The Mastic Doctor team standing beside their branded vans outside an office building
Brighton and Hove · England

Portslade fire stopping

Fire-rated and intumescent sealing of service penetrations and linear gaps in Portslade. CHAS accredited and fully insured, with a 12-month guarantee.

  • Unsealed openings around new pipes and cables
  • Improvised or mixed-product fire seals
  • Fire sealant pulled out of the opening
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
Constructionline member
£5m public liability

Fire stopping for businesses in Portslade

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

About our fire stopping in Portslade

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 part is installing fire-rated and intumescent sealant at those openings and along linear gaps, where the specification calls for it. We work to the product’s tested detail for every seal rather than guesswork. The enquiries we see most involve non-fire-rated filler around services and openings found when ceilings come down for a refit, on service gaps in risers, linear gaps at wall heads and cable penetrations. Looking for mastic applicators who cover Portslade? Mastic Doctor has worked for contractors, FMs and building owners since 2005, CHAS accredited and a Constructionline member.

In places the size of Portslade, fire-resisting walls and floors are found in schools, care homes, health centres and mixed-use buildings. Specified fire-rated sealant goes around new services there, built to match the manufacturer’s detail.

Work we carry out comes with a 12-month guarantee. Should something we installed fail, speak to us on 01277 525 020 or email us and we’ll come back to it.

The Mastic Doctor team beside their liveried vans in front of an office building
Where
Portslade (BN41, BN3, BN42)
Region
Brighton and Hove
Cover
A 12-month guarantee
Quote
Fixed quote, scope in writing
Call
01277 525 020
Last updated
3 November 2026

Compartment walls and floors in Portslade

Fire stopping of openings and penetrations in England falls under Approved Document B. From 2 September 2029, BS 476 references are being taken out of Approved Document B, leaving BS EN 13501-2 classification as the route, subject to the Government’s transitional arrangements. Either way, we install the specified product to its tested detail. Central London is about 46 miles from Portslade. Tenant changes on commuter-belt business parks mean regular fit-outs, and new services through compartment walls, and the gaps need sealing with the specified product.

Tenant changes at centres like Goldstone Retail Park (to the east of Portslade) often mean new services through walls between units. On a hospital site such as Nevill Hospital (1.1 miles east of Portslade), fire-rated sealant goes in where the specification calls for it, with the work planned around the estates team’s permits. For a unit at a site such as Victoria Road Trading Estate, 0.6 miles to the south-east of Portslade, new power or data runs between office and warehouse can breach a compartment wall.

Portslade is about 1 mile west of Brighton and Hove, in Brighton and Hove. Any commercial site in Portslade is covered. Portslade is one of 29 places we cover in Brighton and Hove.

We cover the BN41, BN3 and BN42 postcode districts. Among the streets we cover are Mill Lane, Crown Road and Drove Road, and sites on any of them can send details for a fixed quote. Main routes into Portslade include the A293, which helps when planning parking and deliveries for the job. If your building is just outside Portslade, we cover Hangleton (1 mile north-east), Southwick (1 mile south-west), Kingston by Sea (1 mile west), Shoreham-by-Sea (2 miles west) and Old Shoreham (3 miles west). Further afield, our area takes in Brighton (4 miles east), Carlton Hill (4 miles east), Hanover (4 miles east), West Hill (3 miles east), Brunswick (3 miles south-east) and Seven Dials (3 miles east).

What’s near Portslade

Around Portslade, our work takes us to commercial buildings near The Mill House, King's School and Benfield Hill and the streets around them. For rail, the closest station is Fishersgate station, roughly 0.7 miles south of the centre. Nearby you will also find Churchill Square (3.4 miles south-east) and British Engineerium (1.8 miles east). The countryside around Portslade includes Thundersbarrow Hill and Shoreham Beach.

Map of Portslade © OpenStreetMap contributors

Should maintenance staff do it?

Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.

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.

Your questions answered

Is a smaller place like Portslade outside your area?

Not at all. Portslade is within our area. We work across Greater London and the South East. Send photos and a list of what needs doing, and we will plan the job to need as few trips as possible.

Is Victoria Road Trading Estate, near Portslade, within your area?

Yes. We cover Portslade and the area around it, including industrial estates, business parks and retail parks such as Victoria Road Trading Estate. A few photos and the unit address let us price the work.

How soon can the area be used again?

That comes down to the sealant and the temperature. Some products skin over quickly but need longer to cure fully, so we’ll confirm the curing time on the day.

Can you reseal penetrations after our M&E works?

Yes. Send the schedule or marked-up drawings and the specified product details for a fixed quote. Work can run area by area behind the M&E trades keeping pace with the programme.

Is the work guaranteed?

Yes. Our workmanship is backed for 12 months.

What site paperwork can you supply?

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

How much does the work cost?

We don’t publish prices, as every site differs. Send photographs or drawings and we’ll price it at a fixed figure.

Surface by surface

Cables and cable bundles

Data cabling added after handover is a regular cause of open service penetrations. Openings around new cables are resealed to the detail, and we tell you if the bundle exceeds what sealant covers.

Plastic pipes

Waste and drainage pipes through floors are a frequent case. The detail decides whether sealant alone is enough.

Why act early in Portslade

It is cheaper to seal service penetrations as each services package finishes than to come back for them later. While the area is still open, every opening is easy to see and reach, and the right detail can be checked at the time. Over time, UV, weather and movement wear any sealant out. Replacing it before it fails keeps water out.

The product called for affects the cost, and so does the preparation. Access, phasing and site requirements come into it too.

What you get with us

  • Commercial sealant work since 2005
  • Failed material removed, not covered up
  • One number for every site we cover
  • Products installed to the manufacturer’s instructions

See how commercial sealant jobs are priced or our accreditations and insurance.

Our process

On arrival, we report to your site contact and complete whatever induction the building runs. Everything around the joints gets protected before anything is cut or cleaned, with the work itself normally taking longer where risers, ceiling voids or occupied floors have to be worked through in sequence. If neighbouring businesses or buildings around Portslade need work too, visits can be combined. Mention the building’s opening times and we’ll work within them.

  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. Old or wrong materials are cut out.
  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. Completed areas are checked with you, with the records agreed when we quoted.

What we need from you

  • Clear stock, furniture or equipment away from the joints
  • Send any specification or drawings in advance
  • Warn occupants and staff about the work

Request a quote

Every quote starts with the facts: the joints involved, quantities, access and the product called for. Send what you have, and we will arrange a site visit if anything is unclear.

Get a quick quote

Read more

What sealant work can’t fix

Honesty saves time and money. New sealant won’t cure:

  • Large openings beyond what any sealant detail covers
  • Walls or floors that aren’t fire-resisting to begin with
  • Reviewing a building’s overall fire safety

Not sure which it is? You can ring 01277 525 020 or email us and we will tell you honestly.

Surfaces we seal

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

Building owners, agents and FMs in Portslade

If you look after buildings for someone else, clear figures and clear communication matter. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative, plus a 12-month guarantee.

Agents, factors and owners’ representatives all follow the same route: send details, get a fixed quote, we seal, guaranteed. Keys, access and contacts can be agreed in advance.

Accreditations

Trusted. Accredited. Insured.