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

Fire stopping in Chiswick

Planning work on a service penetration in Chiswick? We assess it, carry out the work and guarantee our workmanship for 12 months.

  • Fire-rated sealant that has cracked or shrunk back
  • Open linear gaps along the top of fire-resisting walls
  • Improvised or mixed-product fire seals
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 PL insurance

Fire stopping for Chiswick sites

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

Fire stopping in Chiswick, done properly

We are commercial sealant applicators, CHAS accredited and a Constructionline member, with CSCS-carded applicators on site. We don’t hold a third-party fire-stopping installer certificate, and we won’t pretend otherwise. What we offer is careful installation of the specified sealant to its tested detail, with a 12-month guarantee on our workmanship. We work on small duct penetrations where the tested detail allows, joints between fire-resisting walls and floors and cable penetrations, and the failures we’re asked to look at most are unsealed joints where partitions meet the slab and non-fire-rated filler around services. Most enquiries from Chiswick start with one failed joint and grow into a wider look at the building: we check the joints around it and give you an honest view of what needs doing now and what can wait.

In a London area such as Chiswick, buildings are refitted often, and every new cable, pipe or duct through a fire-resisting wall or floor leaves a gap. Where the specification names fire-rated sealant, it goes in exactly as the manufacturer’s test evidence shows for that wall or floor.

Every job ends the same way: guaranteed. You get a 12-month guarantee on our workmanship, and we explain exactly what that covers when we quote.

The Mastic Doctor team beside their liveried vans in front of an office building
Place
Chiswick (W4, SW14)
Region
Greater London
Cover
12 months on every job
Quotes
A fixed quote before we start
Telephone
01277 525 020
Last updated
3 November 2026

Quoting for work in Chiswick

Your fixed quote is built from the real scope. It allows for:

  • Backing rod, priming and other preparation
  • Whether the work must be split into stages
  • Induction, permit and paperwork requirements
  • Quantities, in metres or numbers

The price depends on the quantity of joints, what has to come out first and how the joints are reached. Call for a quote when you are ready.

Details that help us quote

Whether it’s one area or a whole building, these details speed things up:

  • Any specification or named product
  • When you need the work done
  • Rough lengths or quantities, or drawings if you have them
  • The site address and postcode

Send details, get a quote, we seal, guaranteed: that’s how every job runs. To take the first step, call the office on 01277 525 020 or send photos by email.

Common questions from Chiswick clients

Do you seal service penetrations in hotels around Chiswick?

Yes. We install fire-rated and intumescent sealant where it is specified. It goes in to the manufacturer’s tested detail for the wall or floor and the services passing through, and we’ll tell you if the detail calls for a collar, wrap or batt instead.

Is Kew Retail Park, near Chiswick, within your area?

Yes. Our area takes in Chiswick and its surroundings, with estates and business parks such as Kew Retail Park included. Send details of the unit and the work through our quote form for a quick quote.

How do you deal with asbestos in old sealant?

The duty to manage asbestos sits with the building’s dutyholder, so for older buildings we ask for the asbestos register first. Work pauses if suspect material is found, until it has been tested.

Do you guarantee your work?

Yes. The 12-month guarantee covers our preparation and application, but not damage, misuse or other trades’ work.

Can you handle several sites?

Yes. Several buildings can share a single quote, with one point of contact across South East England, Greater London and Scotland.

Do you need to see the site first?

Many jobs can be quoted from photographs, drawings or a joint schedule. Where they aren’t, we arrange a site visit before quoting.

When can you be on site?

We are in the office from 8am until 5pm, Monday to Friday. Let us know your site hours and access windows, and the work will be planned around them.

After the work

After handover, these steps help:

  • Treat an open penetration as a priority repair
  • File the specified details where the next contractor can find them
  • Don’t let anyone top up a fire seal with the wrong product
  • Check with the data sheet before painting over fire sealant

Store the specified product details somewhere the next contractor can find them. It makes later repairs much easier to match.

A simple record of seal locations and products helps. When a new service goes through, everyone knows which product and detail to match, which saves guesswork.

Fire stopping around Chiswick: what changes locally

Chiswick has a good number of hotels close by, all within 2 miles. Bedroom-to-corridor walls in hotels are normally fire-resisting, so new cabling or pipework through them has to be sealed to the tested detail. With tenants changing and fit-outs following, London buildings see service routes altered again and again. We install fire-rated sealant where it is specified and work within the building manager’s permit system.

