Stonymarsh fire stopping
Fire-rated and intumescent sealing of service penetrations and linear gaps in Stonymarsh and across Hampshire. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Openings left by services added after handover
- Head-of-wall gaps with no fire seal
- Non-fire-rated filler around services
Need fire stopping in Stonymarsh?
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Diagnose, treat, sign off
We schedule the visit to fit the site hours and access windows you give us. While we’re working, the area stays contained and tidy, and we check in with your contact before moving on to each new area. If others near Stonymarsh need work, visits can be combined, which keeps travel down. A fixed quote is given before anything starts.
- The specification and schedule come first, so we know which details apply.
- Access, permits and the order of areas are agreed with the site team.
- We compare every service penetration with its tested detail before sealing.
- Foam, ordinary sealant and debris come out first.
- Backing and fire-rated sealant are installed to the detail and tooled.
- Anything outside the detail is reported to you rather than sealed.
Getting the site ready
- Agree which areas must stay open
- Warn occupants and staff about the work
- Share your working hours and any access restrictions
Quotes
For a fixed quote, ring 01277 525 020 or send details through our quote form with the site address and an outline of the work. You can also send details through our quote form.
Related advice
About our fire stopping in Stonymarsh
Opened ceilings and riser doors often reveal service openings nobody sealed. Where the walls and floors already have a fire-stopping specification, we can work to it, matching the product and detail it names. Where there isn’t one, the designer or fire engineer needs to set one first. We work on small duct penetrations where the tested detail allows, joints between fire-resisting walls and floors and service gaps in risers, and what we are called in for most is old intumescent sealant that has split away and head-of-wall gaps with no fire seal. For commercial sealant work in Stonymarsh, you deal with one contact from quote to sign-off, for single jobs and planned programmes alike.
A job near Stonymarsh is normally planned around one visit, so send the specification and photographs first. Design and sign-off belong to the designer or building control; we install what’s specified.
Every job ends the same way: guaranteed. You get a 12-month guarantee on our workmanship, and we explain exactly what that covers when we quote.
- Location
- Stonymarsh (SO51)
- Region
- Hampshire
- Guarantee
- A 12-month guarantee
- Quotes
- Quoted before any work starts
- Phone
- 01277 525 020
- Updated
- 3 November 2026
Compartments and services around Stonymarsh
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. Stonymarsh lies roughly 69 miles out from central London. Business park offices in the commuter belt are refitted as tenants change, and each fit-out adds services through compartment walls.
For a unit at a site such as Yokesford Hill Industrial Estate (2.2 miles south-east of Stonymarsh), new power or data runs between office and warehouse can breach a compartment wall. Halls and meeting rooms at places like Church of St Andrew sometimes gain new services, and any compartment wall crossed needs the specified seal.
Stonymarsh is about 4 miles north-west of Romsey, in Hampshire. Our applicators travel to Stonymarsh for work on service penetrations. Our Hampshire coverage takes in 723 places. There’s a separate page for Southampton, roughly 10 miles from Stonymarsh.
Commercial sites across SO51 are covered for service penetrations. Just outside Stonymarsh, we also work in Mottisfont (1 mile west), Michelmersh (1 mile south-east), Kimbridge (1 mile south-west), Dunbridge (1 mile south-west) and Timsbury (1 mile south-east). Nearby towns on our patch include Winchester (9 miles east), Eastleigh (9 miles south-east), Andover (12 miles north), Totton (8 miles south), Chandler's Ford (7 miles south-east) and Hedge End (13 miles south-east).
Landmarks near Stonymarsh
In Stonymarsh, that means premises near The Bear And Ragged Staff Public House. Stonymarsh’s nearest station is Mottisfont & Dunbridge station, about 1.1 miles west. Well-known places in the area include Romsey Community Hospital (3.7 miles south-east) and King Johns House (3.5 miles south). The countryside around Stonymarsh includes Emer Bog and Baddesley Common.
Work for main contractors and building owners
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.
CHAS accredited and a Constructionline member, we’re straightforward to vet for your supplier list. We’re fully insured, and our insurance certificate can go with the quote.
What we can’t put right
A proper diagnosis includes knowing what sealant can’t do. We’ll tell you if the real problem is one of these:
- Plastic pipes whose detail calls for a collar or wrap
- Walls or floors that aren’t fire-resisting to begin with
- Writing the fire-stopping specification
If in doubt, give us a call on 01277 525 020 or send photos by email and we’ll say what we think.
Surfaces we seal
- Service gaps in risers
- Small duct penetrations where the tested detail allows
- Cable penetrations
- Linear gaps at wall heads
- Pipe penetrations
- Joints between fire-resisting walls and floors
General trades versus a specialist
For most general trades, sealant is a sideline. A specialist prepares properly, controls joint depth and picks a product with the right movement class.
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.
Common problems we fix in Stonymarsh
Damage plays a part too. Maintenance work can knock a seal, cut it back for an extra cable or remove it with an old pipe and the opening isn’t always resealed.
Clients typically get in touch after noticing something like this:
- Seals that don’t match their tested detail
- Head-of-wall gaps with no fire seal
- Fire-stopping items raised at inspection or handover
- Builders’ foam or ordinary silicone in compartment walls
At a healthcare site like Romsey Community Hospital, which lies south-east of Stonymarsh, new services through compartment walls are a constant, and each needs the specified seal.
Questions to ask before you book
- Are they CHAS accredited or on Constructionline?
- How they’ll work around occupants
- Is depth set with backing rod, or bond-breaker tape in shallow joints?
- Will CSCS-carded applicators be on site?
Towns and villages near Stonymarsh
Other services in Stonymarsh
Aftercare for building managers
Problems stay small when the joints are checked regularly. Specifically:
- Settle who seals which penetrations at the start of a project
- Include service cupboards in routine inspections
- Keep product data and details in the fire safety file
- Get seals inspected before ceilings and boxing close
Give the sealant its full cure time before ceilings, boxing or decoration go over it. Some fire-rated sealants accept paint and some don’t.
The simplest way to keep compartment walls intact is to plan fire stopping into every job that crosses them. That way the opening is sealed while the trade and access are still there.
Questions about Stonymarsh
How does the removal of BS 476 from Approved Document B affect fire-rated sealing in Stonymarsh?
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.
Can you work at a site such as Yokesford Hill Industrial Estate, by Stonymarsh?
Yes. Estates, retail parks and business parks around Stonymarsh, Yokesford Hill Industrial Estate among them, are all within reach. Photos and a short description are enough for a first look.
Will your applicators have CSCS cards?
Yes. We use CSCS-carded applicators.
Does weather matter for sealant work?
It can, for external work. Sealant won’t bond properly to a wet or frosty joint, so external work may be moved if conditions aren’t right. Internal work is far less affected.
Can you follow the specification on our project?
Yes. Include it with the drawings when you ask for a quote, and we’ll price the work to it, flagging anything that needs clarifying.
When can you be on site?
The office is staffed Monday to Friday, from 8am until 5pm. Let us know your site hours and access windows, and the work will be planned around them.
Do you take on small jobs?
Whatever the size, the process is the same: details, then a fixed price, then sealing, then a 12-month guarantee.