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

Fire Stopping in Catisfield

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

  • Seals disturbed by maintenance and left open
  • Fire-rated sealant that has cracked or shrunk back
  • Snag lists that include open service penetrations
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
The right sealant, to the right depth, neatly finished.
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Guaranteed
12-month guarantee on our workmanship.
Covering the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Fire stopping across Catisfield

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

Fire stopping for commercial buildings in Catisfield

Sealant is the specified answer for plenty of openings, such as metal pipes, cables and some small ducts where the detail covers them. Other openings need collars, wraps, batts, pillows or boards. If the detail calls for something other than sealant, we say so rather than force sealant into it. We work on small duct penetrations where the tested detail allows, cable penetrations and service gaps in risers, and the failures we’re asked to look at most are non-fire-rated filler around services and openings left by services added after handover. Whether you call it commercial sealant work, mastic application or joint sealing, in Catisfield it comes down to the same thing: failed joints cut out, faces prepared and the right sealant laid to the right depth.

Around Catisfield, penetration and linear seals tend to be one-building jobs. With the specification and photographs of the gaps, we can give a fixed quote and bring the right products.

We stand by our work with a 12-month guarantee. That covers our preparation and application, and if something we did falls short, we return to it.

The Mastic Doctor team beside their liveried vans in front of an office building
Location
Catisfield (PO15, PO14)
Region
Hampshire
Guarantee
12 months on every job
Quotes
Quoted before any work starts
Telephone
01277 525 020
Last updated
3 November 2026

Fire stopping around Catisfield: what changes locally

At about 66 miles from central London, Catisfield is within reach of the capital. Business park offices in the commuter belt are refitted as tenants change, and each fit-out adds services through compartment walls. A 2-mile radius around Catisfield takes in a number of hotels. Bedroom-to-corridor walls in hotels are normally fire-resisting, so new cabling or pipework through them has to be sealed to the tested detail.

For a hotel such as The Bugle Hotel (0.6 miles west of Catisfield), penetration seals are worth checking after any refit or services upgrade. On a hospital site such as Fareham Community Hospital, 2.6 miles to the north-west of Catisfield, fire-rated sealant goes in where the specification calls for it, with the work planned around the estates team’s permits.

Catisfield is about 1 mile west of Fareham, in Hampshire. If you are looking for fire stopping in Catisfield, we can help, as we do across Hampshire. 723 places across Hampshire fall within our area, including Catisfield. For work in that direction, see our Portsmouth page.

Commercial sites across PO15 and PO14 are covered for service penetrations. If your site is on Mill Lane, Bradly Road and Harcourt Road or close by, we can quote for service penetrations. We also cover Heathfield (1 mile east), Titchfield (1 mile west), Titchfield Park (1 mile north-west), Funtley (2 miles north-east) and Little Posbrook (2 miles south-west). Further afield, our area takes in Winchester (15 miles north), Gosport (4 miles south-east), Havant (10 miles east), Eastleigh (10 miles north-west), Horndean (10 miles north-east) and Totton (13 miles west).

Landmarks near Catisfield

Locally, jobs take us to sites close to Fishermans Arms and The Henry Cort Community College. For rail, the closest station is Fareham station, about 1.3 miles east of the centre. Other landmarks nearby include Fareham Shopping Centre (1.9 miles east) and Knowle Hospital (2.2 miles north). The countryside around Catisfield includes Holly Hill Woodland Park and Portsdown Hill.

Map of Catisfield © OpenStreetMap contributors

Questions about Catisfield

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

Yes, healthcare and care buildings are part of our work. The estates team’s permit system and infection-control rules come first, and the work is planned around them.

How does the move away from BS 476 affect penetration seals in Catisfield?

From 2 September 2029, Approved Document B drops its BS 476 references in favour of BS EN 13501-2 classification, with transitional arrangements. The designer or fire engineer sets the specification, and we install the product to the manufacturer’s tested detail.

What if there’s asbestos in the old mastic?

