Buckinghamshire · England
Fire-rated sealant in The City, Buckinghamshire
Our applicators work in The City on intumescent and fire-rated sealant around gaps, frames and service penetrations. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Sealant items on a fire risk assessment action list
- Open joints along the top of partitions
- Old fire sealant that has split or come away
About our fire rated sealant in The City
Deciding which gaps need fire stopping is not our role; your assessor, designer or building control sets that out. What we do is apply the right product to that specification, properly and neatly. Typical jobs include cracked or shrunken fire-rated sealant and open gaps behind door architraves, on plasterboard & masonry, door frames and flats & HMOs.
In a village or hamlet like The City, commercial work is more likely to be a pub, a farm shop, holiday lets or a village hall than an office block. They all have washrooms, kitchens and service openings that need the right sealant.
Every job is covered by our one-year guarantee.
- Location
- The City (HP14)
- Wider area
- Buckinghamshire
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
What happens if it’s left?
A quick fill with any sealant to hand is not fire stopping. Fire-rated products are tested in set gap sizes, depths and substrates, so both the product and the method matter. Older cottages and farmhouses around The City can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Doing several joints on one visit is usually more efficient than separate visits, so it’s worth mentioning everything you’d like done. We’ll send you a clear quote for the lot.
Why choose Mr Mastic in The City
- Trusted Arbo and Everbuild sealants
- Tidy, careful work
- We’re fully insured
- 180+ five-star Google reviews
Take a look at what affects the cost and our reviews.
Keeping the joints in good condition
After the cure time, these simple habits help:
- Keep the record of products and locations with your fire safety documents
- Keep pictures of seals that will be hidden
- Include hidden areas like risers in routine checks
- Tell trades working in the building that fire seals must be put back
Don’t drill through or remove a fire seal without putting it back properly. If you need new services through a sealed wall, plan the fire stopping as part of the job.
Any job that breaks through a wall or ceiling should include resealing. Catching it then saves a separate visit later.
How the visit works
We work through the job in order: protect, prepare, seal, tidy. For most jobs that takes a few hours for a handful of gaps, and longer for a whole building, and the area is left clean. Somewhere as small as The City, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- Before starting, we go through the specification or action list with you.
- Each gap is measured and its substrate and service noted.
- Any non-fire-rated filler is removed and the gap cleaned.
- We fit backing where needed and apply the fire-rated sealant to depth.
- We hand over a list of locations and products.
Preparing for the visit
- Let us know about stairs, lifts or work at height
- Where the joints are inside, avoid wetting them before we arrive
- Plan for the work area to be out of bounds to pets and children
Getting a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is.
Related advice
DIY sealant or a professional job?
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.
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
What else we do in The City
The City questions
Do you work for landlords with property near Saunderton station?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or email us and tell us about the property, and we will give you a clear price.
Do you cover The City for fire rated sealant?
Yes. We work across London and the South East, and The City is part of that. Just call 0345 464 0079 or send us an email with a few details of the job.
What information do you need?
A short description and the location, plus photos if you have them. If we need more, we’ll ask.
Can you tell me which gaps need fire stopping?
No. We follow the requirements from your assessor, designer or building control.
What sealant do you use?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
Do you take out the old sealant first?
Yes. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
Can you do several jobs on one visit?
Yes. More than one area can go on one quote.
Does someone need to be in?
It depends on the job. Inside work needs someone to give us access.
Quotes for fire rated sealant in The City
Every job gets its own quote. These are the things that affect it:
- Mould in or behind the old joints
- The number and length of the joints
- When we can work, for business premises
- The number of rooms or windows
The cost reflects the work involved, not a rough estimate. That’s why we ask about the job first.
Helping us quote
To make quoting easier, please include:
- Pictures of the joints, sent by email
- Roughly how big the job is
- If it’s domestic, commercial or a hotel
- What’s wrong with the joints now
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we will explain what’s involved before giving you a price.
For landlords and businesses
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. Several properties can be quoted together.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
Workplaces and buildings in The City
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, which is often where open fire-stopping gaps are first noticed. We work to the specification you’re given, installing the product to its tested details.
If you look after a church, hall or community building such as Church of St Paul, older buildings that have had new heating or wiring often have service gaps worth checking. Managing a site like Radnage Church of England Primary School? Then fire-stopping around service openings should be restored whenever new services go in.
The City is about 5 miles north-west of High Wycombe, in Buckinghamshire. Anywhere in HP14, our applicators can take on fire rated sealant. The City is one of 263 places in Buckinghamshire we cover. For nearby work, see our Reading page (15 miles or so).
Jobs for fire rated sealant in HP14 works the same way as everywhere else we cover. Streets in the area include Bottle Square Lane, Radnage Common Road and Green Lane, and we cover them all. Close by, we work in Waterend (1 mile west), Beacon's Bottom (1 mile south-west), Radnage (1 mile north), Bennett End (1 mile north-west) and Green End (1 mile south-east). Larger places within reach include Aylesbury (11 miles north), High Wycombe (5 miles south-east), Chesham (11 miles east), Marlow (7 miles south-east), Amersham (11 miles east) and Beaconsfield (10 miles east).
Local landmarks in The City
Locally, jobs take us to homes and businesses close to The Crown pub, among other places. The City’s nearest station is Saunderton station, about 1.8 miles north-east. Well-known places in the area include Wycombe Hospital (5 miles south-east). Open spaces near The City include Yoesden and Bald Hill.
Do you need fire rated sealant in The City?
Much fire stopping is hidden: in ceiling voids, service risers and behind boxing. Because nobody sees it, gaps go unnoticed until an assessor or surveyor looks.
The most common problems we see are:
- Linear gaps at the head of walls
- Gaps around pipes and cables through fire-resisting walls
- Sealant items on a fire risk assessment action list
- Standard silicone or caulk in a fire-stopping gap
Letting a property close to Saunderton station? Then new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant.
What to look for in a quote
- How the colour is chosen
- How the surfaces are prepared before sealing
- Whether they seal over old material or remove it
- The length of the guarantee