Bosham fire stopping
Fire-rated and intumescent sealing of service penetrations and linear gaps across Bosham, by CSCS-carded applicators. Fully insured and CHAS accredited.
- Fire-rated sealant that has cracked or shrunk back
- Service penetrations left open after M&E works
- Expanding foam used as fire stopping
Fire stopping for Bosham sites
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Fire stopping in Bosham, done properly
The test standards are BS EN 1366-3 for penetration seals and BS EN 1366-4 for linear joints, with results classified under BS EN 13501-2. A rating such as EI 60 only holds when the product is installed as it was tested. Reproducing the tested arrangement on site is the part we take care of. If you are dealing with fire-rated sealant that has cracked or shrunk back and hidden openings found during inspections, we can help, whatever the surface. Looking for mastic applicators who cover Bosham? We have been sealing commercial buildings since 2005, with CSCS-carded applicators.
Smaller places such as Bosham still have buildings with fire-resisting walls and floors: schools, halls, care homes and commercial conversions. If sealant is what the specification names, we install it around the services exactly as the maker’s detail sets out.
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.
- Where
- Bosham (PO18)
- Wider area
- West Sussex
- Cover
- 12 months on every job
- Price
- A fixed quote before we start
- Telephone
- 01277 525 020
- Updated
- 3 November 2026
FAQs: Bosham
Would you work within a site like St Richard's Hospital?
Yes, hospitals are one of the sectors we cover. Work is phased so departments keep running, under the site’s own rules.
What does the BS 476 change mean for fire-rated sealant in Bosham?
References to BS 476 classes are being removed from Approved Document B from 2 September 2029, after which BS EN 13501-2 classification is the route, subject to transitional arrangements. Our part doesn’t change: the specified product, to its tested detail.
Can the building stay open while you work?
Yes, as long as we plan it. We agree a sequence with your contact so just one area at a time is disrupted.
Can you work to our specification?
Yes. The specification and the manufacturer’s installation guidance are what we work to, and any queries are raised before we start.
Does weather matter for sealant work?
Outside, yes. The joint has to be dry and within the product’s temperature range, so frost, rain or cold mornings can delay outside work. Inside work is seldom held up.
Can you handle several sites?
Yes. Multi-site work and planned programmes are a core part of the service, with each site phased to suit its occupants.
Is Bosham in your area?
Yes. Bosham falls within our area, and the simplest way to start is to speak to us on 01277 525 020 or use the quote form.
On site: what to expect
In a busy building, we agree a sequence with your contact so the disruption stays in one area at once. Each section is protected, cleaned back and sealed before the next one starts. For work around Bosham, we aim to finish in one visit, so photographs and measurements up front really help. Then the right materials arrive with us.
- First we go through the drawings, schedule or specification for the seals and raise any questions before we price.
- On site, each opening is checked against the tested detail it is meant to follow.
- Anything that doesn’t belong in the opening, such as expanding foam or general-purpose filler, is removed.
- We fit the backing the detail asks for, to the stated depth.
- We apply the specified sealant to the depth and around the services as the detail shows.
- If an opening needs something other than sealant, we tell you instead of improvising.
What we need from you
- Warn occupants and staff about the work
- Clear stock, furniture or equipment away from the joints
- Flag any permit to work we will need
Quotes
Tell us about the building, the joints and when you need the work done, and we’ll put a fixed quote together. To get it moving, call 01277 525 020 or email the details over.
Advice
What happens if it’s left?
Open service penetrations matter on ordinary days, not just in a fire: smoke, noise and draughts pass through them every day. Sealing them to the specified detail deals with the fire risk first, and the other benefits follow. For buildings around smaller places like Bosham, water damage can go unnoticed for longer, especially where a building isn’t used daily, so a failed joint can leak for a while before anyone sees it. Renewing joints in good time avoids the problem.
A quote for service penetrations depends on quantities, condition and access, and any specification that applies. Ask us for a fixed quote.
