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

South Ascot fire stopping

We carry out fire-rated and intumescent sealing of service penetrations and linear gaps in South Ascot and the surrounding area. Send photographs or drawings for a fixed quote.

  • Builders’ foam or ordinary silicone in compartment walls
  • Penetration schedules that need working through
  • Fire stopping installed outside its tested range
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
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
Covering the South East & Scotland
CHAS & Constructionline
£5m public liability

Need fire stopping in South Ascot?

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

After the work

Every sealant joint needs some looking after, and how long they last depends on how they’re treated. We suggest:

  • Have penetrations checked while they can still be seen
  • Leave fire sealant to cure fully before covering it
  • Foam or ordinary sealant is never a fire-seal repair
  • Report damaged or disturbed seals as soon as they’re spotted

Never top up a fire seal with foam, ordinary silicone or filler. A repair should use the original product, installed the same way.

Write fire stopping into the scope of any work crossing a compartment wall or floor. That way the opening is sealed while the trade and access are still there, not months later.

Fire stopping for commercial buildings in South Ascot

Penetration seals are fire tested to BS EN 1366-3 and linear joint seals to BS EN 1366-4 and the results are classified to BS EN 13501-2. A rating such as EI 60 only holds when the product is installed as it was tested. So our job is to reproduce that arrangement faithfully. We work on pipe penetrations, small duct penetrations where the tested detail allows and cable penetrations, and the failures we’re asked to look at most are seals that don’t match their tested detail and builders’ foam or ordinary silicone in compartment walls. A single leaking joint is often how a building in South Ascot 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.

Buildings in a smaller place such as South Ascot that need fire-rated sealing are typically schools, care homes, surgeries, small offices and flats over shops. Specified fire-rated sealant goes around new services there, built to match the manufacturer’s detail.

We stand by our work with a 12-month guarantee. That covers our preparation and application, and we come back if anything isn’t right.

Mastic Doctor team members lined up next to their branded vans outside an office building
Location
South Ascot (SL5)
Region
Windsor and Maidenhead
Guarantee
12 months on our workmanship
Price
Fixed quote, scope in writing
Phone
01277 525 020
Page updated
3 November 2026

Why it’s worth doing now in South Ascot

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. A failed joint lets water into a building whatever its size. Early resealing avoids the damage that follows a leak.

What a job costs comes down to the quantity of joints, how much old material needs removing and the access. Call for a quote once you have the details.

Why clients in South Ascot choose us

  • CHAS accredited contractor
  • Fixed quotes based on photos, drawings or a visit
  • Fully insured, including public liability cover
  • Old sealant cut out, never sealed over

Read what affects the cost or how we’re accredited.

Questions we’re asked in South Ascot

Do you work on fire-rated sealing in hotels in South Ascot?

Yes, where the specification calls for fire-rated sealant. 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 South Ascot too far out for you?

Not at all: smaller places are covered as well as towns. Our area covers London and the South East counties. We plan jobs in smaller places so return trips are kept to a minimum.

What will the job cost?

That depends on the job: the volume of work, the access, the specified product and how it’s phased. Call for a quote.

Are your applicators CSCS-carded?

Yes. We use CSCS-carded applicators, as many construction sites ask for.

Do you have public liability insurance?

Yes. Our insurance certificate can be sent alongside the quote.

How do we ask for a quote?

You can use the quote form on this site; alternatively, speak to us on 01277 525 020 or email a schedule or drawings. Photos, drawings or a joint schedule help us quote quickly.

Will you come and look before quoting?

Photos, drawings or a schedule are often enough to quote. Where they aren’t, we arrange a site visit.

What the job involves on each surface

Cables and cable bundles

Single cables and small bundles are often within a fire-rated sealant’s tested detail. The detail limits bundle size and the gaps between and around cables and we work within those limits.

Metal pipes

Metal pipes conduct heat, so their details often call for extra measures along the pipe, and the tested detail may ask for insulation beyond the wall. We follow whatever the detail requires and flag anything we can’t match.

