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

Fire-rated sealing and fire stopping in Greenhill, Kent

Fire stopping in Greenhill, backed by over 20 years in commercial sealing. Fully insured, with a 12-month guarantee.

  • Service penetrations left open after M&E works
  • Old intumescent sealant that has split away
  • Hidden openings found during inspections
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
Scope agreed and priced before anything starts.
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
CHAS & Constructionline
£5m public liability

Fire stopping across Greenhill

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

Compartments and services around Greenhill

Central London is about 53 miles from Greenhill. Business park offices in the commuter belt are refitted as tenants change, and each fit-out adds services through compartment walls. A number of hotels sit less than 2 miles from Greenhill. A hotel refit often runs new services through compartment walls between bedrooms and corridors, and each opening needs the specified seal.

Theatres, wards and plant rooms at sites like Queen Victoria Memorial Hospital, 1.7 miles to the east of Greenhill, all have compartment walls crossed by services. Tenant changes at parks like Eddington Business Park, 0.8 miles to the east of Greenhill, bring new data and services, and openings through fire-resisting walls need the specified seal.

Greenhill is about 1 mile south-west of Herne Bay, in Kent. We cover commercial sites throughout Greenhill. Across Kent, 931 places are covered, including Greenhill. For work in that direction, see our London page.

Commercial sites across CT6 are covered for service penetrations. We cover commercial and managed buildings on Love Street Close, Herne Drive and Matthews Road and the roads nearby. Sites close to Greenhill are covered too, including Eddington (1 mile east), Bullockstone (1 mile south-east), Herne Common (1 mile south-east), Herne Bay (1 mile north-east) and Herne (1 mile south-east). Further afield, our area takes in Canterbury (6 miles south), Margate (12 miles east), Ramsgate (13 miles east), Broadstairs (14 miles east), Whitstable (3 miles west) and Faversham (10 miles west).

Around Greenhill

Around Greenhill, our work takes us to commercial buildings near The Share And Coulter Public House, Curtis Wood and Herne Bay High School. For rail, the closest station is Herne Bay station, roughly 0.6 miles north-east of the centre. Nearby you’ll also find Whitstable and Tankerton Hospital (2.4 miles west) and Tankerton Castle (3.1 miles west). For a walk, there’s West Blean and Thornden Woods.

Map of Greenhill © OpenStreetMap contributors

About our fire stopping in Greenhill

Facilities managers in Greenhill often find open service penetrations when ceilings come down for other work. If a specification already covers those walls and floors, we can reseal to it using the product and detail it sets out. With no specification in place, the first step sits with your designer or fire engineer, not with us. If you are dealing with damaged fire seals in risers and voids and old intumescent sealant that has split away, we can put it right, on pipe penetrations, joints between fire-resisting walls and floors and cable penetrations alike. A single leaking joint is often how a building in Greenhill first comes to us: we check the joints around it and give you an honest view of what needs doing now and what can wait.

Around Greenhill, penetration and linear seals tend to be one-building jobs. Send the specification, drawings or photos of the openings and we will quote to suit.

Building owners and contractors get the same cover: twelve months on the work we carried out. It doesn’t extend to damage, faults in the building or work by others, and we are upfront about that.

Location
Greenhill (CT6)
Region
Kent
Guarantee
12 months on our workmanship
Quotes
A fixed quote before we start
Call
01277 525 020
Last updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

When to call us in Greenhill

Some service penetrations were never sealed at all, often hidden above suspended ceilings or behind boxing. They come to light during inspections, refits or when another trade lifts a tile.

Look out for the following:

  • Unsealed joints where partitions meet the slab
  • Old intumescent sealant that has split away
  • Snag lists that include open service penetrations
  • Seals disturbed by maintenance and left open

Residences at universities like University of Kent (to the south of Greenhill) have compartment walls that must be resealed whenever services change.

Comparing quotes

  • Which product they’ll use, and why it suits the joint
  • Whether their applicators hold CSCS cards
  • Health and safety accreditation such as CHAS
  • How long is the guarantee, and what does it include?

