Kent · England

Fire Rated Sealant in Northdown

Intumescent and fire-rated sealant around gaps, frames and service penetrations for homes and businesses in Northdown and across Kent. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.

  • Fire stopping disturbed by later work
  • Open gaps behind door architraves
  • Open holes round services passing through fire walls

Book fire rated sealant in Northdown

About our fire rated sealant in Northdown

Deciding which gaps need fire stopping isn’t our role; your assessor, designer or building control sets that out. Our part is applying the specified sealant carefully, to the right depth and with the right backing. We work on linear gaps, door frames and plasterboard & masonry, and people most often call us about unsealed gaps where pipes and cables go through a wall and fire stopping disturbed by later work.

Around a place like Northdown, halls, schools and small businesses all have washrooms and kitchens used by many people. Sealant and fire-rated joints there matter as much as in any larger building.

We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we’ll sort it.

Location
Northdown (CT9, CT10)
Region
Kent
Guarantee
One year on every job
Price
A clear price before any work starts
Phone
0345 464 0079
Page updated
26 October 2026
The Mr Mastic team in navy uniforms in front of three Mr Mastic vans

Surface by surface

Masonry and concrete

Masonry is dusty and porous, so preparation matters. We brush and vacuum the gap and use backing where the detail needs it before the sealant goes in.

Plasterboard walls

Service holes in plasterboard are often rough and oversized. Gaps that are too big for sealant alone need a different detail.

What we can’t put right

Honest advice matters more to us than a booking, so here’s what new sealant won’t do:

  • Large holes that need a different fire-stopping system
  • Problems with the door itself rather than the gap around the frame
  • Walls or floors that weren’t built to resist fire

Not sure which it is? You can call 0345 464 0079 or send us an email and we’ll tell you honestly before you book.

Where we work in Northdown

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

What affects the quote in Northdown

You will get a clear quote before work begins. It takes into account:

  • How much there is to do
  • Working hours on commercial sites
  • Mould in or behind the old joints
  • How many rooms, windows or areas are involved

The cost reflects the work involved, not guesswork. That’s why we ask a few questions first and agree the price before starting.

Helping us quote

When you contact us, these details help:

  • Any access issues, like height or stairs
  • Whether it has been sealed before
  • The type of property
  • Roughly how big the job is

Every job is quoted individually, so start by telling us what you need. Simply call 0345 464 0079 or send us an email and describe the job, and photos are welcome.

Work for landlords, hotels and businesses

Mouldy or split sealant often shows up at the end of a tenancy. We can quote for more than one property at once.

Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.

Commercial buildings in Northdown

If you run a hotel, guest house or holiday let in a coastal place like Northdown, heavy use in the busy months is hard on washroom and kitchen sealant, and any building work there should leave fire-rated joints made good. 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 apply fire-rated sealant to the assessor’s or designer’s specification and the product’s tested details.

If you look after a church, hall or community building such as St Philip, service openings in its walls need the right fire-rated sealant, as in any building. For landlords with property near Broadstairs station, new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant.

Northdown is about 2 miles east of Margate, in Kent. Our applicators cover fire rated sealant for homes and businesses in Northdown and nearby, as part of our work across Kent. Our Kent coverage runs to 922 places, and Northdown is one of them. We also work in Chelmsford, around 47 miles away.

Jobs for fire rated sealant in CT9 and CT10 works the same way as everywhere else we cover. You’ll find streets such as Old Road, Holly Lane and Green Lane, all of which we cover. We also cover Palm Bay (1 mile north-west), Cliftonville (1 mile west), Kingsgate (1 mile east), St Peter's (1 mile south) and Broadstairs (2 miles south). Larger places within reach include Ramsgate (3 miles south), Deal (12 miles south), Herne Bay (12 miles west), Walmer (13 miles south), St Lawrence (3 miles south) and Newington (3 miles south-west).

Near you in Northdown

In Northdown, that means homes and buildings near Captain Digby Inn and Dane Court Grammar School. The closest station to Northdown is Broadstairs station, roughly 1.8 miles south of the centre. A little further out are Westwood Cross (2.1 miles south-west) and Queen Elizabeth the Queen Mother Hospital (1.4 miles south-west).

Map of Northdown © OpenStreetMap contributors

Northdown: your questions answered

Do you work for landlords with property near Broadstairs station?

Yes. We work for landlords and letting agents as well as householders. Just phone 0345 464 0079 or send us an email with the address and what needs doing, and we will send you a clear quote.

Do you cover smaller places like Northdown?

Yes, Northdown is covered. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.

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

There’s no set price, as it depends on the job: its size, the old material, access and the product needed. You will get a clear quote before any work starts.

Should I try DIY first?

Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. If it doesn’t work out, we can redo it.

Is it OK to seal over old sealant?

No, it won’t last. It can look neat for a few weeks, but the new bead soon lifts. The old sealant has to come out completely.

Can I use normal mastic around a pipe through a fire wall?

No. It looks sealed but won’t perform as fire stopping. Use a product tested for that gap and service, or ask us to do it.

Is it messy?

We keep the work tidy. We protect what’s around the joints, and we clear up when we’re done.

Can you fill the gap behind a fire door frame?

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

Looking after it afterwards

So the new joints stay in good condition:

  • Take pictures of fire stopping before ceilings or boxing go back
  • Never patch a fire seal with standard sealant
  • Flag any open gap you spot round a pipe or cable
  • Ask which product was used before you paint

Include fire stopping in your regular building checks. Look for cracks, gaps or sealant that has been cut or pulled out and get them seen to.

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.

What happens on the day

On the day, there’s very little for you to do. Show us the job and we will take it from there. The job generally takes a few hours for a handful of gaps, and longer for a whole building. Parking around Northdown is usually easier than in a town centre, but mention any lanes, gates or long drives. If the job is outside, tell us about side access and how high the joints are.

  1. First we work through your list or survey, measuring each gap and checking what it’s formed in.
  2. Anything that isn’t fit for the job comes out, and the gap is cleaned.
  3. Where the tested detail needs backing or fill, we fit it.
  4. The sealant goes in to the depth its detail sets, then it’s tooled off.
  5. Locations and products are noted so you have them on file.

Preparing for the visit

  • Tell us about access, such as stairs, a lift or high-level joints
  • Mention any sign-in or site rules at work premises
  • For indoor joints, keep the area dry beforehand if you can

Ask for a quote

Getting a quote is simple: let us know the job and the location, and roughly how big it is. Photos by email help us understand the job, and we will come back to you with a quote.

Get a quick quote

Advice

When to call us in Northdown

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.

These are the problems we’re asked about most:

  • Cracked or shrunken fire-rated sealant
  • New service routes left unsealed after building work
  • Gaps filled with a product that isn’t fire-rated
  • Linear gaps at the head of walls

For site and facilities teams at buildings such as Palm Bay Primary School, gaps opened by contractors for new cabling are a common finding in schools and offices.

Questions to ask before booking

  • What preparation is included
  • How long the guarantee is
  • Is the old sealant removed completely?
  • Which colour the sealant will be

Choosing a sealant specialist

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