Fire stopping around South Ascot: how the place shapes the job

South Ascot lies roughly 26 miles out from central London. Office refits around the commuter belt bring new cabling through fire-resisting walls. Two care or nursing homes sit less than 2 miles from South Ascot. In a care home, any new pipe or cable through a fire-resisting wall should be sealed to the specified detail. Where that’s fire-rated sealant, we install it to the manufacturer’s tested detail.

In a building such as Church of All Souls, any service penetration through a fire-resisting wall should be sealed to the specified detail. In a hotel such as Macdonald Berystede Hotel & Spa (0.5 miles south-east of South Ascot), new pipework or cabling through bedroom and corridor walls needs sealing with the specified product. For an estates team at a campus like Imperial College Silwood Park Campus, 1.3 miles north-east of South Ascot, summer M&E works are normally followed by a round of penetration sealing.

South Ascot is about 4 miles east of Bracknell, in Windsor and Maidenhead. We cover commercial sites throughout South Ascot. South Ascot is one of 60 places in Windsor and Maidenhead on our list. Our Reading page has more on work in that area.

If you need fire stopping in SL5, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. Streets here include Church Road, The Poplars and Brockenhurst Road, and sites on any of them can send details for a fixed quote. South Ascot sits on or close to the B3020. We also cover Sunningdale (1 mile east), Broomhall (2 miles east), Windlesham (2 miles south), Brick Hill (3 miles south-east) and Bagshot (3 miles south). Nearby towns on our patch include Maidenhead (9 miles north), Windsor (6 miles north), Boyn Hill (8 miles north), Cookham (11 miles north), Furze Platt (10 miles north) and Dedworth (5 miles north). As one of the bigger centres in Windsor and Maidenhead, South Ascot has a broad mix of commercial, public and industrial buildings, and we cover them all.

What’s near South Ascot

In South Ascot, that means premises near Silwood Park, Charters School and St Mary's School, among other places. For rail, the closest station is Ascot station, roughly 0.5 miles north-west of the centre. Well-known places in the area include Heatherwood Hospital (1 mile north-west) and The Lexicon (3.6 miles west). For a walk, there’s Virginia Water Lake and Gracious Pond.

Map of South Ascot © OpenStreetMap contributors

Our process

When we get to site, we report to your site contact and complete whatever induction the building runs. Floors, finishes and fittings next to the joints are covered before anything is cut or cleaned, and the work usually takes anything from one day to a planned run of visits, depending on the number of seals and the access. For a job in South Ascot, the main thing is a clear picture of the work. A fixed quote follows.

  1. First we confirm the product and tested details named in the specification.
  2. Openings are measured and grouped by detail.
  3. Old or wrong materials are cut out.
  4. Where the detail needs backing, it goes in at the stated depth.
  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

  • Confirm the product named in the specification
  • Make sure the joints can be reached
  • Arrange parking or a loading space

Get a fixed quote

Every quote starts with the facts: 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.

Get a quick quote

Read more

When to bring in a specialist

Putting right a botched joint often costs more than sealing it well at the start, because the whole bead must be removed and the faces cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.

Some joints are best left to specialists: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. A poor seal in places like these tends to cost more to put right later.

What sets the cost

There’s no standard rate for sealant work, because every site is different. What we take into account:

  • How much existing material needs removing
  • Any access equipment needed
  • How much there is to seal
  • The site’s rules and procedures

Every site prices differently: joint size, product, access and site hours all play a part. A fixed quote follows once we understand the job.

What to include in your enquiry

Diagnosis starts before we arrive. Tell us:

  • Whether the building will be occupied during the work
  • Access details, including height
  • A wide shot and a close-up of the area
  • Asbestos survey details if the building is older

Need a figure for a tender or a budget? Send the scope and any drawings, and we’ll return a fixed quote that you can work with. If you have questions first, phone 01277 525 020 or email drawings and photos.

Accreditations

Trusted. Accredited. Insured.