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

Fire stopping in Pitshanger

Sealant work in Pitshanger for main contractors, managing agents and facilities managers: fire-rated and intumescent sealing of service penetrations and linear gaps, quoted at a fixed price.

  • Old intumescent sealant that has split away
  • Seals disturbed by maintenance and left open
  • Penetration schedules that need working through
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
Constructionline member
Fully insured: £5m PL

Fire stopping for businesses in Pitshanger

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

Doing it in-house

There’s also the paperwork. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we’ll confirm the paperwork you need with the quote.

Using site staff can make sense for a small touch-up, but anything bigger is another matter: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.

Fire stopping in Pitshanger, done properly

Our applicators are CSCS-carded, and we are CHAS accredited and a Constructionline member. We don’t hold a third-party fire-stopping installer certificate and we’d rather say that up front. We install the specified fire-rated sealant to its tested detail, and our workmanship carries a 12-month guarantee. We work on cable penetrations, joints between fire-resisting walls and floors and pipe penetrations, and what we are called in for most is head-of-wall gaps with no fire seal and non-fire-rated filler around services. Most enquiries from Pitshanger start with one failed joint and grow into a wider look at the building: we look at the rest while we are there and tell you what we find.

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’ll hear it from us.

What our 12-month guarantee covers is the way we did the job: preparation, application and finish. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.

Location
Pitshanger (W5, W13, UB6)
Wider area
Greater London
Cover
12 months on our workmanship
Price
Fixed quote, scope in writing
Phone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

What sealant work can’t fix

A proper diagnosis includes knowing what sealant can’t do. We’ll tell you if the real problem is any of the following:

  • Openings that need collars, wraps, batts or boards rather than sealant
  • Reviewing a building’s overall fire safety
  • Deciding what a wall or floor needs, which belongs to the designer

If in doubt, call the office on 01277 525 020 or use the quote form and we’ll say what we think before you book.

Surfaces we seal

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

Quoting for work in Pitshanger

The price varies from site to site. It mainly depends on:

  • Location, for remote and island sites
  • Phasing around occupants
  • Backing rod, priming and other preparation
  • Removal of failed or old sealant

The specified product makes a difference, and so does the preparation, such as cutting out, priming or new backing rod. Access, phasing and site rules also count.

What to include in your enquiry

A few photos plus some basic facts will normally do. It helps to include:

  • The postcode of the building
  • Whether the building will be occupied during the work
  • Asbestos survey details if the building is older
  • Rough lengths or quantities, or drawings if you have them

If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price the work to it. Smaller jobs need nothing more than photos and a few notes.

Fire stopping in Pitshanger: the local picture

Pitshanger has plenty of hotels close by, all within 2 miles. In hotels, bedroom and corridor walls are typically fire-resisting, so services added in a refit need sealing with the specified product. In London buildings, frequent fit-outs and M&E changes are a common reason fire stopping gets breached. We seal to the specification and the product’s tested detail, working within the building’s permits.

Campus buildings at universities such as University of West London, 1 mile to the south of Pitshanger, see constant changes to data and services, and fire-rated sealant goes in around new penetrations where it is specified. Hospital estates such as Cygnet Hospital Ealing, 0.8 miles south-east of Pitshanger, are divided into fire compartments, and any service penetration through them should be sealed to the specified, tested detail. Offices at parks like Manhattan Business Park (to the north-east of Pitshanger) are re-cabled with each new tenant, and compartment walls need sealing afterwards to the tested detail.

Pitshanger is about 1 mile north of Ealing, in Greater London. We cover commercial sites throughout Pitshanger. Across Greater London, 764 places are covered, including Pitshanger. For work in that direction, see our London page (10 miles or so).

Commercial sites across W5, W13 and UB6 are covered. If your site is on Selby Road, Argyle Road and Kent Avenue or close by, we can quote for service penetrations. Just outside Pitshanger, we also work in Brentham Garden Suburb (1 mile east), Perivale (1 mile north), Ealing (1 mile south), Hanwell (2 miles south-west) and West Ealing (2 miles south-west). Bigger towns within reach include London (10 miles east), City of Westminster (7 miles east), Marylebone (7 miles east), Kensington (5 miles east), St Pancras (8 miles east) and Shoreditch (10 miles east).

What’s near Pitshanger

Recent enquiries here include premises near Brentham Clubhouse pub, St Benedict's School and Ealing Independent College and the streets around them. Pitshanger’s nearest station is Castle Bar Park station, about 0.8 miles west of the centre. Nearby you will also find Ealing Hospital (1.9 miles south-west) and London Designer Outlet (2.4 miles north-east). The countryside around Pitshanger includes Middle Lake and Fox Wood.

Map of Pitshanger © OpenStreetMap contributors

From enquiry to sign-off

Diagnose, treat, sign off: every visit follows that pattern. We inspect the joints and confirm what’s in scope, then the work is carried out to the specified product and detail, and the job ends with a walk round and sign-off. Planning a London job such as one in Pitshanger starts with access. Give us the hours we can be on site and we’ll schedule to suit.

  1. We read the specification, drawings or penetration schedule you send.
  2. Every penetration is compared with its detail: wall or floor type, service, gap size and depth.
  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

  • Let building users know which areas are affected
  • Confirm the product named in the specification
  • Tell us what induction or permit system the site runs

Quotes

Send us photos, drawings or a joint schedule are often enough for a fixed quote. If the job needs a look first, we’ll arrange a site visit.

Ask for a quote

Advice

Commercial clients in Pitshanger

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

Hotels, schools, healthcare sites, offices and retail units book us directly too. The work is planned around how the building runs, so the building keeps working while we do.

FAQs: Pitshanger

Can you work in a London building with booked loading and goods-lift slots?

Yes. Inductions, permits and timed loading are routine for us in London. Send the building rules and access times with your enquiry. All of Greater London is inside the ULEZ, and our planning allows for it

Does your area include sites such as Manhattan Business Park, near Pitshanger?

Yes, sites like Manhattan Business Park are within our area, along with the rest of Pitshanger. To start, just speak to us on 01277 525 020 or send details through our quote form with the unit, the joints involved and your access times.

Do you certify or sign off fire stopping?

No. Approval sits with the designer, principal designer or building control. We will confirm the product and detail installed.

Is the BS 476 change in 2029 relevant to fire stopping?

In England, references to the older BS 476 national classes are being removed from Approved Document B from 2 September 2029. After that, the European classification under BS EN 13501-2 is the route. Your designer will choose products with the right evidence.

Are you members of a third-party fire-stopping installer scheme?

No, and we won’t imply otherwise. Some clients require third-party installer schemes even though the law doesn’t. Where it isn’t required, we install the specified sealant to the maker’s details.

Will fire-rated sealant work on every penetration?

No. Sealant is the right product only where the tested detail says so. Collars, wraps, batts and boards exist for openings sealant doesn’t cover, and we’ll tell you when that applies.

How long will the new sealant last?

There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Treat them as maintenance items and inspect them regularly.

Keeping the joints sound

A few simple habits keep the new joints working:

  • Put resealing into every M&E and fit-out package
  • Report damaged or disturbed seals as soon as they’re spotted
  • Keep general-purpose fillers away from compartment walls
  • Have penetrations checked while they can still be seen

After the work, brief anyone else working in the area that the openings are now sealed. Any seal cut back for a new service needs reinstating to its tested detail.

Ask every contractor who works in risers or voids to report openings they create. It costs little and catches breaches early.

Accreditations

Trusted. Accredited. Insured.