Hampshire · England
North Stoneham Fire Rated Sealant
Intumescent and fire-rated sealant around gaps, frames and service penetrations in North Stoneham, with a one-year guarantee on every job. Call for a quick quote.
- Joints picked up in a fire-stopping survey
- Gaps left after a refit or conversion
- Fire seals that have cracked with movement
Fire rated sealant in North Stoneham
Bigger jobs can be worked through in stages, flat by flat or floor by floor, noting the locations and products as we go. That record is useful for your files and for whoever looks at the building next. We work on service penetrations, pipe & cable gaps and flats & HMOs, and common reasons people get in touch are fire stopping disturbed by later work and gaps around pipes and cables through fire-resisting walls.
Somewhere as small as North Stoneham, commercial jobs tend to be pubs, holiday lets, farm buildings or halls rather than offices. They all have washrooms, kitchens and service openings that need the right sealant.
The work is covered for a year after we finish. If anything isn’t right with it, call 0345 464 0079 or email us.
- Place
- North Stoneham (SO50)
- Region
- Hampshire
- Cover
- A year, on every job
- Quotes
- A clear price before work begins
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Should I try it myself first?
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
What happens if it’s left?
Fire-rated sealants are less forgiving than ordinary ones. How it’s installed changes how it performs, and we work to the product details every time. Older cottages and farmhouses around North Stoneham can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
What you get with us
- Sanitary silicone with an anti-fungal additive in wet areas
- Trusted Arbo and Everbuild sealants
- We’re fully insured
- 12-month guarantee on every job
Read our cost guide or our reviews.
Fire rated sealant in North Stoneham: local notes
Workplaces and the common parts of blocks of flats in England need a fire risk assessment under the Regulatory Reform (Fire Safety) Order 2005, 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.
For landlords with property near Southampton Airport Parkway station, new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant. Schools such as Nightingale Primary School are buildings too, and service openings in fire-resisting walls need checking after any refurbishment.
North Stoneham is about 2 miles south-west of Eastleigh, in Hampshire. From the centre of North Stoneham to the outskirts, fire rated sealant is available for homes and businesses alike. North Stoneham is one of 683 towns and villages in Hampshire we cover for fire rated sealant.
Postcode districts we cover here for fire rated sealant: SO50. You will find streets such as Turnor Way and Stoneham Lane, all of which we cover. We also cover the places around North Stoneham: Swaythling (1 mile south), Bassett Green (1 mile south), Mansbridge (1 mile south-east), Eastleigh (2 miles north-east) and Boyatt Wood (2 miles north-east). Further out, we also cover Winchester (8 miles north), Gosport (14 miles south-east), Fareham (11 miles south-east), Totton (6 miles south-west), Hedge End (4 miles south-east) and Romsey (5 miles north-west).
Near you in North Stoneham
Locally, jobs take us to homes and businesses close to Saint George Catholic Voluntary Aided College Southampton, Saint George Catholic Voluntary Aided College Southampton and The Fleming Arms Public House and the streets around them. The closest station to North Stoneham is Southampton Airport Parkway station, roughly 0.8 miles south-east. Well-known places in the area include Princess Anne Hospital (2.7 miles south-west) and Eastleigh Museum (1.5 miles north-east). For a walk, there’s Flexford Nature Reserve.
Places near North Stoneham
Other services in North Stoneham
How to look after the new joints
After the cure time, these simple habits help:
- Keep general-purpose foam and caulk away from fire-stopping gaps
- Get damaged fire seals looked at promptly
- Check risers, ceiling voids and cupboards during building checks
- Ask which product was used before you paint
Any fire seal that’s cut or drilled needs resealing to its tested detail. If you need new services through a sealed wall, plan the fire stopping as part of the job.
A gap left open in a fire-resisting wall or floor lets smoke spread in ways the building wasn’t designed for. Sealing it early is a simple step to take.
When something else is needed
Honest advice matters more to us than a booking, so here’s what sealant cannot fix:
- Deciding what fire stopping a building needs
- Large holes that need a different fire-stopping system
- Issuing a fire rating or certificate for a building
If you’re not sure, just ring 0345 464 0079 or drop us an email and we will give you a straight answer.
Surfaces we seal
- Service penetrations
- Pipe & cable gaps
- Linear gaps
- Door frames
- Plasterboard & masonry
- Flats & HMOs
Different surfaces, different methods
Masonry and concrete
Brick, block and concrete walls and floors are sealed with products tested in masonry. The gap is cleaned of dust first so the seal has something sound to bond to.
Linear gaps
Long, narrow gaps appear where walls meet slabs and ceilings. They’re sealed with a fire-rated sealant over backing where the detail calls for it.
Common questions in North Stoneham
Do you cover smaller places like North Stoneham?
Yes. North Stoneham is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you work for landlords with property near Southampton Airport Parkway station?
Yes. We work for landlords and agents as well as householders. You can ring 0345 464 0079 or send us an email with the details for a clear quote.
Is it OK to seal over old sealant?
No. The old sealant always comes out first.
Do I have to be there?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
Can you tell me which gaps need fire stopping?
No, assessment isn’t something we do. When your assessor or designer has set out what’s needed, we’ll quote for the sealant work on it.
Are you fully insured?
Yes. Mr Mastic is fully insured, and we’ve been doing sealant work for more than 20 years.
What fire rating will the seal have?
We don’t certify fire stopping or quote ratings. Our part is installing the specified product to its tested details and list the locations and products for you.
What sealant do you use?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We will tell you what we are using and why.
How it works
The work is kept neat and contained to the joints we are treating. The job normally takes anything from a few hours to several days, depending on how many gaps there are, and we explain the cure time before we leave. Somewhere as small as North Stoneham, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- 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 faces cleaned.
- The specified fire-rated sealant goes in over any backing its detail requires.
- Every location is recorded with the product used for your records.
How to prepare
- Let us know about stairs, lifts or work at height
- Mention any sign-in or site rules at work premises
- Clear the area around the work
Get a quote
Asking for a quote is easy: let us know the job and the location. Photos by email help us understand the job, and we’ll take it from there.
Advice
Signs you need fire rated sealant in North Stoneham
Door frames are a common weak spot. The architrave hides the gap between frame and wall, so it’s easy to leave unsealed when doors are changed.
Most people get in touch after spotting something like this:
- Cracked or shrunken fire-rated sealant
- Door frames with gaps between frame and wall
- Gaps filled with a product that is not fire-rated
- Seals cut through by electricians, plumbers or data installers
If you look after a church, hall or community building such as St. Nicolas' Church, older buildings that have had new heating or wiring often have service gaps worth checking.
Comparing quotes
- Whether they’re fully insured
- Whether the sealant suits the joint
- Is the old sealant removed completely?
- When the joint can take water or movement