The Mastic Doctor team standing beside their branded vans outside an office building
Kent · England

Fire Stopping in Highsted

We carry out fire-rated and intumescent sealing of service penetrations and linear gaps in Highsted. Send photographs or drawings for a fixed quote.

  • Fire stopping installed outside its tested range
  • Openings left by services added after handover
  • Non-fire-rated filler around services
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
South East, London & Scotland
Constructionline member
£5m public liability

Fire stopping for Highsted sites

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

How we handle fire stopping in Highsted

Penetration seals are fire tested to BS EN 1366-3 and linear joint seals to BS EN 1366-4 and the results are classified to BS EN 13501-2. That classification, such as EI 60 or EI 120, belongs to the product in its tested arrangement. Reproducing the tested arrangement on site is the part we take care of. We work on cable penetrations, linear gaps at wall heads and joints between fire-resisting walls and floors, and the usual reasons a site gets in touch are builders’ foam or ordinary silicone in compartment walls and fire seals cut back for extra cables and never reinstated. For commercial sealant work in Highsted, you deal with one contact from quote to sign-off, whether it’s one building or several.

For a smaller site near Highsted, we plan to do all the penetrations in one go, with the specification and photographs sent in advance. We install to the specification and the manufacturer’s guidance, leaving design and sign-off with the designer and building control.

The 12-month guarantee is for workmanship rather than wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we spell out the cover before we begin.

The Mastic Doctor team beside their liveried vans in front of an office building
Place
Highsted (ME9)
Wider area
Kent
Guarantee
12 months on every job
Price
Quoted before any work starts
Telephone
01277 525 020
Updated
3 November 2026

Penetration seals near Highsted

There are several hotels within about 2 miles of Highsted. In hotels, bedroom and corridor walls are usually fire-resisting, so services added in a refit need sealing with the specified product. Central London is about 38 miles from Highsted. Tenant changes on commuter-belt business parks mean regular fit-outs, and new services through compartment walls, and the gaps need sealing with the specified product.

In a hotel such as The George Hotel, 1.4 miles north of Highsted, new pipework or cabling through bedroom and corridor walls needs sealing with the specified product. For a hospital such as Sittingbourne Memorial Hospital, 1.1 miles north of Highsted, penetration sealing is normally phased ward by ward, with infection-control rules agreed first.

Highsted is about 2 miles south of Sittingbourne, in Kent. Any commercial site in Highsted is covered. We work across 931 places in Kent, large and small. We also cover London, around 38 miles from Highsted.

We cover the ME9 postcode districts. For a building on Stockers Hill and Highsted Road or nearby, we can quote for service penetrations. If your building is just outside Highsted, we cover Rodmersham Green (1 mile east), Rodmersham (1 mile east), Tunstall (1 mile west), Bapchild (1 mile east) and Dungate (1 mile south). Further afield, our area takes in Maidstone (10 miles west), Ashford (13 miles south-east), Canterbury (15 miles east), Whitstable (13 miles east), Faversham (6 miles east) and Minster (7 miles north).

Around Highsted

Around Highsted, our work takes us to commercial buildings near Fulston Manor School and Cromers Wood, among other places. The nearest railway station is Sittingbourne station, about 1.6 miles north of the centre. Nearby you will also find Sittingbourne Heritage Museum (1.4 miles north) and Bayford Court (1.7 miles north).

Map of Highsted © OpenStreetMap contributors

Building owners, agents and FMs in Highsted

Whether you’re a managing agent, a property factor or an owner’s representative: send details, get a fixed quote, we seal, guaranteed. We can agree access arrangements and keyholder contacts beforehand.

Hotels, schools, healthcare sites, offices and retail units book us directly too. We plan around the way the building is used, so guests, pupils, patients or staff are disturbed as little as possible.

How the quote is worked out

The price varies from site to site. It mainly depends on:

  • Travel to remote or island sites
  • Induction, permit and paperwork requirements
  • Joint width, depth and condition
  • How much existing material needs removing

Larger quantities, tricky access or phasing all shape the price. Site requirements like inductions and permits play a part as well.

Sending details for a quote

We can often quote from photographs and a few details. Please tell us:

  • Where the site is, with the postcode
  • The asbestos register, for older buildings
  • Your programme or deadline
  • Drawings or a marked-up plan, if available

Let us know the site, the scope and your timescale, and a fixed quote will follow. The easiest way is to phone 01277 525 020 or send photos by email.

