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

Fire-rated sealing and fire stopping in Kidbrooke, Greater London

We carry out fire-rated and intumescent sealing of service penetrations and linear gaps in Kidbrooke and the surrounding area. Send photos or drawings for a fixed quote.

  • Fire seals cut back for extra cables and never reinstated
  • Fire sealant pulled out of the opening
  • Unsealed joints where partitions meet the slab
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
South East, London & Scotland
CHAS accredited
Fully insured: £5m PL

Fire stopping for Kidbrooke sites

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

About our fire stopping in Kidbrooke

Fire-rated sealant suits many small service penetrations: copper and steel pipes, cables and some small ducts where the tested detail allows. Other openings need collars, wraps, batts, pillows or boards. If the detail calls for something other than sealant, we say so rather than force sealant into it. Most enquiries involve damaged fire seals in risers and voids and non-fire-rated filler around services, across pipe penetrations, service gaps in risers and small duct penetrations where the tested detail allows. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in Kidbrooke, preparation and product choice get the time they need.

Fit-outs and M&E works in London buildings often leave service penetrations open behind ceilings and in risers. If sealant is the specified product we fit it to its tested detail, and if the detail needs something else, you will hear it from us.

Work we carry out comes with a 12-month guarantee. Should something we installed fail, call 01277 525 020 or email the details over and we will come back to it.

Location
Kidbrooke (SE3, SE9, SE18)
Region
Greater London
Guarantee
12 months on our workmanship
Quote
Quoted before any work starts
Telephone
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

On site: what to expect

Before we leave any area, the masking comes off, the area is cleaned and every joint is checked. Where the sealant needs time to cure before use, we tell you and sign the area. The ULEZ covers the whole of Greater London, and parking near a job is rarely simple. If there’s a loading bay, a car park or a permit we can use, tell us when you send details.

  1. First we confirm the product and tested details named in the specification.
  2. We sort the openings by the detail each one needs.
  3. Old or wrong materials are cut out.
  4. Where the detail needs backing, it goes in at the stated depth.
  5. Fire-rated or intumescent sealant goes in around the services and is tooled off.
  6. Completed areas are checked with you, with the records agreed when we quoted.

What we need from you

  • Share the asbestos register for older buildings
  • Share your working hours and any access restrictions
  • Point out any areas we must not close

Request a quote

A handful of photos and a postcode is the fastest way to a quote. Upload them with the quote form, or give us a call on 01277 525 020 or email a schedule or drawings to discuss it first.

Get a price

Related advice

FAQs: Kidbrooke

Can you seal around new services in a hotel near Kidbrooke?

Yes, where the specification calls for fire-rated sealant. Work is done room by room so the hotel keeps trading; design and sign-off stay with the designer and building control.

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

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

Can you quote from photographs?

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

Do you seal on top of existing sealant?

No. We cut the old material out and clean the joint back before sealing, because fresh silicone will not bond with aged silicone.

Can you work while the building is occupied?

Yes, with some planning. We agree a sequence with your contact so just one area at a time is disrupted.

Does weather matter for sealant work?

For external joints, yes. Sealant needs a dry joint and a temperature within the product’s range, so frost, rain or cold mornings can delay outside work. Inside work is seldom held up.

Do you guarantee your work?

Yes. Workmanship is guaranteed for 12 months on every job.

When to bring in a specialist

What you see is the finished bead, but most of the work is hidden. Correct depth, the right primer and a sealant matched to the movement are easy to get wrong without experience.

Using site staff can make sense for a small touch-up, but larger jobs are different: a specialist brings efficiency, a consistent finish and a 12-month guarantee.

When it isn’t the sealant

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

  • Plastic pipes whose detail calls for a collar or wrap
  • Reviewing a building’s overall fire safety
  • Deciding what a wall or floor needs, which belongs to the designer

If in doubt, ring 01277 525 020 or email drawings and photos and we will say what we think.

