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

Fire stopping in Swanscombe

Looking for fire stopping in Swanscombe? It’s simple: send details, get a quote, we seal, guaranteed.

  • Head-of-wall gaps with no fire seal
  • Fire-stopping items raised at inspection or handover
  • Hidden openings found during inspections
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
South East, London & Scotland
Constructionline member
£5m public liability

Fire stopping in Swanscombe

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

Compartments and services around Swanscombe

In England, Approved Document B covers fire stopping of openings and penetrations. Its BS 476 references are being withdrawn from 2 September 2029, with BS EN 13501-2 classification taking over, subject to transitional arrangements. Either way, we install the specified product to its tested detail. The area within 2 miles of Swanscombe holds several hotels. A hotel refit often runs new services through compartment walls between bedrooms and corridors, and each opening needs the specified seal.

Workshops and IT rooms at colleges like South Essex College (2.3 miles north-east of Swanscombe) are re-serviced often, leaving penetrations to seal. Residences at universities like University of Greenwich (1.1 miles south-west of Swanscombe) have compartment walls that must be resealed whenever services change.

Swanscombe is about 3 miles east of Dartford, in Kent. Our applicators travel to Swanscombe for work on service penetrations, handled exactly as we handle every other area. Swanscombe is one of 931 places in Kent on our list. Our London page has more on work in that area.

Anyone looking for fire stopping in DA9 and DA10 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. Among the streets we cover are London Road, Craylands Square and High Street, and sites on any of them can send details for a fixed quote. You will find Swanscombe on or near the A206 and A226, so getting applicators and materials to site is simple. Sites close to Swanscombe are covered too, including Greenhithe (1 mile north-west), Stone (1 mile west), Bean (1 mile south), West Thurrock (2 miles north) and Darenth (2 miles south-west). Further afield, our area takes in Dartford (3 miles west), Sevenoaks (12 miles south), Gravesend (4 miles east), Northfleet (3 miles south-east), Swanley (6 miles south-west) and Kings Hill (13 miles south).

Around Swanscombe

Recent enquiries here include premises near Castle Hill Park, The Ebbsfleet Academy and The Pier Hotel. Swanscombe’s nearest station is Greenhithe for Bluewater station, roughly 0.5 miles west. Other landmarks nearby include Stone Castle (0.7 miles south-west) and Bluewater (1 mile south-west). Green spaces nearby include Sawyers Lake and Chafford Gorges Nature Park.

Map of Swanscombe © OpenStreetMap contributors

About our fire stopping in Swanscombe

Sealant is the specified answer for plenty of openings, such as metal pipes, cables and some small ducts where the detail covers them. Larger openings and some plastic pipes call for collars, wraps, batts or boards instead. If the detail calls for something other than sealant, we say so rather than force sealant into it. We work on cable penetrations, joints between fire-resisting walls and floors and small duct penetrations where the tested detail allows, and what we’re called in for most is service penetrations left open after M&E works and seals that don’t match their tested detail. Whoever orders the work in Swanscombe, the brief is normally the same: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

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

We sign every job off with a 12-month guarantee. It’s a plain promise: if our work fails within that year, we put it right.

Mastic Doctor team members lined up next to their branded vans outside an office building
Place
Swanscombe (DA9, DA10)
Wider area
Kent
Cover
A 12-month guarantee
Quote
Quoted before any work starts
Call
01277 525 020
Updated
3 November 2026

When something else is needed

Before quoting, we check that sealant is the right answer. It isn’t the answer for:

  • Plastic pipes whose detail calls for a collar or wrap
  • Fire doors, dampers or other fire safety equipment
  • Writing the fire-stopping specification

If you’re not sure, just give us a call on 01277 525 020 or send photos by email and we will give you a straight answer before you book.

What we seal

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

Aftercare for building managers

After handover, a little attention goes a long way:

  • Treat an open penetration as a priority repair
  • Keep general-purpose fillers away from compartment walls
  • Record which product was used where
  • Get seals inspected before ceilings and boxing close

Once the seals are in, tell other trades they exist and must not be disturbed. If a seal has to be opened for a new service, it should be reinstated to the same detail using the same product.

