Fire Stopping in Four Marks
Fire stopping in Four Marks, backed by over 20 years in commercial sealing. Fully insured and CHAS accredited.
- Hidden openings found during inspections
- Fire seals cut back for extra cables and never reinstated
- Non-fire-rated filler around services
Fire stopping for businesses in Four Marks
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
How a job runs
On arrival, we sign in, go through any site induction and check how permits are handled. Floors, finishes and fittings next to the joints are covered before any cutting starts, with the work itself typically taking a single visit for a short list of penetrations, or a phased programme for a whole building. Several jobs near Four Marks can be grouped on one trip. Mention the building’s opening times and we will work within them.
- The specification and schedule come first, so we know which details apply.
- We plan the sequence of floors, risers and voids with you.
- We compare every service penetration with its tested detail before sealing.
- Unsuitable material is removed and the opening cleaned 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
- Flag any permit to work we’ll need
- Let building users know which areas are affected
- Arrange parking or a loading space
Quotes
Pricing a project or setting a maintenance budget? We will quote against your scope and drawings you can plan around. For a chat about it beforehand, ring 01277 525 020 or email the details over.
Related advice
How we handle fire stopping in Four Marks
Our applicators are CSCS-carded, and we are CHAS accredited and a Constructionline member. We don’t hold a third-party fire-stopping installer certificate and we’d rather say that up front. What we offer is careful installation of the specified sealant to its tested detail, with a 12-month guarantee on our workmanship. We work on linear gaps at wall heads, joints between fire-resisting walls and floors and pipe penetrations, and the usual reasons a site gets in touch are unsealed openings around new pipes and cables and open linear gaps along the top of fire-resisting walls. Facilities teams, main contractors and managing agents in Four Marks tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.
In places the size of Four Marks, fire-resisting walls and floors are found in schools, care homes, health centres and mixed-use buildings. Around those penetrations, fire-rated sealant is installed if specified, with depth, backing and gap all as tested.
Work we carry out in Hampshire comes with a 12-month guarantee. If an installation problem shows up, call the office on 01277 525 020 or email drawings and photos and we will arrange a return visit.
- Place
- Four Marks (GU34)
- Wider area
- Hampshire
- Guarantee
- 12 months on our workmanship
- Quotes
- Quoted before any work starts
- Phone
- 01277 525 020
- Updated
- 3 November 2026
Penetration seals near Four Marks
Four Marks is about 49 miles from central London. Offices around the capital are refitted often, and the cabling that follows can breach fire-resisting walls, and the gaps need sealing with the specified product. Fire stopping of openings and penetrations in England falls under Approved Document B. 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.
Wherever services are added at a hospital such as Alton Community Hospital, 3.3 miles north-east of Four Marks, the compartment line has to be made good with the specified product. Holiday works at schools like Four Marks Church of England Primary School often leave service openings to seal before pupils return.
Four Marks is about 4 miles south-west of Alton, in Hampshire. Any commercial site in Four Marks is covered, for single jobs and planned programmes alike. 723 places across Hampshire fall within our area, including Four Marks. Southampton is covered too, around 20 miles from Four Marks.
Work on service penetrations is covered throughout GU34. If your site is on Read's Field, River Close and Chalk Close or close by, send details and we will quote for service penetrations. Nearby places we also cover include Medstead (1 mile north), Soldridge (1 mile west), South Town (2 miles north-west), New Copse (2 miles north) and Hattingley (2 miles north-west). Bigger towns within reach include Basingstoke (11 miles north), Winchester (12 miles west), Fleet (15 miles north-east), Horndean (14 miles south), Alton (4 miles north-east) and Petersfield (9 miles south-east).
Local landmarks in Four Marks
The closest station to Four Marks is Alton station, roughly 4.6 miles north-east of the centre. Well-known places in the area include Barton Castle (3.5 miles north-west) and Alton Community Hospital (3.3 miles north-east). Open spaces near Four Marks include Red Hill.
