Fire Stopping in Hilsea
Fire-rated and intumescent sealing of service penetrations and linear gaps in Hilsea and across Portsmouth. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Fire sealant pulled out of the opening
- Openings left by services added after handover
- Non-fire-rated filler around services
Fire stopping in Hilsea
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Keeping the joints sound
Problems stay small when the joints are checked regularly. In particular:
- Settle who seals which penetrations at the start of a project
- Keep product data and details in the fire safety file
- Make fire stopping part of every scope that crosses a fire-resisting wall
- Keep general-purpose fillers away from compartment walls
Once the seals are in, tell other trades they exist and must not be disturbed. Any seal cut back for a new service needs reinstating to its tested detail.
Keep a register of where seals are and what they are made of. It tells the next contractor exactly what to reinstate, and it helps at inspections.
Fire stopping for commercial buildings in Hilsea
Sealant is the specified answer for plenty of openings, such as metal pipes, cables and some small ducts where the detail covers them. Larger openings and some plastic pipes call for collars, wraps, batts or boards instead. If the detail calls for something other than sealant, we say so rather than force sealant into it. We work on service gaps in risers, joints between fire-resisting walls and floors and linear gaps at wall heads, and the failures we’re asked to look at most are non-fire-rated filler around services and hidden openings found during inspections. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, the work in Hilsea is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.
Around smaller places like Hilsea, many commercial buildings are conversions or extensions of older ones, so it’s worth confirming the wall or floor type before choosing the seal. We match the product to the substrate and service, and say so if a collar, wrap or batt is the specified item.
A 12-month guarantee applies to all our work. If an installation problem shows up, ring 01277 525 020 or use the quote form and we will arrange a return visit.
- Place
- Hilsea (PO2, PO3, PO6)
- Wider area
- Portsmouth
- Guarantee
- A 12-month guarantee
- Quotes
- A fixed quote before we start
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
More services for Hilsea
Building owners, agents and FMs in Hilsea
When you manage a building on behalf of an owner, you need clear quotes and clear reporting. You get a fixed quote, an agreed scope and a walk round at the end, plus a 12-month guarantee.
As a CHAS accredited contractor and Constructionline member, we are straightforward to vet for your supplier list. Our insurance certificate can be sent along with the quote.
Should maintenance staff do it?
Putting right a botched joint often costs more than sealing it well at the start, since all of it has to come out and the faces be cleaned back again. That’s why many clients bring in a specialist from the beginning.
Some joints are best left to specialists: for example fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. A poor seal in places like these tends to cost more to put right later.
Surface by surface
Linear joints
Joints at the top of partitions may need to move as the slab above deflects. The specified product and backing for that movement are what goes in, along the full length of the run.
Small ducts
Ducts are only sealed with sealant where the detail allows it. Dampers and ductwork systems themselves are outside our work.
Questions about Hilsea
Could you schedule work at a campus like University of Portsmouth 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 does the BS 476 change mean for fire-rated sealant in Hilsea?
From 2 September 2029, Approved Document B drops its BS 476 references in favour of BS EN 13501-2 classification, with transitional arrangements. Our part doesn’t change: the specified product, to its tested detail.
Are your applicators CSCS-carded?
Yes. Should the site need card details in advance, tell us and we’ll confirm them with the quote.
Is it fine to apply new sealant on top of old?
No. We cut the old material out and clean the joint back before sealing, because fresh silicone will not bond with aged silicone.
Which sealant will you use?
Where there’s a specification, we use the product it names. If not, we choose for the movement, the surfaces and the conditions, in line with the manufacturer’s guidance.
How long do sealant joints last?
It depends on movement, UV and weather, cleaning, traffic and the product. Treat them as maintenance items and inspect them regularly.
Do you take on small jobs?
Whatever the size, the process is the same: send details, get a fixed quote, we seal, guaranteed.
Fire stopping around Hilsea: how the place shapes the job
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. What we install is set by the specification, and it goes in to the tested detail. There are a good number of hotels within about 2 miles of Hilsea. A hotel refit often runs new services through compartment walls between bedrooms and corridors, and each opening needs the specified seal.
Shop fits in centres such as Victory Retail Park (1.7 miles south-west of Hilsea) can bring new services through fire-resisting walls between units, which then need the specified seal. Residences at universities like University of Portsmouth, 2.5 miles south of Hilsea, have compartment walls that must be resealed whenever services change. Hospital estates such as Queen Alexandra Hospital (1.4 miles north of Hilsea) are divided into fire compartments, and any service penetration through them should be sealed to the specified, tested detail.
Hilsea is about 2 miles north of Portsmouth, in Portsmouth. We cover commercial sites throughout Hilsea, for single jobs and planned programmes alike. Across Portsmouth, 19 places are covered, including Hilsea.
Commercial sites across PO2, PO3 and PO6 are covered. For a building on Vita Road, Conan Road and Arras Road or nearby, we can quote for service penetrations. Close to Hilsea, our area also takes in Cosham (1 mile north), North End (1 mile south-west), Tipner (1 mile south-west), Wymering (1 mile north) and Rudmore (1 mile south-west). A short drive away, we cover Southsea (3 miles south), Portsea (3 miles south-west) and Portsmouth Point (3 miles south-west).
What’s near Hilsea
Around Hilsea, our work takes us to commercial buildings near Alexandra Park, Trafalgar School and Coach and Horses pub. The closest station to Hilsea is Hilsea station, roughly 0.5 miles east. A little further out are World War I Remembrance Centre (0.8 miles east) and Tricorn Centre (2.1 miles south-west). The countryside around Hilsea includes Milton Locks and Portsdown Hill.
How a job runs
Occupied buildings need a little choreography. The work area is signed and kept contained, keep walkways clear and move on in phases so staff and visitors can carry on around us. For a site in Hilsea, we plan so the whole job is done in one go where possible. Photos with rough sizes let us arrive with everything needed.
- We start with your penetration schedule, drawings or specification.
- Access, permits and the order of areas are agreed with the site team.
- We compare every service penetration with its tested detail before sealing.
- Unsuitable material is removed and the opening cleaned first.
- The specified backing and sealant go in to depth and are finished neatly.
- Anything outside the detail is reported to you rather than sealed.
What we need from you
- Make sure the joints can be reached
- Tell us your opening times and when work is allowed
- Confirm the product named in the specification
Get a fixed quote
The quickest route to a quote is a few photographs and the site postcode. Send them through the quote form, or ring 01277 525 020 or email us if you’d rather talk the job through.
Advice
Cost factors for service penetrations
The price varies from site to site. Expect it to depend on:
- Specialist products, such as fire-rated or hygienic sealants
- How much existing material needs removing
- Site requirements such as inductions and permits
- Location, for remote and island sites
No two sites price the same: joint size, product, access and site hours all play a part. Send the details and a fixed figure follows.
Details that help us quote
The more we know, the firmer the quote. When you get in touch, include:
- Asbestos survey details if the building is older
- Access details, including height
- Any specification or named product
- Drawings or a marked-up plan, if available
Need a figure for a tender or a budget? Send the scope and any drawings, and we’ll return a fixed quote you can plan around. For a chat about it beforehand, speak to us on 01277 525 020 or send details through our quote form.