Hampshire · England
Fire Rated Sealant in Alverstoke
Our applicators work in Alverstoke on intumescent and fire-rated sealant around gaps, frames and service penetrations. Old sealant removed completely, joints prepared properly.
- Damaged fire sealant left by other trades
- Fire seals that have cracked with movement
- Unsealed gaps where pipes and cables go through a wall
Fire rated sealant for homes and businesses in Alverstoke
A gap around a door frame, a linear joint at the head of a wall and a hole round a pipe are each sealed differently. Measuring the gap and checking what it’s made of comes first, then the sealant goes in to the depth the product’s details set. If you’re dealing with gaps left after a refit or conversion and fire stopping disturbed by later work, we can help, on plasterboard & masonry, flats & HMOs and pipe & cable gaps alike.
If you have holiday lets, a converted barn used for business or a community building near Alverstoke, the washrooms, kitchens and any fire-rated joints need the same care as a big site.
There’s a 12-month guarantee on every job, large or small.
- Location
- Alverstoke (PO12)
- Wider area
- Hampshire
- Guarantee
- One year on every job
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
What the job involves on each surface
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.
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.
DIY versus a professional finish
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, 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.
Other services in Alverstoke
When it isn’t the sealant
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- Issuing a fire rating or certificate for a building
- Assessing a building’s fire safety
- Fire doors that need new seals, closers or hardware
If in doubt, ring 0345 464 0079 or send us an email and we will say what we think.
Joints and surfaces we work on
- Pipe & cable gaps
- Flats & HMOs
- Door frames
- Service penetrations
- Linear gaps
- Plasterboard & masonry
Why it’s worth doing now in Alverstoke
Items left open on a fire risk assessment tend to come back at the next review. Having them sealed and recorded now gives you evidence that the item was dealt with. Around Alverstoke, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
Why us?
- Arbo and Everbuild products
- An ARBOMaster approved applicator
- Neat joints and a tidy finish
- Over 20 years’ experience
Read our cost guide and our reviews.
Do you need fire rated sealant in Alverstoke?
A lot of fire stopping is out of sight: in ceiling voids, service risers and behind boxing. Out of view, damage sits unnoticed until someone inspects.
It’s worth asking for a quote if you see:
- Gaps left after a refit or conversion
- Damaged fire sealant left by other trades
- Fire seals that have cracked with movement
- Gaps around pipes and cables through fire-resisting walls
Community buildings like The Little Church are part of the picture too: gaps around pipes and cables are worth checking after any building work there.
What your quote should include
- What happens if the job turns out different
- How much experience the applicator has
- How the joint is cleaned and prepared
- How long to leave it before use
Common questions in Alverstoke
Do you work in hotels near Alverstoke?
Yes, hospitality work, including hotels, is part of what we do. Jobs can be programmed room by room, with out-of-hours working possible to arrange.
I let a flat near Portsmouth Harbour station. Can you help?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we will send you a clear quote.
Do you come to Alverstoke?
Yes. We work in Alverstoke and the rest of Hampshire. To book, phone 0345 464 0079 or email us.
Will there be a smell?
There can be a smell while the sealant cures. Ventilation helps.
How do I get a quote for fire rated sealant in Alverstoke?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
What does intumescent mean?
Intumescent describes a material that swells in heat. Many fire-rated sealants work this way, but not all, and the choice depends on the gap.
Are you an approved applicator?
Yes. We hold ARBOMaster approved applicator status, and we are fully insured.
Do you provide details of the products used?
Yes. We record the locations we have sealed and the products used to keep with your fire safety documents.
How it works
Every visit runs the same way: we look at the joints together, protect the area around them, do the work and tidy away. Most jobs take from a few hours to a few days, depending on the number of gaps and the access. In a small place like Alverstoke, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Access to each area is agreed so the work can run in order.
- We take out any damaged or unsuitable sealant.
- Dust and loose debris are cleaned from each gap.
- We apply and tool the sealant to the product’s tested detail.
- We record what was done and flag anything that needs a different system.
Preparing for the visit
- Plan for the work area to be out of bounds to pets and children
- Let us know about earlier repairs to the joints
- Let us know if you’ve seen damp or leaks
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.
Advice
Commercial buildings in Alverstoke
If you run a hotel, guest house or holiday let in a coastal place like Alverstoke, busy months put washrooms and kitchens under pressure, so it’s worth checking the sealant before the busiest weeks. 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 apply fire-rated sealant to the assessor’s or designer’s specification and the product’s tested details.
If you let a flat or house near Portsmouth Harbour station, new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant. If you look after a building such as Alverstoke Community Infant School, fire-stopping around service openings should be restored whenever new services go in.
Alverstoke is about 2 miles south of Gosport, in Hampshire. We provide fire rated sealant to homeowners, landlords and businesses in Alverstoke and the surrounding area, as part of our work across Hampshire. Alverstoke is one of 683 towns and villages in Hampshire we cover.
Jobs for fire rated sealant in PO12 is quoted and booked the same way as anywhere else. Whether your property is on The Lane, Fort Road and Church Road or a nearby road, our applicators can take on the job. Neighbouring places we cover for fire rated sealant include Clayhall (1 mile east), Haslar (1 mile east), Privett (1 mile north-west), Portsmouth Point (2 miles north-east) and Portsea (2 miles north-east). Within a short drive, we also cover Havant (9 miles north-east), Fareham (5 miles north), Horndean (11 miles north-east), Hedge End (12 miles north-west), Waterlooville (9 miles north-east) and Purbrook (8 miles north-east).
Local landmarks in Alverstoke
In Alverstoke, that means homes and buildings near Bay House School and Village Home pub, among other places. The nearest railway station is Portsmouth Harbour station, about 2.1 miles north-east. Other landmarks nearby include Tricorn Centre (3 miles north-east) and Gosport War Memorial Hospital (0.9 miles north). Open spaces near Alverstoke include West of the River Alver.
For landlords and businesses
Mouldy or split sealant often shows up at the end of a tenancy. Several properties can be quoted together.
In hotels, rooms out of use cost money, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.