Fire stopping in St Denys
Sealant work in St Denys for main contractors, managing agents and facilities managers: fire-rated and intumescent sealing of service penetrations and linear gaps, quoted at a fixed price.
- Snag lists that include open service penetrations
- Openings found when ceilings come down for a refit
- Unsealed openings around new pipes and cables
Fire stopping in St Denys
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Owners, agents and contractors
If you look after buildings for someone else, clear figures and clear communication matter. You get a fixed quote, an agreed scope and a walk round at the end.
Facilities managers want contractors who arrive with the paperwork sorted. Tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we’ll confirm with the quote.
About our fire stopping in St Denys
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. If you have fire-stopping items raised at inspection or handover and fire stopping installed outside its tested range, we can help, whatever the surface. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, the work in St Denys is the same: the right product in a properly prepared joint.
Converted and extended buildings around places like St Denys 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’ll tell you if the detail calls for something other than sealant.
Every job we finish is backed by a 12-month workmanship guarantee. If our installation lets you down in that time, we return and fix it.
- Place
- St Denys (SO17, SO18, SO14)
- Wider area
- Southampton
- Cover
- 12 months on every job
- Price
- Quoted before any work starts
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Where services cross fire walls in St Denys
In England, Approved Document B covers fire stopping of openings and penetrations. 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. The 2 miles around St Denys include four care or nursing homes. Care settings depend on compartmentation, so service penetrations made during maintenance or refurbishment need sealing with the specified product.
In a retail centre such as Marlands Shopping Centre, 1.5 miles south-west of St Denys, any fire-resisting wall between units that is crossed by new services needs sealing to the tested detail. Residences at universities like University of Southampton, 0.7 miles north-west of St Denys, have compartment walls that must be resealed whenever services change.
St Denys is about 1 mile north-east of Southampton, in Southampton. Anywhere in SO17, it works the same way: send details, get a fixed quote, we seal, and the work is guaranteed. We work across 30 places in Southampton, large and small.
Postcode districts covered here: SO17, SO18 and SO14 for service penetrations. If your site is on Ivy Road, Lawn Road and Kent Road or close by, we can quote for service penetrations. Being close to the A335 and A3035, St Denys is easy to get to with materials and equipment. Sites close to St Denys are covered too, including Portswood (1 mile north-west), Bitterne Manor (1 mile south-east), Southampton (1 mile south-west), Bitterne Park (1 mile east) and Inner Avenue (1 mile south-west). Further afield, our area takes in Maybush (3 miles west), Coxford (3 miles west), Millbrook (3 miles west), Weston (3 miles south) and Redbridge (4 miles west).
What’s near St Denys
Recent enquiries here include premises near South Western Arms, Riverside Park and St Mary's Independent School and the streets around them. St Denys has its own railway station: St Denys station. Well-known places in the area include Royal South Hants Hospital (0.9 miles south-west) and Marlands Shopping Centre (1.5 miles south-west). Green spaces nearby include Netley Common.
From enquiry to sign-off
Occupied buildings need a little choreography. The work area is signed and kept contained, keep walkways clear and work section by section so the rest of the building stays in use. For a job in St Denys, the main thing is a clear picture of the work, so send photos of each area. A fixed quote follows.
- We start with your penetration schedule, drawings or specification.
- We plan the sequence of floors, risers and voids with you.
- We compare every service penetration with its tested detail before sealing.
- Foam, ordinary sealant and debris come out so the seal starts clean.
- Backing and fire-rated sealant are installed to the detail and tooled.
- Anything outside the detail is reported to you rather than sealed.
What we need from you
- Send any specification or drawings in advance
- Tell staff and tenants when we will be in
- Flag any permit to work we’ll need
Get a fixed quote
For a fixed quote, phone 01277 525 020 or email drawings and photos with the site address and an outline of the work. Our quote form is another easy route.
Read more
Do you need fire stopping in St Denys?
Fire stopping can get squeezed at the end of a programme, or done by whoever is on site. That is how unsuitable products and improvised details end up in compartment walls.
Things that typically lead to an enquiry:
- Fire seals cut back for extra cables and never reinstated
- Snag lists that include open service penetrations
- Openings left by services added after handover
- Openings found when ceilings come down for a refit
On a site such as Itchen Business Park, which lies north of St Denys, every fit-out that runs new services through a compartment wall leaves penetrations to seal with the specified product.
Comparing quotes
- Their pre-qualification and accreditations
- The named product and why it was chosen
- Is depth set with backing rod, or bond-breaker tape in shallow joints?
- Their plan for phasing and protecting the area
When it isn’t the sealant
Honesty saves time and money. Fresh joints won’t solve:
- Large openings beyond what any sealant detail covers
- Construction that lacks the fire resistance the seal relies on
- Designing or specifying fire stopping, which sits with the designer or fire engineer
If you’re not sure, just call 01277 525 020 or use the quote form and we’ll give you a straight answer before you book.
Joints and surfaces we work on
- Small duct penetrations where the tested detail allows
- Cable penetrations
- Linear gaps at wall heads
- Pipe penetrations
- Joints between fire-resisting walls and floors
- Service gaps in risers
Maintenance after handover
A few simple habits keep the new joints working:
- Arrange inspection before areas are covered up
- Ask the designer to confirm details early on refits
- Make fire stopping part of every scope that crosses a fire-resisting wall
- Keep product data and details in the fire safety file
Keep the product data and installation details with the building’s fire safety information. It makes later repairs much easier to match.
Write fire stopping into the scope of any work crossing a compartment wall or floor. Then the seal goes in while the area is open instead of being left for someone else.
Surface by surface
Drylining partitions
Holes in board are often cut larger than needed. If the gap exceeds the tested range, sealant alone won’t do.
Cables and cable bundles
Cable penetrations are frequently sealed with fire-rated sealant where the detail allows. The detail limits bundle size and the gaps between and around cables, so we check before sealing.
FAQs: St Denys
What does the BS 476 change mean for fire-rated sealant in St Denys?
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.
Can work at a site such as University of Southampton fit around teaching?
Yes. Tell us the term dates, vacation periods and access windows, and we will plan the work around them. We’re CHAS accredited and a Constructionline member, and paperwork such as RAMS is confirmed with the quote.
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.
What do you charge?
There isn’t a price list, because every site is different. With photographs or drawings, we can give you a fixed quote.
Do your applicators hold CSCS cards?
Yes. Should the site need card details in advance, tell us and we will confirm them with the quote.
How do you choose the sealant?
Where there’s a specification, we use the product it names. Otherwise, we recommend a product to suit the joint’s movement, the substrate and the conditions, following the manufacturer’s guidance.
Do you hold CHAS accreditation?
Yes. CHAS accredited, Constructionline member, and our applicators hold CSCS cards.