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

Fire Stopping in South Bermondsey

Planning work on a service penetration in South Bermondsey? We look at it, seal it with the right product and hand it over with a 12-month guarantee.

  • Service penetrations left open after M&E works
  • Fire sealant pulled out of the opening
  • Damaged fire seals in risers and voids
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
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
Covering the South East & Scotland
CHAS & Constructionline
£5m public liability

Fire stopping for South Bermondsey sites

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

Fire stopping for commercial buildings in South Bermondsey

A fire-rated sealant is only one part of a tested system: the evidence covers a specific product, wall or floor type, service, gap, depth and backing. We match each opening to that detail before any sealant goes in, and raise it with you if it falls outside. We work on cable penetrations, service gaps in risers and small duct penetrations where the tested detail allows, and what we are called in for most is unsealed openings around new pipes and cables and unsealed penetrations discovered above suspended ceilings. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in South Bermondsey, preparation and product choice get the time they need.

London has many occupied offices, blocks and mixed-use buildings where services are added and rerouted all the time. Each service penetration gets fire-rated or intumescent sealant if that’s what is specified, laid to the product’s tested arrangement.

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

Place
South Bermondsey (SE16, SE15, SE1)
Wider area
Greater London
Cover
A 12-month guarantee
Price
A fixed quote before we start
Telephone
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Leave it or put it right?

Open penetrations multiply: every new cable or pipe adds another. A schedule that is dealt with regularly stays manageable. In South Bermondsey, each extra visit means more notices, permits and disruption, so a proper job first time, with the old sealant fully removed, is worth it.

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.

What you get with us

  • One contact handling all your sites
  • Joints cleaned back to sound surfaces
  • A Constructionline member, so easy to vet
  • A fixed quote before work starts

Take a look at how commercial sealant jobs are priced or our accreditations.

What sealant work can’t fix

Some faults sit outside our scope, and we point that out rather than sealing over them:

  • Writing the fire-stopping specification
  • Fire risk assessments, a job for a competent assessor
  • Issuing fire ratings or certificates for seals

If you’re not sure, just call 01277 525 020 or send details through our quote form and we’ll give you a straight answer.

Joints and surfaces we work on

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

Service penetrations in South Bermondsey buildings

The 2 miles around South Bermondsey include two care or nursing homes. Care homes rely on fire-resisting walls and floors, and maintenance work that breaks through them leaves openings to seal. Fire stopping of openings and penetrations in England falls under Approved Document B. References to the older BS 476 classes are being removed from it from 2 September 2029, after which the European classification, BS EN 13501-2, is the route, subject to transitional arrangements. What we install is set by the specification, and it goes in to the tested detail.

In a retail centre such as Cantium Retail Park, 0.5 miles west of South Bermondsey, any fire-resisting wall between units that is crossed by new services needs sealing to the tested detail. Campus buildings at universities such as Northeastern University London, 1.5 miles north-west of South Bermondsey, see constant changes to data and services, and fire-rated sealant goes in around new penetrations where it is specified. At a college such as Southwark College, 1.3 miles south-west of South Bermondsey, checking penetration seals after summer M&E works is good practice.

South Bermondsey is about 2 miles north-west of New Cross, in Greater London. Our applicators travel to South Bermondsey for work on service penetrations. Across Greater London, 764 places are covered, South Bermondsey among them.

We take on service penetrations across the SE16, SE15 and SE1 postcode area, for business premises of every kind. Buildings on Tenda Road, Rolls Road and Simms Road are within our area for service penetrations. You will find South Bermondsey on or near the A2208. We also cover Surrey Canal (1 mile east), Surrey Quays (1 mile north-east), Bermondsey (1 mile north-west), Peckham (1 mile south) and Rotherhithe (1 mile north-east) for service penetrations. Further afield, our area takes in City of Westminster (4 miles north-west), Marylebone (4 miles north-west), Kensington (6 miles west), St Pancras (4 miles north-west), Shoreditch (3 miles north) and Walthamstow (7 miles north).

