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

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

Planning work on a service penetration in Farthing Green? We assess it, carry out the work and guarantee our workmanship for 12 months.

  • Seals that don’t match their tested detail
  • Non-fire-rated filler around services
  • Head-of-wall gaps with no fire seal
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
Constructionline member
£5m PL insurance

Fire stopping across Farthing Green

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

Fire stopping in Farthing Green

It helps to set out our role at the start. The designer, fire engineer or building control decides which fire stopping is required. What we bring is careful installation of the specified sealant, to the maker’s guidance. The enquiries we see most involve fire seals cut back for extra cables and never reinstated and seals that don’t match their tested detail, across pipe penetrations, joints between fire-resisting walls and floors and linear gaps at wall heads. A specialist sealant contractor works differently from a general builder: in Farthing Green, that means joint design, primers and backing rod as standard.

A job near Farthing Green is normally planned around one visit, with the specification and photographs sent in advance. Design and sign-off belong to the designer or building control; we install what’s specified.

Our workmanship is guaranteed for 12 months, wherever the site is. If our installation lets you down in that time, we return and fix it.

Where
Farthing Green (TN12)
Region
Kent
Cover
12 months on every job
Price
Fixed quote, scope in writing
Call
01277 525 020
Last updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

Why deal with it now?

Open service penetrations matter on ordinary days, not just in a fire: smoke, noise and draughts pass through them every day. The specified fire seal closes the gap for all of these, and the other benefits follow. One visit to deal with every failing joint makes more sense than several trips to a place like Farthing Green. Photos of every joint help us quote for the whole job.

Access often affects the price as much as the sealing: joints within easy reach take less time than ones that need access equipment. Mention the access as part of your enquiry.

Why clients in Farthing Green choose us

  • Commercial sealant work since 2005
  • CHAS accredited
  • A fixed quote before work starts
  • Specification-led, product-correct work

Read our cost guide or how we’re accredited.

Different surfaces, different methods

Linear joints

Head-of-wall gaps, slab edges and wall junctions are linear joints. BS EN 1366-4 testing sets the joint widths, depths, backing and movement a seal covers.

Masonry and concrete

Many seals are made in blockwork, brickwork or concrete slabs. Dust and loose debris are cleared out of the opening.

Looking after the joints

Your facilities or cleaning team can help the joints last. Pass these on to them:

  • Ask which product is in place before decorating
  • Put resealing into every M&E and fit-out package
  • Treat an open penetration as a priority repair
  • Arrange inspection before areas are covered up

After every round of M&E works, check that the openings created have been sealed. A short check at the end of each job saves a long hunt later.

Regular walk-rounds of service areas are worth the time. A cracked or disturbed seal found early is a small job.

Your questions answered

How does the move away from BS 476 affect penetration seals in Farthing Green?

From 2 September 2029, Approved Document B drops its BS 476 references in favour of BS EN 13501-2 classification, with transitional arrangements. Whichever applies, we install the specified product to its tested detail; the specification is for the designer to set.

Is Farthing Green too small for you to travel to?

No. Small places get the same service as large ones. We work across Greater London and the South East. Send photos and a list of what needs doing, and we will plan the job to need as few trips as possible.

How long before the joints can be used?

The product and site conditions decide that. Some products skin over quickly but need longer to cure fully, and we confirm it before leaving site.

Do you take on small jobs?

We quote for single jobs as well as large packages and programmes. Photos and a description are enough to start.

What will the job cost?

Each job is quoted on its own details. For yours, give us a call on 01277 525 020 or email a schedule or drawings.

Do you have public liability insurance?

Yes. We’re fully insured, and the certificate can go with your quote.

Can one quote cover more than one building?

Yes. Several buildings can share a single quote, and you deal with one contact throughout.

Penetration seals near Farthing Green

Central London is about 37 miles from Farthing Green. Tenant changes on commuter-belt business parks mean regular fit-outs, and new services through compartment 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.

For buildings in and around Farthing Green, fire-rated sealant is installed where it is specified, to the manufacturer’s tested detail. On estates like Barradale Farm Industrial Estate, 1.1 miles south-east of Farthing Green, the wall between office and warehouse is often fire-resisting, and cables through it need the specified seal.

Farthing Green is about 6 miles south-east of Maidstone, in Kent. Farthing Green sits inside our coverage, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. We work across 931 places in Kent, large and small. For work in that direction, see our London page, about 37 miles away.

Work on service penetrations is covered throughout TN12, whatever the building. Just outside Farthing Green, we also work in Devil's Den (1 mile north-west), Hawkenbury (1 mile south-west), Rabbit's Cross (2 miles west), Cross-at-Hand (2 miles west) and Staplehurst (2 miles south-west). A short drive away, we cover Maidstone (6 miles north-west), Ashford (12 miles east), Sittingbourne (12 miles north-east), Royal Tunbridge Wells (14 miles west), Tonbridge (14 miles west) and Faversham (15 miles north-east).

Near you in Farthing Green

Farthing Green’s nearest station is Staplehurst station, about 2.1 miles south-west of the centre. A little further out are Brattle Farm Museum (3.4 miles south-west) and Sutton Valence Castle (1.6 miles north).

Map of Farthing Green © OpenStreetMap contributors

What we can’t put right

Honesty saves time and money. New sealant won’t cure:

  • Construction that lacks the fire resistance the seal relies on
  • Plastic pipes whose detail calls for a collar or wrap
  • Writing the fire-stopping specification

If you’re not sure, just phone 01277 525 020 or email a schedule or drawings and we will give you a straight answer before you book.

Surfaces we seal

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

On site: what to expect

Tell us your site hours and access windows and we will plan around them. While we are working, the area stays contained and tidy, and your contact hears from us before we move to the next area. If others near Farthing Green need work, visits can be combined. You’ll have a fixed quote before work starts.

  1. We start with your penetration schedule, drawings or specification.
  2. We plan the sequence of floors, risers and voids with you.
  3. We compare every service penetration with its tested detail before sealing.
  4. Foam, ordinary sealant and debris come out first.
  5. The specified backing and sealant go in to depth and are finished neatly.
  6. We tell you about openings that need a different product.

Before we start on site

  • Have the specification and drawings to hand
  • Warn occupants and staff about the work
  • Point out parking and an unloading spot

Get a fixed quote

Send details, get a quote, we seal, guaranteed: that’s how every job runs. To take the first step, ring 01277 525 020 or email drawings and photos.

Get a quick quote

Advice

Commercial clients in Farthing Green

For main contractors, we work as the sealant subcontractor, on new build and refurbishment alike. We work to your programme, your specification and your site rules.

We work for building owners and managing agents on everything from one building to a spread of sites around Farthing Green. Several sites can go on one quote, which keeps the paperwork simple.

Accreditations

Trusted. Accredited. Insured.