Cadnam fire stopping
Fire-rated and intumescent sealing of service penetrations and linear gaps in Cadnam and across Hampshire. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Unsealed joints where partitions meet the slab
- Fire stopping installed outside its tested range
- Openings left by services added after handover
Fire stopping across Cadnam
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Fire stopping in Cadnam, done properly
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 job is fitting fire-rated and intumescent sealant at those service penetrations, and along linear gaps, where it is the specified product. We work to the product’s tested detail for every seal, not a rule of thumb. The enquiries we see most involve non-fire-rated filler around services and openings left by services added after handover, on pipe penetrations, linear gaps at wall heads and small duct penetrations where the tested detail allows. Most enquiries from Cadnam start with one failed joint and grow into a wider look at the building: we check the joints around it and give you an honest view of what needs doing now and what can wait.
Around smaller places like Cadnam, penetration seals come up in schools, halls, pubs with rooms, care homes and farm buildings used as offices. Any service penetration through those walls should be closed with the specified product, set out as its test evidence shows.
Whoever the client is, the cover is the same: twelve months on the work we carried out. Faults in the structure, damage and other trades’ work fall outside it, and we say so plainly.
- Location
- Cadnam (SO40)
- Wider area
- Hampshire
- Guarantee
- 12 months on our workmanship
- Price
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Keeping the joints sound
Your facilities or cleaning team can help the joints last. Pass these on to them:
- Brief every trade that openings they make must be sealed
- Look above ceilings when tiles are lifted for other jobs
- File the specified details where the next contractor can find them
- Ask which product is in place before decorating
Store the specified product details somewhere the next contractor can find them. It makes later repairs much easier to match.
On fit-outs, get the fire-stopping specification agreed before the services go in. Details can then be picked to suit the actual pipes, cables and ducts, and the work runs in step with the M&E.
Why it’s worth doing now in Cadnam
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. For buildings around smaller places like Cadnam, 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.
What a job costs comes down to the quantity of joints, how much old material needs removing and how the joints are reached. Call for a quote when you are ready.
Why us?
- 12 months’ guarantee on every job
- Specification-led, product-correct work
- Over 20 years of commercial sealing
- Constructionline member for supplier checks
Read what affects the cost and our accreditations and insurance.
Surface by surface
Linear joints
Linear joints run along the head of a wall, at a slab edge or between two fire-resisting elements. Their tested detail, under BS EN 1366-4, sets the width, depth, backing and movement allowed and the installation has to fit inside those limits.
Plastic pipes
Plastic pipes soften and collapse in a fire. Small sizes are sometimes covered by an intumescent sealant detail, though larger ones normally call for a collar or wrap. We check the pipe material and diameter against the detail before we start.
Common questions from Cadnam clients
What does the BS 476 change mean for fire-rated sealant in Cadnam?
Approved Document B loses its BS 476 references from 2 September 2029, and BS EN 13501-2 becomes the route, subject to transitional arrangements. Whichever applies, we install the specified product to its tested detail; the specification is for the designer to set.
Do you cover business parks and estates near Cadnam, such as Mortimer Trading Estate?
Yes. Estates, retail parks and business parks around Cadnam, Mortimer Trading Estate among them, are all within reach. To start, just call 01277 525 020 or send details through our quote form with the unit, the joints involved and your access times.
Do you take on small jobs?
Small jobs are welcome alongside larger packages. Send details for a fixed quote.
Can you work while the building is occupied?
Yes, with some planning. We agree a sequence with your contact so just one area at a time is disrupted.
How long do sealant joints last?
There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Treat them as maintenance items and inspect them regularly.
Can you follow the specification on our project?
Yes. The specification and the manufacturer’s installation guidance are what we work to.
Do you seal on top of existing sealant?
No. Failed sealant is removed and the faces cleaned back to sound, dry material first, because fresh silicone will not bond with aged silicone.
What we are called out for in Cadnam
On a busy project, programme pressure can mean fire stopping is rushed or left to whichever trade is closest. That is when untested combinations creep in.
If one of these sounds familiar, it’s time for a closer look:
- Old intumescent sealant that has split away
- Seals disturbed by maintenance and left open
- Non-fire-rated filler around services
- Improvised or mixed-product fire seals
On estates like Mortimer Trading Estate, 2.4 miles north-east of Cadnam, the wall between office and warehouse is often fire-resisting, and cables through it need the specified seal.
What to look for in a quote
- Whether primer will be used where the manufacturer specifies it
- Their approach to joint depth and backing
- Health and safety accreditation such as CHAS
- Their public liability cover
Places near Cadnam
What else we do in Cadnam
Our process
Where the site stays busy, the work is phased so only one area is out of use at a time. Each area is protected, prepared and sealed before we move to the next. For work around Cadnam, we aim to finish in one visit, so photographs and measurements up front really help. Then the right materials arrive with us.
- We read the specification, drawings or penetration schedule you send and raise any questions before we price.
- On site, each opening is checked against the tested detail it is meant to follow.
- Unsuitable fillers and loose debris are taken out of each opening.
- 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
- Tell us which areas need to stay in use
- Tell us your opening times and when work is allowed
- Confirm the product named in the specification
Ask for a quote
For a fixed quote, give us a call on 01277 525 020 or send photos by email, telling us the site location and the nature of the job. Our quote form is another easy route.
Related advice
Service penetrations in Cadnam buildings
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 area within 2 miles of Cadnam holds a number of hotels. Hotels are divided into compartments, and refurbishments that add pipes and cables through bedroom and corridor walls leave gaps to close.
Halls and meeting rooms at places like Church of St Mary sometimes gain new services, and any compartment wall crossed needs the specified seal. For a hospital such as Tatchbury Mount Hospital, 2.2 miles east of Cadnam, penetration sealing is usually phased ward by ward, with infection-control rules agreed first.
Cadnam is about 3 miles west of Totton, in Hampshire. We cover Cadnam, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. 723 places across Hampshire fall within our area, Cadnam among them. We also cover Southampton, some 8 miles away.
Business premises anywhere in SO40 are within our area. Buildings on Old Lyndhurst Road, White Hart Lane and Southampton Road are within our area for service penetrations. Nearby places we also cover include Wittensford (1 mile west), Bartley (1 mile south-east), Copythorne (1 mile north-east), Newbridge (1 mile north) and Winsor (1 mile east). Bigger towns within reach include Winchester (15 miles north-east), Eastleigh (11 miles east), Totton (3 miles east), Chandler's Ford (9 miles north-east), Hedge End (12 miles east) and Lymington (11 miles south).
What’s near Cadnam
Recent enquiries here include premises near The White Hart pub and the streets around them. Cadnam’s nearest station is Ashurst New Forest station, roughly 3.1 miles south-east. Other landmarks nearby include Tatchbury Mount Hospital (2.2 miles east) and National Dairy Museum (3.6 miles south-east). Green spaces nearby include Copythorne Common.
What affects the price in Cadnam
Your fixed quote is built from the real scope. It allows for:
- Location, for remote and island sites
- Whether old sealant has to be cut out first
- The total length or number of joints
- Any access equipment needed
Quantities, awkward access and phased working all shape the price. So do site requirements such as inductions and permits.
What we need to price the job
Whether it’s one area or a whole building, these details speed things up:
- What the building is and how it’s used
- Any dates the work must fit around
- Asbestos survey details if the building is older
- How the joints are reached, and at what height
A good quote starts with a clear picture: the joints involved, quantities, access and the product called for. Share whatever details you have and we’ll fill any gaps with a visit.