Asbestos is possible in some older mastics, particularly in buildings from before 2000. We check the asbestos register before cutting out old sealant in an older building, and if asbestos is suspected, work stops until it’s tested. Removing asbestos is a job for asbestos specialists, not us.

How long does a typical visit take?

It depends on the scope, but the work typically takes longer where risers, ceiling voids or occupied floors have to be worked through in sequence. Larger or phased jobs take longer, and we’ll give you a timescale with the quote.

Are you insured?

Yes. Mastic Doctor is fully insured, public liability included.

How long do sealant joints last?

There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Treat them as maintenance items and inspect them regularly.

Does weather matter for sealant work?

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. Internal work is far less affected.

What sealant work can’t fix

We seal joints; we don’t mend everything behind them. Sealant alone won’t deal with:

  • Designing or specifying fire stopping, which sits with the designer or fire engineer
  • Signing off or certifying a building’s fire stopping
  • Fire risk assessments, a job for a competent assessor

Not sure which it is? You can ring 01277 525 020 or use the quote form and we’ll tell you honestly before you book.

Joints and surfaces we work on

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

Building owners, agents and FMs in Catisfield

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.

We take on planned maintenance as well as one-off repairs: working through a building or an estate in stages that fit your budget. Sites in Catisfield can sit alongside others in a wider programme.

On site: what to expect

We bring the products specified for the job, along with primers and backing rod. Any old material is cut back to clean, sound faces, the manufacturer’s primer is applied where it’s called for, and the sealant is tooled off neatly. What matters most for a job in Catisfield is a clear list of what needs doing. You will then get a fixed price for the work.

  1. The specification and schedule come first, so we know which details apply.
  2. Access, permits and the order of areas are agreed with the site team.
  3. We compare every service penetration with its tested detail before sealing.
  4. Unsuitable material is removed and the opening cleaned so the seal starts clean.
  5. Backing and fire-rated sealant are installed to the detail and tooled.
  6. Anything outside the detail is reported to you rather than sealed.

What we need from you

  • Move anything stored against the joints
  • Arrange parking or a loading space
  • Confirm the product named in the specification

Request a quote

Every quote starts with the facts: the joints involved, quantities, access and the product called for. Share whatever details you have and we’ll fill any gaps with a visit.

Ask for a quote

Related advice

What happens if it’s left?

Sealing behind the M&E trades area by area beats a sweep at the end. Openings are visible, access is open and nothing has to be taken down. Over time, UV, weather and movement wear any sealant out. Replacing it before it fails keeps water out.

Every site prices differently: the joint sizes, the specified product, access and working hours each have a bearing. A fixed quote follows once we understand the job.

What you get with us

  • 12 months’ guarantee on every job
  • Work carried out by CSCS-carded applicators
  • Products installed to the manufacturer’s instructions
  • A fixed quote before work starts

Take a look at what affects the cost or how we’re accredited.

Common problems we fix in Catisfield

Some service penetrations were never sealed at all, often hidden above suspended ceilings or behind boxing. They come to light during inspections, refits or when another trade lifts a tile.

What tends to prompt an enquiry:

  • Fire-stopping items raised at inspection or handover
  • Fire seals cut back for extra cables and never reinstated
  • Fire stopping installed outside its tested range
  • Hidden openings found during inspections

Tenant changes at parks like Blackbrook Business Park, 0.9 miles east of Catisfield, bring new data and services, and openings through fire-resisting walls need the specified seal.

Comparing quotes

  • How joint depth will be controlled
  • Which product they’ll use, and why it suits the joint
  • Will RAMS and insurance details be available?
  • Proof of insurance

How to choose a sealant contractor

Looking after the joints

Problems stay small when the joints are checked regularly. Specifically:

  • Don’t let anyone top up a fire seal with the wrong product
  • File the specified details where the next contractor can find them
  • Ask the designer to confirm details early on refits
  • Get seals inspected before ceilings and boxing close

During planned inspections, look at seals in risers, cupboards and voids. Watch for cracked sealant, new services with no seal and openings that have grown.

Keep a register of where seals are and what they are made of. It tells the next contractor exactly what to reinstate.

Accreditations

Trusted. Accredited. Insured.