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

Fire stopping in Streatham Park

Work needed on a service penetration in Streatham Park? We look at it, seal it with the right product and hand it over with a 12-month guarantee.

  • Damaged fire seals in risers and voids
  • Non-fire-rated filler around services
  • Unsealed openings around new pipes and cables
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
South East, London & Scotland
Constructionline member
Fully insured: £5m PL

Fire stopping across Streatham Park

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

What we can’t put right

Not every problem is a sealant problem, and we’d rather tell you before you spend money. It won’t fix:

  • Plastic pipes whose detail calls for a collar or wrap
  • Issuing fire ratings or certificates for seals
  • Writing the fire-stopping specification

Not sure which it is? You can call 01277 525 020 or email the details over and we’ll tell you honestly before you book.

What we seal

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

Fire stopping in Streatham Park

Where pipes, cables and other services cross a compartment wall or floor, the opening around them has to be closed so fire and smoke can’t move between compartments. Our part is installing fire-rated and intumescent sealant at those openings and along linear gaps, where the specification calls for it. We work to the product’s tested detail for every seal. The enquiries we see most involve fire-rated sealant that has cracked or shrunk back and unsealed joints where partitions meet the slab, across cable penetrations, pipe penetrations and service gaps in risers. Searching for sealant specialists in Streatham Park? Mastic Doctor has worked for contractors, FMs and building owners since 2005, with CSCS-carded applicators.

In London, higher-risk residential buildings under the Building Safety Act bring extra scrutiny of fire-stopping records. Our part is installing the specified fire-rated sealant; tell us what records you need and we’ll confirm with the quote.

A 12-month guarantee applies to all our work in Greater London. Should something we installed fail, ring 01277 525 020 or send details through our quote form and we will come back to it.

Location
Streatham Park (SW16, SW17, SW12)
Wider area
Greater London
Cover
12 months on every job
Price
A fixed quote before we start
Phone
01277 525 020
Page updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

Common questions from Streatham Park clients

What does the BS 476 change mean for fire-rated sealant in Streatham Park?

From 2 September 2029, Approved Document B drops its BS 476 references in favour of BS EN 13501-2 classification, with transitional arrangements. Our part doesn’t change: the specified product, to its tested detail.

Can you work on a hospital site such as Springfield University Hospital?

Yes. We work in healthcare settings as well as offices and schools. Each area is agreed with the ward or department and the estates team in advance.

When is resealing likely to be due?

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

Will you come and look before quoting?

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

Do you take on multi-site work?

Yes. A group of buildings can go on one quote, with one point of contact across South East England, Greater London and Scotland.

When can the area be used after sealing?

Curing time varies by product, and we confirm it on the day, and sign any area that should be left alone.

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.

Should maintenance staff do it?

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.

Redoing a failed joint usually costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.

What sets the cost

What shapes the price:

  • Whether old sealant has to be cut out first
  • Which sealant the job calls for
  • How much there is to seal
  • Joint width, depth and condition

Small jobs and large programmes are priced from the same things: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote, and you will have a fixed figure to work with.

What we need to price the job

However big the job, these details speed things up:

  • Specification clauses that apply
  • A wide shot and a close-up of the area
  • Whether an asbestos survey exists
  • Your programme or deadline

A handful of photos and a postcode is the fastest way to a quote. Send them through the quote form, or speak to us on 01277 525 020 or email the details over to discuss it first.

Diagnose, treat, sign off

Inspect, seal, sign off: that’s the shape of every visit. 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. Most London premises stay occupied while we’re on site, so we agree zones and timings with the building or facilities manager. Areas are handed back as each section is finished.

  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.

Getting the site ready

  • Send asbestos survey details if the building is pre-2000
  • Warn occupants and staff about the work
  • Tell us your opening times and when work is allowed

Getting a fixed quote

Tell us about the building, the joints and when you need the work done, and a fixed quote will follow. To get it moving, call 01277 525 020 or send details through our quote form.

Get a price

Related advice

Surface 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.

Masonry and concrete

Core-drilled holes are neat; broken-out ones rarely are. Each gap is measured where it is widest so we know it sits within the tested range, and any that don’t are flagged.

When to call us in Streatham Park

Linear gaps fail where a fire-resisting wall meets a slab, soffit or another wall. Deflection and building movement can open these gaps, and a product not tested for that movement may crack. The tested detail for a linear joint states the width and movement it covers.

Clients normally get in touch after noticing something like this:

  • Damaged fire seals in risers and voids
  • Head-of-wall gaps with no fire seal
  • Non-fire-rated filler around services
  • Unsealed openings around new pipes and cables

Campus buildings at universities such as University of the Arts London (3.3 miles north of Streatham Park) see constant changes to data and services, and fire-rated sealant goes in around new penetrations where it is specified.

What your quote should include

  • How the joint faces will be prepared and primed
  • Who will actually carry out the work
  • Will RAMS and insurance details be available?
  • Whether old or failed sealant will be cut out, not overlaid

Questions to ask before you appoint anyone

Service penetrations in Streatham Park buildings

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. The 2 miles around Streatham Park include six care or nursing homes. Care settings depend on compartmentation, so service penetrations made during maintenance or refurbishment need sealing with the specified product.

At a college such as South Thames College Tooting Centre (1.1 miles west of Streatham Park), checking penetration seals after summer M&E works is good practice. Shop fits in centres such as Priory Retail Park (to the south-west of Streatham Park) can bring new services through fire-resisting walls between units, which then need the specified seal.

Streatham Park is about 1 mile west of Streatham, in Greater London. We cover Streatham Park and the rest of Greater London, with the same fixed quotes and 12-month guarantee as everywhere else. 764 places across Greater London fall within our area, including Streatham Park.

Anyone looking for fire stopping in SW16, SW17 and SW12 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. Among the streets we cover are Lewin Road, Rydal Road and Natal Road. We also cover Furzedown (1 mile south-west), Streatham (1 mile east), Tooting (1 mile west), Tooting Bec (1 mile west) and Hyde farm estate (1 mile north) for service penetrations. Further afield, our area takes in London (5 miles north), City of Westminster (6 miles north), Marylebone (6 miles north), Kensington (6 miles north-west), St Pancras (7 miles north) and Shoreditch (7 miles north).

Landmarks near Streatham Park

Recent enquiries here include premises near Furzedown Secondary School, Streatham Common and Graveney School. Streatham Park’s nearest station is Streatham station, roughly 0.5 miles east of the centre. Well-known places in the area include London Sewing Machine Museum (0.9 miles north-west) and Southside Wandsworth (2.9 miles north-west). For a walk, there’s Battersea Park Lake and Knight's Hill.

Map of Streatham Park © OpenStreetMap contributors
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