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

Fire-rated sealing and fire stopping in Broadgate, Hampshire

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

  • Openings left by services added after handover
  • Seals disturbed by maintenance and left open
  • Improvised or mixed-product fire seals
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
South East, London & Scotland
Constructionline member
£5m public liability

Fire stopping for businesses in Broadgate

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

Compartments and services around Broadgate

Approved Document B is the English guidance that covers fire stopping around openings and penetrations. 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. Either way, we install the specified product to its tested detail. Several hotels sit less than 2 miles from Broadgate. 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.

In a building such as Church of St Mark, any service penetration through a fire-resisting wall should be sealed to the specified detail. Shop fits in centres such as Chestnut Avenue Retail Park (2.8 miles south of Broadgate) can bring new services through fire-resisting walls between units, which then need the specified seal.

Broadgate is about 2 miles north-west of Chandler's Ford, in Hampshire. Looking for fire stopping in Broadgate? We can help. 723 places across Hampshire fall within our area, Broadgate among them. Southampton is covered too, some 6 miles away.

Work on service penetrations is covered throughout SO51, for business premises of every kind. If your site is on Hook Road, Broadgate Farm and Woodlea Way or close by, we can quote for service penetrations. Just outside Broadgate, we also work in Knapp (1 mile north-west), Ampfield (1 mile west), Gosport (1 mile west), Crampmoor (2 miles west) and Lower Slackstead (2 miles north-west). Nearby towns on our patch include Winchester (6 miles north-east), Eastleigh (4 miles south-east), Fareham (14 miles south-east), Andover (15 miles north), Totton (7 miles south-west) and Hedge End (8 miles south-east).

What’s near Broadgate

Locally, jobs take us to sites close to White Horse Public House and Thornden School and the streets around them. For rail, the closest station is Chandlers Ford station, roughly 1.8 miles south-east of the centre. Nearby you’ll also find Romsey Community Hospital (3.2 miles west) and Eastleigh Museum (3.5 miles south-east). Not far away are Flexford Nature Reserve.

Map of Broadgate © OpenStreetMap contributors

Fire stopping in Broadgate, done properly

A fire-rated sealant is only one part of a tested system: its test evidence covers one product in one kind of wall or floor, with set services, gaps, depths and backing. We match each opening to that detail before any sealant goes in, and we say so if it doesn’t fit. We work on service gaps in risers, cable penetrations and small duct penetrations where the tested detail allows, and the failures we’re asked to look at most are builders’ foam or ordinary silicone in compartment walls and snag lists that include open service penetrations. One point of contact handles commercial sealant work in Broadgate from the first photographs to the final walk-round, for single jobs and planned programmes alike.

Barn and farm-building conversions near places like Broadgate often combine new partitions with old walls. Where a pipe or cable passes through a fire-resisting wall, the seal must match the tested detail: product, substrate, gap and depth.

Our workmanship is guaranteed for 12 months. If a joint we sealed fails because of how it was installed, we come back and put it right.

Mastic Doctor team members lined up next to their branded vans outside an office building
Location
Broadgate (SO51)
Wider area
Hampshire
Cover
12 months on our workmanship
Quotes
Quoted before any work starts
Phone
01277 525 020
Updated
3 November 2026

Your questions answered

Do you take on work at healthcare sites like Wessex Hospital?

Yes. Healthcare sites are among the places we work. We follow the site’s permits, sign-in and infection-control procedures in every area.

Can you work at a site such as Sleepy Hollow Business Park, by Broadgate?

Yes. Estates, retail parks and business parks around Broadgate, Sleepy Hollow Business Park among them, are all within reach. A few photographs and the unit address let us price the work.

Can you quote from photos?

That depends on the size and complexity of the job. Simple work can often be priced from photographs, while larger or less clear jobs get a site visit first.

Is sealant suitable for all service openings?

No. Sealant is the right product only where the tested detail says so. Collars, wraps, batts and boards exist for openings sealant doesn’t cover, and we’ll tell you when that applies.

Can you send site paperwork?

Requirements differ from site to site, so list what you need, whether RAMS, insurance or CSCS details, and we’ll confirm with the quote.

Is BS 476 being phased out?

