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

Fire-rated sealing and fire stopping in Rabbit's Cross, Kent

Fire-rated and intumescent sealing of service penetrations and linear gaps throughout Rabbit's Cross and nearby, carried out by CSCS-carded applicators. Fully insured and CHAS accredited.

  • Unsealed openings around new pipes and cables
  • Non-fire-rated filler around services
  • Open linear gaps along the top of fire-resisting walls
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
South East, London & Scotland
CHAS accredited
£5m PL insurance

Fire stopping for Rabbit's Cross sites

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

From enquiry to sign-off

Where the site stays busy, we agree a sequence with your contact so the disruption stays in one area at once. Each area is protected, prepared and sealed, then reopened once the sealant allows before we move to the next. Smaller jobs around Rabbit's Cross can be grouped with others nearby. You will have a fixed quote before work starts.

  1. We ask for the product and detail your designer has specified.
  2. Openings are measured and grouped by detail.
  3. Old or wrong materials are cut out.
  4. Mineral wool or other backing is fitted where required.
  5. We gun the sealant in to the specified depth around each service and tool it.
  6. Completed areas are checked with you, with the records agreed when we quoted.

Before we start on site

  • Confirm the product named in the specification
  • Warn occupants and staff about the work
  • Let us know about inductions and permits

Getting a fixed quote

We quote a fixed sum against the scope you give us, so you know the figure before anyone is on site. To start the process, give us a call on 01277 525 020 or email us.

Get a quick quote

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How we handle fire stopping in Rabbit's Cross

No fire sealant works on its own: its test evidence covers one product in one kind of wall or floor, with set services, gaps, depths and backing. We match each opening to that detail before any sealant goes in, and raise it with you if it falls outside. We work on pipe penetrations, linear gaps at wall heads and cable penetrations, and what we are called in for most is improvised or mixed-product fire seals and fire seals cut back for extra cables and never reinstated. A single leaking joint is often how a building in Rabbit's Cross first comes to us: we look at the rest while we’re there and tell you what we find.

A job near Rabbit's Cross is typically planned around one visit, 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.

Every job we finish is backed by a 12-month workmanship guarantee, in Rabbit's Cross as everywhere else we work. If a joint we sealed fails because of how it was installed, we come back and put it right.

Mastic Doctor team members lined up next to their branded vans outside an office building
Place
Rabbit's Cross (ME17)
Wider area
Kent
Cover
A 12-month guarantee
Quotes
Fixed quote, scope in writing
Phone
01277 525 020
Last updated
3 November 2026

Common problems we fix in Rabbit's Cross

A common fault is a product that was never fire-rated in the first place: expanding foam or a general-purpose sealant pushed into a gap to tidy it. The opening looks sealed but has no fire test evidence behind it and has to be removed.

Clients usually get in touch after noticing something like this:

  • Damaged fire seals in risers and voids
  • Unsealed penetrations discovered above suspended ceilings
  • Seals that don’t match their tested detail
  • Fire-stopping items raised at inspection or handover

Where a unit on an estate such as Orchard Industrial Estate, which lies north of Rabbit's Cross, has fire-resisting walls between offices and warehouse, any new service through them should be sealed to the tested detail.

Comparing quotes

  • How they’ll work around occupants
  • Their approach to joint depth and backing
  • Who will actually carry out the work
  • Do they follow the manufacturer’s priming guidance?

Our contractor checklist

What we can’t put right

Some faults sit outside our scope, and we point that out rather than sealing over them:

  • Writing the fire-stopping specification
  • Construction that lacks the fire resistance the seal relies on
  • Signing off or certifying a building’s fire stopping

Not sure which it is? You can call 01277 525 020 or email drawings and photos and we will tell you honestly.

Joints and surfaces we work on

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

General trades versus a specialist

Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.

General builders and handymen seal joints, but it isn’t their main trade. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint, which is what makes a joint last.

