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

Fire Stopping in Lower Rainham

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

  • Unsealed penetrations discovered above suspended ceilings
  • Snag lists that include open service penetrations
  • Unsealed openings around new pipes and cables
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
Scope agreed and priced before anything starts.
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
CHAS & Constructionline
£5m public liability

Fire stopping near Lower Rainham

Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.

Questions we’re asked in Lower Rainham

What happens to BS 476 references for fire stopping in Lower Rainham?

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. Our part doesn’t change: the specified product, to its tested detail.

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

Yes. We plan campus work around teaching, exams and residence turnarounds. We are CHAS accredited and a Constructionline member, and paperwork such as RAMS is confirmed with the quote.

Can you work to our specification?

Yes. We follow the specification, along with the manufacturer’s installation guidance, and any queries are raised before we start.

Are you CHAS accredited?

Yes. Mastic Doctor is CHAS accredited and a Constructionline member, which helps with supplier vetting.

Can you quote from photos?

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

Can staff carry on working while you’re here?

Yes, as long as we plan it. Tell us your site hours and access windows and we’ll plan around them.

What’s the quickest route to a quote?

You can use the quote form on this site; alternatively, speak to us on 01277 525 020 or use the quote form. Photos, drawings or a joint schedule help us quote quickly.

Fire stopping in Lower Rainham, done properly

It helps to set out our role at the start. The designer, fire engineer or building control decides which fire stopping is required; sign-off sits with them too. What we bring is careful installation of the specified sealant, to the maker’s guidance. Site teams most often ask us about non-fire-rated filler around services and fire-stopping items raised at inspection or handover, across pipe penetrations, joints between fire-resisting walls and floors and cable penetrations. Facilities teams, main contractors and managing agents in Lower Rainham tend to want the same three things: a clear scope, tidy work and joints that don’t fail again.

A job near Lower Rainham is normally planned around one visit, so send the specification and photos first. Design and sign-off belong to the designer or building control; we install what’s specified.

A 12-month guarantee applies to all our work in Medway. If an installation problem shows up, ring 01277 525 020 or send photos by email and we will arrange a return visit.

The Mastic Doctor team beside their liveried vans in front of an office building
Place
Lower Rainham (ME8)
Wider area
Medway
Guarantee
12 months on every job
Quote
Quoted before any work starts
Telephone
01277 525 020
Updated
3 November 2026

After the work

Problems stay small when the joints are checked regularly. In particular:

  • Look above ceilings when tiles are lifted for other jobs
  • File the specified details where the next contractor can find them
  • Treat an open penetration as a priority repair
  • Brief every trade that openings they make must be sealed

During planned inspections, look at seals in risers, cupboards and voids. Watch for cracked sealant, new services with no seal and openings that have grown, and report them promptly.

On fit-outs, get the fire-stopping specification agreed before the services go in. Details can then be picked to suit the actual pipes, cables and ducts.

Different surfaces, different methods

Metal pipes

Copper and steel pipes are a common service penetration for fire-rated sealant. The tested detail sets the pipe size range, gap, depth and whether insulation can stay on, so we check each one.

Risers and ceiling voids

Openings above suspended ceilings are easy to miss. We work through the areas on your schedule methodically and tell you about openings outside the list.

What we can’t put right

We check first that sealant really is the fix. It won’t put right:

  • Reviewing a building’s overall fire safety
  • Large openings beyond what any sealant detail covers
  • Deciding what a wall or floor needs, which belongs to the designer

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.

Where we work in Lower Rainham

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

Leave it or put it right?

An open or wrongly sealed service penetration lets fire and smoke reach the next compartment much sooner than the building was designed for. While the openings can be reached, sealing them is normally straightforward. Left until ceilings are closed or a tenant moves in, the same work costs more access and more disruption. Halls, stores and units around places like Lower Rainham 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, as does the preparation each joint needs, from cutting out to priming and backing rod. Access, phasing and site requirements come into it too.

Why us?

  • Health and safety: CHAS accredited
  • One number for every site we cover
  • CSCS-carded applicators
  • Public liability insurance in place

Read how commercial sealant jobs are priced or how we’re accredited.

For managing agents and facilities managers

For main contractors, we work as the sealant subcontractor on new-build and refurbishment projects. Programme, specification and site rules come first, with CSCS-carded applicators on site.

Agents, factors and owners’ representatives all follow the same route: send the details, accept a fixed quote, and we carry out and guarantee the work. We can agree access arrangements and keyholder contacts beforehand.

Penetration seals near Lower Rainham

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. Our part stays the same: the specified product, installed to its tested detail. Central London is about 32 miles from Lower Rainham. 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.

Older community buildings such as Church of St Margaret that have been rewired or given new heating can have service gaps through walls worth checking against the specification. Hospital estates such as Medway Maritime Hospital, 3 miles to the west of Lower Rainham, are divided into fire compartments, and any service penetration through them should be sealed to the specified, tested detail. For a hotel such as The Green Lion Hotel (1 mile south of Lower Rainham), penetration seals are worth checking after any refit or services upgrade.

Lower Rainham is about 2 miles east of Gillingham, in Medway. We cover Lower Rainham and the rest of Medway, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Our Medway coverage takes in 54 places, large and small. Sites around London have their own page, about 32 miles away.

Anyone looking for fire stopping in ME8 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. Among the streets we cover are West Motney Way, Motney Hill Road and Nuthatch Place, and sites on any of them can send details for a fixed quote. Close to Lower Rainham, our area also takes in Rainham (1 mile south), Moor Street (1 mile south-east), Upchurch (1 mile east), Meresborough (2 miles south) and Breach (2 miles south-east). Nearby towns on our patch include Chatham (4 miles west), Rochester (5 miles west), Strood (6 miles west), Luton (3 miles west), Lordswood (4 miles south-west) and Hoo St Werburgh (4 miles north-west).

Local landmarks in Lower Rainham

Around Lower Rainham, our work takes us to commercial buildings near The Three Mariners pub, Howard School and Berengrave Chalk Pit, among other places. Lower Rainham’s nearest station is Rainham (Kent) station, roughly 0.7 miles south. Nearby you will also find Medway Maritime Hospital (3 miles west) and Upnor Castle (4.2 miles north-west). Not far away are Bishop Saltings.

Map of Lower Rainham © OpenStreetMap contributors

How a job runs

When we get to site, we report to your site contact and complete whatever induction the building runs. Everything around the joints gets protected before anything is cut or cleaned, and the work normally takes a single visit for a short list of penetrations, or a phased programme for a whole building. Smaller jobs around Lower Rainham can be grouped with others nearby, which keeps travel down. You’ll have a fixed quote before work starts.

  1. We read the specification, drawings or penetration schedule you send.
  2. On site, each opening is checked against the tested detail it is meant to follow.
  3. Unsuitable fillers and loose debris are taken out of each opening.
  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. Openings that need a collar, wrap, batt or other product are flagged to you rather than filled with sealant.

Preparing the site

  • Have the specification and drawings to hand
  • Agree which areas must stay open
  • Flag any permit to work we will need

Quotes

Send details, get a quote, we seal, guaranteed: that’s how every job runs. The first step is to speak to us on 01277 525 020 or email a schedule or drawings with what you know.

Get a quick quote

Advice

Accreditations

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