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

Fire-rated sealing and fire stopping in Postling Green, Kent

Commercial sealant work in Postling Green for contractors, FMs and building owners: fire-rated and intumescent sealing of service penetrations and linear gaps, with a fixed quote first.

  • Fire-stopping items raised at inspection or handover
  • Fire-rated sealant that has cracked or shrunk back
  • Open linear gaps along the top of fire-resisting walls
1
Send details
Send the specification, photos or a marked-up plan.
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
12-month guarantee on our workmanship.
London, the South East & Scotland
CHAS & Constructionline
£5m PL insurance

Fire stopping for Postling Green sites

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

Fire stopping around Postling Green: what changes locally

At about 54 miles from central London, Postling Green is within reach of the capital. Business park offices in the commuter belt are refitted as tenants change, and each fit-out adds services through compartment walls. Approved Document B is the English guidance that covers fire stopping around openings and penetrations. Its BS 476 references are being withdrawn from 2 September 2029, with BS EN 13501-2 classification taking over, subject to transitional arrangements. We install whatever has been specified, to the product’s tested detail.

For a school such as Aldington Primary School, penetration sealing fits best at the end of the summer works. For a building at a site such as Evegate Business Park, 2.2 miles north of Postling Green, a check of penetration seals after each fit-out is good practice.

Postling Green is about 5 miles west of Hythe, in Kent. Across the TN25 postcode area, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. Our Kent coverage takes in 931 places. Sites around Brighton have their own page, roughly 50 miles from Postling Green.

We cover the TN25 postcode districts for service penetrations. Nearby places we also cover include Aldington (1 mile north-west), Stonestreet Green (1 mile north-west), Bonnington (1 mile west), Clap Hill (1 mile north-west) and Aldington Frith (2 miles north-west). Further afield, our area takes in Ashford (6 miles north-west), Canterbury (15 miles north), Dover (15 miles east), Folkestone (9 miles east), Hythe (5 miles east) and Tower Hamlets (15 miles east).

Around Postling Green

We work on buildings around Walnut Tree Inn and Poulton Wood, among other places. Postling Green’s nearest station is Westenhanger station, roughly 3.5 miles east. Well-known places in the area include William Harvey Hospital (4.6 miles north-west) and Lympne Castle (2.8 miles east). The countryside around Postling Green includes Hatch Park.

Map of Postling Green © OpenStreetMap contributors

Fire stopping in Postling Green

For main contractors, our fire stopping package slots in after the M&E trades have finished in an area. To price a package, phone 01277 525 020 or send details through our quote form with the schedule or marked-up drawings alongside the manufacturer’s details. Tell us what records you need and we will confirm with the quote. The enquiries we see most involve fire stopping installed outside its tested range and openings found when ceilings come down for a refit, across service gaps in risers, linear gaps at wall heads and small duct penetrations where the tested detail allows. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, the work in Postling Green is the same: the right product in a properly prepared joint.

Rural conversions around Postling Green can put new fire-resisting partitions inside older structures. A penetration seal only performs as tested if product, substrate, service, gap and depth all match the detail.

Whoever the client is, the cover is the same: a 12-month guarantee on our workmanship. Faults in the structure, damage and other trades’ work fall outside it, and we say so plainly.

Where
Postling Green (TN25)
Wider area
Kent
Cover
12 months on every job
Quote
A fixed quote before we start
Telephone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Maintenance after handover

Regular inspection catches problems early. In particular:

  • Don’t let anyone top up a fire seal with the wrong product
  • Look above ceilings when tiles are lifted for other jobs
  • Settle who seals which penetrations at the start of a project
  • Have penetrations checked while they can still be seen

Allow the manufacturer’s stated cure time before boxing in or decorating. Some fire-rated sealants accept paint and some don’t.

Looking at service areas on a regular cycle pays off. A cracked or disturbed seal found early is a small job; found late, it can be one of many.

