Greater London · England

Fire Rated Sealant in Neasden

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

  • Gaps where walls meet ceilings or slabs
  • Gaps around pipes and cables through fire-resisting walls
  • Open gaps behind door architraves

Need fire rated sealant in Neasden?

Fire rated sealant in Neasden

Deciding which gaps need fire stopping isn’t our role; that comes from your fire risk assessor, designer or building control. Our part is applying the specified sealant carefully, to the right depth and with the right backing. We work on door frames, plasterboard & masonry and linear gaps, and people most often call us about linear gaps at the head of walls and damaged fire sealant left by other trades.

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. Where a building in Neasden needs to stay open, work can be planned outside normal hours.

You get a 12-month guarantee, the same in Neasden as everywhere else we work.

The Mr Mastic team in navy uniforms in front of three Mr Mastic vans
Location
Neasden (NW10, NW2, NW9)
Wider area
Greater London
Cover
A year, on every job
Quote
A clear quote up front
Call
0345 464 0079
Page updated
26 October 2026

Can I do it myself?

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.

Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.

What the job involves on each surface

Door frames

Frame gaps are generally hidden behind the architrave. We seal any open gap to the product’s tested details.

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 will flag it.

Fire rated sealant in Neasden: local notes

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 apply fire-rated sealant to the assessor’s or designer’s specification and the product’s tested details. Commercial buildings in London often have strict access rules and limited loading, so out-of-hours working can be arranged where needed.

For buildings such as St Catherine's Church Neasden with St Paul, gaps around pipes and cables are worth checking after any building work there. For site and facilities teams at buildings such as Northview Junior and Infant School, gaps opened by contractors for new cabling are a common finding in schools and offices.

Neasden is about 5 miles north-west of City of Westminster, in Greater London. Neasden gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. We cover 764 towns and villages across Greater London, large and small. For nearby work, see our London page.

All of NW10, NW2 and NW9 is covered for fire rated sealant. You’ll find streets such as Dog Lane, High Road and Ilex Road, and we cover them all. Neighbouring places we cover for fire rated sealant include Brent Park (1 mile west), Church End (1 mile south), Willesden (1 mile south-east), Dollis Hill (1 mile north-east) and Willesden Green (1 mile south-east). Further out, we also cover London (8 miles south-east), City of Westminster (5 miles south-east), Marylebone (5 miles south-east), Kensington (4 miles south-east), St Pancras (6 miles east) and Shoreditch (8 miles east).

What’s near Neasden

In Neasden, that means homes and buildings near Gladstone Park, The Swaminarayan School and Crest Boys' Academy. The nearest railway station is Brent Cross West station, roughly 1.3 miles north-east of the centre. Well-known places in the area include Neasden Hospital (0.7 miles south-west) and London Designer Outlet (1.7 miles west). The countryside around Neasden includes Westbere Copse and Castlebar Hill.

Map of Neasden © OpenStreetMap contributors

How we quote for fire rated sealant

Your quote is based on your job. We look at:

  • The number of rooms or windows
  • Which sealant suits the joint
  • Any mould that needs treating
  • The amount of work

The cost depends on the size of the job, how much old material has to come out and how easy the joints are to reach. You will have a clear quote before any work starts, so you know where you stand.

Helping us quote

To help us quote quickly, please include:

  • Whether it has been sealed before
  • The problem you’ve noticed
  • Pictures of the joints, sent by email
  • How we’d reach the joints

Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. When it suits you, call 0345 464 0079 or email us.

What we’re called out for in Neasden

Movement in the structure can open gaps too: a seal that cracks or pulls away leaves a path for smoke. Damage from cleaning, knocks and maintenance adds to it.

Any of these means the joints need attention:

  • Ordinary sealant used where a fire-rated product was needed
  • Gaps flagged on a fire risk assessment
  • Open joints along the top of partitions
  • Gaps around pipes and cables through fire-resisting walls

Rented homes near Brent Cross West station change hands often, and any gap left by new services in shared walls should be closed with a fire-rated product.

Before booking anyone

  • How long the guarantee is
  • How hidden problems are handled
  • What the cure time is
  • Who does the work, and how experienced they are

How to choose a mastic man

How it works

There isn’t much for you to do on the day. Show us the job and we will take it from there. The work itself takes from a few hours to a few days, depending on the number of gaps and the access, including the tidy-up. In Neasden, as in most of London, parking needs a little planning. A visitor permit or a nearby bay makes the visit run more smoothly.

  1. We go through the gaps on your list or survey and check each one’s size and substrate.
  2. Anything that is not fit for the job comes out, and the gap is cleaned.
  3. We put in whatever backing or fill the product detail specifies.
  4. The sealant goes in to the depth its detail sets, then it’s tooled off.
  5. Finally, we list where we worked and what we used, for your records.

How to prepare

  • Keep children and pets away from the work area
  • For indoor joints, keep the area dry beforehand if you can
  • Let us know about earlier repairs to the joints

How to get a quote

Asking for a quote is easy: let us know the job and the location. Photos by email help us understand the job, and we’ll take it from there.

Get a price

Read more

What we can’t put right

We will not take on work that will not last, so these are the limits:

  • Fire doors that need new seals, closers or hardware
  • Construction that does not provide fire resistance on its own
  • Certifying a building or signing off its fire safety

If in doubt, call 0345 464 0079 or send us an email and we’ll say what we think before booking.

What we seal

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

Questions from Neasden

Do you work in hotels near Neasden?

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.

Is parking an issue for fire rated sealant in Neasden?

Parking in Neasden, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.

What do you need from me for a quote?

Where the job is, what the problem is and roughly how big it is. If you can, email a few photos.

Do you guarantee your work?

Yes, always. Each job is guaranteed for twelve months.

Where are you based?

We’re a Crawley-based firm. Our area covers South East England, London and Scotland.

Will you leave a mess?

We keep the work tidy. Nearby surfaces are protected, and we clear up when we are done.

What fire rating will the seal have?

That is not something we state or certify. Your specification sets the requirement, and we fit a product whose tested details meet it with a record of each location.

Can you quote for more than one area?

Yes. More than one area can be quoted together.

Aftercare tips

Aftercare is simple:

  • Include fire stopping when you schedule refits
  • Check risers, ceiling voids and cupboards during building checks
  • Check whether a sealant can be painted before decorating over it
  • Keep the record of products and locations with your fire safety documents

Leave the sealant to cure fully before painting near it. Some fire-rated sealants can be painted and some can’t and we’ll tell you which one you have.

Leave a fire-stopping gap open and smoke can move through the building much more easily. Sealing it early is a simple step to take.

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