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

Fire Stopping in Middle Park

Fire-rated and intumescent sealing of service penetrations and linear gaps throughout Middle Park and nearby, carried out by CSCS-carded applicators. Fully insured and CHAS accredited.

  • Damaged fire seals in risers and voids
  • Unsealed openings around new pipes and cables
  • Unsealed joints where partitions meet the slab
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
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
London, the South East & Scotland
Constructionline member
£5m public liability

Fire stopping near Middle Park

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

When to call us in Middle Park

Mixing products or improvising a detail breaks the link with the test evidence. Gaps beyond the tested size, shallow sealant, no backing where it was needed, or products from different systems mixed together are what we find most often.

What tends to prompt an enquiry:

  • Unsealed joints where partitions meet the slab
  • Seals that don’t match their tested detail
  • Fire-stopping items raised at inspection or handover
  • Service penetrations left open after M&E works

Large healthcare estates like Eltham Community Hospital (to the north-east of Middle Park) change their services often, so penetration seals are worth checking after M&E work.

Before you book anyone

  • Are they CHAS accredited or on Constructionline?
  • Will CSCS-carded applicators be on site?
  • Their public liability cover
  • How they handle RAMS and site documents

Our contractor checklist

How we handle fire stopping in Middle Park

Sealant is the specified answer for plenty of openings, such as metal pipes, cables and some small ducts where the detail covers them. Other openings need collars, wraps, batts, pillows or boards. We use sealant where it is the specified product, and we tell you when a detail calls for something else. We work on cable penetrations, joints between fire-resisting walls and floors and pipe penetrations, and the failures we’re asked to look at most are snag lists that include open service penetrations and service penetrations left open after M&E works. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in Middle Park, preparation and product choice get the time they need.

After a fit-out or new cabling in a London building, risers and ceiling voids are where open service gaps tend to be found. Fire-rated sealant goes in where it’s the specified item; where a collar, wrap or batt is called for instead, we flag it.

Work we carry out in Greater London comes with a 12-month guarantee. Should something we installed fail, give us a call on 01277 525 020 or use the quote form and we’ll come back to it.

The Mastic Doctor team beside their liveried vans in front of an office building
Where
Middle Park (SE9, SE12)
Wider area
Greater London
Cover
12 months on every job
Quotes
A fixed quote before we start
Telephone
01277 525 020
Page updated
3 November 2026

How the job changes by surface

Plastic pipes

Plastic waste pipes through slabs come up often. Whether sealant alone is acceptable depends entirely on the tested detail, and we won’t substitute it for a specified collar.

Drylining partitions

Drylined fire walls are tested in a particular build-up. We check that the product’s detail covers that partition type and board thickness.

Where services cross fire walls in Middle Park

The area within 2 miles of Middle Park holds a number of hotels. A hotel refit often runs new services through compartment walls between bedrooms and corridors, and each opening needs the specified seal. The 2 miles around Middle Park include six care or nursing homes. Where new services have gone through compartment walls in a care setting, the gaps need the specified product.

Shop fits in centres such as Lewisham Shopping Centre, 2.5 miles to the north-west of Middle Park, can bring new services through fire-resisting walls between units, which then need the specified seal. Workshops and IT rooms at colleges like Hadlow College, 0.5 miles to the south-west of Middle Park, are re-serviced often, leaving penetrations to seal.

Middle Park is about 1 mile west of Eltham, in Greater London. Looking for fire stopping in Middle Park? We can help, as we do across Greater London. 764 places across Greater London fall within our area, including Middle Park. Sites around London have their own page, about 7 miles away.

Business premises anywhere in SE9 and SE12 are within our area. For a building on Horsa Road, Court Road and Sidcup Road or nearby, send details and we will quote for service penetrations. Access to Middle Park is via the A20 among other routes. Close to Middle Park, our area also takes in Horn Park (1 mile west), Eltham (1 mile east), Mottingham (1 mile south), Well Hall (1 mile north-east) and Chinbrook (1 mile south). Further afield, our area takes in London (7 miles north-west), City of Westminster (10 miles north-west), Marylebone (9 miles north-west), Kensington (11 miles west), St Pancras (9 miles north-west) and Shoreditch (8 miles north-west).