Signs you need fire stopping in Postling Green

On a busy project, programme pressure can mean fire stopping is rushed or left to whichever trade is closest. That is when untested combinations creep in.

These are often picked up first by site or facilities staff:

  • Non-fire-rated filler around services
  • Fire-rated sealant that has cracked or shrunk back
  • Hidden openings found during inspections
  • Fire seals cut back for extra cables and never reinstated

For a building such as Church of St Martin, new heating or data runs are the usual reason penetrations need sealing.

Before you book anyone

  • Do they follow the manufacturer’s priming guidance?
  • Is depth set with backing rod, or bond-breaker tape in shallow joints?
  • How the existing material will be dealt with
  • What site paperwork they can supply

Our contractor checklist

How the job changes by surface

Drylining partitions

Drylined fire walls are tested in a particular build-up. We check that the product’s detail covers that partition type and board thickness before sealing.

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.

Diagnose, treat, sign off

Occupied buildings need a little choreography. The work area is signed and kept contained, keep walkways clear and work section by section so the rest of the building stays in use. Smaller jobs around Postling Green can be grouped with others nearby, which keeps travel down. A fixed quote is given before anything starts.

  1. We read the specification, drawings or penetration schedule you send and ask about anything unclear.
  2. On site, each opening is checked against the tested detail it is meant to follow.
  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. Openings that need a collar, wrap, batt or other product are flagged to you rather than filled with sealant.

Preparing the site

  • Tell us what induction or permit system the site runs
  • For older buildings, check the asbestos register before work
  • Tell us which areas need to stay in use

Request a quote

Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, phone 01277 525 020 or email us.

Get a quick quote

Advice

Questions about Postling Green

Would you work within a site like William Harvey Hospital?

Yes, hospitals are one of the sectors we cover. We follow the site’s permits, sign-in and infection-control procedures in every area.

Is a smaller place like Postling Green outside your area?

No. Small places get the same service as large ones. We cover Greater London and the counties of the South East. We plan jobs in smaller places so return trips are kept to a minimum.

How long does a job like this take?

That varies with the scale of the job, but the work typically takes longer where risers, ceiling voids or occupied floors have to be worked through in sequence. For bigger or phased jobs, we’ll set out a timescale with the quote.

Which sealant will you use?

A specification, where there is one, decides it. If there isn’t one, it comes down to the joint: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.

Can you handle several sites?

Yes. A group of buildings can go on one quote, and you deal with one contact throughout across South East England, Greater London and Scotland.

Will you sign off the seals for us?

No. Approval sits with the designer, principal designer or building control. We will confirm the product and detail installed, and you can tell us what other records you need at quote stage.

Is BS 476 being phased out?

In England, references to the older BS 476 national classes are being removed from Approved Document B from 2 September 2029, with transitional arrangements set by the Government. After that, the European classification under BS EN 13501-2 is the route. Your designer will choose products with the right evidence.

Honest limits

Being straight saves everyone time. New sealant won’t cure:

  • Gaps in walls that were never built as compartment walls
  • Openings that need collars, wraps, batts or boards rather than sealant
  • Issuing fire ratings or certificates for seals

If in doubt, give us a call on 01277 525 020 or email a schedule or drawings and we will say what we think.

What we seal

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

How the quote is worked out

These are the things that shape the price:

  • Phasing around occupants
  • Which sealant the job calls for
  • Joint width, depth and condition
  • Quantities, in metres or numbers

Small jobs and large programmes are priced from the same things: scope, access, product and programme. Call for a quote and we’ll put a fixed figure on it.

What to include in your enquiry

However big the job, the same details help:

  • Specification clauses that apply
  • Photos of the joints, close up and from further back
  • Whether the building will be occupied during the work
  • Your programme or deadline

Specifications, drawings and tender packages are welcome with any enquiry, and we’ll price against exactly what is specified. Smaller jobs need nothing more than photographs and a few notes.

Accreditations

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