For buildings in England, Approved Document B removes BS 476 references from 2 September 2029. Products are then judged on BS EN 13501-2 classifications, though transitional rules apply. Scotland follows its own Technical Handbook, including clause 2.1.14 on service penetrations.

How many days will you need on site?

The duration is planned around your programme and the access we are given. You’ll have an expected duration with the quote.

What affects the price in Broadgate

These are the things that shape the price:

  • Induction, permit and paperwork requirements
  • The total length or number of joints
  • Whether the work must be split into stages
  • How accessible the joints are

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.

What we need to price the job

For an accurate fixed quote, we need to understand the site. Useful things to include:

  • Any specification or named product
  • The postcode of the building
  • Approximate linear metres or a joint schedule
  • How the joints are reached, and at what height

Specifications, drawings and tender packages are welcome with any enquiry, and we will price the work to it. Smaller jobs need nothing more than photos and a few notes.

Why it’s worth doing now in Broadgate

An open or wrongly sealed service penetration lets fire and smoke reach the next compartment much sooner than the building was designed for. While the openings can be reached, sealing them is normally straightforward. Wait until ceilings close or areas are occupied and the same work becomes harder to reach. Around Broadgate, it’s better to renew all the failing joints at once. Send photos of each area and we will quote for the lot.

A quote for service penetrations depends on quantities, condition and access, and any specification that applies. Call for a quote.

Why choose Mastic Doctor in Broadgate

  • 12-month guarantee on workmanship
  • Constructionline member
  • A fixed quote before work starts
  • Work carried out by CSCS-carded applicators

See our cost guide and our accreditations.

Aftercare for building managers

Keep the joints in good shape with a few simple steps:

  • Make fire stopping part of every scope that crosses a fire-resisting wall
  • Treat an open penetration as a priority repair
  • Don’t let anyone top up a fire seal with the wrong product
  • File the specified details where the next contractor can find them

Never top up a fire seal with foam, ordinary silicone or filler. A repair should use the original product, installed the same way unless the designer specifies otherwise.

Regular walk-rounds of service areas are worth the time. A cracked or disturbed seal found early is a small job compared with dozens found at once.

Our process

We schedule the visit to fit the site hours and access windows you give us. While we’re working, the area stays contained and tidy, and your contact hears from us before we move to the next area. For work around Broadgate, we aim to finish in one visit, so photos and measurements up front really help. Then the right materials arrive with us.

  1. We start with your penetration schedule, drawings or specification.
  2. We plan the sequence of floors, risers and voids with you.
  3. We compare every service penetration with its tested detail before sealing.
  4. Unsuitable material is removed and the opening cleaned first.
  5. The specified backing and sealant go in to depth and are finished neatly.
  6. Anything outside the detail is reported to you rather than sealed.

What we need from you

  • Clear stock, furniture or equipment away from the joints
  • Confirm the product named in the specification
  • Warn occupants and staff about the work

Request a quote

Send us photos, drawings or a joint schedule are often enough for a fixed quote. If the job needs a look first, we’ll arrange a site visit.

Get a price

Advice

For managing agents and facilities managers

Whether you’re a managing agent, a property factor or an owner’s representative: send details, get a fixed quote, we seal, guaranteed. We can agree access arrangements and keyholder contacts beforehand.

Blocks and communal areas make up much of the work for housing associations and agents. Work can be phased so residents and staff keep access throughout, and each stage is agreed with your contact.

Do you need fire stopping in Broadgate?

Openings in fire-resisting walls normally appear when services are added or changed. A new cable pulled by an electrician, a pipe rerouted by a plumber or a data run drilled through a riser leaves an opening that nobody returns to. Over a few years of fit-outs, a wall can collect a lot of these.

Any of the following is a good reason to get the joints checked over:

  • Fire seals cut back for extra cables and never reinstated
  • Penetration schedules that need working through
  • Improvised or mixed-product fire seals
  • Openings found when ceilings come down for a refit

Large healthcare estates like Wessex Hospital, 2.3 miles east of Broadgate, change their services often, so penetration seals are worth checking after M&E work.

Questions to ask before you book

  • Health and safety accreditation such as CHAS
  • What the guarantee covers, and for how long
  • Will failed sealant be removed rather than covered?
  • Will CSCS-carded applicators be on site?

How to choose a sealant contractor

Accreditations

Trusted. Accredited. Insured.