Kent · England

Fire-rated sealant in Swanscombe, Kent

Fire rated sealant for Swanscombe and the surrounding area: the right sealant, proper preparation and a neat finish. Call for a quick quote.

  • Open joints along the top of partitions
  • Door frames with gaps between frame and wall
  • Standard silicone or caulk in a fire-stopping gap

Fire rated sealant for Swanscombe homes and businesses

The process

On the day, we look over the joints with you first, so there are no surprises. We protect the surfaces around the joints before work begins. Most jobs take anything from a few hours to several days, depending on how many gaps there are. Parking around Swanscombe is generally 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. Before starting, we go through the specification or action list with you.
  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 and the faces cleaned.
  4. We fit backing where needed and apply the fire-rated sealant to depth.
  5. We hand over a list of locations and products for your files.

How to prepare

  • For business premises, tell us about site rules or sign-in
  • Plan for the work area to be out of bounds to pets and children
  • Tell us if parking is tricky

How to get a quote

Want a quote for fire rated sealant? Please call 0345 464 0079 or send us an email with a few details. We’ll explain what we’d do and give you a clear price before we start.

Ask for a quote

Related advice

How we handle fire rated sealant in Swanscombe

Later work by other trades often breaks through fire stopping, especially in flats, HMOs, offices and schools. A new cable run or a replaced pipe can leave an open hole behind. Those are the gaps we close, using a tested fire-rated product. If you’re dealing with unsealed gaps where pipes and cables go through a wall and gaps where walls meet ceilings or slabs, we can help, whatever the surface.

If you run a pub, café, guest house or shop in or near Swanscombe, its washrooms and kitchen need the same sealant care as any big building, and fire-rated sealant around service openings should be restored after new pipes or cables go through.

All our work comes with our one-year guarantee, wherever you are in Kent.

The Mr Mastic team in navy uniforms in front of three Mr Mastic vans
Location
Swanscombe (DA9, DA10)
Wider area
Kent
Guarantee
A year, on every job
Price
Quoted before any work starts
Telephone
0345 464 0079
Last updated
26 October 2026

DIY sealant or a professional job?

A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.

The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.

What we’re called out for in Swanscombe

A lot of fire stopping is out of sight: above ceilings, inside risers and behind panels. Out of view, damage sits unnoticed until someone inspects.

Signs it’s time to call us include:

  • Linear gaps at the head of walls
  • Fire seals that have cracked with movement
  • Open gaps behind door architraves
  • Seals cut through by electricians, plumbers or data installers

If you look after a church, hall or community building such as Church of St Mary, service openings in its walls need the right fire-rated sealant, as in any building.

What to look for in a quote

  • Which colour the sealant will be
  • Whether they seal over old material or remove it
  • How long the guarantee is
  • How the surfaces are prepared before sealing

10 questions to ask before you book

Aftercare tips

Looking after new joints is easy:

  • Look in service cupboards and ceiling voids from time to time
  • Get damaged fire seals looked at promptly
  • Make resealing part of every contractor’s brief
  • Ask which product was used before you paint

Avoid covering a sealed gap with anything that isn’t part of the tested detail. Repairs should use a matching fire-rated product. Ask us if you are not sure which product was used.

Leave a fire-stopping gap open and smoke can move through the building much more easily. Closing it is normally a straightforward job.

Fire rated sealant in Swanscombe: 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 work to the specification you are given, installing the product to its tested details.

Letting a property close to Greenhithe for Bluewater station? Then any gap left by new services in shared walls should be closed with a fire-rated product. Managing a site like Knockhall Primary School? Then fire-stopping around service openings should be restored whenever new services go in.

Swanscombe is about 3 miles east of Dartford, in Kent. Wherever you are in the DA9 postcode area, our applicators can take on fire rated sealant. Our Kent coverage runs to 922 places, Swanscombe among them. For nearby work, see our London page.

Our applicators cover all of DA9 and DA10 for fire rated sealant. Whether your property is on London Road, Craylands Square and High Street or a nearby road, our applicators can take on the job. Swanscombe is on the A206 and A226, so it’s easy for us to get to. Neighbouring places we cover for fire rated sealant include Greenhithe (1 mile north-west), Stone (1 mile west), Bean (1 mile south), West Thurrock (2 miles north) and Darenth (2 miles south-west). Larger places within reach include Dartford (3 miles west), Sevenoaks (12 miles south), Gravesend (4 miles east), Northfleet (3 miles south-east), Swanley (6 miles south-west) and Kings Hill (13 miles south).

Around Swanscombe

In Swanscombe, that means homes and buildings near Castle Hill Park, The Ebbsfleet Academy and The Pier Hotel and the streets around them. Swanscombe’s nearest station is Greenhithe for Bluewater station, roughly 0.5 miles west. Well-known places in the area include Stone Castle (0.7 miles south-west) and Bluewater (1 mile south-west). For a walk, there’s Sawyers Lake and Chafford Gorges Nature Park.

Map of Swanscombe © OpenStreetMap contributors

Different surfaces, different methods

Plasterboard walls

Plasterboard partitions are common in flats, offices and conversions. We use a product tested in that kind of wall.

Masonry and concrete

Masonry is dusty and porous, so preparation matters. The gap is cleaned and backed where required.

Questions from Swanscombe

Is Swanscombe in your area for fire rated sealant?

Yes. Our work covers London and the South East, and Swanscombe is part of that. Just phone 0345 464 0079 or drop us an email with a few details of the job.

I let a flat near Greenhithe for Bluewater station. Can you help?

Yes. We work for landlords and agents as well as householders, and several properties can go on one quote. You can phone 0345 464 0079 or email us with the details for a clear quote.

Do you hold any approvals?

Yes. We’re an ARBOMaster approved applicator.

Can you seal over the old sealant?

No, and we never do. It may look fine at first, but the new layer lifts away from the old one. The old sealant has to come out completely.

What do you need from me for a quote?

Only a few details: the address or postcode, what’s wrong and any access issues. Then phone 0345 464 0079 or email us.

Will it make a mess?

Not at all. The area is protected while we work and cleaned up afterwards.

Can I add another job to the visit?

Yes. Just list everything you need.

What does intumescent mean?

Intumescent means it swells when heated, helping close the gap. It’s one type of fire-rated sealant; which product suits depends on the gap, the substrate and the service.

Why it’s worth doing now in Swanscombe

Sealant is not the fix for every opening. Large holes, cable bundles and plastic pipes can call for batts, collars or wraps. If a gap isn’t suitable for sealant, we will tell you. In an older home around Swanscombe, damp from a failed joint can get into timber and plaster, and that’s a much bigger job than renewing the sealant.

We do not show prices on the website, because each job is priced on what it involves. Call for a quick quote and we will talk you through it.

Why Swanscombe customers choose us

  • Tidy, careful work
  • Anti-fungal silicone where joints get wet
  • We’re fully insured
  • Rated 4.9 stars on Google

See what affects the cost or customer reviews.

What affects the cost of fire rated sealant

You will get a clear quote before we start. It’s based on:

  • The number of rooms or windows
  • The amount of work
  • How much old sealant there is and how hard it is to remove
  • Access and height

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

What to tell us for a quote

You don’t need to know the technical terms. It helps if you can tell us:

  • The rough size of the job
  • Pictures of the joints, sent by email
  • What the problem is, such as mould, gaps, leaks or cracking
  • Any previous sealing or DIY work

There’s no standard price list. Instead, we give you a clear quote for your job. To get started, phone 0345 464 0079 or drop us an email.

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