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

Fire Stopping in Flete

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

  • Fire sealant pulled out of the opening
  • Hidden openings found during inspections
  • Improvised or mixed-product fire seals
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Signed off, with 12 months’ guarantee.
Covering the South East & Scotland
Constructionline member
Fully insured: £5m PL

Fire stopping in Flete

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

Fire stopping for commercial buildings in Flete

For main contractors, our fire stopping package slots in after the M&E trades have finished in an area. We work from your penetration schedule or marked-up drawings alongside the manufacturer’s details. Tell us what records you need and we will confirm with the quote. If you have builders’ foam or ordinary silicone in compartment walls and service penetrations left open after M&E works, we can help. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in Flete, preparation and product choice get the time they need.

Rural conversions around Flete 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 are upfront about that.

Mastic Doctor team members lined up next to their branded vans outside an office building
Place
Flete (CT9)
Wider area
Kent
Cover
12 months on every job
Price
Fixed quote, scope in writing
Call
01277 525 020
Last updated
3 November 2026

Owners, agents and contractors

We work for building owners and managing agents on everything from one building to a spread of sites. Several sites can go on one quote, so there’s one set of paperwork to deal with.

Hospitality, education, healthcare, office and retail clients come to us directly as well. The work is planned around how the building runs, so guests, pupils, patients or staff are disturbed as little as possible.

When it isn’t the sealant

Sealant solves a lot, but not everything, and we’d rather tell you before you spend money. These need a different solution:

  • Plastic pipes whose detail calls for a collar or wrap
  • Fire risk assessments, a job for a competent assessor
  • Walls or floors that aren’t fire-resisting to begin with

Not sure which it is? You can speak to us on 01277 525 020 or send details through our quote form and we will tell you honestly before you book.

Surfaces we seal

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

Our process

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 before we move to the next. If others near Flete need work, visits can be combined. A fixed quote is given before anything starts.

  1. We start with your penetration schedule, drawings or specification.
  2. Access, permits and the order of areas are agreed with the site team.
  3. Each opening is checked for wall or floor type, service, gap and depth.
  4. Foam, ordinary sealant and debris come out so the seal starts clean.
  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.

What we need from you

  • Agree which areas must stay open
  • Let building users know which areas are affected
  • Send asbestos survey details if the building is pre-2000

Ask for a quote

We quote a fixed sum against the scope you give us, so you know the figure before anyone is on site. To ask for one, speak to us on 01277 525 020 or email us.

Ask for a quote

Read more

Common questions from Flete clients

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

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.

Is Westwood Industrial Estate, near Flete, within your area?

Yes. We cover Flete and the area around it, including industrial estates, business parks and retail parks such as Westwood Industrial Estate. A few photos and the unit address let us price the work.

What hours do you work?

Give us your site hours and any access windows in your enquiry, and we’ll plan around them. Our office runs Monday to Friday, 8am until 5pm.

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

No. Sealing over old material is one of the classic causes of early joint failure, so it all comes out first.

Can you work while the building is occupied?

Usually, yes. Phased work can be planned so areas stay in use.

How long before the joints can be used?

We’ll confirm how long the chosen product needs to cure, and flag anything to keep off until it has cured.

Do you take on small jobs?

We quote for single jobs as well as large packages and programmes. Send details for a fixed quote.

Cost factors for service penetrations

These are the things that shape the price:

  • Backing rod, priming and other preparation
  • Access and working height
  • Induction, permit and paperwork requirements
  • Phasing around occupants

Quantities, awkward access and phased working all shape the price. So do site requirements such as inductions and permits, along with the time of year for external work.

Sending details for a quote

To price the job accurately, we need to understand the site. Useful things to include:

  • Whether an asbestos survey exists
  • Approximate linear metres or a joint schedule
  • Whether the building will be occupied during the work
  • The site address and postcode

A handful of photographs and a postcode is the fastest way to a quote. Send them through the quote form, or call 01277 525 020 or use the quote form if you’d rather talk the job through.

Do you need fire stopping in Flete?

Openings in fire-resisting walls normally appear when services are added or changed. A new cable pulled by an electrician, a pipe rerouted by a plumber or a data run drilled through a riser leaves an opening that nobody returns to. Over a few years of fit-outs, a wall can collect a lot of these.

Most enquiries start with something like this:

  • Fire-stopping items raised at inspection or handover
  • Fire stopping installed outside its tested range
  • Openings left by services added after handover
  • Old intumescent sealant that has split away

Hotels like Hussar Hotel (to the north-west of Flete) are refurbished in phases, and each phase can open up compartment walls.

What your quote should include

  • Are they CHAS accredited or on Constructionline?
  • How they’ll work around occupants
  • How long is the guarantee, and what does it include?
  • Their public liability cover

Our contractor checklist

Compartment walls and floors in Flete

There are six care or nursing homes within about 2 miles of Flete. In a care home, any new pipe or cable through a fire-resisting wall should be sealed to the specified detail. 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 a college such as Nelson College London, which lies east of Flete, checking penetration seals after summer M&E works is good practice. Industrial units on estates such as Westwood Industrial Estate (to the east of Flete) often separate offices from warehouse space with fire-resisting walls, and new services through them need the specified seal.

Flete is about 1 mile south-west of Margate, in Kent. Anywhere in CT9, it works the same way: details in, fixed quote out, then sealing and a 12-month guarantee. Across Kent, 931 places are covered, Flete among them. Our London page has more on work in that area, about 64 miles away.

Business premises anywhere in CT9 are within our area. For a building on Victoria Road, Flete Road and Norfolk Road or nearby, send details and we will quote for service penetrations. We also cover Westwood (1 mile east), Haine (1 mile south-east), Manston (1 mile south), Garlinge (1 mile north-west) and Margate (1 mile north-east). Nearby towns on our patch include Canterbury (14 miles south-west), Broadstairs (3 miles east), Whitstable (15 miles west), Deal (10 miles south), Herne Bay (10 miles west) and Walmer (11 miles south).

Local landmarks in Flete

In Flete, that means premises near Hartsdown Academy and the streets around them. Flete’s nearest station is Margate station, roughly 1.5 miles north. Nearby you’ll also find Queen Elizabeth the Queen Mother Hospital (1.3 miles north-east) and Westwood Cross (1.1 miles east). The countryside around Flete includes Sandwich and Pegwell Bay.

Map of Flete © OpenStreetMap contributors

General trades versus a specialist

For most general trades, sealant is a sideline. 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: new sealant over old, damp or dusty faces, or the wrong product for the movement.

Accreditations

Trusted. Accredited. Insured.