The Mastic Doctor team standing beside their branded vans outside an office building
Windsor and Maidenhead · England

Fire Stopping in Cheapside

Looking for fire stopping in Cheapside? Send us the details for a fixed quote, backed by a 12-month guarantee on the work.

  • Unsealed penetrations discovered above suspended ceilings
  • Damaged fire seals in risers and voids
  • Unsealed openings around new pipes and cables
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
12-month guarantee on our workmanship.
South East, London & Scotland
CHAS accredited
Fully insured: £5m PL

Fire stopping near Cheapside

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

What the job involves on each surface

Metal pipes

Copper and steel pipes are a common service penetration for fire-rated sealant. The tested detail sets the pipe size range, gap, depth and whether insulation can stay on and we confirm each before sealing.

Small ducts

Ducts are only sealed with sealant where the detail allows it. Dampers and ductwork systems themselves are outside our work.

About our fire stopping in Cheapside

No fire sealant works on its own: its test evidence covers one product in one kind of wall or floor, with set services, gaps, depths and backing. Before we seal anything, we check the opening against the detail it is meant to follow, and we say so if it doesn’t fit. Site teams most often ask us about service penetrations left open after M&E works and seals that don’t match their tested detail, across small duct penetrations where the tested detail allows, joints between fire-resisting walls and floors and cable penetrations. A single leaking joint is often how a building in Cheapside first comes to us: we check the joints around it and give you an honest view of what needs doing now and what can wait.

Smaller places such as Cheapside still have buildings with fire-resisting walls and floors: schools, halls, care homes and commercial conversions. Any service penetration through those walls should be closed with the specified product, set out as its test evidence shows.

Our workmanship is guaranteed for 12 months, in Cheapside as everywhere else we work. If a joint we sealed fails because of how it was installed, we come back and put it right.

Place
Cheapside (SL5)
Wider area
Windsor and Maidenhead
Cover
12 months on every job
Price
A fixed quote before we start
Telephone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

When something else is needed

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

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

If you’re not sure, just ring 01277 525 020 or email the details over and we will give you a straight answer before you book.

What we seal

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

Leave it or put it right?

The longer openings stay, the more there tend to be: every new cable or pipe adds another. Keeping on top of it after each round of works keeps the job small. Converted and older buildings near places like Cheapside tend to move, and aged sealant cracks. A sealant with the right movement capability, correctly sized, lasts far better.

Quantities, awkward access and phased working all shape the price. So do site requirements such as inductions and permits.

What you get with us

  • Specification-led, product-correct work
  • Failed material removed, not covered up
  • Public liability insurance in place
  • Commercial sealant work since 2005

See how commercial sealant jobs are priced or our accreditations and insurance.

Penetration seals near Cheapside

There are a number of hotels within about 2 miles of Cheapside. In hotels, bedroom and corridor walls are normally fire-resisting, so services added in a refit need sealing with the specified product. Cheapside is about 24 miles from central London. Offices around the capital are refitted often, and the cabling that follows can breach fire-resisting walls, and the gaps need sealing with the specified product.

Offices at parks like Ascot Business Park (to the south-west of Cheapside) are re-cabled with each new tenant, and compartment walls need sealing afterwards to the tested detail. Hospital estates such as Heatherwood Hospital, 1.9 miles south-west of Cheapside, are divided into fire compartments, and any service penetration through them should be sealed to the specified, tested detail.

Cheapside is about 4 miles south of Windsor, in Windsor and Maidenhead. Commercial clients in Cheapside can call on us for service penetrations. 60 places across Windsor and Maidenhead fall within our area, including Cheapside. Sites around Reading have their own page, roughly 14 miles from Cheapside.

We take on service penetrations across the SL5 postcode area, for business premises of every kind. We cover commercial and managed buildings on Water Splash Lane, Dorian Drive and Cheapside Road and the roads nearby. We also cover Beggar's Bush (1 mile south-east), Ascot (1 mile south-west), Blacknest (1 mile south-east), Woodside (1 mile north-west) and Sunninghill (1 mile south) for service penetrations. Bigger towns within reach include Maidenhead (8 miles north-west), Windsor (4 miles north), Boyn Hill (7 miles north-west), Cookham (10 miles north), Furze Platt (9 miles north-west) and Dedworth (4 miles north).

