The Mastic Doctor team standing beside their branded vans outside an office building
West Sussex · England

Hoyle fire stopping

Fire-rated and intumescent sealing of service penetrations and linear gaps in Hoyle. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.

  • Openings left by services added after handover
  • Snag lists that include open service penetrations
  • Builders’ foam or ordinary silicone in compartment walls
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
Constructionline member
Fully insured: £5m PL

Fire stopping near Hoyle

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

Fire stopping in Hoyle

For main contractors, our fire stopping package slots in after the M&E trades have finished in an area. We work from your penetration schedule or marked-up drawings alongside the manufacturer’s details. Tell us what records you need and we will confirm with the quote. If you have fire stopping installed outside its tested range and damaged fire seals in risers and voids, we can put it right. A single leaking joint is often how a building in Hoyle 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.

For a smaller site near Hoyle, we plan to do all the penetrations in one go, with the specification and photos sent in advance. We install to the specification and the manufacturer’s guidance, leaving design and sign-off with the designer and building control.

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

The Mastic Doctor team beside their liveried vans in front of an office building
Where
Hoyle (GU29)
Region
West Sussex
Cover
A 12-month guarantee
Quote
Quoted before any work starts
Phone
01277 525 020
Page updated
3 November 2026

Diagnose, treat, sign off

We bring the products specified for the job, along with primers and backing rod. Any old material is cut back to clean, sound faces, primer goes on where the manufacturer specifies it, and each bead is tooled to a neat concave finish. For work around Hoyle, we aim to finish in one visit, so we ask for photos and rough sizes first. That way the right products come on the day.

  1. We read the specification, drawings or penetration schedule you send and raise any questions before we price.
  2. Every penetration is compared with its detail: wall or floor type, service, gap size and depth.
  3. Unsuitable fillers and loose debris are taken out of each opening.
  4. We fit the backing the detail asks for, to the stated depth.
  5. We apply the specified sealant to the depth and around the services as the detail shows.
  6. If an opening needs something other than sealant, we tell you instead of improvising.

What we need from you

  • Point out parking and an unloading spot
  • Flag any permit to work we’ll need
  • Agree which areas must stay open

Get a fixed quote

The quickest route to a quote is a few photos and the site postcode. Upload them with the quote form, or call the office on 01277 525 020 or email drawings and photos if you’d rather talk the job through.

Get a quick quote

Advice

Questions we’re asked in Hoyle

Would you work within a site like Midhurst Community Hospital?

Yes. We work in healthcare settings as well as offices and schools. We follow the site’s permits, sign-in and infection-control procedures in every area.

Do you cover business parks and estates near Hoyle, such as Holmbush Industrial Estate?

Yes, sites like Holmbush Industrial Estate are within our area, along with the rest of Hoyle. Send details of the unit and the work through our quote form for a quick quote.

Do you guarantee your work?

Yes. It runs for twelve months and covers how we prepared and sealed the joints, but not damage, misuse or other trades’ work.

When can the area be used after sealing?

We’ll confirm how long the chosen product needs to cure, and sign any area that should be left alone.

Do you work in Scotland as well as England?

Building standards in Scotland are separate from England’s, and England uses Approved Document B. Wherever the site is, our work follows the specification and the tested detail.

Do you seal openings left by new services?

Yes, where there is a specification for those walls and floors. New services after M&E works often breach existing seals and we close them with the specified product.

Will you sign off the seals for us?

No. We don’t certify or sign off fire stopping, and we hold no third-party fire-stopping installer certificate. We work to the specification and the manufacturer’s installation guidance, and any records you need can be confirmed with the quote.

Keeping the joints sound

A few simple habits keep the new joints working:

  • Leave fire sealant to cure fully before covering it
  • Report damaged or disturbed seals as soon as they’re spotted
  • Have penetrations checked while they can still be seen
  • Agree the fire-stopping specification before services go in

Don’t patch a fire-rated seal with anything outside its tested detail. A repair should use the original product, installed the same way.

Looking at service areas on a regular cycle pays off. A cracked or disturbed seal found early is a small job.

What the job involves on each surface

Small ducts

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

Cables and cable bundles

Cable penetrations are frequently sealed with fire-rated sealant where the detail allows. The detail limits bundle size and the gaps between and around cables.

What we can’t put right

Part of a good diagnosis is knowing where sealant stops. You’ll hear from us if the cause turns out to be one of these:

  • Construction that lacks the fire resistance the seal relies on
  • Approving the work on behalf of building control
  • Deciding what a wall or floor needs, which belongs to the designer

Not sure which it is? You can speak to us on 01277 525 020 or email us and we’ll tell you honestly before you book.

Where we work in Hoyle

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

Service penetrations in Hoyle buildings

Hoyle is about 46 miles from central London. Office refits around the commuter belt bring new cabling through fire-resisting walls. For England, the fire stopping of penetrations is dealt with in Approved Document B. The national BS 476 classes are due to drop out of it from 2 September 2029, leaving the European BS EN 13501-2 route, subject to transitional arrangements. What we install is set by the specification, and it goes in to the tested detail.

In a building such as The Parish Church of St James, any service penetration through a fire-resisting wall should be sealed to the specified detail. For a hospital such as Midhurst Community Hospital, 2.6 miles north-west of Hoyle, penetration sealing is usually phased ward by ward, with infection-control rules agreed first.

Hoyle is about 9 miles north of Chichester, in West Sussex. If you are looking for fire stopping in Hoyle, we can help. Hoyle is one of 373 places we cover in West Sussex. For work in that direction, see our Portsmouth page.

Postcode districts covered here: GU29 for service penetrations. If your building is just outside Hoyle, we cover Heyshott (1 mile south-west), Heyshott Green (1 mile west), Cocking Causeway (2 miles north-west), West Lavington (2 miles north-west) and Cocking (2 miles west). Further afield, our area takes in Bognor Regis (12 miles south), Chichester (9 miles south), Littlehampton (13 miles south-east), Rustington (13 miles south-east), Storrington (12 miles east) and Billingshurst (12 miles east).

What’s near Hoyle

In Hoyle, that means premises near Unicorn Inn and the streets around them. Other landmarks nearby include Midhurst Community Hospital (2.6 miles north-west) and Lodsworth Castle (2.3 miles north-east). Not far away are Levin Down and Graffham Common.

Map of Hoyle © OpenStreetMap contributors

Common problems we fix in Hoyle

Most open service penetrations are left by later work. A new cable pulled by an electrician, a pipe rerouted by a plumber or a data run drilled through a riser can leave the hole behind. Across several fit-outs, the openings add up.

If one of these sounds familiar, it’s time for a closer look:

  • Penetration schedules that need working through
  • Old intumescent sealant that has split away
  • Unsealed joints where partitions meet the slab
  • Builders’ foam or ordinary silicone in compartment walls

Schools such as Midhurst Rother College often have new data and services installed during holidays, and penetrations through fire-resisting walls should be checked afterwards.

What to look for in a quote

  • What the guarantee covers, and for how long
  • Is the sealant right for the movement and the substrate?
  • Are they CHAS accredited or on Constructionline?
  • Will CSCS-carded applicators be on site?

Our contractor checklist

Commercial clients in Hoyle

Hospitality, education, healthcare, office and retail clients book us directly too. The work is planned around how the building runs, so guests, pupils, patients or staff are disturbed as little as possible.

As a CHAS accredited contractor and Constructionline member, we make supplier vetting simple. We’re fully insured, and our insurance certificate can go with the quote.

Accreditations

Trusted. Accredited. Insured.