Specify fire stopping early on refits, not as an afterthought. Details can then be picked to suit the actual pipes, cables and ducts, and the work runs in step with the M&E.

Common problems we fix in Swanscombe

Mixing products or improvising a detail breaks the link with the test evidence. An oversized gap, too shallow a bead, missing backing or two makers’ products combined are the usual culprits.

Common reasons buildings call us in:

  • Fire sealant pulled out of the opening
  • Openings left by services added after handover
  • Unsealed joints where partitions meet the slab
  • Expanding foam used as fire stopping

Large healthcare estates like Darent Valley Hospital, 1.7 miles south-west of Swanscombe, change their services often, so penetration seals are worth checking after M&E work.

Questions to ask before you book

  • Proof of insurance
  • The named product and why it was chosen
  • Can the work be phased to keep areas open?
  • Will failed sealant be removed rather than covered?

How to choose a sealant contractor

Quoting for work in Swanscombe

To price the job, we consider:

  • Whether the work must be split into stages
  • Distance, for remote addresses
  • How much there is to seal
  • The size and state of each joint

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 and we will price your job on its own details.

What to include in your enquiry

It doesn’t need to be a full survey. These details are enough to start:

  • Photos of the joints, close up and from further back
  • The site address and postcode
  • Any specification or named product
  • Your programme or deadline

Quotes are fixed against the scope you send, so you know the figure before anyone is on site. To start the process, call the office on 01277 525 020 or use the quote form.

Why deal with it now?

Inspections and handover checks often pick up fire stopping. Finding unsealed or improvised openings late can hold up a programme. For buildings in places like Swanscombe, one well-planned visit beats several small ones, so we’d suggest renewing all the joints that are going, not just the worst.

A quote for service penetrations depends on how many there are, their condition and the access, and any specification that applies. Call for a quote.

Why appoint us

  • Work to your specification and the manufacturer’s guidance
  • Constructionline member
  • CHAS accredited contractor
  • A fixed quote before work starts

Take a look at our cost guide and how we’re accredited.

Your questions answered

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

References to BS 476 classes are being removed from Approved Document B from 2 September 2029, after which BS EN 13501-2 classification is the route, subject to transitional arrangements. The designer or fire engineer sets the specification, and we install the product to the manufacturer’s tested detail.

Can work at a site such as University of Greenwich fit around teaching?

Yes. Tell us the term dates, vacation periods and access windows, and we’ll plan the work around them. We’re CHAS accredited and a Constructionline member, and paperwork such as RAMS is confirmed with the quote.

Will you quote for a small job?

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

Can the sealant be colour-matched?

That depends on the product specified. Some ranges offer many colours, others very few, so we’ll confirm the colours available for the specified product with the quote.

Can the building stay open while you work?

Yes, as long as we plan it. We agree a sequence with your contact so just one area at a time is disrupted.

Do you work to architects’ specifications?

Yes. Include it with the drawings when you ask for a quote, and we will price the work to it.

How long does a job like this take?

We plan the time on site around your programme and access. We’ll give you an estimate of time on site when we quote.

Diagnose, treat, sign off

When we get to site, we report to your site contact and complete whatever induction the building runs. Floors, finishes and fittings next to the joints are covered before anything is cut or cleaned, and the work typically takes a single visit for a short list of penetrations, or a phased programme for a whole building. For a job in Swanscombe, the main thing is a clear picture of the work, so send photographs of each area. A fixed quote follows.

  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. We fit the backing the detail asks for, to the stated depth.
  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.

What we need from you

  • Arrange parking or a loading space
  • Agree which areas must stay open
  • Make sure the joints can be reached

Get a fixed quote

Every quote starts with the facts: the joints involved, quantities, access and the product called for. Share whatever details you have and we will fill any gaps with a visit.

Ask for a quote

Related advice

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