Greater London · England
Fire-rated sealant in Coldharbour, Greater London
Our applicators work in Coldharbour on intumescent and fire-rated sealant around gaps, frames and service penetrations. Old material cut out, joints cleaned and sealed neatly.
- Unsealed gaps where pipes and cables go through a wall
- Damaged fire sealant left by other trades
- Standard silicone or caulk in a fire-stopping gap
Fire rated sealant for homes and businesses in Coldharbour
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 plasterboard & masonry, flats & HMOs and door frames, and the jobs we see most are fire stopping disturbed by later work and door frames with gaps between frame and wall.
London blocks of flats carry pipes and cables through walls and floors in their common parts and service risers. In Coldharbour, building managers may need both fire-rated sealant around those openings and new sealant in shared washrooms.
Big or small, you get the same 12-month guarantee.
- Where
- Coldharbour (E14, SE10, E22)
- Region
- Greater London
- Cover
- A year, on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
What sealant work cannot fix
A few problems are outside what sealant work can do:
- Certifying a building or signing off its fire safety
- Large holes that need a different fire-stopping system
- Deciding what fire stopping a building needs
Not sure which it is? You can ring 0345 464 0079 or send us an email and we will tell you honestly before booking.
What we seal
- Linear gaps
- Pipe & cable gaps
- Flats & HMOs
- Plasterboard & masonry
- Service penetrations
- Door frames
How we quote for fire rated sealant
You will get a clear quote before work begins. It’s based on:
- Any mould that needs treating
- The type of sealant required
- The old material and how stubborn it is
- The number of rooms or windows
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs, plus any working-time requirements on site. Call for a quick quote and we’ll explain what it covers.
Helping us quote
To help us quote quickly, let us know:
- Access, such as stairs, a lift or height
- A few photos by email, if you can
- Whether it’s a home or a business
- Roughly how big the job is
We don’t publish a price list, because every job is different. Instead, your job gets its own clear quote. To get started, phone 0345 464 0079 or drop us an email.
Signs you need fire rated sealant in Coldharbour
Over time, buildings change layout and use. Conversions to flats and HMOs, and office refits, create new walls and new routes for services, with gaps to match.
Look out for these signs:
- New service routes left unsealed after building work
- Gaps around pipes and cables through fire-resisting walls
- Old fire sealant that has split or come away
- Sealant items on a fire risk assessment action list
Letting a property close to Canary Wharf station? Then fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through.
What your quote should include
- How the colour is chosen
- Which sealant they’ll use, and why
- Whether all the old sealant comes out first
- How long the guarantee is
Fire rated sealant around Coldharbour
Commercial buildings in London often have strict access rules and limited loading, so out-of-hours working can be arranged where needed. Workplaces and the common parts of blocks of flats in England need a fire risk assessment under the Regulatory Reform (Fire Safety) Order 2005, and gaps around services are often picked up there. We work to the specification you are given, installing the product to its tested details.
Coldharbour is in London, so parking needs planning: let us know about parking bays, permits or a driveway. Managing a site like Woolmore Primary School? Then gaps opened by contractors for new cabling are a common finding in schools and offices.
Coldharbour is about 2 miles north of Greenwich, in Greater London. For fire rated sealant in and around Coldharbour, please phone 0345 464 0079 or drop us an email for a quick quote. We cover Greater London from our Crawley base. Across Greater London, we cover 764 places, Coldharbour among them.
Every address in E14, SE10 and E22 is within our area for fire rated sealant, from the main roads to the quietest streets. Whether your property is on Canada Square, Simpson's Road and Amsterdam Road or anywhere close by, we can help. With the A1206 and A1261 close by, Coldharbour is easy for our applicators to reach. We also cover the places around Coldharbour: Blackwall (1 mile north-east), London Docklands (1 mile west), Poplar (1 mile north-west), Canary Wharf (1 mile west) and Heron Quays (1 mile west). Within a short drive, we also cover London (4 miles west), City of Westminster (6 miles west), Marylebone (6 miles west), Kensington (8 miles west), St Pancras (5 miles west) and Shoreditch (3 miles north-west).
What’s near Coldharbour
We work in homes and buildings around Canary Wharf College 3, Mudchute Park and Farm and Tower Hamlets College and the streets around them. For rail, the closest station is Canary Wharf station, about 0.5 miles north-west of the centre. Well-known places in the area include Old Royal Naval College (1.3 miles south) and Poplar Hospital (0.6 miles north). Green spaces nearby include Tower Hill and Lavender Pond.
Different surfaces, different methods
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
Service penetrations are where new gaps often appear. We clean out what’s there and reseal to the right depth with backing where the detail needs it.
The process
We keep the work tidy and contained to the area we are working on. Expect the work to take anything from a few hours to several days, depending on how many gaps there are, and we tell you how long to leave it before we go. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. Mention any building rules, key holders or managing agents when you book.
- We start with the survey or action list, checking the size and surfaces of every gap.
- Anything that is not fit for the job comes out, and the gap is cleaned.
- Backing or fill is fitted where the product’s tested detail calls for it.
- The sealant goes in to the depth its detail sets, then it’s tooled off.
- Locations and products are noted so you have them on file.
Getting ready for the visit
- Tell us about any previous sealing or DIY attempts
- Try not to wet indoor joints just before the visit
- For business premises, tell us about site rules or sign-in
Getting a quote
For fire rated sealant in Coldharbour, call 0345 464 0079 or send us an email. Tell us what the problem is and where, and we will agree the price before any work begins.
Advice
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 fails, we can still redo it.
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
Why act early in Coldharbour
For some gaps, sealant isn’t the right answer and another system is needed. Big openings, bundles of cables and plastic pipes may need batts, collars or wraps instead. We will say so if a gap needs something other than sealant. Converted houses in London often have a bathroom above someone else’s living room, so a small leak from tired sealant can mean a neighbour’s ceiling and a lot of disruption. Dealing with it early is far simpler.
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 will have a clear quote before any work starts, so you know where you stand.
Why Coldharbour clients choose us
- Fully insured
- An ARBOMaster approved applicator
- We never seal over old sealant
- 4.9 on Google from 180+ five-star reviews
Take a look at our cost guide and our reviews.
Common questions in Coldharbour
Can you help a landlord with a rental near Canary Wharf station?
Yes, we work for landlords and agents. Just phone 0345 464 0079 or email us and tell us about the property, and we will give you a clear price.
Is parking a problem for a job in Coldharbour?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. The visit is then planned around what’s available.
What do you put in the joint?
Each joint gets the product that suits it. Movement, water and weather all affect the choice, and we’ll tell you what we are using.
What’s the difference between intumescent and fire-rated sealant?
An intumescent sealant expands when it gets hot to help seal the gap. Intumescent sealants are one kind of fire-rated sealant; the right one depends on the gap and what passes through it.
Will you assess my building’s fire safety?
No, assessment isn’t something we do. Once you have a specification or action list from your assessor or designer, we can quote for the fire-rated sealant items.
Will we have a record of what was sealed?
Yes. We note each location and the product that went in.
How long does the job take?
As a guide, most jobs take from a few hours to a few days, depending on the number of gaps and the access. Larger jobs naturally take longer.
Is standard sealant good enough for a fire gap?
No. It looks sealed but won’t perform as fire stopping. Use a product tested for that gap and service.