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

Fire-rated sealing and fire stopping in Breach, Kent

Sealant work in Breach for main contractors, managing agents and facilities managers: fire-rated and intumescent sealing of service penetrations and linear gaps, quoted at a fixed price.

  • Fire-rated sealant that has cracked or shrunk back
  • Unsealed openings around new pipes and cables
  • Fire stopping installed outside its tested range
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
CHAS accredited
Fully insured: £5m PL

Need fire stopping in Breach?

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

Common problems we fix in Breach

Openings in fire-resisting walls usually appear when services are added or changed. New cabling, rerouted pipework or a data route drilled through a riser can leave the hole behind. Across several fit-outs, the openings add up.

Typical triggers for a call:

  • Seals disturbed by maintenance and left open
  • Unsealed penetrations discovered above suspended ceilings
  • Openings left by services added after handover
  • Penetration schedules that need working through

For a unit at a site such as Newington Industrial Estate, 0.6 miles to the south of Breach, new power or data runs between office and warehouse can breach a compartment wall.

Questions to ask before you book

  • Their pre-qualification and accreditations
  • Which product they’ll use, and why it suits the joint
  • Will CSCS-carded applicators be on site?
  • What level of public liability insurance do they hold?

How to choose a sealant contractor

Fire stopping in Breach

A lot of fire-stopping work comes after M&E installation, a refit or a tenant fit-out. New cable runs, replaced pipework and extra data routes all punch holes in compartment walls. Those on your schedule are closed with the specified product. We work on pipe penetrations, service gaps in risers and joints between fire-resisting walls and floors, and the failures we’re asked to look at most are fire stopping installed outside its tested range and expanding foam used as fire stopping. One point of contact handles commercial sealant work in Breach from the first photographs to the final walk-round, whether it’s one building or several.

Smaller places such as Breach still have buildings with fire-resisting walls and floors: schools, halls, care homes and commercial conversions. Any service penetration through those walls should be closed with the specified product, set out as its test evidence shows.

Every job is signed off with a 12-month guarantee. The promise is simple: if the work we did fails within twelve months, we return to fix it.

Place
Breach (ME9)
Wider area
Kent
Guarantee
A 12-month guarantee
Quotes
Fixed quote, scope in writing
Phone
01277 525 020
Last updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Doing it in-house

Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and we will confirm the paperwork you need with the quote.

For most general trades, sealant is a sideline. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint.

How the job changes by surface

Masonry and concrete

Openings through concrete vary from tidy cores to rough break-outs. The gap is measured at the widest point so we know it sits within the tested range, and any outside it are raised with you.

Metal pipes

Sealant details often cover copper and steel pipework. Pipe diameter, annular gap, sealant depth and any pipe insulation all have to match the detail.

Penetration seals near Breach

Breach lies roughly 34 miles out from central London. Offices around the capital are refitted often, and the cabling that follows can breach fire-resisting walls, and the gaps need sealing with the specified product. In England, Approved Document B covers fire stopping of openings and penetrations. From 2 September 2029, BS 476 references are being taken out of Approved Document B, leaving BS EN 13501-2 classification as the route, subject to the Government’s transitional arrangements. Our part stays the same: the specified product, installed to its tested detail.

Wherever services are added at a hospital such as Medway Maritime Hospital, 5 miles to the west of Breach, the compartment line has to be made good with the specified product. In a school such as Newington Church of England Primary School, fire-rated sealant goes in around service penetrations where it is specified.

Breach is about 3 miles east of Gillingham, in Kent. We send applicators to Breach for service penetrations. Our Kent coverage takes in 931 places, large and small. For work in that direction, see our London page.

Postcode districts covered here: ME9 for service penetrations. Close to Breach, our area also takes in Newington (1 mile south-east), Lower Hartlip (1 mile south-west), Lower Halstow (1 mile north-east), Upchurch (1 mile north) and Moor Street (1 mile west). Bigger towns within reach include Maidstone (9 miles south-west), Sittingbourne (4 miles east), Gravesend (13 miles west), Faversham (11 miles east), Northfleet (14 miles west) and Minster (8 miles north-east).