Maintenance after handover

Cleaning and maintenance staff play a part too. Share these points with them:

  • Don’t let anyone top up a fire seal with the wrong product
  • Include service cupboards in routine inspections
  • Keep product data and details in the fire safety file
  • Check with the data sheet before painting over fire sealant

After the work, brief anyone else working in the area that the openings are now sealed. If a seal has to be opened for a new service, it should be reinstated to the same detail using the same product.

Specify fire stopping early on refits, not as an afterthought. Details can then be picked to suit the actual pipes, cables and ducts, and installation follows the programme.

Common questions from Rabbit's Cross clients

Can you work on a hospital site such as Oakwood Hospital?

Yes. We work in healthcare settings as well as offices and schools. The estates team’s permit system and infection-control rules come first, and the work is planned around them.

Will you take on work at estates like Orchard Industrial Estate, close to Rabbit's Cross?

Yes. Our area takes in Rabbit's Cross and its surroundings, with estates and business parks such as Orchard Industrial Estate included. Photos and a short description are enough for a first look.

Can you tell us what fire stopping our building needs?

No, that isn’t our role. With the designer’s details in hand, we can price the sealant elements.

Do you seal openings left by new services?

Yes. Share the penetration schedule and product details. Work can run area by area behind the M&E trades.

Can the sealant be colour-matched?

In many cases, yes. Many products come in a range of standard colours, and matching to RAL references or surrounding finishes is often possible. We will confirm the colours available for the specified product.

What do you charge?

We don’t publish prices, as every site differs. With photos or drawings, we can give you a fixed quote.

How long does a job like this take?

That varies with the scale of the job, but the work typically takes anything from one day to a planned run of visits, depending on the number of seals and the access. Larger or phased jobs take longer, and we will give you a timescale with the quote.

Fire stopping around Rabbit's Cross: what changes locally

Rabbit's Cross lies roughly 35 miles out from central London. Office refits around the commuter belt bring new cabling through fire-resisting walls, and the gaps need sealing with the specified product. In England, Approved Document B covers fire stopping of openings and penetrations. The national BS 476 classes are due to drop out of it from 2 September 2029, leaving the European BS EN 13501-2 route, subject to transitional arrangements. Either way, we install the specified product to its tested detail.

On a hospital site such as Oakwood Hospital (5.7 miles north-west of Rabbit's Cross), fire-rated sealant goes in where the specification calls for it, with the work planned around the estates team’s permits.

Rabbit's Cross is about 5 miles south of Maidstone, in Kent. Anywhere in ME17, it works the same way: details in, fixed quote out, then sealing and a 12-month guarantee. We work across 931 places in Kent, from busy centres to rural villages. London is covered too, some 35 miles away.

Anyone looking for fire stopping in ME17 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. Just outside Rabbit's Cross, we also work in Cross-at-Hand (1 mile south), Devil's Den (1 mile east), Underling Green (2 miles west), Farthing Green (2 miles east) and St Ann's Green (2 miles south-west). A short drive away, we cover Maidstone (5 miles north), Ashford (14 miles east), Sittingbourne (13 miles north-east), Royal Tunbridge Wells (13 miles west), Tonbridge (12 miles west) and Kings Hill (8 miles north-west).

Around Rabbit's Cross

The nearest railway station is Staplehurst station, about 1.8 miles south. Well-known places in the area include South East Romany Museum (2.4 miles south-west) and Oakwood Hospital (5.7 miles north-west).

Map of Rabbit's Cross © OpenStreetMap contributors

Quoting for work in Rabbit's Cross

Sealant work doesn’t have a standard rate, since sites vary so much. What we look at:

  • Specialist products, such as fire-rated or hygienic sealants
  • Backing rod, priming and other preparation
  • How accessible the joints are
  • Site requirements such as inductions and permits

Quantities, awkward access and phased working all shape the price. Site requirements like inductions and permits play a part as well.

What to include in your enquiry

A few photographs plus some basic facts will normally do. Please tell us:

  • Clear photos of the problem areas
  • Asbestos survey details if the building is older
  • The type of building and who uses it
  • Anything awkward about access or site hours

Specifications, drawings and tender packages are welcome with any enquiry, and we’ll price the work to it. Smaller jobs need nothing more than photographs and a few notes.

Accreditations

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