Blackthorn fire stopping
Work needed on a service penetration in Blackthorn? We assess it, carry out the work and guarantee our workmanship for 12 months.
- Openings found when ceilings come down for a refit
- Improvised or mixed-product fire seals
- Openings left by services added after handover
Fire stopping for businesses in Blackthorn
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
After the work
To get the most from the new sealant:
- Ask the designer to confirm details early on refits
- Leave fire sealant to cure fully before covering it
- Don’t let anyone top up a fire seal with the wrong product
- Put resealing into every M&E and fit-out package
After every round of M&E works, check that the openings created have been sealed. A short check at the end of each job saves a long hunt later.
Make reporting new openings part of every permit to work in service areas. Small habits like this stop openings building up.
How we handle fire stopping in Blackthorn
On a fit-out or refurbishment, we follow the services contractors floor by floor. We work from your penetration schedule or marked-up drawings. Tell us what records you need and we’ll confirm with the quote. The enquiries we see most involve service penetrations left open after M&E works and fire seals cut back for extra cables and never reinstated, on cable penetrations, joints between fire-resisting walls and floors and service gaps in risers. Facilities teams, main contractors and managing agents in Blackthorn tend to want the same three things: a clear scope, tidy work and joints that don’t fail again.
Rural conversions around Blackthorn can put new fire-resisting partitions inside older structures. Where a pipe or cable passes through a fire-resisting wall, the seal must match the tested detail: product, substrate, gap and depth.
We stand behind the joints we seal: 12 months, guaranteed. It covers how we prepared and applied the sealant, and if something we did falls short, we return to it.
- Where
- Blackthorn (OX25)
- Region
- Oxfordshire
- Guarantee
- 12 months on our workmanship
- Price
- Quoted before any work starts
- Telephone
- 01277 525 020
- Updated
- 3 November 2026
Fire-rated sealing for Blackthorn buildings
Approved Document B is the English guidance that covers fire stopping around 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. We install whatever has been specified, to the product’s tested detail. At about 50 miles from central London, Blackthorn is within reach of the capital. 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.
Halls and meeting rooms at places like Church of St Mary the Virgin sometimes gain new services, and any compartment wall crossed needs the specified seal. Hospital estates such as Bicester Community Hospital, 3.1 miles north-west of Blackthorn, are divided into fire compartments, and any service penetration through them should be sealed to the specified, tested detail.
Blackthorn is about 3 miles south-east of Bicester, in Oxfordshire. If you’re looking for fire stopping in Blackthorn, we can help. Blackthorn is one of 423 places in Oxfordshire on our list. For work in that direction, see our Oxford page.
Anyone looking for fire stopping in OX25 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. Among the streets we cover are Station Road, Lower Road and Thame Road. Nearby places we also cover include Piddington (2 miles south-east), Ludgershall (3 miles south-east), Grendon Underwood (4 miles east), Edgcott (4 miles north-east) and Brill (4 miles south-east). Further afield, our area takes in Oxford (10 miles south-west), Bicester (3 miles north-west), Thame (10 miles south-east), Kidlington (9 miles south-west), Chinnor (14 miles south-east) and Headington Quarry (9 miles south-west).
What’s near Blackthorn
Blackthorn’s nearest station is Bicester Village station, about 2.6 miles north-west of the centre. Other landmarks nearby include Bicester Community Hospital (3.1 miles north-west) and Bicester Village (2.8 miles north-west). For a walk, there’s Upper Ray Meadows and Graven Hill.
Honest limits
A few problems need another trade or a different fix, and we say so rather than covering them up:
- Writing the fire-stopping specification
- Construction that lacks the fire resistance the seal relies on
- Approving the work on behalf of building control
Not sure which it is? You can call the office on 01277 525 020 or email drawings and photos and we will tell you honestly.
Where we work in Blackthorn
- Pipe penetrations
- Service gaps in risers
- Cable penetrations
- Linear gaps at wall heads
- Small duct penetrations where the tested detail allows
- Joints between fire-resisting walls and floors
Also near Blackthorn
What else we do in Blackthorn
Cost factors for service penetrations
Quotes vary with the job. It mainly depends on:
- Distance, for remote addresses
- Specialist products, such as fire-rated or hygienic sealants
- Site requirements such as inductions and permits
- How accessible the joints are
The product called for affects the cost, and so does the preparation. Access, phasing and site requirements come into it too.
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
- Your programme or deadline
- A wide shot and a close-up of the area
- Approximate linear metres or a joint schedule
Specifications, drawings and tender packages are welcome with any enquiry, and we will price against exactly what is specified. Smaller jobs need nothing more than photos and a few notes.
Do you need fire stopping in Blackthorn?
A common fault is a product that was never fire-rated in the first place: expanding foam or a general-purpose sealant pushed into a gap to tidy it. It may look closed, but it has no tested fire performance in that position, so it has to come out.
It’s worth sending us details if you spot any of the following:
- Unsealed joints where partitions meet the slab
- Penetration schedules that need working through
- Fire sealant pulled out of the opening
- Unsealed openings around new pipes and cables
In a school such as Five Acres Primary School, fire-rated sealant goes in around service penetrations where it is specified.
Comparing quotes
- Is the sealant right for the movement and the substrate?
- Is depth set with backing rod, or bond-breaker tape in shallow joints?
- How they handle RAMS and site documents
- Their plan for phasing and protecting the area
What the job involves on each surface
Drylining partitions
Service holes through plasterboard are frequently oversized or ragged. 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. Bigger ducts and fire-resisting ductwork are normally handled with other products and we flag that rather than guess.
On site: what to expect
A typical day starts with protection: masking tape along the joint edges and sheeting over anything nearby. On site, the work usually takes anything from one day to a planned run of visits, depending on the number of seals and the access, and our waste is bagged and taken away as we go. Jobs in and around smaller places like Blackthorn are usually planned as a single visit, so we ask for photos and rough sizes first. Then the right materials arrive with us.
- 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.
- Where the detail needs backing, it goes in at the stated depth.
- Fire-rated or intumescent sealant goes in around the services and is tooled off.
- We walk the completed areas with you and confirm the records agreed at quote stage.
Getting the site ready
- Move anything stored against the joints
- Point out any areas we must not close
- Send your site hours and access windows
Quotes
Need a figure for a tender or a budget? We’ll quote against your scope and drawings that you can work with. If you have questions first, give us a call on 01277 525 020 or send details through our quote form.
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Questions we’re asked in Blackthorn
How does the removal of BS 476 from Approved Document B affect fire-rated sealing in Blackthorn?
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. Whichever applies, we install the specified product to its tested detail; the specification is for the designer to set.
Does your area include sites such as Talisman Business Centre, near Blackthorn?
Yes. We cover Blackthorn and the area around it, including industrial estates, business parks and retail parks such as Talisman Business Centre. To start, just phone 01277 525 020 or email us with the unit, the joints involved and your access times.
What’s the quickest route to a quote?
The quote form is the simplest route, though you can also call the office on 01277 525 020 or send photos by email. Photos, drawings or a joint schedule help us quote quickly.
How long does a typical visit take?
The duration is planned around your programme and the access we’re given. We will give you an estimate of time on site when we quote.
Are you CHAS accredited and on Constructionline?
Yes. We are CHAS accredited and a Constructionline member, which helps with supplier vetting.
Can staff carry on working while you’re here?
Yes, with some planning. Tell us your site hours and access windows and we will plan around them.
How long will the new sealant last?
Nobody can honestly give a figure in years, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular inspection is the best way to catch problems early.