
Fire-rated sealing and fire stopping in Southwick, West Sussex
Need fire stopping in Southwick? It’s simple: send details, get a quote, we seal, guaranteed.
- Service penetrations left open after M&E works
- Open linear gaps along the top of fire-resisting walls
- Seals that don’t match their tested detail
Fire stopping across Southwick
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
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 the job ends with a walk round and sign-off. For a job in Southwick, the main thing is a clear picture of the work. A fixed quote follows.
- First we confirm the product and tested details named in the specification.
- We sort the openings by the detail each one needs.
- Old or wrong materials are cut out.
- Where the detail needs backing, it goes in at the stated depth.
- Fire-rated or intumescent sealant goes in around the services and is tooled off.
- Completed areas are checked with you, with the records agreed when we quoted.
Getting the site ready
- Agree which areas must stay open
- Move anything stored against the joints
- Send any specification or drawings in advance
Ask for a quote
Specifications, drawings and tender packages are welcome with any enquiry, and we will price against exactly what is specified. Smaller jobs need nothing more than photographs and a few notes.
Read more
Fire stopping in Southwick, done properly
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. We use sealant where it is the specified product, and we tell you when a detail calls for something else. If you are dealing with hidden openings found during inspections and openings left by services added after handover, we can put it right. Whether you call it commercial sealant work, mastic application or joint sealing, the work in Southwick is the same: the right product in a properly prepared joint.
Converted and extended buildings around places like Southwick can mix old and new construction, so it’s worth confirming the wall or floor type before choosing the seal. The right product depends on the wall or floor and the services passing through, and we will tell you if the detail calls for something other than sealant.
The 12-month guarantee is for workmanship rather than wear and tear. How long a sealant joint lasts depends on movement, exposure, cleaning and use, so we spell out the cover before we begin.

- Place
- Southwick (BN42, BN41, BN43)
- Wider area
- West Sussex
- Cover
- A 12-month guarantee
- Quote
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Updated
- 3 November 2026
Towns and villages near Southwick
Also in Southwick
Why act early in Southwick
An unsealed opening affects more than fire safety: smoke, noise and draughts pass through them every day. Sealing them to the specified detail deals with the fire risk first and the building feels the difference. Sealant hardens, cracks and loses grip with age, UV and movement. Renewing it in good time keeps the building weathertight.
No two sites price the same: the joint sizes, the specified product, access and working hours each have a bearing. A fixed quote follows once we understand the job.
Why us?
- Public liability insurance in place
- Constructionline member for supplier checks
- Over 20 years of commercial sealing
- 12 months’ guarantee on every job
Read how commercial sealant jobs are priced and our accreditations and insurance.
Doing it in-house
Putting right a botched joint often costs more than sealing it well at the start, because the whole bead must be removed and the faces cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.
What you see is the finished bead, but most of the work is hidden. Backing rod, primer where specified and a joint designed to move with the building are where general trades tend to cut corners.
FAQs: Southwick
How does the removal of BS 476 from Approved Document B affect fire-rated sealing in Southwick?
Approved Document B loses its BS 476 references from 2 September 2029, and BS EN 13501-2 becomes the route, subject to transitional arrangements. Our part doesn’t change: the specified product, to its tested detail.
Is hospital work, at somewhere like Southlands Hospital, something you do?
Yes. We work in healthcare settings as well as offices and schools. We follow the site’s permits, sign-in and infection-control procedures in every area.
Can you handle several sites?
Yes. We take on portfolio and planned maintenance work, with each site phased to suit its occupants.
How long will the new sealant last?
Nobody can honestly give a figure in years, since movement, weather, cleaning and use all affect it. Regular inspection is the best way to catch problems early.
Are you CHAS accredited and on Constructionline?
Yes. CHAS accredited, Constructionline member, and our applicators hold CSCS cards.
Which sealant will you use?
