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

Force Green fire stopping

Fire-rated and intumescent sealing of service penetrations and linear gaps in Force Green and across Kent. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.

  • Old intumescent sealant that has split away
  • Fire-stopping items raised at inspection or handover
  • Unsealed openings around new pipes and cables
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
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
London, the South East & Scotland
Constructionline member
Fully insured: £5m PL

Fire stopping across Force Green

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

Fire stopping in Force Green, done properly

Where pipes, cables and other services cross a compartment wall or floor, the opening around them has to be closed so fire and smoke can’t move between compartments. Our job is fitting fire-rated and intumescent sealant at those service penetrations, and along linear gaps, where it is the specified product. We work to the product’s tested detail for every seal, not a rule of thumb. We work on small duct penetrations where the tested detail allows, service gaps in risers and linear gaps at wall heads, and what we are called in for most is seals disturbed by maintenance and left open and service penetrations left open after M&E works. Most enquiries from Force Green start with one failed joint and grow into a wider look at the building: we look at the rest while we are there and tell you what we find.

A job near Force Green is usually planned around one visit, so send the specification and photographs first. We install to the specification and the manufacturer’s guidance, leaving design and sign-off with the designer and building control.

We stand behind the joints we seal: 12 months, guaranteed. That covers our preparation and application, and if something we did falls short, we return to it.

Where
Force Green (TN16)
Wider area
Kent
Guarantee
12 months on our workmanship
Quote
Quoted before any work starts
Telephone
01277 525 020
Page updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

Owners, agents and contractors

Planned maintenance programmes are welcome: resealing failed joints building by building, on a schedule that suits your budget. Sites in Force Green can sit alongside others in a wider programme across Kent.

Building owners and managing agents use us on everything from one building to a spread of sites around Force Green. One quote can cover more than one site, which keeps the paperwork simple.

Questions we are asked in Force Green

Do you work on fire-rated sealing in hotels in Force Green?

Yes, where fire-rated sealant is the specified product. It goes in to the manufacturer’s tested detail for the wall or floor and the services passing through, and we’ll tell you if the detail calls for a collar, wrap or batt instead.

Is Force Green off your patch?

Not at all. Force Green is within our area. Our area covers London and the South East counties. Where we can, we group nearby jobs to make the most of each trip.

What hours do you work?

Give us your site hours and any access windows in your enquiry, and we will schedule the work to suit. You can reach the office between 8am and 5pm, Monday to Friday.

Can you follow the specification on our project?

Yes. Send it with your enquiry, and the quote will be based on it.

Is the work guaranteed?

Yes, for 12 months. If a joint fails because of how we installed it, we come back and put it right.

Can the building stay open while you work?

Yes, with some planning. Tell us your site hours and access windows and we’ll plan around them.

Is it fine to apply new sealant on top of old?

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

Looking after the joints

Regular inspection catches problems early. In particular:

  • Check risers and ceiling voids after each round of works
  • Check with the data sheet before painting over fire sealant
  • Foam or ordinary sealant is never a fire-seal repair
  • Make fire stopping part of every scope that crosses a fire-resisting wall

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

Make reporting new openings part of every permit to work in service areas. Small habits like this stop openings building up.

Where services cross fire walls in Force Green

Force Green lies roughly 17 miles out from central London. Business park offices in the commuter belt are refitted as tenants change, and each fit-out adds services through compartment walls; the gaps need the specified seal. There are a number of hotels within about 2 miles of Force Green. Hotels are divided into compartments, and refurbishments that add pipes and cables through bedroom and corridor walls leave gaps to close.

Halls and meeting rooms at places like Church of St Mary the Virgin sometimes gain new services, and any compartment wall crossed needs the specified seal. For a hotel such as The George And Dragon Hotel, 0.8 miles south of Force Green, penetration seals are worth checking after any refit or services upgrade. Hospital estates such as Tandridge Priory (to the south-west of Force Green) are divided into fire compartments, and any service penetration through them should be sealed to the specified, tested detail.

Force Green is about 5 miles west of Sevenoaks, in Kent. Our applicators travel to Force Green for work on service penetrations, handled exactly as we handle every other area. Our Kent coverage takes in 931 places, large and small. There’s a separate page for London, about 17 miles away.

Business premises anywhere in TN16 are within our area. We also cover Westerham (1 mile south), South Street (2 miles north-west), Moorhouse Bank (2 miles south-west), Tatsfield (2 miles north-west) and Titsey (2 miles west) for service penetrations. A short drive away, we cover Dartford (13 miles north-east), Sevenoaks (5 miles east), Royal Tunbridge Wells (13 miles south-east), Tonbridge (10 miles south-east), Swanley (9 miles north-east) and Kings Hill (14 miles east).

Near you in Force Green

Recent enquiries here include premises near The Olde House At Home Public House, among other places. The nearest railway station is Oxted station, roughly 3.8 miles south-west of the centre. Other landmarks nearby include Tandridge Priory (2.7 miles south-west). Open spaces near Force Green include Betsom's Hill and Dryhill Nature Reserve.

Map of Force Green © OpenStreetMap contributors

Surface by surface

Plastic pipes

Plastic waste pipes through slabs come up often. The detail decides whether sealant alone is enough, and we will never swap a specified collar for sealant.

Small ducts

Small ductwork can sometimes be sealed with sealant where the tested detail includes it. Bigger ducts and fire-resisting ductwork are normally handled with other products and we flag that rather than guess.

How a job runs

Where the site stays busy, the work is phased so only one area is out of use at a time. Each section is protected, cleaned back and sealed, then handed back before we move to the next. For work around Force Green, we aim to finish in one visit, so photographs and measurements up front really help. Then the right materials arrive with us.

  1. We read the specification, drawings or penetration schedule you send and raise any questions before we price.
  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. If an opening needs something other than sealant, we tell you instead of improvising.

Before we start on site

  • Point out parking and an unloading spot
  • For older buildings, check the asbestos register before work
  • Clear stock, furniture or equipment away from the joints

Getting a fixed quote

Quotes are fixed against the scope you send, so you know the figure before anyone is on site. To start the process, ring 01277 525 020 or send photos by email.

Get a price

Advice

What affects the price in Force Green

Each job is priced on its own details. The things that drive the figure:

  • Backing rod, priming and other preparation
  • The product specified
  • Quantities, in metres or numbers
  • Travel to remote or island sites

Every site prices differently: joint size, product, access and site hours all play a part. A fixed quote follows once we understand the job.

Details that help us quote

Whether it’s one area or a whole building, the same details help:

  • The product your specification calls for
  • The asbestos register, for older buildings
  • When you need the work done
  • How the joints are reached, and at what height

Photos, drawings or a schedule of the joints are often enough for a fixed quote. If the job needs a look first, we’ll arrange a site visit.

When to bring in a specialist

Using site staff can make sense for a small touch-up, but larger jobs are different: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.

Redoing a failed joint typically costs more than getting it right at the outset, because the whole bead must be removed and the faces cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.

Accreditations

Trusted. Accredited. Insured.