Local landmarks in Middle Park

Locally, jobs take us to sites close to Harris Academy Greenwich, Horn Park and The Banker's Draft pub. For rail, the closest station is Mottingham station, roughly 0.5 miles south-east. Well-known places in the area include Greenwich Castle (2.9 miles north-west) and Prefab Museum (1.9 miles west). The countryside around Middle Park includes Summer Hill and The Tarn.

Map of Middle Park © OpenStreetMap contributors

Your questions answered

Do you work in occupied care homes around Middle Park?

Yes. We agree rooms and times with the manager and work a few areas at a time. Tell us about any infection-control or safeguarding requirements and we’ll work to them.

Do you work in London buildings with loading restrictions?

Yes, we plan every London job around the building’s own access rules. Say when the building is occupied and when it’s quiet, and we will plan accordingly.

What if there’s asbestos in the old mastic?

Some older mastics, especially in pre-2000 buildings, can contain asbestos. Before we disturb old sealant in an older building, we ask to see the asbestos register or survey, and work stops until any suspect material has been tested. Removing asbestos is a job for asbestos specialists, not us.

Is fire stopping in Scotland covered by different guidance?

Scotland sets its own building regulations, with Technical Handbooks, and England uses Approved Document B. Wherever the site is, our work follows the specification and the tested detail.

Do you cover Middle Park?

Yes. Sites across Middle Park are covered, and the same phone number covers every area.

Is your workmanship covered by a guarantee?

Yes. Our workmanship is backed for 12 months on every job.

Will you sign off the seals for us?

No. We don’t certify or sign off fire stopping, and we hold no third-party fire-stopping installer certificate. We work to the specification and the manufacturer’s installation guidance, and any records you need can be confirmed with the quote.

Maintenance after handover

Regular inspection catches problems early. In particular:

  • Flag new cables with no seal around them
  • Leave fire sealant to cure fully before covering it
  • Don’t let anyone top up a fire seal with the wrong product
  • Record which product was used where

New services after handover are a common way fire stopping gets breached. A short check at the end of each job saves a long hunt later.

Looking at service areas on a regular cycle pays off. Catching a damaged seal early keeps the fix small.

Diagnose, treat, sign off

On arrival, we sign in, go through any site induction and check how permits are handled. Everything around the joints gets protected before anything is cut or cleaned, with the work itself normally taking longer where risers, ceiling voids or occupied floors have to be worked through in sequence. Most London premises stay occupied while we’re on site, so we agree zones and timings with the building or facilities manager. Phased work keeps the rest of the building in use.

  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. Mineral wool or other backing is fitted where required.
  5. We gun the sealant in to the specified depth around each service and tool it.
  6. We walk the completed areas with you and confirm the records agreed at quote stage.

Getting the site ready

  • Tell us what induction or permit system the site runs
  • Clear stock, furniture or equipment away from the joints
  • Send any specification or drawings in advance

Quotes

Send us photographs, drawings or a joint schedule are often enough for a fixed quote. Where a site visit makes more sense, we will arrange one.

Get a quick quote

Advice

Doing it in-house

General builders and handymen seal joints, but it isn’t their main trade. A specialist prepares properly, controls joint depth and picks a product with the right movement class.

A short, simple internal joint is often within reach of a maintenance team. Where it goes wrong is preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.

What we can’t put right

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

  • Walls or floors that aren’t fire-resisting to begin with
  • Openings that need collars, wraps, batts or boards rather than sealant
  • Deciding what a wall or floor needs, which belongs to the designer

If in doubt, give us a call on 01277 525 020 or email drawings and photos and we’ll say what we think.

What we seal

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

Trusted. Accredited. Insured.