Greater London · England

Fire-rated sealant in Seven Sisters, Greater London

Intumescent and fire-rated sealant around gaps, frames and service penetrations in Seven Sisters, with a 12-month guarantee on every job. Call for a quick quote.

  • Gaps flagged on a fire risk assessment
  • Linear gaps at the head of walls
  • Fire seals that have cracked with movement

Trusted fire rated sealant in Seven Sisters

Should I try it myself first?

If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.

Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.

Fire rated sealant in Seven Sisters, done properly

We can work through a building room by room or floor by floor, noting the locations and products as we go. That record is useful for your files and for whoever looks at the building next. Typical jobs include gaps where walls meet ceilings or slabs and damaged fire sealant left by other trades, across flats & HMOs, plasterboard & masonry and linear gaps.

Across London, offices, shops, hotels, student halls and blocks of flats all need sealant work from time to time, from washroom silicone to fire-rated sealant around pipes and cables passing through walls. Out-of-hours working can be arranged where a building in Seven Sisters can’t close.

The work is covered for a year after we finish. If there’s a problem with it, please phone 0345 464 0079 or drop us an email.

Mr Mastic applicators lined up beside the company vans, one holding a sealant gun
Place
Seven Sisters (N15, N17, N16)
Wider area
Greater London
Cover
12 months on all our work
Quotes
A clear price before any work starts
Phone
0345 464 0079
Updated
26 October 2026

How it works

We work through the job in order: protection first, then preparation, sealing and a tidy-up. Typically it takes from a few hours to a few days, depending on the number of gaps and the access and we leave things clean and tidy. In Seven Sisters, flats, stairs and shared entrances are part of the routine. If the building has a concierge, managing agent or access rules, tell us when you book.

  1. We begin by agreeing the list of gaps from your assessor’s or designer’s requirements.
  2. Each gap is measured and its substrate and service noted.
  3. Any non-fire-rated filler is removed and the faces cleaned.
  4. We fit backing where needed and apply the fire-rated sealant to depth.
  5. Every location is recorded with the product used for your records.

Getting ready for the visit

  • Mention if the joints have been sealed before
  • Let us know about parking restrictions
  • Tell us about any water getting in

Getting a quote

We don’t publish a price list, because every job is different. Instead, we give you a clear price for your job. To arrange one, phone 0345 464 0079 or send us an email.

Get a quick quote

Advice

What fire rated sealant looks like in Seven Sisters

Commercial buildings in London often have strict access rules and limited loading, 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, which is often where open fire-stopping gaps are first noticed. We apply fire-rated sealant to the assessor’s or designer’s specification and the product’s tested details.

For buildings such as Church of Holy Trinity, gaps around pipes and cables are worth checking after any building work there. As a London address, Seven Sisters can be tricky for parking: let us know about parking bays, permits or a driveway.

Seven Sisters is about 2 miles west of Walthamstow, in Greater London. Every kind of property in Seven Sisters is covered for fire rated sealant. The work is guaranteed for a year. Across Greater London, we cover 764 places, and Seven Sisters is one of them. Our London page covers work nearby.

We cover every part of N15, N17 and N16 for fire rated sealant. Whether your property is on Ida Road, Elmar Road and Grove Road or a nearby road, we can help. If you are just outside Seven Sisters, we cover South Tottenham (1 mile north), Tottenham Green (1 mile north), St Ann's (1 mile west), Tottenham Hale (1 mile north-east) and West Green (1 mile west). Within a short drive, we also cover London (6 miles south), City of Westminster (6 miles south-west), Marylebone (5 miles south-west), Kensington (8 miles south-west), St Pancras (4 miles south-west) and Shoreditch (4 miles south).

Landmarks near Seven Sisters

Around Seven Sisters, our work takes us to homes and buildings near No.8 Seven Sisters pub, Ada College and Chestnuts Park. You will also find Gladesmore Community School (within half a mile east) and Church of St Andrew (0.8 miles south). Seven Sisters has its own railway station: Seven Sisters station. A little further out are Montfichet's Tower (4.9 miles south) and The Mall Wood Green (1.7 miles north-west). Not far away are Highgate Hill and Woodberry Wetlands.

Map of Seven Sisters © OpenStreetMap contributors

How we quote for fire rated sealant

The price is agreed before any work begins. It takes into account:

  • The number of rooms or windows
  • Whether the work is at height
  • The old material and how stubborn it is
  • The number and length of the joints

What it costs depends on the size of the job, how much old material has to come out and how easy the joints are to reach. We give a clear quote before work begins.

What to tell us for a quote

A few details help us give you an accurate quote. When you ask for a quote, tell us:

  • The rough size of the job
  • The type of property
  • If someone has resealed it before
  • The problem you’ve noticed

The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints.

What we can’t put right

Before booking, it’s worth knowing the limits:

  • Problems with the door itself rather than the gap around the frame
  • Sign-off of the building, which sits with building control or your assessor
  • Openings too large for sealant, which need batts, boards or another system

If you are not sure, just call 0345 464 0079 or send us an email and we will give you a straight answer before booking.

Joints and surfaces we work on

  • Service penetrations
  • Flats & HMOs
  • Pipe & cable gaps
  • Linear gaps
  • Door frames
  • Plasterboard & masonry

Signs you need fire rated sealant in Seven Sisters

Lots of unsealed gaps appear long after the building was completed. Electricians, plumbers and data installers drill through walls and ceilings and the hole round the new service is not always sealed again.

The most common problems we see are:

  • Joints picked up in a fire-stopping survey
  • New service routes left unsealed after building work
  • Seals cut through by electricians, plumbers or data installers
  • Gaps where walls meet ceilings or slabs

Managing a site like Earlsmead Primary School? Then fire-stopping around service openings should be restored whenever new services go in.

Comparing quotes

  • How the colour is chosen
  • How hidden problems are handled
  • How long to leave it before use
  • Whether they’re fully insured

10 questions to ask before booking

Aftercare tips

Aftercare is simple:

  • Flag any open gap you spot round a pipe or cable
  • Include hidden areas like risers in routine checks
  • Allow for resealing whenever new services are run
  • Tell trades working in the building that fire seals must be put back

Look at the sealed gaps as part of your routine walk-rounds. Watch for cracking, gaps or seals that have been disturbed and have them put right.

A gap left open in a fire-resisting wall or floor lets smoke spread in ways the building wasn’t designed for. Closing it is normally a straightforward job.

Different surfaces, different methods

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.

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.

Seven Sisters questions

Do you work for landlords with property near Seven Sisters station?

Yes, rental work is part of what we do. You can call 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before any work starts.

Do you cover Seven Sisters for fire rated sealant?

Yes, Seven Sisters is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or drop us an email and tell us what needs doing.

How do I get a quote for fire rated sealant in Seven Sisters?

It depends on the job, so we quote each one individually. To get one, phone 0345 464 0079 or drop us an email with a short description of the job.

Is there any odour?

It depends on the product. Some smell for a while, some hardly at all.

Can you do several jobs on one visit?

Yes. Tell us about everything you’d like done and we’ll quote it together.

Where are you based?

Our base is Crawley. We work across South East England, London and Scotland.

What do you need from me for a quote?

A short description and the location. If we need more, we’ll ask.

Do I have to be there?

It depends on the job. Inside work needs someone to give us access, while outside work can sometimes be arranged differently.

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