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. That way the visit can be planned around it.
Can you give us a record of the work?
Yes. We note each location and the product that went in, so you have it on file.
Do the sealants smell?
There can be a smell while the sealant cures, which fades as it sets. Ventilation helps.
Do you offer different sealant colours?
In most cases you can choose. We will explain which colours are available and agree one before we start.
Where is Mr Mastic based?
We are a Crawley-based firm, with over 20 years’ experience. Our area covers South East England, London and Scotland.
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.
Is it messy?
No. We work neatly, protect the area around the joints and tidy up afterwards.
Nearby places to Rotherhithe
More services for Rotherhithe
Why it’s worth doing now in Rotherhithe
For some gaps, sealant isn’t the right answer and another system is needed. Large holes, cable bundles and plastic pipes can call for batts, collars or wraps. If a gap isn’t suitable for sealant, we’ll tell you. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and by the time it shows on a wall or ceiling in Rotherhithe, the repair is bigger than the sealant job would have been.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
What you get with us
- We leave the area clean and tidy
- Old sealant always removed completely
- Over 20 years’ experience
- Trusted Arbo and Everbuild sealants
Take a look at how sealant jobs are priced or customer reviews.
What fire rated sealant looks like in Rotherhithe
Many London buildings have tight access and loading restrictions, and out-of-hours working is possible to arrange. In England, the Regulatory Reform (Fire Safety) Order 2005 requires a fire risk assessment for workplaces and for the common parts of blocks of flats, and gaps around services are often picked up there. We work to the specification you’re given, installing the product to its tested details.
As a London address, Rotherhithe can be tricky for parking: let us know about parking bays, permits or a driveway. If you let a flat or house near Canada Water station, new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant.
Rotherhithe is about 2 miles south-east of Whitechapel, in Greater London. Homes, rented property, offices and hotels in Rotherhithe can book us for fire rated sealant, old or new, large or small. The work is guaranteed for a year. We cover 764 towns and villages across Greater London, from the larger towns to small villages.
Postcode districts we cover here for fire rated sealant: SE16, SE8 and E1W. If you need fire rated sealant at a property on Bush Road, Gomm Road and Swan Road or anywhere close by, our applicators can take on the job. You will find Rotherhithe on the A200, which makes it straightforward to reach with everything needed for fire rated sealant. Neighbouring places we cover for fire rated sealant include Surrey Quays (1 mile south), Surrey Canal (1 mile south), South Bermondsey (1 mile south-west), Millwall (1 mile south-east) and North Greenwich (1 mile south-east). Within a short drive, we also cover City of Westminster (5 miles west), Marylebone (5 miles west), Kensington (7 miles west), St Pancras (4 miles north-west), Walthamstow (6 miles north) and Hoxton (3 miles north-west).
Local landmarks in Rotherhithe
In Rotherhithe, that means homes and buildings near The Ship York pub, Bacon's College and Russia Dock Woodland, among other places. There’s a railway station in Rotherhithe itself: Canada Water station. Nearby you will also find St Olave's Hospital (0.5 miles west) and Tower of London (1.6 miles north-west). Open spaces near Rotherhithe include St. James's Park Lake and Tower Hill.