South East England and London

Fire Rated Sealant in Greater London

Covering 764 places across Greater London for fire rated sealant, with every joint properly prepared, quoted clearly before any work starts and a one-year guarantee.

Fire Rated Sealant across Greater London

Call 0345 464 0079

Get a quick quote

Fire rated sealant in every part of Greater London

Intumescent and fire-rated sealant around gaps, frames and service penetrations. Choose your town from the list to see local details, and get in touch for a quick quote.

Main towns

More services in Greater London

Postcode districts

Our fire rated sealant service in Greater London

Bigger jobs can be worked through in stages, flat by flat or floor by floor, noting the locations and products as we go. It gives you a list to keep with the building’s fire safety documents. Typical jobs include damaged fire sealant left by other trades and unsealed gaps where pipes and cables go through a wall, on flats & HMOs, pipe & cable gaps and plasterboard & masonry.

We work through the job in order: protection first, then preparation, sealing and a tidy-up. Typically it takes a few hours for a handful of gaps, and longer for a whole building and we leave things clean and tidy.

We go through the gaps on your list or survey and check each one’s size and substrate.
We remove any old or unsuitable filler and clean the gap.
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.
Finally, we list where we worked and what we used, for your records.

Pricing in Greater London

What you pay reflects the work, not a rough estimate. That’s why we ask about the job first and give you a clear price before we start.

Why choose Mr Mastic

Full insurance on every job
A 12-month guarantee on all work
Old sealant always removed completely
Experience in homes, commercial sites and hotels

Getting a quote

Getting a quote is simple: let us know the job and the location. A few photos by email make the job easier to understand.

Around London

We work in homes and buildings around St Mary-at-Hill, St George the Martyr and The BFI Reuben Library. You’ll also find Trinity Arms Public House (less than half a mile south-east), Ark Globe Academy (within half a mile south), Charles Dickens Primary School (within half a mile north-west) and Newington Gardens (under half a mile south). There’s a railway station in London itself: Elephant & Castle station. Other landmarks nearby include Surrey Dispensary (within half a mile south-east) and Baynard's Castle (0.9 miles north). Open spaces near London include Bellenden Road Nature Garden and St. James's Park Lake.

Nearby schools include London School of Musical Theatre (within half a mile west)

Where we work in Greater London

Hotels, landlords, schools and businesses across Greater London all have sealant to keep in order. Fire-rated sealant is installed to the manufacturer’s tested details, and washroom sealant is chosen for heavy use.

London and the South East are among the drier parts of the UK, though outside sealant still needs a dry, clean joint, so work across Greater London is planned around the weather.

London: If you look after a building such as Charles Dickens Primary School, service openings in fire-resisting walls need checking after any refurbishment. Rented homes near Elephant & Castle station change hands often, and new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant.

Signs you need fire rated sealant

Gaps also open up as buildings move: cracked or debonded sealant leaves an open route through the wall. Damage from cleaning, knocks and maintenance adds to it.

The problems people normally mention when they call include:

Open holes round services passing through fire walls
Joints picked up in a fire-stopping survey
Standard silicone or caulk in a fire-stopping gap
New service routes left unsealed after building work

Honest limits

To be straight with you, some problems need a different trade:

Big openings where sealant alone is not the tested solution
Problems with the door itself rather than the gap around the frame
Issuing a fire rating or certificate for a building

Why act early?

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.

Questions to ask before you book

What guarantee comes with the work
Is VAT in the price?
What preparation is included
How hidden problems are handled

How the job changes by surface

Plasterboard walls

Service holes in plasterboard are often rough and oversized. Where a hole is bigger than the sealant’s tested range, it needs another approach, and we’ll tell you.

Linear gaps

Linear gaps run along the head of walls, at floor edges and between panels. They’re sealed with a fire-rated sealant over backing where the detail calls for it.

Landlords, agents and businesses in Greater London

Landlords and agents in Greater London can book us as well as householders. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.

If you manage several properties in or around Greater London, several properties can be quoted together. Send us the addresses and the work at each, and pictures by email help.

Greater London: your questions answered

Will we have a record of what was sealed?

Yes. Every gap we seal is listed with the product used.

Will you leave a mess?

We keep the work tidy. Nearby surfaces are protected.

How long does fire rated sealant take?

It depends on the size of the job, but as a guide it takes anything from a few hours to several days, depending on how many gaps there are. We’ll tell you when we quote.

What information do you need?

Just the basics: where it is, what you’ve noticed and how we reach it. After that, simply phone 0345 464 0079 or drop us an email.

How much does fire rated sealant cost in Greater London?

Every job is different, so each one gets its own quote. For a quick quote, call 0345 464 0079 or email us and let us know what needs doing and where.

Will the old sealant be removed?

Yes. We cut out all the old sealant and clean the joint.

Do you do fire sealant around door frames?

Yes. Gaps behind architraves are a common job for us. Doors, seals and closers need a door specialist.