Why choose Mastic Doctor in Bosham
- 12-month guarantee on workmanship
- Constructionline member for supplier checks
- A fixed quote before work starts
- Products installed to the manufacturer’s instructions
See how commercial sealant jobs are priced or our accreditations and insurance.
What sets the cost
A fixed quote reflects the actual work. It takes account of:
- Which sealant the job calls for
- Distance, for remote addresses
- Quantities, in metres or numbers
- Any access equipment needed
The product called for affects the cost, as does the preparation each joint needs, from cutting out to priming and backing rod. Access, phasing and site rules also count.
Details that help us quote
A good diagnosis starts with the right details. Tell us:
- When you need the work done
- Access details, including height
- Whether an asbestos survey exists
- Where the site is, with the postcode
Need a figure for a tender or a budget? Send the scope and any drawings, and we’ll return a fixed quote that you can work with. For a chat about it beforehand, ring 01277 525 020 or use the quote form.
Towns and villages near Bosham
What else we do in Bosham
Where services cross fire walls in Bosham
In England, Approved Document B covers fire stopping of 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. Bosham lies roughly 57 miles out from central London. Offices around the capital are refitted often, and the cabling that follows can breach fire-resisting walls.
Where a unit on an estate such as Southfield Industrial Park., which lies north of Bosham, has fire-resisting walls between offices and warehouse, any new service through them should be sealed to the tested detail. At a university such as University of Chichester (3.6 miles east of Bosham), labs, lecture blocks and residences are re-serviced often, so penetration seals are best checked after M&E work. Hotels such as The Millstream Hotel (to the west of Bosham) rely on fire-resisting walls between bedrooms and corridors, and refits that add services leave penetrations to seal where fire-rated sealant is specified.
Bosham is about 3 miles west of Chichester, in West Sussex. Looking for fire stopping in Bosham? We can help. Across West Sussex, 373 places are covered, Bosham among them. We also cover Portsmouth, around 10 miles from Bosham.
Work on service penetrations is covered throughout PO18, for business premises of every kind. Among the streets we cover are High Street, Viking Way and Merryweather Road. Close to Bosham, our area also takes in Broadbridge (1 mile north-east), Chidham (1 mile west), Bosham Hoe (1 mile south), Nutbourne (2 miles north-west) and Fishbourne (2 miles east). Further afield, our area takes in Bognor Regis (8 miles east), Chichester (3 miles east), Selsey (7 miles south-east), Littlehampton (14 miles east), Rustington (15 miles east) and Portfield (4 miles east).
Landmarks near Bosham
We work on buildings around The Berkeley Arms Public House. The nearest railway station is Bosham station, roughly 0.8 miles north-east of the centre. A little further out are Chichester Cathedral Treasury (3.2 miles east) and St Richard's Hospital (3.8 miles east). Not far away are Nutborne Marshes and Stoke Down.
Different surfaces, different methods
Small ducts
We seal around ducts only within what the tested detail covers. The ductwork, its supports and any dampers are for the ductwork contractor.
Linear joints
Joints at the top of partitions may need to move as the slab above deflects. We use the product and backing the detail names for that movement, along the full length of the run.
What we can’t put right
Part of a good diagnosis is knowing where sealant stops. You’ll hear from us if the cause turns out to be any of the following:
- Approving the work on behalf of building control
- Construction that lacks the fire resistance the seal relies on
- Reviewing a building’s overall fire safety
If in doubt, phone 01277 525 020 or send photos by email and we will say what we think.
Where we work in Bosham
- Joints between fire-resisting walls and floors
- Service gaps in risers
- Pipe penetrations
- Linear gaps at wall heads
- Cable penetrations
- Small duct penetrations where the tested detail allows
General trades versus a specialist
There’s also the paperwork. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we will confirm the paperwork you need with the quote.
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. That’s why many clients bring in a specialist from the beginning.