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

Fire-rated sealing and fire stopping in Paulsgrove, Portsmouth

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

  • Seals that don’t match their tested detail
  • Unsealed penetrations discovered above suspended ceilings
  • Damaged fire seals in risers and voids
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
12-month guarantee on our workmanship.
Covering the South East & Scotland
CHAS & Constructionline
£5m PL insurance

Fire stopping for Paulsgrove sites

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

How we handle fire stopping in Paulsgrove

We are commercial sealant applicators, CHAS accredited and a Constructionline member, with CSCS-carded applicators on site. We hold no third-party fire-stopping installer certificate and we’d rather say that up front. What we offer is careful installation of the specified sealant to its tested detail, with a 12-month guarantee on our workmanship. If you have snag lists that include open service penetrations and hidden openings found during inspections, we can help, whatever the surface. Looking for mastic applicators who cover Paulsgrove? We’ve been sealing commercial buildings since 2005, with CSCS-carded applicators.

Fire-rated sealing in a place like Paulsgrove is usually a single building at a time. With the specification and photos of the gaps, we can give a fixed quote and bring the right products.

Every job we finish is backed by a 12-month workmanship guarantee, wherever the site is. If a joint we sealed fails because of how it was installed, we come back and put it right.

Location
Paulsgrove (PO6)
Region
Portsmouth
Cover
12 months on every job
Quote
Quoted before any work starts
Phone
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

Diagnose, treat, sign off

Diagnose, treat, sign off: every visit follows that pattern. First comes an inspection and agreement on scope, then the work is carried out to the specified product and detail, and we finish with a walk round so the work can be signed off. Several jobs near Paulsgrove can be grouped on one trip. Mention the building’s opening times and we’ll work within them.

  1. We read the specification, drawings or penetration schedule you send and ask about anything unclear.
  2. Every penetration is compared with its detail: wall or floor type, service, gap size and depth.
  3. Anything that doesn’t belong in the opening, such as expanding foam or general-purpose filler, is removed.
  4. Mineral wool or other backing goes in wherever the detail asks.
  5. We apply the specified sealant to the depth and around the services as the detail shows.
  6. Openings that need a collar, wrap, batt or other product are flagged to you rather than filled with sealant.

Preparing the site

  • Send asbestos survey details if the building is pre-2000
  • Let building users know which areas are affected
  • Confirm the product named in the specification

Quotes

To get a fixed quote, call 01277 525 020 or email the details over with the site address and an outline of the work. Our quote form is another easy route.

Get a price

Related advice

When to bring in a specialist

Redoing a failed joint usually costs more than getting it right at the outset, because the whole bead must be removed and the faces cleaned back again. That’s why many clients bring in a specialist from the beginning.

There’s also the paperwork. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and our CSCS-carded applicators are used to working under those rules.

Leave it or put it right?

Leave a penetration open and smoke and fire can cross into the next compartment far earlier than intended. Putting it right is usually a modest job when the openings are accessible. Left until ceilings are closed or a tenant moves in, the same work costs more access and more disruption. Small buildings around Paulsgrove suffer from failed joints as much as large ones. Catching it early means a reseal rather than repairs.

Quantities, awkward access and phased working all shape the price. Site requirements like inductions and permits play a part as well, along with the time of year for external work.

Why us?

  • Sealing commercial buildings since 2005
  • A fixed quote before work starts
  • Work to your specification and the manufacturer’s guidance
  • CSCS-carded applicators

See what affects the cost or our accreditations and insurance.

Service penetrations in Paulsgrove buildings

For England, the fire stopping of penetrations is dealt with in Approved Document B. References to the older BS 476 classes are being removed from it from 2 September 2029, after which the European classification, BS EN 13501-2, is the route, subject to transitional arrangements. Our part stays the same: the specified product, installed to its tested detail. A 2-mile radius around Paulsgrove takes in several 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.

Shop fits in centres such as Victory Retail Park (to the south of Paulsgrove) can bring new services through fire-resisting walls between units, which then need the specified seal. For a hotel such as Portsmouth Marriott Hotel (under half a mile south-east of Paulsgrove), penetration seals are worth checking after any refit or services upgrade. Theatres, wards and plant rooms at sites like Queen Alexandra Hospital, 1 mile to the east of Paulsgrove, all have compartment walls crossed by services.

Paulsgrove is about 3 miles north of Portsmouth, in Portsmouth. Commercial clients in Paulsgrove can call on us for service penetrations. Our Portsmouth coverage takes in 19 places, large and small.

We take on service penetrations across the PO6 postcode area. We cover commercial and managed buildings on Bourne Road, Ludlow Road and Farmlea Road and the roads nearby. Being close to the M27 and A27, Paulsgrove is straightforward for us to reach. If your building is just outside Paulsgrove, we cover Wymering (1 mile east), Cosham (1 mile east), Hilsea (2 miles south-east), Widley (2 miles east) and Purbrook Heath (2 miles north-east). Further afield, our area takes in Portsmouth (3 miles south), Southsea (5 miles south), Milton (4 miles south), Landport (3 miles south), Baffins (3 miles south-east) and Portsea (4 miles south).

Local landmarks in Paulsgrove

In Paulsgrove, that means premises near Alexandra Park, The Sir Alec Rose pub and Castle View Academy. The nearest railway station is Cosham station, roughly 1.2 miles south-east. Nearby you’ll also find Queen Alexandra Hospital (1.1 miles east) and World War I Remembrance Centre (2.2 miles south-east). The countryside around Paulsgrove includes Southmoor Nature Reserve and Portsdown Hill.

Map of Paulsgrove © OpenStreetMap contributors

How the job changes by surface

Linear joints

Joints at the top of partitions may need to move as the slab above deflects. We use the product and backing the detail names for that movement, with no gaps along the run.

Drylining partitions

Drylined fire walls are tested in a particular build-up. The sealant detail has to be tested in that wall type, with the stated board layers.

Questions we’re asked in Paulsgrove

Would you work within a site like Queen Alexandra Hospital?

Yes. We work in healthcare settings as well as offices and schools. Work is phased so departments keep running, under the site’s own rules.

Could you schedule work at a campus like University of Portsmouth - North Zone for the vacation?

Yes, holiday working periods are the norm on campus jobs. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.

What about RAMS and site documents?

Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote.

Is the BS 476 change in 2029 relevant to fire stopping?

From 2 September 2029, Approved Document B in England drops its references to BS 476 classes, subject to the Government’s transitional arrangements. The European route, BS EN 13501-2, then applies. Your designer will choose products with the right evidence.

Can you seal any opening with fire-rated sealant?

No. It depends on the tested detail for that wall or floor and service. Collars, wraps, batts and boards exist for openings sealant doesn’t cover, and we flag those rather than improvise.

Do you work in Scotland as well as England?

Scotland sets its own building regulations, with Technical Handbooks. Either way, we install the specified sealant to its tested detail.

Do you take on small jobs?

We quote for single jobs as well as large packages and programmes. Send details for a fixed quote.

For managing agents and facilities managers

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

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

When something else is needed

A few problems need another trade or a different fix, and we say so rather than covering them up:

  • Plastic pipes whose detail calls for a collar or wrap
  • Signing off or certifying a building’s fire stopping
  • Reviewing a building’s overall fire safety

Not sure which it is? You can give us a call on 01277 525 020 or email the details over and we will tell you honestly before you book.

Where we work in Paulsgrove

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

Trusted. Accredited. Insured.