Local landmarks in Cheapside

Locally, jobs take us to sites close to Papplewick School, Charters School and Thatched Tavern Public House, among other places. For rail, the closest station is Ascot station, roughly 1.6 miles south-west of the centre. A little further out are Heatherwood Hospital (1.8 miles west) and Berkshire Yeomanry Museum (3.9 miles north-east). Green spaces nearby include Virginia Water Lake and Gracious Pond.

Map of Cheapside © OpenStreetMap contributors

Diagnose, treat, sign off

We follow your site rules from the start: sign-in, induction and whatever permit system the building uses. Once we’re cleared to begin, we take the joints in the sequence agreed with you, and each area is checked before we leave it. Smaller jobs around Cheapside can be grouped with others nearby. A fixed quote is given before anything starts.

  1. We ask for the product and detail your designer has specified.
  2. Openings are measured and grouped by detail.
  3. Improvised fillers and failed sealant are removed.
  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.

Preparing the site

  • Point out any areas we must not close
  • Make sure the joints can be reached
  • Send asbestos survey details if the building is pre-2000

Getting a fixed quote

A good quote starts with a clear picture: what’s there, how much of it, how we reach it and what’s specified. Send what you have, and we will arrange a site visit if anything is unclear.

Ask for a quote

Advice

Do you need fire stopping in Cheapside?

Linear gaps fail where a fire-resisting wall meets a slab, soffit or another wall. Deflection and building movement can open these gaps. Linear joint details set a width range and movement capability, and the seal has to sit within them.

Site and facilities staff are often the first to spot these:

  • Expanding foam used as fire stopping
  • Unsealed joints where partitions meet the slab
  • Hidden openings found during inspections
  • Damaged fire seals in risers and voids

For a building such as Church of St Michael and All Angels, new heating or data runs are the usual reason penetrations need sealing.

Comparing quotes

  • Will RAMS and insurance details be available?
  • Proof of insurance
  • Health and safety accreditation such as CHAS
  • Can the work be phased to keep areas open?

Choosing a commercial sealant contractor

Questions we are asked in Cheapside

Is Cheapside off your patch?

Not at all. Cheapside is within our area. London and every South East county are within our area. Send photos and a list of what needs doing, and we will plan the job to need as few trips as possible.

Can you take on a job at a hospital such as Heatherwood Hospital?

Yes, hospitals are one of the sectors we cover. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.

What’s the quickest route to a quote?

It works in four steps: send details, receive a fixed quote, we carry out the work, and it’s guaranteed. The first step only needs photos and a postcode.

Do you offer coloured sealant?

That depends on the product specified. Some ranges offer many colours, others very few, so the available colours are confirmed with the quote.

Can one quote cover more than one building?

Yes. We take on portfolio and planned maintenance work, planned site by site to suit how each building is used.

How long before the joints can be used?

We will confirm how long the chosen product needs to cure, and flag anything to keep off until it has cured.

Will you just go over the old sealant?

No. Failed sealant is removed and the faces cleaned back to sound, dry material first, because fresh silicone will not bond with aged silicone.

What affects the price in Cheapside

These are the things that shape the price:

  • Site requirements such as inductions and permits
  • Travel to remote or island sites
  • Access and working height
  • Which sealant the job calls for

Access can matter as much as the joints themselves: joints within easy reach take less time than ones that need access equipment. Mention the access as part of your enquiry.

What we need to price the job

It doesn’t need to be a full survey. A few details are enough to get going:

  • What the building is and how it’s used
  • The product your specification calls for
  • Rough lengths or quantities, or drawings if you have them
  • Asbestos survey details if the building is older

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

Accreditations

Trusted. Accredited. Insured.