Fire stopping in Fernhurst
Fire-rated and intumescent sealing of service penetrations and linear gaps across Fernhurst, carried out by CSCS-carded applicators. CHAS accredited and fully insured.
- Fire sealant pulled out of the opening
- Open linear gaps along the top of fire-resisting walls
- Unsealed openings around new pipes and cables
Fire stopping in Fernhurst
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Fire stopping in Fernhurst, done properly
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 job is fitting fire-rated and intumescent sealant at those service penetrations, and along linear gaps, where it is the specified product. We work to the product’s tested detail for every seal. We work on joints between fire-resisting walls and floors, service gaps in risers and pipe penetrations, and the usual reasons a site gets in touch are unsealed penetrations discovered above suspended ceilings and fire-rated sealant that has cracked or shrunk back. Facilities teams, main contractors and managing agents in Fernhurst tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.
Rural conversions around Fernhurst can put new fire-resisting partitions inside older structures. Where a pipe or cable passes through a fire-resisting wall, the seal must match the tested detail: product, substrate, gap and depth.
A 12-month guarantee applies to all our work in West Sussex. Should something we installed fail, phone 01277 525 020 or email us and we’ll come back to it.
- Place
- Fernhurst (GU27)
- Region
- West Sussex
- Cover
- 12 months on every job
- Price
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Page updated
- 3 November 2026
From enquiry to sign-off
Before any cutting starts, the area is protected: tape along each joint edge and covers over finishes, stock and equipment close by. The work itself typically takes longer where risers, ceiling voids or occupied floors have to be worked through in sequence, and our waste is bagged and taken away as we go. If others near Fernhurst need work, visits can be combined. A fixed quote is given before anything starts.
- We ask for the product and detail your designer has specified.
- Openings are measured and grouped by detail.
- Improvised fillers and failed sealant are removed.
- Mineral wool or other backing is fitted where required.
- We gun the sealant in to the specified depth around each service and tool it.
- Completed areas are checked with you, with the records agreed when we quoted.
What we need from you
- Move anything stored against the joints
- Agree which areas must stay open
- Share the asbestos register for older buildings
Getting a fixed quote
Need a figure for a tender or a budget? We will quote against your scope and drawings you can plan around. For a chat about it beforehand, speak to us on 01277 525 020 or email us.
Related advice
Compartment walls and floors in Fernhurst
Fernhurst lies roughly 41 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. Fire stopping of openings and penetrations in England falls under Approved Document B. Its BS 476 references are being withdrawn from 2 September 2029, with BS EN 13501-2 classification taking over, subject to transitional arrangements. Either way, we install the specified product to its tested detail.
For a unit at a site such as Hurstfold Industrial Estate, which lies south-east of Fernhurst, new power or data runs between office and warehouse can breach a compartment wall. Hospital estates such as Holy Cross Hospital (2.8 miles north of Fernhurst) are divided into fire compartments, and any service penetration through them should be sealed to the specified, tested detail.
Fernhurst is about 10 miles east of Petersfield, in West Sussex. Any commercial site in Fernhurst is covered. Our West Sussex coverage takes in 373 places, large and small. We also cover Portsmouth, some 23 miles away.
Commercial sites across GU27 are covered for service penetrations. Streets here include Church Road, Merle Way and Bishops Close. We also cover Kingsley Green (1 mile north), Woolmer Hill (2 miles north-west), Linchmere (2 miles north-west), Redford (3 miles south-west) and Haslemere (3 miles north). Nearby towns on our patch include Chichester (15 miles south), Storrington (15 miles south-east), Billingshurst (12 miles east), Portfield (15 miles south), Midhurst (5 miles south) and Arundel (15 miles south-east).
What’s near Fernhurst
The closest station to Fernhurst is Haslemere station, roughly 2.7 miles north. Other landmarks nearby include Haslemere and District Hospital (2.9 miles north). Not far away are Blackdown and Cooksbridge Meadow.
Places near Fernhurst
More services for Fernhurst
Maintenance after handover
Every sealant joint needs some looking after, and how long they last depends on how they’re treated. Our advice:
- Look above ceilings when tiles are lifted for other jobs
- Agree the fire-stopping specification before services go in
- Put resealing into every M&E and fit-out package
- Don’t let anyone top up a fire seal with the wrong product
Once the seals are in, tell other trades they exist and must not be disturbed. Any seal cut back for a new service needs reinstating to its tested detail using the same product.
Make reporting new openings part of every permit to work in service areas. It costs little and catches breaches early.
Leave it or put it right?
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. Converted and older buildings near places like Fernhurst tend to move, and aged sealant cracks. The right product, sized to the joint, copes much better.
We don’t publish prices, since every building and every scope is different. Call for a quote and we’ll price your job on its own details.
Why choose Mastic Doctor in Fernhurst
- Public liability insurance in place
- Workmanship guaranteed for 12 months
- Sealing commercial buildings since 2005
- CHAS accredited contractor
See how commercial sealant jobs are priced and our accreditations.
How the job changes by surface
Masonry and concrete
Openings through concrete vary from tidy cores to rough break-outs. The gap is measured at the widest point so we know it sits within the tested range, and any outside it are raised with you.
Small ducts
We seal around ducts only within what the tested detail covers. The ductwork, its supports and any dampers are for the ductwork contractor.
When to bring in a specialist
Some joints are best left to specialists: for instance fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. Getting these wrong usually costs more in the end than doing them right.
There’s also the paperwork. Many sites expect CSCS cards, RAMS and proof of insurance, and we’ll confirm the paperwork you need with the quote.
Fernhurst: questions and answers
Do you cover business parks and estates near Fernhurst, such as Hurstfold Industrial Estate?
Yes, sites like Hurstfold Industrial Estate are within our area, along with the rest of Fernhurst. Send details of the unit and the work through our quote form for a quick quote.
Is Fernhurst too small for you to travel to?
Not at all: smaller places are covered as well as towns. Our area covers London and the South East counties. Send photographs and a list of what needs doing, and we will plan the job to need as few trips as possible.
Can weather delay the job?
It can, for external work. Sealant won’t bond properly to a wet or frosty joint, so external work may be moved if conditions aren’t right. Indoors, the weather is rarely a problem.
Can you send site paperwork?
Requirements differ from site to site, so list what you need, whether RAMS, insurance or CSCS details, and we will confirm with the quote.
Are you members of a third-party fire-stopping installer scheme?
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.
Is your workmanship covered by a guarantee?
Yes. Workmanship is guaranteed for 12 months.
Can you tell us what fire stopping our building needs?
No. Deciding what is needed sits with the designer, fire engineer and building control. Our role is fitting the specified fire-rated sealant, following the maker’s tested details.
Do you need fire stopping in Fernhurst?
Damage plays a part too. Maintenance work can knock a seal, cut it back for an extra cable or remove it with an old pipe and the opening isn’t always resealed.
Things that typically lead to an enquiry:
- Unsealed penetrations discovered above suspended ceilings
- Seals disturbed by maintenance and left open
- Fire-stopping items raised at inspection or handover
- Unsealed openings around new pipes and cables
Older community buildings such as The Parish Church of St Margaret that have been rewired or given new heating can have service gaps through walls worth checking against the specification.
Before you book anyone
- How the joint faces will be prepared and primed
- Which product they’ll use, and why it suits the joint
- Their approach to joint depth and backing
- Whether their applicators hold CSCS cards