Joints and surfaces we work on

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

Cost factors for service penetrations

There’s no standard rate for sealant work, because every site is different. What we look at:

  • Induction, permit and paperwork requirements
  • Travel to remote or island sites
  • Working within restricted access windows
  • Access and working height

We don’t publish prices, since every building and every scope is different. For a fixed figure, call for a quote and we will price your job on its own details.

What to include in your enquiry

However big the job, the same details help:

  • What the building is and how it’s used
  • The asbestos register, for older buildings
  • Where the site is, with the postcode
  • Drawings or a marked-up plan, if available

Let us know the site, the scope and your timescale, and we will put a fixed quote together. To get it moving, call the office on 01277 525 020 or email us.

Signs you need fire stopping in Kidbrooke

Head-of-wall joints and wall-to-wall junctions are frequent weak points. Movement in the frame or slab can open the joint. The tested detail for a linear joint states the width and movement it covers.

Any of the following is a good reason to get the joints checked over:

  • Fire-rated sealant that has cracked or shrunk back
  • Builders’ foam or ordinary silicone in compartment walls
  • Snag lists that include open service penetrations
  • Improvised or mixed-product fire seals

Residences at universities like University of Greenwich - Avery Hill (to the south-east of Kidbrooke) have compartment walls that must be resealed whenever services change.

Questions to ask before you book

  • How long is the guarantee, and what does it include?
  • How they’ll work around occupants
  • Are they CHAS accredited or on Constructionline?
  • Will RAMS and insurance details be available?

Our contractor checklist

Work for main contractors and building owners

If you look after buildings for someone else, clear figures and clear communication matter. You get a fixed quote, an agreed scope and a walk round at the end.

As a CHAS accredited contractor and Constructionline member, we’re straightforward to vet for your supplier list. Our insurance certificate can be sent along with the quote.

Fire stopping around Kidbrooke: points for this area

Kidbrooke has several hotels close by, all within 2 miles. Hotels are divided into compartments, and refurbishments that add pipes and cables through bedroom and corridor walls leave gaps to close. With tenants changing and fit-outs following, London buildings see service routes altered again and again. Where fire-rated sealant is specified, we install it to the tested detail under the building’s permit-to-work arrangements.

Shop fits on retail sites such as Stone Lake Retail Park, 1.7 miles to the north of Kidbrooke, can bring new services through fire-resisting walls between units, to be sealed with the specified product. Workshops and IT rooms at colleges like Shooters Hill Sixth Form College (1.1 miles north-east of Kidbrooke) are re-serviced often, leaving penetrations to seal.

Kidbrooke is about 2 miles north of Eltham, in Greater London. We cover Kidbrooke and the rest of Greater London, with the same fixed quotes and 12-month guarantee as everywhere else. Kidbrooke is one of 764 places in Greater London on our list for service penetrations. For work in that direction, see our London page (6 miles or so).

Commercial sites across SE3, SE9 and SE18 are covered for service penetrations. For a building on Brome Road, Briset Road and Nesbit Road or nearby, we can quote for service penetrations. We also cover Well Hall (1 mile south-east), Shooter's Hill (1 mile east), Middle Park (1 mile south), Horn Park (1 mile south-west) and Blackheath (1 mile west). Further afield, our area takes in London (6 miles west), City of Westminster (9 miles west), Marylebone (9 miles north-west), Kensington (11 miles west), St Pancras (8 miles north-west) and Shoreditch (7 miles north-west).

Landmarks near Kidbrooke

We work on buildings around Thomas Tallis School, The Halley Academy and Eltham Common, among other places. For rail, the closest station is Kidbrooke station, about 0.7 miles west. A little further out are Brook General Hospital (0.5 miles north-east) and Lewisham Shopping Centre (2.4 miles west). Not far away are Birdbrook Road Nature Reserve and Summer Hill.

Map of Kidbrooke © OpenStreetMap contributors
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