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

Petham fire stopping

We carry out fire-rated and intumescent sealing of service penetrations and linear gaps in Petham and the surrounding area. Send details for a fixed quote.

  • Unsealed openings around new pipes and cables
  • Fire seals cut back for extra cables and never reinstated
  • Head-of-wall gaps with no fire seal
1
Send details
Drawings, photos, a joint schedule or a site visit.
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
12-month guarantee on our workmanship.
Covering the South East & Scotland
Constructionline member
£5m PL insurance

Fire stopping across Petham

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

Honest limits

Part of a good diagnosis is knowing where sealant stops. We will tell you if the real problem is any of the following:

  • Designing or specifying fire stopping, which sits with the designer or fire engineer
  • Walls or floors that aren’t fire-resisting to begin with
  • Plastic pipes whose detail calls for a collar or wrap

If you’re not sure, just ring 01277 525 020 or email the details over and we’ll give you a straight answer.

Surfaces we seal

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

About our fire stopping in Petham

Facilities managers in Petham 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, matching the product and detail it names. With no specification in place, the first step sits with your designer or fire engineer, not with us. If you’re dealing with penetration schedules that need working through and fire stopping installed outside its tested range, we can put it right, on service gaps in risers, joints between fire-resisting walls and floors and small duct penetrations where the tested detail allows alike. A specialist sealant contractor works differently from a general builder: in Petham, that means joint design, primers and backing rod as standard.

Rural conversions around Petham 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. It doesn’t extend to damage, faults in the building or work by others, and we’re upfront about that.

Mastic Doctor team members lined up next to their branded vans outside an office building
Location
Petham (CT4)
Wider area
Kent
Guarantee
12 months on our workmanship
Quotes
Fixed quote, scope in writing
Call
01277 525 020
Page updated
3 November 2026

From enquiry to sign-off

Tell us your site hours and access windows and we’ll plan around them. While we’re working, the area stays contained and tidy, and your contact hears from us before we move to the next area. Jobs in and around smaller places like Petham are usually planned as a single visit, so photos and measurements up front really help. That way the right products come on the day.

  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. Where the detail needs backing, it goes in at the stated depth.
  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.

Before we start on site

  • Let us know about inductions and permits
  • Confirm the product named in the specification
  • Tell us which areas need to stay in use

Request a quote

To get a fixed quote, ring 01277 525 020 or email the details over. Our quote form is another easy route.

Ask for a quote

Advice

Penetration seals near Petham

Fire stopping of openings and penetrations in England falls under Approved Document B. 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. What we install is set by the specification, and it goes in to the tested detail. At about 53 miles from central London, Petham is within reach of the capital. Tenant changes on commuter-belt business parks mean regular fit-outs, and new services through compartment walls.

In a school such as Petham Primary School, fire-rated sealant goes in around service penetrations where it is specified. Large healthcare estates like Kent and Canterbury Hospital, 3.4 miles north-east of Petham, change their services often, so penetration seals are worth checking after M&E work. Residences at universities like University of the Creative Arts, 4 miles to the north-east of Petham, have compartment walls that must be resealed whenever services change.

Petham is about 4 miles south of Canterbury, in Kent. Businesses, contractors and managing agents in Petham use us for work on service penetrations, as part of our coverage of Kent. 931 places across Kent fall within our area, Petham among them. London is covered too, around 53 miles from Petham.

We take on service penetrations across the CT4 postcode area. Among the streets we cover are The Street, Vicarage Hill and Town Road. Just outside Petham, we also work in Garlinge Green (1 mile north-west), Lower Hardres (2 miles north-east), Upper Hardres (2 miles east), Anvil Green (2 miles south-west) and Pett Bottom (2 miles east). Nearby towns on our patch include Ashford (10 miles south-west), Canterbury (4 miles north), Dover (12 miles south-east), Folkestone (11 miles south-east), Whitstable (9 miles north) and Deal (15 miles east).

Around Petham

The nearest railway station is Chartham station, roughly 2.6 miles north-west. A little further out are Canterbury Castle (3.8 miles north) and Kent and Canterbury Hospital (3.4 miles north-east). Open spaces near Petham include Blean Woods RSPB Reserve.

Map of Petham © OpenStreetMap contributors

Questions we’re asked in Petham

Is Petham too small for you to travel to?

Not at all. Petham is within our area. London and every South East county are within our area. We plan jobs in smaller places so return trips are kept to a minimum.

Is hospital work, at somewhere like Kent and Canterbury Hospital, something you do?

Yes. Healthcare sites are among the places we work. Each area is agreed with the ward or department and the estates team in advance.

What do you charge?

That depends on the job: quantities, access, the product and any phasing. Call for a quote.

Do you hold third-party fire-stopping installer certification?

No, and we’d rather be clear about that. Third-party schemes aren’t a legal requirement, but many clients and main contractors ask for them, so check your contract first. Where it isn’t required, we install the specified sealant to the maker’s details.

Do you have public liability insurance?

Yes. Our insurance certificate can be sent alongside the quote.

Is the BS 476 change in 2029 relevant to fire stopping?

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. The European route, BS EN 13501-2, then applies. Your designer will choose products with the right evidence.

Will you come and look before quoting?

That depends on the size and complexity of the job. Simple work can often be priced from photographs, and bigger or more complex jobs usually get a visit.

Doing it in-house

General builders and handymen seal joints, but it isn’t their main trade. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint, which is what makes a joint last.

Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.

How the job changes by surface

Drylining partitions

Service holes through plasterboard are frequently oversized or ragged. An oversized hole may be outside the sealant’s range, and the detail may call for board patching or another product.

Plastic pipes

In a fire, plastic pipework melts away and leaves an opening. Some intumescent sealants are tested on smaller plastic pipes. We confirm material and size first and tell you if sealant isn’t the right product.

What happens if it’s left?

Fire stopping is a regular point raised at inspections and handover. Late discoveries can delay handover while openings are reopened and resealed, so earlier action pays back. Halls, stores and units around places like Petham may not be checked every day, so a failed joint can leak for a while before anyone sees it. Renewing joints in good time avoids the problem.

The specified product makes a difference, and so does the preparation, such as cutting out, priming or new backing rod. Access, phasing and site rules also count.

Why appoint us

  • One phone line for London, the South East and Scotland
  • Old sealant cut out, never sealed over
  • Fully insured, including public liability cover
  • A Constructionline member, so easy to vet

See how commercial sealant jobs are priced or our accreditations and insurance.

What sets the cost

Sealant work doesn’t have a standard rate, since sites vary so much. What we look at:

  • Location, for remote and island sites
  • Induction, permit and paperwork requirements
  • Phasing around occupants
  • The total length or number of joints

Pricing service penetrations depends on how many there are, their condition and the access. Ask us for a fixed quote.

Sending details for a quote

Diagnosis starts before we arrive. Tell us:

  • Specification clauses that apply
  • Whether the building will be occupied during the work
  • Whether an asbestos survey exists
  • Approximate linear metres or a joint schedule

Let us know the site, the scope and your timescale, and we’ll put a fixed quote together. To get it moving, phone 01277 525 020 or email a schedule or drawings.

Accreditations

Trusted. Accredited. Insured.