Owners, agents and contractors
When you manage a building on behalf of an owner, clear figures and clear communication matter. You get a fixed quote, an agreed scope and a walk round at the end.
As a CHAS accredited contractor and Constructionline member, we are straightforward to vet for your supplier list. We are fully insured, and our insurance certificate can go with the quote.
Common questions from Four Marks clients
Is Four Marks too small for you to travel to?
Not at all: smaller places are covered as well as towns. We work across Greater London and the South East. Where we can, we group nearby jobs to make the most of each trip.
Can you take on a job at a hospital such as Alton Community Hospital?
Yes, healthcare and care buildings are part of our work. The estates team’s permit system and infection-control rules come first, and the work is planned around them.
Will you just go over the old sealant?
No, never. Overlaying old sealant is a frequent cause of early failure, so it all comes out first.
How do I request a quote?
The quote form is the simplest route, though you can also call 01277 525 020 or email drawings and photos. Photos, drawings or a joint schedule help us quote quickly.
Can you reseal penetrations after our M&E works?
Yes, provided a specification covers them. New services after M&E works often breach existing seals.
Can you work to our specification?
Yes. The specification and the manufacturer’s installation guidance are what we work to, and we raise anything unclear before work begins.
Which standards are fire seals tested to?
BS EN 1366-3 covers penetration seals and BS EN 1366-4 covers linear joints. Results are classified under BS EN 13501-2. The rating applies to the product as tested.
Common problems we fix in Four Marks
Mixing products or improvising a detail breaks the link with the test evidence. Gaps beyond the tested size, shallow sealant, no backing where it was needed, or products from different systems mixed together are the usual culprits.
Clients normally get in touch after noticing one or more of the following:
- Fire seals cut back for extra cables and never reinstated
- Snag lists that include open service penetrations
- Fire-rated sealant that has cracked or shrunk back
- Expanding foam used as fire stopping
For a building such as Church of the Good Shepherd, new heating or data runs are the usual reason penetrations need sealing.
Comparing quotes
- The named product and why it was chosen
- Their approach to joint depth and backing
- What the guarantee covers, and for how long
- Will RAMS and insurance details be available?
Places near Four Marks
More services for Four Marks
When it isn’t the sealant
A few problems need another trade or a different fix, and we point that out rather than sealing over them:
- Writing the fire-stopping specification
- Issuing fire ratings or certificates for seals
- Reviewing a building’s overall fire safety
If in doubt, call 01277 525 020 or use the quote form and we’ll say what we think.
Surfaces we seal
- Joints between fire-resisting walls and floors
- Linear gaps at wall heads
- Cable penetrations
- Pipe penetrations
- Service gaps in risers
- Small duct penetrations where the tested detail allows
Maintenance after handover
Once the work is signed off, a little attention goes a long way:
- Arrange inspection before areas are covered up
- Keep general-purpose fillers away from compartment walls
- Leave fire sealant to cure fully before covering it
- Report damaged or disturbed seals as soon as they’re spotted
Give the sealant its full cure time before ceilings, boxing or decoration go over it. Not every fire-rated product can be painted, so check the product data first.
Specify fire stopping early on refits, not as an afterthought. Details can then be picked to suit the actual pipes, cables and ducts, and installation follows the programme.
Quoting for work in Four Marks
A fixed quote reflects the actual work. It allows for:
- How much existing material needs removing
- The site’s rules and procedures
- Distance, for remote addresses
- 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 requirements come into it too.
Before you send an enquiry
Whether it’s one area or a whole building, these details speed things up:
- Asbestos survey details if the building is older
- What the building is and how it’s used
- The product your specification calls for
- Anything awkward about access or site hours
A handful of photos and a postcode is the fastest way to a quote. Upload them with the quote form, or give us a call on 01277 525 020 or send details through our quote form to discuss it first.