If the job is specified, we follow the specification. If not, we choose for the movement, the surfaces and the conditions, in line with the manufacturer’s guidance.
Can the sealant be colour-matched?
That depends on the product specified. Some ranges offer many colours, others very few, so the available colours are confirmed with the quote.
What we can’t put right
Our job is the joint, not everything around it. On its own, sealant can’t deal with:
- Plastic pipes whose detail calls for a collar or wrap
- Fire doors, dampers or other fire safety equipment
- Writing the fire-stopping specification
If you’re not sure, just call the office on 01277 525 020 or send photos by email and we’ll give you a straight answer before you book.
What we seal
- Linear gaps at wall heads
- Service gaps in risers
- Joints between fire-resisting walls and floors
- Small duct penetrations where the tested detail allows
- Pipe penetrations
- Cable penetrations
What we’re called out for in Southwick
Some seals fail because the wrong product went in: builders’ foam or ordinary silicone used to fill a hole. The opening looks sealed but has no fire test evidence behind it.
If one of these sounds familiar, it’s time for a closer look:
- Penetration schedules that need working through
- Unsealed penetrations discovered above suspended ceilings
- Fire stopping installed outside its tested range
- Openings left by services added after handover
Theatres, wards and plant rooms at sites like Southlands Hospital, 1 mile west of Southwick, all have compartment walls crossed by services.
What to look for in a quote
- Is depth set with backing rod, or bond-breaker tape in shallow joints?
- The named product and why it was chosen
- Are they CHAS accredited or on Constructionline?
- How they handle RAMS and site documents
Quoting for work in Southwick
We price every job individually. The things that drive the figure:
- Joint width, depth and condition
- Distance, for remote addresses
- How much existing material needs removing
- The product specified
A quote for service penetrations depends on quantities, condition and access. Call for a quote.
What we need to price the job
For an accurate fixed quote, we need to understand the site. Useful things to include:
- Anything awkward about access or site hours
- What the building is and how it’s used
- Specification clauses that apply
- A wide shot and a close-up of the area
Send details, get a quote, we seal, guaranteed: that’s how every job runs. The first step is to give us a call on 01277 525 020 or email the details over with what you know.
Fire-rated sealing for Southwick buildings
Southwick lies roughly 46 miles out from central London. Office refits around the commuter belt bring new cabling through fire-resisting walls; the gaps need the specified seal. For England, the fire stopping of penetrations is dealt with in 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. We install whatever has been specified, to the product’s tested detail.
Tenant changes at centres like Goldstone Retail Park (2.7 miles east of Southwick) often mean new services through walls between units. Schools such as Eastbrook Primary Academy often have new data and services installed during holidays, and penetrations through fire-resisting walls should be checked afterwards.
Southwick is about 2 miles east of Shoreham-by-Sea, in West Sussex. Southwick sits inside our coverage and the rest of West Sussex, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. 373 places across West Sussex fall within our area, including Southwick.
Business premises anywhere in BN42, BN41 and BN43 are within our area for service penetrations. We cover commercial and managed buildings on Station Road, Roman Crescent and Southwick Street and the roads nearby. You will find Southwick on or near the A259 and A270. Sites close to Southwick are covered too, including Kingston by Sea (1 mile north-west), Portslade (1 mile north-east), Shoreham-by-Sea (2 miles west), Hangleton (2 miles north-east) and Old Shoreham (2 miles west). Bigger towns within reach include Worthing (7 miles west), Haywards Heath (13 miles north-east), Burgess Hill (10 miles north-east), Littlehampton (13 miles west), Lancing (4 miles west) and Rustington (12 miles west).
Near you in Southwick
We work on buildings around Shoreham Academy, Benfield Hill and The Ship Inn. There’s a railway station in Southwick itself: Southwick station. Other landmarks nearby include Southlands Hospital (1 mile west) and Churchill Square (4 miles east). Not far away are Shoreham Beach and Thundersbarrow Hill.