What’s near South Bermondsey

Around South Bermondsey, our work takes us to commercial buildings near The Kentish Drovers Public House, Paterson Park and City of London Academy. South Bermondsey has its own railway station: South Bermondsey station. Other landmarks nearby include New Cross Hospital (0.6 miles south-east) and Surrey Quays Shopping Centre (0.8 miles north-east). The countryside around South Bermondsey includes St. James's Park Lake and Tower Hill.

Map of South Bermondsey © OpenStreetMap contributors

On site: what to expect

Before any cutting starts, the area is protected: tape along each joint edge and covers over finishes, stock and equipment close by. The work itself typically takes longer where risers, ceiling voids or occupied floors have to be worked through in sequence, and our waste is bagged and taken away as we go. Planning a London job such as one in South Bermondsey starts with access. Send the building rules and access times with your enquiry.

  1. We ask for the product and detail your designer has specified.
  2. Openings are measured and grouped by detail.
  3. Improvised fillers and failed sealant are removed.
  4. Mineral wool or other backing is fitted where required.
  5. Fire-rated or intumescent sealant goes in around the services and is tooled off.
  6. We walk the completed areas with you and confirm the records agreed at quote stage.

What we need from you

  • Have the specification and drawings to hand
  • Share your working hours and any access restrictions
  • Point out any areas we must not close

Ask for a quote

Photos, drawings or a schedule of the joints and a fixed quote comes back to you. Where a site visit makes more sense, we will arrange one.

Get a price

Related advice

How the job changes by surface

Linear joints

Linear joints run along the head of a wall, at a slab edge or between two fire-resisting elements. BS EN 1366-4 testing sets the joint widths, depths, backing and movement a seal covers.

Cables and cable bundles

New data and power cables are the most common breach we see. Openings around new cables are resealed to the detail.

FAQs: South Bermondsey

How does the removal of BS 476 from Approved Document B affect fire-rated sealing in South Bermondsey?

Approved Document B loses its BS 476 references from 2 September 2029, and BS EN 13501-2 becomes the route, subject to transitional arrangements. Whichever applies, we install the specified product to its tested detail; the specification is for the designer to set.

Could you schedule work at a campus like Northeastern University London for the vacation?

Yes, holiday working periods are the norm on campus jobs. We’re CHAS accredited and a Constructionline member, and paperwork such as RAMS is confirmed with the quote.

How soon can the area be used again?

The product and site conditions decide that. Some take light use quickly, others need longer to cure, and we confirm it before leaving site.

Who decides which product is used?

The specification comes first, if there is one. Without one, the joint decides: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.

Will you just go over the old sealant?

No. We cut the old material out and clean the joint back before sealing, since fresh sealant will not bond reliably to aged material.

When is resealing likely to be due?

Nobody can honestly give a figure in years, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular inspection is the best way to catch problems early.

Does the weather affect the work?

For external joints, yes. The joint has to be dry and within the product’s temperature range, so frost, rain or cold mornings can delay outside work. Internal work is rarely affected.

What affects the price in South Bermondsey

Quotes vary with the job. Expect it to depend on:

  • Travel to remote or island sites
  • Induction, permit and paperwork requirements
  • Access and working height
  • Quantities, in metres or numbers

The price depends on how many linear metres there are, how much old material needs removing and how the joints are reached. Call for a fixed quote when you are ready.

What to include in your enquiry

The more we know, the firmer the quote. Helpful details to send:

  • Photos of the joints, close up and from further back
  • Rough lengths or quantities, or drawings if you have them
  • Whether an asbestos survey exists
  • Access details, including height

For a fixed quote, ring 01277 525 020 or use the quote form. Our quote form is another easy route.

After the work

Regular inspection catches problems early. In particular:

  • Flag new cables with no seal around them
  • Put resealing into every M&E and fit-out package
  • Get seals inspected before ceilings and boxing close
  • Check risers and ceiling voids after each round of works

During planned inspections, look at seals in risers, cupboards and voids. Look for cracks, unsealed new cables and gaps that have been enlarged.

The simplest way to keep compartment walls intact is to plan fire stopping into every job that crosses them. That way the opening is sealed while the trade and access are still there instead of being left for someone else.

Accreditations

Trusted. Accredited. Insured.