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

Fire-rated sealing and fire stopping in Heyshott, West Sussex

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

  • Fire sealant pulled out of the opening
  • Openings left by services added after handover
  • Expanding foam used as fire stopping
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
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
Covering the South East & Scotland
CHAS accredited
Fully insured: £5m PL

Fire stopping across Heyshott

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

How we handle fire stopping in Heyshott

Most of our fire stopping work happens after the building is up. Each new cable, pipe or data route cut through a fire-resisting wall leaves an opening behind, and they are easy to forget. We close the openings listed on your schedule, using the specified sealant and detail. We work on joints between fire-resisting walls and floors, pipe penetrations and small duct penetrations where the tested detail allows, and the usual reasons a site gets in touch are head-of-wall gaps with no fire seal and openings found when ceilings come down for a refit. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in Heyshott, preparation and product choice get the time they need.

A job near Heyshott is usually planned around one visit, with the specification and photographs sent in advance. We install to the specification and the manufacturer’s guidance, leaving design and sign-off with the designer and building control.

Every job is signed off with a 12-month guarantee. It’s a plain promise: if the work we did fails within twelve months, we return to fix it.

Mastic Doctor team members lined up next to their branded vans outside an office building
Where
Heyshott (GU29)
Region
West Sussex
Cover
12 months on our workmanship
Price
A fixed quote before we start
Telephone
01277 525 020
Updated
3 November 2026

From enquiry to sign-off

A typical day starts with protection: masking tape along the joint edges and sheeting over anything nearby. On site, the work normally takes a single visit for a short list of penetrations, or a phased programme for a whole building, and our waste is bagged and taken away as we go. For work around Heyshott, we aim to finish in one visit, so photographs and measurements up front really help. That way the right products come on the day.

  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. Improvised fillers and failed sealant are removed.
  4. Mineral wool or other backing is fitted where required.
  5. Fire-rated or intumescent sealant goes in around the services and is tooled off.
  6. We walk the completed areas with you and confirm the records agreed at quote stage.

Before we start on site

  • Confirm the product named in the specification
  • For older buildings, check the asbestos register before work
  • Warn occupants and staff about the work

Request a quote

Tell us about the building, the joints and when you need the work done, and we will put a fixed quote together. To get it moving, call the office on 01277 525 020 or email a schedule or drawings.

Ask for a quote

Advice

For managing agents and facilities managers

When you manage a building on behalf of an owner, you need clear quotes and clear reporting. You get a fixed quote, an agreed scope and a walk round at the end, plus a 12-month guarantee.

For main contractors, we work as the sealant subcontractor on new-build and refurbishment projects. We work to your programme, your specification and your site rules, with CSCS-carded applicators on site.

Different surfaces, different methods

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.

Small ducts

Small ductwork can sometimes be sealed with sealant where the tested detail includes it. Bigger ducts and fire-resisting ductwork are normally handled with other products.

What sealant work can’t fix

Our job is the joint, not everything around it. Sealant alone won’t deal with:

  • Construction that lacks the fire resistance the seal relies on
  • Fire risk assessments, a job for a competent assessor
  • Large openings beyond what any sealant detail covers

If you are not sure, just call 01277 525 020 or email a schedule or drawings and we will give you a straight answer before you book.

What we seal

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

Fire stopping around Heyshott: how the place shapes the job

Approved Document B is the English guidance that covers fire stopping around openings and penetrations. Its BS 476 references are being withdrawn from 2 September 2029, with BS EN 13501-2 classification taking over, subject to transitional arrangements. What we install is set by the specification, and it goes in to the tested detail. Heyshott lies roughly 46 miles out from central London. Business park offices in the commuter belt are refitted as tenants change, and each fit-out adds services through compartment walls.

Older community buildings such as The Parish Church of St James that have been rewired or given new heating can have service gaps through walls worth checking against the specification. Hospital estates such as Midhurst Community Hospital, 2.9 miles to the north of Heyshott, are divided into fire compartments, and any service penetration through them should be sealed to the specified, tested detail. Industrial units on estates such as Holmbush Industrial Estate, 2.2 miles north-west of Heyshott, often separate offices from warehouse space with fire-resisting walls, and new services through them need the specified seal.

Heyshott is about 8 miles north of Chichester, in West Sussex. If you are looking for fire stopping in Heyshott, we can help. 373 places across West Sussex fall within our area, Heyshott among them. There’s a separate page for Portsmouth, roughly 19 miles from Heyshott.

Work on service penetrations is covered throughout GU29. If your building is just outside Heyshott, we cover Hoyle (1 mile north-east), Heyshott Green (1 mile north-west), Cocking (1 mile west), Cocking Causeway (2 miles north-west) and West Lavington (2 miles north). Nearby towns on our patch include Bognor Regis (11 miles south), Chichester (8 miles south), Selsey (15 miles south), Littlehampton (13 miles south-east), Rustington (13 miles south-east) and Storrington (12 miles east).

Around Heyshott

We work on buildings around Unicorn Inn. Other landmarks nearby include Lodsworth Castle (2.8 miles north-east) and Midhurst Community Hospital (2.9 miles north). Green spaces nearby include Graffham Common and Levin Down.

Map of Heyshott © OpenStreetMap contributors

Looking after the joints

After handover, these steps help:

  • Have penetrations checked while they can still be seen
  • Keep product data and details in the fire safety file
  • Flag new cables with no seal around them
  • Keep general-purpose fillers away from compartment walls

New services after handover are a common way fire stopping gets breached. Building it into each contractor’s sign-off keeps the walls intact.

On fit-outs, get the fire-stopping specification agreed before the services go in. Details can then be picked to suit the actual pipes, cables and ducts, and the work runs in step with the M&E.

Your questions answered

Is Heyshott too small for you to travel to?

No. Small places get the same service as large ones. We work across Greater London and the South East. Where we can, we group nearby jobs to make the most of each trip.

Will you take on work at estates like Holmbush Industrial Estate, close to Heyshott?

Yes. Our area takes in Heyshott and its surroundings, with estates and business parks such as Holmbush Industrial Estate included. To start, just give us a call on 01277 525 020 or email drawings and photos with the unit, the joints involved and your access times.

Do you hold third-party fire-stopping installer certification?

No. We don’t hold a third-party fire-stopping installer certificate. Our credentials are CHAS accreditation, Constructionline membership and CSCS-carded applicators, and we are fully insured. Where a client or main contractor requires a scheme member, we’ll say so straight away rather than waste your time.

Do the same rules apply to fire stopping in Scotland?

Our work covers Greater London, the South East and every Scottish council area. Scotland’s non-domestic Technical Handbook, clause 2.1.14, expects service penetrations to be fire stopped to at least the wall or floor’s fire resistance, using products tested for their end use.

Can one quote cover more than one building?

Yes. We take on portfolio and planned maintenance work, with each site phased to suit its occupants.

Will you sign off the seals for us?

No. Sign-off isn’t ours to give, and we don’t hold a third-party installer certificate. Our part is fitting the specified product to its tested detail.

Can you quote from photographs?

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

Why it’s worth doing now in Heyshott

A seal that doesn’t match its tested detail gives false comfort. The fix is to remove it and reinstall to the detail, so it makes sense to get it right first time. One visit to deal with every failing joint makes more sense than several trips to a place like Heyshott, rather than one at a time. Photos of every joint help us quote for the whole job.

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

Why appoint us

  • Fully insured, including public liability cover
  • One number for every site we cover
  • Products installed to the manufacturer’s instructions
  • Sealing commercial buildings since 2005

Read what affects the cost and our accreditations.

Accreditations

Trusted. Accredited. Insured.