Questions to ask before you appoint anyone

Owners, agents and contractors

As a CHAS accredited contractor and Constructionline member, we make supplier vetting simple. We are fully insured, and our insurance certificate can go with the quote.

Building owners and managing agents use us on everything from one building to a spread of sites around Greenhill. Several sites can go on one quote, which keeps the paperwork simple.

Questions we’re asked in Greenhill

Can work at a site such as University of Kent fit around teaching?

Yes. Tell us the term dates, vacation periods and access windows, and we will plan the work around them. Let us know which documents your site asks for, and we will confirm them alongside the quote.

Is Greenhill too small for you to travel to?

No. Places such as Greenhill are covered as much as the big towns. London and every South East county are within our area. Good photos up front let us bring everything on the first visit.

How do you choose the sealant?

Where there’s a specification, we use the product it names. Otherwise, we recommend a product to suit the joint’s movement, the substrate and the conditions, following the manufacturer’s guidance.

Do the same rules apply to fire stopping in Scotland?

Our work covers Greater London, the South East and every Scottish council area. In Scotland, clause 2.1.14 of the non-domestic Technical Handbook says service penetrations should keep at least the fire resistance of the wall or floor, with proprietary products tested for the end use.

Can you work to our specification?

Yes. Send it with your enquiry, and we will price the work to it, flagging anything that needs clarifying.

Can you reseal penetrations after our M&E works?

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

Do you need to see the site first?

That depends on the size and complexity of the job. Simple work can often be priced from photos, while larger or less clear jobs get a site visit first.

Why act early in Greenhill

An open or wrongly sealed service penetration lets fire and smoke reach the next compartment much sooner than the building was designed for. While the openings can be reached, sealing them is normally straightforward. Left until ceilings are closed or a tenant moves in, the same work costs more access and more disruption. Small buildings around Greenhill suffer from failed joints as much as large ones. Catching it early means a reseal rather than repairs.

Quantities, awkward access and phased working all shape the price. So do site requirements such as inductions and permits.

Why us?

  • A fixed quote before work starts
  • Health and safety: CHAS accredited
  • Constructionline member
  • One contact handling all your sites

See our cost guide and our accreditations and insurance.

Aftercare for building managers

Your facilities or cleaning team can help the joints last. Share these points with them:

  • Settle who seals which penetrations at the start of a project
  • Flag new cables with no seal around them
  • Check risers and ceiling voids after each round of works
  • Arrange inspection before areas are covered up

New services after handover are a common way fire stopping gets breached. A short check at the end of each job saves a long hunt later.

A simple record of seal locations and products helps. When a new service goes through, everyone knows which product and detail to match, and it helps at inspections.

Diagnose, treat, sign off

A typical day starts with protection: masking tape along the joint edges and sheeting over anything nearby. The work itself typically takes a single visit for a short list of penetrations, or a phased programme for a whole building, and our waste is bagged and taken away as we go. For a site in Greenhill, we plan so the whole job is done in one go where possible. Clear photographs and measurements help us bring the right products.

  1. We ask for the product and detail your designer has specified.
  2. We sort the openings by the detail each one needs.
  3. Old or wrong materials are cut out.
  4. Mineral wool or other backing is fitted where required.
  5. Fire-rated or intumescent sealant goes in around the services and is tooled off.
  6. Completed areas are checked with you, with the records agreed when we quoted.

What we need from you

  • Share the asbestos register for older buildings
  • Point out parking and an unloading spot
  • Warn occupants and staff about the work

Request a quote

Let us know the site, the scope and your timescale, and we’ll put a fixed quote together. To get it moving, ring 01277 525 020 or use the quote form.

Ask for a quote

Read more

Different surfaces, different methods

Small ducts

Ducts are only sealed with sealant where the detail allows it. Dampers and ductwork systems themselves are outside our work.

Cables and cable bundles

Single cables and small bundles are often within a fire-rated sealant’s tested detail. Bundle size, cable type and the space between cables all matter, so we check before sealing.

Accreditations

Trusted. Accredited. Insured.