Hampshire · England
Fire-rated sealant in Hook, Hampshire
We cover Hook for 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
- Door frames with gaps between frame and wall
- New service routes left unsealed after building work
Fire rated sealant in Hook
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. We check the size and the substrate before choosing the product, then apply it to the depth its tested detail calls for. We work on plasterboard & masonry, door frames and pipe & cable gaps, and the jobs we see most are open gaps behind door architraves and damaged fire sealant left by other trades.
Somewhere as small as Hook, 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.
You get a one-year guarantee, the same in Hook as everywhere else we work.
- Where
- Hook (SO31, PO14)
- Region
- Hampshire
- Cover
- One year on every job
- Price
- A clear price before work begins
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Can I do it myself?
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
Nearby places to Hook
Other services in Hook
Fire rated sealant in Hook: local notes
For seaside hotels, guest houses and holiday lets around Hook, heavy use in the busy months is hard on washroom and kitchen sealant, and any building work there should leave fire-rated joints made good. 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.
Community buildings like Church of St Mary are part of the picture too: older buildings that have had new heating or wiring often have service gaps worth checking. Letting a property close to Swanwick station? Then new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant. For site and facilities teams at buildings such as Locks Heath Infant School, service openings in fire-resisting walls need checking after any refurbishment.
Hook is about 1 mile south-east of Warsash, in Hampshire. From the centre of Hook to the outskirts, fire rated sealant is available for homes and businesses alike, from flats and houses to offices and hotels. We cover 683 towns and villages across Hampshire. There’s also a page for Southampton, roughly 7 miles from Hook.
Our applicators cover all of SO31 and PO14 for fire rated sealant. We also cover Abshot (1 mile east), Hook Park Estate (1 mile south-west), Titchfield Common (1 mile north-east), Warsash (1 mile north-west) and Locks Heath (1 mile north). We also work in nearby towns such as Winchester (15 miles north), Gosport (6 miles south-east), Havant (13 miles east), Eastleigh (9 miles north), Fareham (4 miles east) and Horndean (12 miles east).
Local landmarks in Hook
Typical jobs here are in homes near Hamble Common, Jolly Farmer Public House and Brookfield Community School and Language College and the streets around them. The nearest railway station is Swanwick station, about 2.2 miles north. Nearby you’ll also find St Andrew's Castle (1.8 miles west) and Carron Row Farm Museum (2.2 miles north-east). Not far away are Holly Hill Woodland Park.
Why deal with it now?
If an assessor has flagged gaps, it makes sense to close them before the next review. Getting them done and written up gives you evidence that the item was dealt with. Around Hook, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why choose Mr Mastic in Hook
- 180+ five-star Google reviews
- One-year guarantee on every job
- Neat joints and a tidy finish
- Anti-fungal sanitary silicone in wet areas
Read what affects the cost or customer reviews.
Aftercare tips
After the cure time, these simple habits help:
- Take photos of fire stopping before ceilings or boxing go back
- Do not paint over fire sealant until it has cured
- Get damaged fire seals looked at promptly
- Keep general-purpose foam and caulk away from fire-stopping gaps
Include fire stopping in your regular building checks. Watch for cracking, gaps or seals that have been disturbed and have them put right.
Any job that breaks through a wall or ceiling should include resealing. Catching it then saves a separate visit later.
How we quote for fire rated sealant
For a quick quote, just ask. The main things that affect it are:
- Whether there’s mould to deal with
- The size of the job
- How easy the joints are to reach
- How much old sealant there is and how hard it is to remove
Combining jobs into one visit is generally more efficient than separate visits, so it’s worth mentioning everything you’d like done. We’ll give you a clear quote for the lot.
What to tell us for a quote
What to tell us when you ask for a quote:
- How many joints, rooms or windows are involved
- The address or postcode of the job
- If it’s domestic, commercial or a hotel
- Any previous sealing or DIY work
For a quote, ring 0345 464 0079 or email us and tell us where the job is and what the problem looks like. You’ll have a clear quote before we start.
For landlords and businesses
For anyone letting property in or around Hook, jobs at different addresses can go on one quote. Send us the addresses and the work at each, and pictures by email help.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can be quoted together.
Surface by surface
Service penetrations
Wherever a service goes through a fire-resisting wall or floor, there’s a gap around it. The sealant is chosen for what passes through and how wide the gap is.
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.
Hook: your questions answered
Do you cover smaller places like Hook?
Yes, we do. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
I let a flat near Swanwick station. Can you help?
Yes. We work for landlords and agents as well as homeowners, and several properties can be quoted together. You can ring 0345 464 0079 or email us with the details for a clear quote.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done and you will get one quote.
Do you remove the old sealant?
Yes, always, and completely. New sealant won’t bond properly to old, so any old material comes out before anything new goes in.
Is there a guarantee?
Yes, for a year. If there’s a problem with our work in that time, tell us and we will put it right.
What does intumescent mean?
Fire-rated is the broad term for sealants tested for fire stopping. Intumescent ones swell in heat, and they’re one option among several. The specification and the tested detail decide which is used.
Where do you work from?
We are a Crawley-based firm. We work across South East England, London and Scotland.
Do you work in flats, HMOs and commercial buildings?
Yes. Flats, HMOs, offices, schools and other occupied buildings are all part of our work. The order of work and access are planned with you.
What happens on the day
At the end, we look at the finished work together. The visit itself normally takes anything from a few hours to several days, depending on how many gaps there are, depending on the size of the job. Somewhere like Hook 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 start with the survey or action list, checking the size and surfaces of every gap.
- Anything that isn’t fit for the job comes out, and the gap is cleaned.
- Where the tested detail needs backing or fill, we fit it.
- Fire-rated or intumescent sealant is applied to the right depth and tooled.
- Locations and products are noted so you have them on file.
Before we arrive
- Move anything stored near the joints
- Where the joints are inside, avoid wetting them before we arrive
- Let us know about stairs, lifts or work at height
How to get a quote
Asking for a quote is easy: let us know what needs doing and where. A few pictures by email make the job easier to understand, and we’ll take it from there.