What we are called out for in Highsted

Physical damage is another reason seals stop doing their job. Seals get knocked during maintenance, cut back to add a cable or pulled out when services are swapped.

What tends to prompt an enquiry:

  • Unsealed penetrations discovered above suspended ceilings
  • Unsealed openings around new pipes and cables
  • Non-fire-rated filler around services
  • Fire-rated sealant that has cracked or shrunk back

For an estates team at a campus like Canterbury Christ Church University, which lies south-west of Highsted, summer M&E works are usually followed by a round of penetration sealing.

Before you book anyone

  • Will CSCS-carded applicators be on site?
  • Will RAMS and insurance details be available?
  • Are they CHAS accredited or on Constructionline?
  • Their public liability cover

Questions to ask before you appoint anyone

Common questions from Highsted clients

Does your area include sites such as Kent Science Park, near Highsted?

Yes. We cover Highsted and the area around it, including industrial estates, business parks and retail parks such as Kent Science Park. Send details of the unit and the work through our quote form for a quick quote.

Can work at a site such as Canterbury Christ Church University fit around teaching?

Yes. Tell us the term dates, vacation periods and access windows, and we will plan the work around them. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.

How long before the joints can be used?

That comes down to the sealant and the temperature. Some take light use quickly, others need longer to cure, so we’ll confirm the curing time on the day.

How do you deal with asbestos in old sealant?

Some older mastics, especially in pre-2000 buildings, can contain asbestos. We check the asbestos register before cutting out old sealant in an older building, and if asbestos is suspected, work stops until it’s tested. We don’t remove asbestos-containing materials.

Can you tell us what fire stopping our building needs?

No, we don’t design fire stopping. With the designer’s details in hand, we can price the sealant elements.

Can you follow the specification on our project?

Yes. Include it with the drawings when you ask for a quote, and the quote will be based on it, flagging anything that needs clarifying.

Will you just go over the old sealant?

No. Overlaying old sealant is a frequent cause of early failure, so it all comes out first.

What we can’t put right

We seal joints; we don’t mend everything behind them. On its own, sealant can’t deal with:

  • Fire risk assessments, a job for a competent assessor
  • Plastic pipes whose detail calls for a collar or wrap
  • Writing the fire-stopping specification

Not sure which it is? You can call 01277 525 020 or email a schedule or drawings and we’ll tell you honestly.

Surfaces we seal

  • Cable penetrations
  • Small duct penetrations where the tested detail allows
  • Service gaps in risers
  • Joints between fire-resisting walls and floors
  • Pipe penetrations
  • Linear gaps at wall heads

On site: what to expect

We schedule the visit to fit the site hours and access windows you give us. While we’re working, the area stays contained and tidy, and your contact hears from us before we move to the next area. Jobs in and around smaller places like Highsted are typically planned as a single visit, so photographs and measurements up front really help. Then the right materials arrive with us.

  1. The specification and schedule come first, so we know which details apply.
  2. We plan the sequence of floors, risers and voids with you.
  3. Each opening is checked for wall or floor type, service, gap and depth.
  4. Unsuitable material is removed and the opening cleaned.
  5. Backing and fire-rated sealant are installed to the detail and tooled.
  6. We tell you about openings that need a different product.

Before we start on site

  • Tell us which areas need to stay in use
  • Let us know about inductions and permits
  • Share your working hours and any access restrictions

Quotes

Send us photographs, drawings or a joint schedule and a fixed quote comes back to you. If the job needs a look first, we’ll arrange a site visit.

Ask for a quote

Advice

After the work

Every sealant joint needs some looking after, and their life depends on movement, exposure, cleaning and use. Our advice:

  • Check with the data sheet before painting over fire sealant
  • Have penetrations checked while they can still be seen
  • Keep product data and details in the fire safety file
  • Make fire stopping part of every scope that crosses a fire-resisting wall

After every round of M&E works, check that the openings created have been sealed. Building it into each contractor’s sign-off keeps the walls intact.

Make reporting new openings part of every permit to work in service areas. It costs little and catches breaches early.

Accreditations

Trusted. Accredited. Insured.