Fire stopping in Northmoor
Fire-rated and intumescent sealing of service penetrations and linear gaps across Northmoor, by CSCS-carded applicators. CHAS accredited and fully insured.
- Penetration schedules that need working through
- Service penetrations left open after M&E works
- Expanding foam used as fire stopping
Need fire stopping in Northmoor?
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Fire stopping in Northmoor, done properly
Our applicators are CSCS-carded, and we are CHAS accredited and a Constructionline member. We hold no third-party fire-stopping installer certificate. 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, joints between fire-resisting walls and floors and linear gaps at wall heads, and the failures we are asked to look at most are penetration schedules that need working through and fire stopping installed outside its tested range. Looking for mastic applicators who cover Northmoor? We have been sealing commercial buildings since 2005.
Smaller places such as Northmoor 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.
Our 12-month guarantee is about workmanship, not wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we are clear about what is covered before work starts.
- Location
- Northmoor (OX29)
- Wider area
- Oxfordshire
- Cover
- 12 months on our workmanship
- Quote
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Updated
- 3 November 2026
Your questions answered
Can work at a site such as Azad University in Oxford fit around teaching?
Yes. Education sites typically want the work in vacations or in phases during term, and we plan to suit. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.
Is Northmoor off your patch?
Not at all. Northmoor is within our area. London and every South East county are within our area. Good photos up front let us bring everything on the first visit.
How do I request a quote?
You can use the quote form on this site; alternatively, ring 01277 525 020 or send photos by email. Photos, drawings or a joint schedule help us quote quickly.
Do you approve fire stopping for building control?
No. Sign-off belongs to the designer or building control, not the installer. We’ll confirm the products and details used, and you can tell us what other records you need at quote stage.
Is it fine to apply new sealant on top of old?
No. Overlaying old sealant is a frequent cause of early failure, so it all comes out first.
What if there’s asbestos in the old mastic?
Some older mastics, especially in pre-2000 buildings, can contain asbestos. Before we disturb old sealant in an older building, we ask to see the asbestos register or survey, and work stops until any suspect material has been tested. We don’t remove asbestos-containing materials.
When is resealing likely to be due?
There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Sealant joints are maintenance items, so inspect them regularly.
Where services cross fire walls in Northmoor
Central London is about 58 miles from Northmoor. Business park offices in the commuter belt are refitted as tenants change, and each fit-out adds services through compartment walls. 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. Our part stays the same: the specified product, installed to its tested detail.
Wherever services are added at a hospital such as Abingdon Community Hospital, 5.4 miles south-east of Northmoor, the compartment line has to be made good with the specified product. Where a unit on an estate such as Lakeside Industrial Estate (1.7 miles north-west of Northmoor), has fire-resisting walls between offices and warehouse, any new service through them should be sealed to the tested detail.
Northmoor is about 6 miles north-west of Abingdon-on-Thames, in Oxfordshire. Anywhere in OX29, the process is the same: details in, fixed quote out, then sealing and a 12-month guarantee. 423 places across Oxfordshire fall within our area, Northmoor among them. There’s a separate page for Oxford, about 7 miles away.
Anyone looking for fire stopping in OX29 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. If your site is on Chapel Lane and Bints Place or close by, we can quote for service penetrations. Just outside Northmoor, we also work in Appleton (2 miles south-east), Sutton (2 miles north), Cumnor (3 miles east), Filchampstead (3 miles north-east) and Farmoor (3 miles north-east). Further afield, our area takes in Oxford (7 miles east), Didcot (10 miles south-east), Abingdon-on-Thames (6 miles south-east), Witney (6 miles north-west), Carterton (9 miles west) and Wantage (9 miles south).
Near you in Northmoor
Around Northmoor, our work takes us to commercial buildings near The Red Lion Public House. A little further out are Abingdon Community Hospital (5.4 miles south-east) and Hinton Waldrist Castle (3.7 miles south-west). Open spaces near Northmoor include Hitchcopse Pit and Cumnor Hill.
Why act early in Northmoor
An open or wrongly sealed service penetration lets fire and smoke reach the next compartment much sooner than the building was designed for. While the openings can be reached, sealing them is normally straightforward. Wait until ceilings close or areas are occupied and the same work becomes harder to reach. Older rural buildings around Northmoor move with the seasons, and rigid or tired sealant can’t keep up. A sealant with the right movement capability, correctly sized, lasts far better.
Every site prices differently: joint size, product, access and site hours all play a part. A fixed quote follows once we understand the job.
Why clients in Northmoor choose us
- Clear, fixed quotes
- CSCS-carded applicators
- Over 20 years of commercial sealing
- One phone line for London, the South East and Scotland
Read what affects the cost and how we’re accredited.
How a job runs
Diagnose, treat, sign off: every visit follows that pattern. First comes an inspection and agreement on scope, then we prepare and seal each joint with the specified product, and we finish with a walk round so the work can be signed off. Smaller jobs around Northmoor can be grouped with others nearby. A fixed quote is given before anything starts.
- First we confirm the product and tested details named in the specification.
- Openings are measured and grouped by detail.
- Old or wrong materials are cut out.
- Mineral wool or other backing is fitted where required.
- We gun the sealant in to the specified depth around each service and tool it.
- We walk the completed areas with you and confirm the records agreed at quote stage.
What we need from you
- Have the specification and drawings to hand
- Share the asbestos register for older buildings
- Warn occupants and staff about the work
Getting a fixed quote
Photos, drawings or a schedule of the joints and a fixed quote comes back to you. If the job needs a look first, we will arrange a site visit.
Read more
When something else is needed
Sealant solves a lot, but not everything, and we are upfront when that’s the case. It won’t fix:
- Large openings beyond what any sealant detail covers
- Reviewing a building’s overall fire safety
- Approving the work on behalf of building control
If you are not sure, just call 01277 525 020 or email drawings and photos and we’ll give you a straight answer.
Where we work in Northmoor
- Cable penetrations
- Pipe penetrations
- Linear gaps at wall heads
- Joints between fire-resisting walls and floors
- Service gaps in risers
- Small duct penetrations where the tested detail allows
Nearby places to Northmoor
Also in Northmoor
Surface by surface
Linear joints
Head-of-wall joints often have to absorb slab deflection. We use the product and backing the detail names for that movement, with no gaps along the run.
Masonry and concrete
Block walls and concrete floors are common substrates for penetration seals. Dust and debris are cleared from the opening, with backing added if the detail requires it.
Signs you need fire stopping in Northmoor
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.
If one of these sounds familiar, it’s time for a closer look:
- Old intumescent sealant that has split away
- Expanding foam used as fire stopping
- Unsealed penetrations discovered above suspended ceilings
- Fire stopping installed outside its tested range
In a building such as Church of St Denys, any service penetration through a fire-resisting wall should be sealed to the specified detail.
Comparing quotes
- Whether primer will be used where the manufacturer specifies it
- The terms of the workmanship guarantee
- Their pre-qualification and accreditations
- How the existing material will be dealt with
Owners, agents and contractors
Blocks and communal areas make up much of the work for housing associations and agents. We phase the work so people keep access, and each stage is agreed with your contact.
Building owners and managing agents use us on everything from one building to a spread of sites. One quote can cover more than one site, which keeps the paperwork simple.