Oxfordshire · England
St John Street area Fire Rated Sealant
Fire rated sealant for St John Street area and the surrounding area: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Gaps flagged on a fire risk assessment
- New service routes left unsealed after building work
- Unsealed gaps around fire door frames
Fire rated sealant for St John Street area homes and businesses
DIY versus a professional finish
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
Fire rated sealant in St John Street area, done properly
Door frame gaps, linear joints and holes around services all have their own details. We check the size and the substrate before choosing the product, then apply it to the depth its tested detail calls for. Typical jobs include standard silicone or caulk in a fire-stopping gap and fire seals that have cracked with movement, across plasterboard & masonry, door frames and service penetrations.
Community buildings, schools and small businesses around places like St John Street area have washrooms and kitchens that see a lot of use. Their sealant and fire-rated joints are as important as those in any bigger building.
The work is covered for a year after we finish. If anything isn’t right with it, call 0345 464 0079 or email us.
- Where
- St John Street area (OX1, OX2)
- Wider area
- Oxfordshire
- Guarantee
- 12 months on all our work
- Price
- A clear price before work begins
- Call
- 0345 464 0079
- Updated
- 26 October 2026
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. Most jobs then take a few hours for a handful of gaps, and longer for a whole building. In a smaller place like St John Street area, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.
- We plan the order of work and access, floor by floor or flat by flat.
- We take out any damaged or unsuitable sealant.
- Gaps are cleaned of dust and loose material.
- We apply and tool the sealant to the product’s tested detail.
- Locations and products are written up and any gaps unsuitable for sealant are flagged.
How to prepare
- Let us know if you’ve seen damp or leaks
- Mention any tricky access
- Tell us about any previous sealing or DIY attempts
Ask for a quote
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll talk you through the work before giving you a price.
Read more
Commercial buildings in St John Street area
Workplaces and the common parts of blocks of flats in England need a fire risk assessment under the Regulatory Reform (Fire Safety) Order 2005, 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. There are hotels and other places to stay in and around St John Street area. For hotels, a room-by-room programme keeps most rooms in use while the work goes on.
If you look after a church, hall or community building such as Pusey House Chapel, older buildings that have had new heating or wiring often have service gaps worth checking. For site and facilities teams at buildings such as The Eckersley School of English, fire-stopping around service openings should be restored whenever new services go in.
St John Street area is about 1 mile west of Oxford, in Oxfordshire. From the centre of St John Street area to the outskirts, we cover fire rated sealant for every kind of property, from flats and houses to offices and hotels. 443 places in Oxfordshire are on our list, large and small.
All of OX1 and OX2 is within our area for fire rated sealant. Streets in the area include New Road, Shoe Lane and Love Lane, all of which we cover. You will find St John Street area on the A420 and A4144, so it’s easy for us to get to. We also cover St. Ebbes (1 mile south), Jericho (1 mile north-west), Osney (1 mile south-west), Walton Manor (1 mile north) and Norham Manor (1 mile north). Within a short drive, we also cover Didcot (10 miles south), Bicester (11 miles north-east), Abingdon-on-Thames (6 miles south), Witney (10 miles west), Carterton (14 miles west) and Thame (12 miles east).
Local landmarks in St John Street area
In St John Street area, that means homes and buildings near St Barnabas' Church of England Aided Primary School, Oxford University Parks and The Eagle and Child pub and the streets around them. You will also find Angus Library and Archive (under half a mile north-east) and Oxford Academy (1.3 miles north). There’s a railway station in St John Street area itself: Oxford station. Nearby you will also find Oxford University Press Museum (within half a mile north-west) and Oxford Castle (under half a mile south). Open spaces near St John Street area include Hook Meadow and The Trap Grounds and Headington Hill.
Also near St John Street area
What else we do in St John Street area
Different surfaces, different methods
Flats and HMOs
Conversions generally leave a mix of old and new service holes. We seal the ones on your specification with a tested product and record where they are.
Service penetrations
Pipes, cables and ducts passing through fire-resisting walls and floors each leave a gap. We seal it with a product tested for that service and gap size.
What happens if it’s left?
Paying for fire stopping that has to be redone is a false economy. Work that does not follow the tested detail may have to come out again once someone inspects it. In a smaller place like St John Street area, wherever a wall is exposed, a failed outside joint is a real source of damp. Indoors, a failed seal lets water into floors and panels as it would anywhere.
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference.
Why us?
- Sanitary silicone with an anti-fungal additive in wet areas
- More than 20 years in sealant work
- Neat joints and a tidy finish
- Approved under the ARBOMaster scheme
See how sealant jobs are priced and our reviews.
Common problems we fix in St John Street area
Gaps around door frames are easily missed. The architrave hides the gap between frame and wall, so it can be left open when a door is replaced.
The most common problems we see are:
- Gaps where walls meet ceilings or slabs
- Unsealed gaps around fire door frames
- Fire seals that have cracked with movement
- Joints picked up in a fire-stopping survey
If you let a flat or house near Oxford station, fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through.
Questions to ask before you book
- Is the old sealant removed completely?
- Are they insured?
- When the joint can take water or movement
- How much experience the applicator has
FAQs for St John Street area
Do you work in hotels near St John Street area?
Yes, we work for hotels as well as homes and businesses. Rooms can be done a few at a time, so the building stays open.
Can you help a landlord with a rental near Oxford station?
Yes, we work for landlords and agents. You can ring 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before work begins.
Which products do you use?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We’ll tell you what we’re using and why.
Are you insured?
Yes. Mr Mastic is fully insured.
Can you give us a record of the work?
Yes. Locations and products are written up when we finish. Tell us if your assessor needs it in a particular format.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done and you’ll get one quote.
How much does fire rated sealant cost in St John Street area?
Size, access and the old material all affect the cost. Call for a quick quote.
Will you leave a mess?
No. We work neatly, protect the area around the joints and tidy up afterwards.
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Look in service cupboards and ceiling voids from time to time
- Ask which product was used before you paint
- Take photos of fire stopping before ceilings or boxing go back
- File the fire-stopping record where your assessor can find it
Follow the cure time we give you before decorating over the sealant. Not every fire-rated sealant takes paint, so ask us which we used.
Leave a fire-stopping gap open and smoke can move through the building much more easily. Closing it is generally a straightforward job.
When it is not the sealant
We won’t take on work that won’t last, so these are the limits:
- Openings too large for sealant, which need batts, boards or another system
- Doors that are not fire doors in the first place
- Walls or floors that weren’t built to resist fire
If you are not sure, just call 0345 464 0079 or drop us an email and we’ll give you a straight answer.
What we seal
- Plasterboard & masonry
- Service penetrations
- Flats & HMOs
- Linear gaps
- Door frames
- Pipe & cable gaps