Greater London · England

Mildmay Fire Rated Sealant

We cover Mildmay for intumescent and fire-rated sealant around gaps, frames and service penetrations. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.

  • Fire stopping disturbed by later work
  • Ordinary sealant used where a fire-rated product was needed
  • Door frames with gaps between frame and wall

Fire rated sealant near Mildmay

Mildmay: your questions answered

Do you work in hotels near Mildmay?

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.

Can parking be tricky for a visit in Mildmay?

In much of London, parking needs planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.

Will you leave a mess?

No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.

Are you an approved applicator?

Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.

Are you insured?

Yes. Full insurance covers our work, and we can confirm the details when we quote.

How long does fire rated sealant take?

A typical job takes a few hours for a handful of gaps, and longer for a whole building, including preparation and clearing up. Your quote will say how long we expect yours to take.

Do you provide details of the products used?

Yes. We record the locations we have sealed and the products used to keep with your fire safety documents.

What does fire rated sealant cost?

Size, access and the old material all affect the cost. Ask us for a quote.

Fire rated sealant in Mildmay

Fire stopping only performs as intended if it’s done to the detail: correct depth, correct backing and a product suited to the surfaces. That detail is what we take care over. We work on pipe & cable gaps, flats & HMOs and plasterboard & masonry, and people most often call us about linear gaps at the head of walls and ordinary sealant used where a fire-rated product was needed.

In London’s blocks of flats, service risers and common parts have pipes and cables passing through walls and floors. For managing agents and building owners in Mildmay, that can mean fire-rated sealant around service openings as well as resealing in shared washrooms and kitchens.

There’s a 12-month guarantee on every job.

Eleven members of the Mr Mastic team standing in front of branded white vans
Where
Mildmay (N1, N16, E8)
Region
Greater London
Cover
A year, on every job
Quote
A clear quote up front
Phone
0345 464 0079
Updated
26 October 2026

DIY sealant or a professional job?

If you do try it yourself, take your time over the 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.

A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.

Quotes for fire rated sealant in Mildmay

The quote reflects the job in front of us. We take into account:

  • The product the joint needs
  • The old material and how stubborn it is
  • When we can work, for business premises
  • The size of the job

What you pay reflects the work, not guesswork. That’s why we ask a few questions first and agree the price before starting.

What we need to know

Photos by email are helpful but not essential. Please mention:

  • Where the job is, and your postcode
  • The problem you’ve noticed
  • Roughly how big the job is
  • Any previous sealing or DIY work

A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email pictures if that is easy.

What fire rated sealant looks like in Mildmay

Commercial buildings in London often have strict access rules and limited loading, so out-of-hours working can be arranged where needed. Mildmay has hotels and guest accommodation in and around it. For hotels, a room-by-room programme keeps most rooms in use while the work goes on.

Managing a site like Newington Green Primary School? Then gaps opened by contractors for new cabling are a common finding in schools and offices. As a London address, Mildmay can be tricky for parking: let us know about parking bays, permits or a driveway. Rented homes near Dalston Kingsland station change hands often, and new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant.

Mildmay is about 1 mile north of Hoxton, in Greater London. Every kind of property in Mildmay can book us for fire rated sealant. The work is guaranteed for a year. We cover 764 towns and villages across Greater London, large and small.

We work across the N1, N16 and E8 postcode area for fire rated sealant. Whether your property is on Dove Road, Essex Road and Burma Road or anywhere close by, our applicators can take on the job. With the A1199 close by, Mildmay is easy for our applicators to reach. Other places close to Mildmay include Newington Green (1 mile north), De Beauvoir Town (1 mile south), Canonbury (1 mile south-west), Kingsland (1 mile south-east) and Highbury (1 mile west). We also work in nearby towns such as London (3 miles south), City of Westminster (4 miles south-west), Marylebone (3 miles south-west), Kensington (6 miles south-west), Walthamstow (4 miles north-east) and Hampstead (4 miles west).

Around Mildmay

Locally, jobs take us to homes and businesses close to City of London Academy Highbury Grove, Highbury Fields and Army and Navy pub and the streets around them. Mildmay has its own railway station: Dalston Kingsland station. Other landmarks nearby include Clowns Gallery-Museum (0.6 miles south-east) and Hackney Walk (1.5 miles east). Green spaces nearby include Gillespie Park and Ludgate Hill.

Map of Mildmay © OpenStreetMap contributors

Why it’s worth doing now in Mildmay

A quick fill with any sealant to hand is not fire stopping. Fire-rated products are tested in set gap sizes, depths and substrates, which is why we match the product and the method to each gap. In a flat in Mildmay, failed sealant seldom stays inside your own four walls: water can reach the neighbours below, and gaps in fire-rated joints affect the whole building.

Every job is a little different, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part, and we’ll explain the quote if you ask.

Why Mildmay customers choose us

  • An ARBOMaster approved applicator
  • 4.9 on Google from 180+ five-star reviews
  • Full insurance on every job
  • Tidy, careful work

Take a look at what affects the cost or what customers say.

Keeping the joints in good condition

Joint life depends on how it’s used and looked after. Here’s what we suggest:

  • Report cracked or damaged seals as soon as you notice them
  • Photograph sealed gaps before they’re covered up
  • Include fire stopping when you schedule refits
  • Never patch a fire seal with standard sealant

Don’t drill through or remove a fire seal without putting it back properly. New services through a sealed wall should include fire stopping in the plan.

Small gaps around services are simple to deal with while there are only a few. Leave them and each new job adds another hole and the job gets bigger.

Surface by surface

Flats and HMOs

Working in occupied flats needs some planning. We agree access to each flat and the common parts before we start so residents know what to expect.

Service penetrations

Different services need different details: metal pipes, cables and plastic pipes aren’t treated the same. We follow the manufacturer’s tested detail for each, and tell you if sealant alone is not the right fix.

For landlords and businesses

For anyone letting property in or around Mildmay, several properties can be quoted together. Send us the addresses and the work at each, and pictures by email help.

Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.

What happens on the day

There’s no need to move everything out, just the space around the work. Everything nearby is protected, and the job takes anything from a few hours to several days, depending on how many gaps there are for a typical job. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Mildmay. It helps if you can point us to a visitor permit or a bay close to the door.

  1. We begin by agreeing the list of gaps from your assessor’s or designer’s requirements.
  2. We measure every gap and note what it’s in and what passes through.
  3. Unsuitable material such as ordinary foam or silicone is cut out.
  4. We fit backing where needed and apply the fire-rated sealant to depth.
  5. We hand over a list of locations and products.

Before we arrive

  • Plan for the work area to be out of bounds to pets and children
  • Mention if the joints have been sealed before
  • On commercial sites, let us know about site rules

Get a quote

Want a quote for fire rated sealant? Please ring 0345 464 0079 or drop us an email and tell us about the job. We’ll explain what we’d do and give you a clear price before any work starts.

Get a price

Advice

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job