Fire-rated sealing and fire stopping in Cumnor, Oxfordshire
We carry out fire-rated and intumescent sealing of service penetrations and linear gaps in Cumnor. Send details for a fixed quote.
- Unsealed joints where partitions meet the slab
- Openings found when ceilings come down for a refit
- Builders’ foam or ordinary silicone in compartment walls
Fire stopping near Cumnor
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
About our fire stopping in Cumnor
We are commercial sealant applicators, CHAS accredited and a Constructionline member, with CSCS-carded applicators on site. We hold no third-party fire-stopping installer certificate, and we won’t pretend otherwise. 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 small duct penetrations where the tested detail allows, cable penetrations and linear gaps at wall heads, and the usual reasons a site gets in touch are fire sealant pulled out of the opening and damaged fire seals in risers and voids. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in Cumnor, preparation and product choice get the time they need.
Smaller places such as Cumnor still have buildings with fire-resisting walls and floors: schools, halls, care homes and commercial conversions. Any service penetration through those walls should be closed with the specified product, set out as its test evidence shows.
The 12-month guarantee covers our workmanship: preparation, application and finish. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.
- Where
- Cumnor (OX2)
- Region
- Oxfordshire
- Guarantee
- A 12-month guarantee
- Quotes
- A fixed quote before we start
- Call
- 01277 525 020
- Updated
- 3 November 2026
How a job runs
Working in a building that stays open takes some planning. We sign and contain the area we’re in, keep walkways clear and work section by section so the rest of the building stays in use. If others near Cumnor need work, visits can be combined. A fixed quote is given before anything starts.
- First we go through the drawings, schedule or specification for the seals and raise any questions before we price.
- Every penetration is compared with its detail: wall or floor type, service, gap size and depth.
- 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.
- Fire-rated or intumescent sealant is gunned in to the specified depth, then tooled.
- Openings that need a collar, wrap, batt or other product are flagged to you rather than filled with sealant.
Before we start on site
- Agree which areas must stay open
- Flag any permit to work we’ll need
- Explain the parking and delivery arrangements
Getting a fixed quote
We quote a fixed sum against the scope you give us, so the cost is agreed before work starts. To ask for one, speak to us on 01277 525 020 or send photos by email.
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Questions about Cumnor
How does the move away from BS 476 affect penetration seals in Cumnor?
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.
Could you schedule work at a campus like Azad University in Oxford for the vacation?
Yes, holiday working periods are the norm on campus jobs. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.
What happens if old sealant might contain asbestos?
Some older mastics, especially in pre-2000 buildings, can contain asbestos. We check the asbestos register before cutting out old sealant in an older building, and if asbestos is suspected, work stops until it’s tested. Removing asbestos is a job for asbestos specialists, not us.
Can you fit around our working hours?
Give us your site hours and any access windows in your enquiry, and we’ll schedule the work to suit. Our office runs Monday to Friday, 8am until 5pm.
Can you follow the specification on our project?
Yes. Include it with the drawings when you ask for a quote, and the quote will be based on it, flagging anything that needs clarifying.
Can staff carry on working while you are here?
Typically, yes. Phased work can be planned so areas stay in use, with each area protected and signed.
Do you take on small jobs?
We quote for single jobs as well as large packages and programmes. Send details for a fixed quote.
Maintenance after handover
Your facilities or cleaning team can help the joints last. Pass these on to them:
- Flag new cables with no seal around them
- Don’t let anyone top up a fire seal with the wrong product
- Put resealing into every M&E and fit-out package
- Keep product data and details in the fire safety file
Once the seals are in, tell other trades they exist and must not be disturbed. If a seal has to be opened for a new service, it should be reinstated to the same detail, by someone who knows the system.
Looking at service areas on a regular cycle pays off. A cracked or disturbed seal found early is a small job; found late, it can be one of many.
What sets the cost
To price the job, we consider:
- How much there is to seal
- Specialist products, such as fire-rated or hygienic sealants
- Backing rod, priming and other preparation
- Distance, for remote addresses
There’s no price list, because the scope varies so much from one building to the next. For a fixed figure, call for a quote and we will price your job on its own details.
Before you send an enquiry
A good diagnosis starts with the right details. Tell us:
- Whether the building will be occupied during the work
- Your programme or deadline
- Whether an asbestos survey exists
- The product your specification calls for
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.
When something else is needed
Not every problem is a sealant problem, and we’d rather tell you before you spend money. These need a different solution:
- Fire doors, dampers or other fire safety equipment
- Writing the fire-stopping specification
- Openings that need collars, wraps, batts or boards rather than sealant
If you’re not sure, just speak to us on 01277 525 020 or send photos by email and we’ll give you a straight answer.
Where we work in Cumnor
- Pipe penetrations
- Joints between fire-resisting walls and floors
- Small duct penetrations where the tested detail allows
- Cable penetrations
- Service gaps in risers
- Linear gaps at wall heads
Nearby places to Cumnor
Also in Cumnor
Fire-rated sealing for Cumnor buildings
There are four care or nursing homes within about 2 miles of Cumnor. Care homes rely on fire-resisting walls and floors, and maintenance work that breaks through them leaves openings to seal. We install fire-rated sealant to the tested detail where it is specified. For England, the fire stopping of penetrations is dealt with in Approved Document B. From 2 September 2029, BS 476 references are being taken out of Approved Document B, leaving BS EN 13501-2 classification as the route, subject to the Government’s transitional arrangements. Either way, we install the specified product to its tested detail.
Hospital estates such as Radcliffe Infirmary, 3.6 miles to the north-east of Cumnor, are divided into fire compartments, and any service penetration through them should be sealed to the specified, tested detail. Offices at parks like Wootton Business Park, 1.7 miles to the south of Cumnor, are re-cabled with each new tenant, and compartment walls need sealing afterwards to the tested detail. For a building such as Church of St Michael, new heating or data runs are the usual reason penetrations need sealing.
Cumnor is about 4 miles north-west of Abingdon-on-Thames, in Oxfordshire. If you are looking for fire stopping in Cumnor, we can help, as we do across Oxfordshire. We work across 423 places in Oxfordshire, from busy centres to rural villages.
Work on service penetrations is covered throughout OX2, for business premises of every kind. We cover commercial and managed buildings on High Street, The Park and The Winnyards. Close to Cumnor, our area also takes in Chawley (1 mile north-east), Filchampstead (1 mile north-west), Henwood (1 mile south-east), Dean Court (2 miles north-east) and Botley (2 miles north-east). A short drive away, we cover Oxford (5 miles east), Didcot (9 miles south-east), Bicester (14 miles north-east), Abingdon-on-Thames (4 miles south-east), Witney (8 miles north-west) and Carterton (11 miles west).
Around Cumnor
We work on buildings around The Vine Inn and Matthew Arnold School, among other places. The nearest railway station is Oxford station, about 3.1 miles north-east. Well-known places in the area include Westgate Shopping Centre (3.3 miles north-east) and Radcliffe Infirmary (3.6 miles north-east). For a walk, there’s Lashford Lane Fen and Cumnor Hill.
Work for main contractors and building owners
Blocks and communal areas make up much of the work for housing associations and agents. We phase the work so people keep access, with each stage agreed with your site contact.
As a CHAS accredited contractor and Constructionline member, we make supplier vetting simple. Our insurance certificate can be sent along with the quote.
What the job involves on each surface
Drylining partitions
Holes in board are often cut larger than needed. If the gap exceeds the tested range, sealant alone won’t do.
Small ducts
Small ductwork can sometimes be sealed with sealant where the tested detail includes it. Larger or fire-rated ductwork usually needs a different solution set by the designer.