Local landmarks in Breach

Recent enquiries here include premises near Berengrave Chalk Pit, The Wheatsheaf pub and Leigh Academy Rainham. Breach’s nearest station is Newington station, roughly 0.8 miles south-east of the centre. Nearby you’ll also find Court Hall Museum (3.5 miles east) and Medway Maritime Hospital (5 miles west). For a walk, there’s Bishop Saltings.

Map of Breach © OpenStreetMap contributors

Diagnose, treat, sign off

On arrival, we report to your site contact and complete whatever induction the building runs. Floors, finishes and fittings next to the joints are covered before anything is cut or cleaned, with the work itself normally taking longer where risers, ceiling voids or occupied floors have to be worked through in sequence. For work around Breach, we aim to finish in one visit, so photographs and measurements up front really help. That way the right products come on the day.

  1. First we go through the drawings, schedule or specification for the seals.
  2. Every penetration is compared with its detail: wall or floor type, service, gap size and depth.
  3. Anything that doesn’t belong in the opening, such as expanding foam or general-purpose filler, is removed.
  4. Mineral wool or other backing goes in wherever the detail asks.
  5. Fire-rated or intumescent sealant is gunned in to the specified depth, then tooled.
  6. If an opening needs something other than sealant, we tell you instead of improvising.

Getting the site ready

  • Share the asbestos register for older buildings
  • Tell us which areas need to stay in use
  • Tell us your opening times and when work is allowed

Request a quote

A good quote starts with a clear picture: the joints involved, quantities, access and the product called for. Share whatever details you have and we’ll fill any gaps with a visit.

Ask for a quote

Advice

Questions about Breach

Is hospital work, at somewhere like Medway Maritime Hospital, something you do?

Yes, provided the work is planned with the site’s estates team. Work is phased so departments keep running, under the site’s own rules.

Is Breach too small for you to travel to?

Not at all. Breach is within our area. We work across Greater London and the South East. Send photographs and a list of what needs doing, and we’ll plan the job to need as few trips as possible.

Are you fully insured?

Yes. Mastic Doctor is fully insured, public liability included.

Can you reseal penetrations after our M&E works?

Yes. Send the schedule or marked-up drawings and the specified product details and a fixed quote follows. Work can run area by area behind the M&E trades keeping pace with the programme.

Do you approve fire stopping for building control?

No. We don’t certify or sign off fire stopping, and we hold no third-party fire-stopping installer certificate. We work to the specification and the manufacturer’s installation guidance, and any records you need can be confirmed with the quote.

Does weather matter for sealant work?

It can, for external work. Wet joints and cold, damp or frosty conditions stop the sealant bonding properly, so external work may be moved if conditions aren’t right. Internal work is far less affected.

Is the work guaranteed?

Yes. It runs for twelve months and covers how we prepared and sealed the joints, though not damage or work by other trades.

Why it’s worth doing now in Breach

The longer openings stay, the more there tend to be: every new cable or pipe adds another. A schedule that is dealt with regularly stays manageable, rather than turning into a full building survey and reseal. For buildings around smaller places like Breach, water damage can go unnoticed for longer, especially where a building isn’t used daily, so a failed joint can leak for a while before anyone sees it. Renewing joints in good time avoids the problem.

The product called for affects the cost, as does the preparation each joint needs, from cutting out to priming and backing rod. Access, phasing and site rules also count.

Why appoint us

  • Sealing commercial buildings since 2005
  • Constructionline member
  • One contact handling all your sites
  • CHAS accredited

Read how commercial sealant jobs are priced and how we’re accredited.

How the quote is worked out

There’s no standard rate for sealant work, since sites vary so much. What we take into account:

  • Any access equipment needed
  • Phasing around occupants
  • Quantities, in metres or numbers
  • The site’s rules and procedures

There’s no price list, since every building and every scope is different. For a fixed figure, call for a quote and we’ll price your job on its own details.

What we need to price the job

The more we know, the firmer the quote. Helpful details to send:

  • How the joints are reached, and at what height
  • What the building is and how it’s used
  • Approximate linear metres or a joint schedule
  • Whether an asbestos survey exists

Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to give us a call on 01277 525 020 or send photos by email with what you know.

Accreditations

Trusted. Accredited. Insured.