Oxfordshire · England
Fire-rated sealant in Blackthorn, Oxfordshire
Intumescent and fire-rated sealant around gaps, frames and service penetrations for homeowners, landlords and businesses in Blackthorn. Fully insured, ARBOMaster approved and guaranteed for a year.
- Seals cut through by electricians, plumbers or data installers
- Fire seals that have cracked with movement
- Gaps around pipes and cables through fire-resisting walls
Landlord and commercial work in Blackthorn
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. Several properties can go on one quote.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Fire rated sealant in Blackthorn, done properly
Fire stopping only performs as intended if it’s done to the detail: the right depth, the right backing and the right product for the substrate. That’s the part we focus on. We work on linear gaps, flats & HMOs and plasterboard & masonry, and people most often call us about unsealed gaps where pipes and cables go through a wall and door frames with gaps between frame and wall.
For a small place like Blackthorn, the journey and timings are agreed in advance, so the job can fit around bookings, guests or opening times where possible.
Every job comes with a one-year guarantee, wherever you are in Oxfordshire.
- Where
- Blackthorn (OX25)
- Region
- Oxfordshire
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
What affects the cost of fire rated sealant
The price is agreed before any work begins. It takes into account:
- Mould in or behind the old joints
- Access and height
- Whether old sealant or filler has to be cut out
- The size of the job
Doing several joints on one visit generally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We will give you a clear price for the lot.
Asking for a quote
What to tell us when you ask for a quote:
- The rough size of the job
- Any previous sealing or DIY work
- Pictures of the joints, sent by email
- If it’s domestic, commercial or a hotel
There’s no standard price list, as no two jobs are quite the same. Instead, we give you a clear price for your job. To get started, ring 0345 464 0079 or email us.
Blackthorn: your questions answered
Can you do fire rated sealant in Blackthorn?
Yes. Our work covers London and the South East, and Blackthorn is part of that. Just ring 0345 464 0079 or send us an email with a few details of the job, and we will send you a clear quote.
Do you work for landlords with property near Bicester Village station?
Yes. We work for landlords and agents as well as householders, and several properties can be quoted together. You can phone 0345 464 0079 or email us with the details for a clear quote.
What do you need from me for a quote?
A short description and the location. If we need more, we’ll ask.
Do you work in flats, HMOs and commercial buildings?
Yes. Occupied flats, HMOs, offices and schools are all fine. Out-of-hours work can be arranged.
What do you put in the joint?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We explain the product when we quote.
Is it messy?
We keep the work tidy. Nearby surfaces are protected, and we clear up when we are done.
How long does fire rated sealant take?
Most jobs take anything from a few hours to several days, depending on how many gaps there are. Your quote will say how long we expect yours to take.
Do you provide details of the products used?
Yes. When the job is done, we give you the locations and products. If you need photos or a set layout, ask when you get a quote.
Different surfaces, different methods
Door frames
Behind most architraves is a gap between frame and wall. We seal any open gap to the product’s tested details so the architrave can be refitted.
Flats and HMOs
Working in occupied flats needs some planning. Access to flats and common areas is agreed in advance.
When to call us in Blackthorn
Over time, buildings change layout and use. Conversions to flats and HMOs, and office refits, create new walls and new routes for services, with gaps to match.
If you can see any of these, it’s time to have the joints looked at:
- Gaps where walls meet ceilings or slabs
- Fire stopping disturbed by later work
- Holes left by a change of layout
- Door frames with gaps between frame and wall
If you look after a church, hall or community building such as Church of St Mary the Virgin, service openings in its walls need the right fire-rated sealant, as in any building.
Before booking anyone
- Whether you can choose the colour
- How much experience the applicator has
- Are they insured?
- How hidden problems are handled
What we can’t put right
We will always be straight with you, so here’s what new sealant won’t do:
- Big openings where sealant alone isn’t the tested solution
- Fire risk assessments, which need a qualified assessor
- Certifying a building or signing off its fire safety
If in doubt, call 0345 464 0079 or drop us an email and we will say what we think.
Where we work in Blackthorn
- Service penetrations
- Flats & HMOs
- Linear gaps
- Pipe & cable gaps
- Plasterboard & masonry
- Door frames
Nearby places to Blackthorn
More services for Blackthorn
How it works
Once we’re on site, we check the joints match what you told us. If anything is different, we explain it before carrying on. After that, the work takes anything from a few hours to several days, depending on how many gaps there are. Somewhere like Blackthorn needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We begin by agreeing the list of gaps from your assessor’s or designer’s requirements.
- Each gap is measured and its substrate and service noted.
- Unsuitable material such as ordinary foam or silicone is cut out.
- The specified fire-rated sealant goes in over any backing its detail requires.
- We hand over a list of locations and products for your files.
Before we arrive
- Mention if the joints have been sealed before
- Move anything stored near the joints
- For business premises, tell us about site rules or sign-in
Getting a quote
For a quick quote, get us on the phone, or email us if that’s easier. Tell us about the joints that need doing and we’ll explain what’s involved and give you a clear quote.
Read more
Leave it or put it right?
An unsealed gap lets smoke and fire get round a wall that was built to hold them back. Sealing it properly restores what the wall was there to do, and the work involved is often modest. Where a wall is exposed, as many are in small places like Blackthorn, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs, plus any working-time requirements on site. Ask us for a quote and we will go through it with you.
Why choose Mr Mastic in Blackthorn
- Anti-fungal silicone where joints get wet
- Tidy, careful work
- More than 20 years in sealant work
- We are fully insured
What fire rated sealant looks like in Blackthorn
In England, the Regulatory Reform (Fire Safety) Order 2005 requires a fire risk assessment for workplaces and for the common parts of blocks of flats, and gaps around services are often picked up there. We apply fire-rated sealant to the assessor’s or designer’s specification and the product’s tested details.
Letting a property close to Bicester Village station? Then fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through. Schools such as Five Acres Primary School are buildings too, and fire-stopping around service openings should be restored whenever new services go in.
Blackthorn is about 3 miles south-east of Bicester, in Oxfordshire. Every kind of property in Blackthorn is covered for fire rated sealant. The work is guaranteed for a year. Blackthorn is one of 443 places in Oxfordshire where we work. For nearby work, see our Oxford page, about 10 miles away.
Work in OX25 is quoted and booked the same way as anywhere else. If you need fire rated sealant at a property on Station Road, Lower Road and Thame Road or a nearby road, our applicators can take on the job. Other places close to Blackthorn 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 out, we also cover 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).
Landmarks near Blackthorn
Blackthorn’s nearest station is Bicester Village station, about 2.6 miles north-west. Nearby you’ll also find Bicester Community Hospital (3.1 miles north-west) and Bicester Village (2.8 miles north-west). Not far away are Upper Ray Meadows and Graven Hill.