Workshops and IT rooms at colleges like Ealing and West London College, 2.6 miles north-west of Chiswick, are re-serviced often, leaving penetrations to seal. For a hotel such as Chiswick Lodge Hotel, which lies north of Chiswick, penetration seals are worth checking after any refit or services upgrade.

Chiswick is about 1 mile south of Acton, in Greater London. Anywhere in W4, it works the same way: details in, fixed quote out, then sealing and a 12-month guarantee. We work across 764 places in Greater London, from busy centres to rural villages. Sites around London have their own page, about 7 miles away.

If you need fire stopping in W4 and SW14, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. Buildings on Pumping Station Road, Dale Street and Devonshire Road are within our area. If your building is just outside Chiswick, we cover Turnham Green (1 mile south), Old Chiswick (1 mile south-east), Grove Park (1 mile south-west), Gunnersbury (1 mile west) and Strand-on-the-Green (1 mile west). Further afield, our area takes in London (7 miles east), City of Westminster (5 miles east), Marylebone (5 miles east), St Pancras (6 miles north-east), Shoreditch (8 miles east) and Walthamstow (12 miles north-east).

Around Chiswick

Around Chiswick, our work takes us to commercial buildings near Polish Library POSK in London, Mawson Arms and Chiswick School. Also close by are Turnham Green (0.5 miles west) and The Swedish School (0.6 miles south-east). Chiswick’s nearest station is Chiswick station, about 0.8 miles south-west of the centre. Nearby you’ll also find West London Hospital (1.5 miles east) and Kurdish Museum Library and Archive (0.8 miles east). The countryside around Chiswick includes Campden Hill and Duke's Hollow.

Map of Chiswick © OpenStreetMap contributors

Diagnose, treat, sign off

Diagnose, treat, sign off: that’s the shape of every visit. First comes an inspection and agreement on scope, then the work is carried out to the specified product and detail, and we finish with a walk round so the work can be signed off. Most London premises stay occupied while we are 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. The specification and schedule come first, so we know which details apply.
  2. Access, permits and the order of areas are agreed with the site team.
  3. Each opening is checked for wall or floor type, service, gap and depth.
  4. Unsuitable material is removed and the opening cleaned.
  5. The specified backing and sealant go in to depth and are finished neatly.
  6. We tell you about openings that need a different product.

What we need from you

  • Point out parking and an unloading spot
  • Flag any permit to work we’ll need
  • Share the asbestos register for older buildings

Ask for a quote

A good quote starts with a clear picture: the joints involved, quantities, access and the product called for. Send what you have, and we’ll arrange a site visit if anything is unclear.

Get a price

Read more

Do you need fire stopping in Chiswick?

A common fault is a product that was never fire-rated in the first place: expanding foam or a general-purpose sealant pushed into a gap to tidy it. It may look closed, but it has no tested fire performance in that position, so it has to come out.

These are often picked up first by site or facilities staff:

  • Openings found when ceilings come down for a refit
  • Snag lists that include open service penetrations
  • Openings left by services added after handover
  • Fire stopping installed outside its tested range

Residences at universities like Richmond American University London (to the west of Chiswick) have compartment walls that must be resealed whenever services change.

What to look for in a quote

  • What the guarantee covers, and for how long
  • Whether their applicators hold CSCS cards
  • Can the work be phased to keep areas open?
  • How they handle RAMS and site documents

Questions to ask before you appoint anyone

What we can’t put right

A few problems need another trade or a different fix, and we say so rather than covering them up:

  • Issuing fire ratings or certificates for seals
  • Construction that lacks the fire resistance the seal relies on
  • Large openings beyond what any sealant detail covers

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

Surfaces we seal

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

What happens if it’s left?

An improvised seal can look finished while offering no tested performance. Correcting it means cutting it out and starting again with the specified product, and doing it once, properly, is cheaper. Failed sealant in a building in Chiswick can quickly affect neighbours, tenants or the floor below: water travels through shared structures, and a small leak becomes a dispute between occupiers. Dealing with it early is simpler for everyone.

Larger quantities, tricky access or phasing all shape the price. Site requirements like inductions and permits play a part as well, along with the time of year for external work.

Why us?

  • Sealing commercial buildings since 2005
  • Fixed quotes based on photos, drawings or a visit
  • Work carried out by CSCS-carded applicators
  • One phone line for London, the South East and Scotland

Take a look at what affects the cost or how we’re accredited.

Accreditations

Trusted. Accredited. Insured.