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

Fire Stopping in Harrietsham

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

  • Penetration schedules that need working through
  • Openings found when ceilings come down for a refit
  • Fire stopping installed outside its tested range
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
12-month guarantee on our workmanship.
London, the South East & Scotland
CHAS accredited
£5m public liability

Fire stopping for businesses in Harrietsham

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

About our fire stopping in Harrietsham

It helps to set out our role at the start. Deciding the specification sits with the designer, the fire engineer and building control. We fit the specified fire-rated sealant following that specification and the maker’s installation guidance on buildings around Harrietsham. We work on linear gaps at wall heads, pipe penetrations and service gaps in risers, and the usual reasons a site gets in touch are seals disturbed by maintenance and left open and fire-rated sealant that has cracked or shrunk back. One point of contact handles commercial sealant work in Harrietsham from the first photos to the final walk-round, for single jobs and planned programmes alike.

Around Harrietsham, penetration and linear seals tend to be one-building jobs. With the specification and photos of the gaps, we can give a fixed quote and bring the right products.

Every job we finish is backed by a 12-month workmanship guarantee. If a joint we sealed fails because of how it was installed, we come back and put it right.

The Mastic Doctor team beside their liveried vans in front of an office building
Place
Harrietsham (ME17)
Region
Kent
Cover
12 months on every job
Price
Fixed quote, scope in writing
Call
01277 525 020
Last updated
3 November 2026

How a job runs

The first thing on site is a walk round with your contact, to confirm the scope, the order of work and any areas we must keep clear. After that, any old or failed material is removed, each joint is prepared and the new sealant goes in. Work in places the size of Harrietsham is planned as a single visit where we can. Photos with rough sizes let us arrive with everything needed.

  1. The specification and schedule come first, so we know which details apply.
  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.
  5. The specified backing and sealant go in to depth and are finished neatly.
  6. Anything outside the detail is reported to you rather than sealed.

What we need from you

  • Tell staff and tenants when we’ll be in
  • Tell us your opening times and when work is allowed
  • Make sure the joints can be reached

Ask for a quote

The quickest route to a quote is a few photos and the site postcode. Send them through the quote form, or call 01277 525 020 or send photos by email to discuss it first.

Get a quick quote

Read more

Leave it or put it right?

An unsealed opening affects more than fire safety: smoke, noise and draughts pass through them every day. Sealing them to the specified detail deals with the fire risk first, and the other benefits follow. For buildings in places like Harrietsham, one well-planned visit beats several small ones, so we’d suggest renewing all the joints that are going, not just the worst.

We don’t publish prices, because the scope varies so much from one building to the next. For a fixed figure, call for a quote.

Why us?

  • Constructionline member for supplier checks
  • Clear, fixed quotes
  • CHAS accredited contractor
  • Workmanship guaranteed for 12 months

Take a look at our cost guide or our accreditations and insurance.

What we can’t put right

Honesty saves time and money. Fresh joints won’t solve:

  • Approving the work on behalf of building control
  • Writing the fire-stopping specification
  • Reviewing a building’s overall fire safety

If in doubt, phone 01277 525 020 or send photos by email and we’ll say what we think.

Where we work in Harrietsham

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

When to bring in a specialist

Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and our CSCS-carded applicators are used to working under those rules.

What you see is the finished bead, but most of the work is hidden. Backing rod, primer where specified and a joint designed to move with the building are easy to get wrong without experience.

Harrietsham: questions and answers

Can work at a site such as Canterbury Christ Church University fit around teaching?

Yes. Tell us the term dates, vacation periods and access windows, and we will plan the work around them. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.

What does the BS 476 change mean for fire-rated sealant in Harrietsham?

From 2 September 2029, Approved Document B drops its BS 476 references in favour of BS EN 13501-2 classification, with transitional arrangements. The designer or fire engineer sets the specification, and we install the product to the manufacturer’s tested detail.

What will the job cost?

There isn’t a price list, because every site is different. Send photos or drawings and we’ll price it at a fixed figure.

Can you handle several sites?

Yes. Multi-site work and planned programmes are a core part of the service, planned site by site to suit how each building is used.

Do you need to see the site first?

Many jobs can be quoted from photographs, drawings or a joint schedule. If the job needs a look first, we’ll arrange a visit.

Can you work while the building is occupied?

Normally, yes. Phased work can be planned so areas stay in use, with each area protected and signed.

Is any job too small?

Small jobs are welcome alongside larger packages. Photos and a description are enough to start.

Commercial clients in Harrietsham

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

Planned maintenance programmes are welcome: resealing failed joints building by building, on a schedule that suits your budget. Harrietsham can form part of a wider programme across Kent.

How the quote is worked out

These are the things that shape the price:

  • Working within restricted access windows
  • Whether old sealant has to be cut out first
  • How much there is to seal
  • Any access equipment needed

Whether it’s a single area or a whole estate, the same things set the price: scope, access, product and programme. Call for a quote, and you’ll have a fixed figure to work with.

Before you send an enquiry

However big the job, the same details help:

  • The asbestos register, for older buildings
  • Rough lengths or quantities, or drawings if you have them
  • The site address and postcode
  • Your programme or deadline

If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price against exactly what is specified. For smaller jobs, photographs and a description will do.

Fire stopping in Harrietsham: the local picture

Fire stopping of openings and penetrations in England falls under Approved Document B. From 2 September 2029, BS 476 references are being taken out of Approved Document B, leaving BS EN 13501-2 classification as the route, subject to the Government’s transitional arrangements. Our part stays the same: the specified product, installed to its tested detail. Harrietsham lies roughly 38 miles out from central London. Tenant changes on commuter-belt business parks mean regular fit-outs, and new services through compartment walls; the gaps need the specified seal.

Holiday works at schools like Harrietsham Church of England Primary School often leave service openings to seal before pupils return. For an estates team at a campus like Canterbury Christ Church University, 1.7 miles to the north of Harrietsham, summer M&E works are normally followed by a round of penetration sealing. Older community buildings such as Catholic Church of the Good Shepherd that have been rewired or given new heating can have service gaps through walls worth checking against the specification.

Harrietsham is about 7 miles east of Maidstone, in Kent. Businesses, contractors and managing agents in Harrietsham can call on us for service penetrations. We work across 931 places in Kent, from busy centres to rural villages. Sites around London have their own page, about 38 miles away.

Work on service penetrations is covered throughout ME17, whatever the building. Buildings on Church Road, Station Road and Norris Walk are within our area for service penetrations. Close to Harrietsham, our area also takes in Marley (1 mile east), Pollhill (1 mile west), Chegworth (1 mile west), Sandway (1 mile south-east) and Platt's Heath (1 mile south). Nearby towns on our patch include Maidstone (7 miles west), Ashford (11 miles south-east), Sittingbourne (7 miles north), Faversham (10 miles north-east), Minster (13 miles north-east) and Kings Hill (12 miles west).

What’s near Harrietsham

Locally, jobs take us to sites close to Kiln Wood, The Lenham School and The Roebuck Public House and the streets around them. There’s a railway station in Harrietsham itself: Harrietsham station. A little further out are The Dog Collar Museum (2.1 miles west) and Leeds Castle (2.2 miles west).

Map of Harrietsham © OpenStreetMap contributors
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