West Sussex · England
Fire Rated Sealant in Hunston
Specialist fire rated sealant for Hunston: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- New service routes left unsealed after building work
- Linear gaps at the head of walls
- Gaps filled with a product that isn’t fire-rated
Why deal with it now?
For some gaps, sealant is not the right answer and another system is needed. Big openings, bundles of cables and plastic pipes may need batts, collars or wraps instead. If a gap is not suitable for sealant, we will tell you. Older cottages and farmhouses around Hunston can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Leaving a failed joint normally makes the job bigger, not smaller. If you are not sure whether it needs doing, ring 0345 464 0079 or email us for an honest opinion and a quote.
Why choose Mr Mastic in Hunston
- ARBOMaster approved applicator
- Homes, businesses and hotels
- We’re fully insured
- Anti-fungal silicone where joints get wet
Take a look at our cost guide or customer reviews.
About our fire rated sealant in Hunston
We can work through a building room by room or floor by floor. It gives you a list to keep with the building’s fire safety documents. We work on door frames, service penetrations and pipe & cable gaps, and common reasons people get in touch are gaps filled with a product that isn’t fire-rated and gaps around pipes and cables through fire-resisting walls.
In a village or hamlet like Hunston, commercial work is more likely to be a pub, a farm shop, holiday lets or a village hall than an office block. Each still needs sound sealant in its washrooms and kitchens, and fire-rated joints where services pass through walls.
All our work comes with our 12-month guarantee.
- Where
- Hunston (PO20)
- Wider area
- West Sussex
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Keeping the joints in good condition
No joint lasts for ever, but care makes a real difference. A few tips:
- Don’t paint over fire sealant until it has cured
- Ask every contractor to reseal any fire stopping they disturb
- Include hidden areas like risers in routine checks
- Keep pictures of seals that will be hidden
Leave the sealant to cure fully before painting near it. Some fire-rated sealants can be painted and some can’t.
An open gap isn’t only a fire issue: they also let noise, draughts and sometimes pests through. Sealing them early helps on every front.
What sealant work can’t fix
In fairness, there are a few things sealant won’t fix:
- Large holes that need a different fire-stopping system
- Sign-off of the building, which sits with building control or your assessor
- Fire doors that need new seals, closers or hardware
If you’re not sure, just ring 0345 464 0079 or send us an email and we’ll give you a straight answer.
Joints and surfaces we work on
- Linear gaps
- Door frames
- Service penetrations
- Flats & HMOs
- Pipe & cable gaps
- Plasterboard & masonry
Landlords, agents and businesses in Hunston
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. We can quote for more than one property at once.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
What happens on the day
You do not need to clear the whole room or building before we come, only the area right around the joints. Everything nearby is protected, and the work takes from a few hours to a few days, depending on the number of gaps and the access for a typical job. Somewhere as small as Hunston, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- Access to each area is agreed so the work can run in order.
- Old, damaged or unsuitable sealant is removed.
- Gaps are cleaned of dust and loose material.
- The fire-rated or intumescent sealant is applied and tooled to the tested detail.
- We record what was done and flag anything that needs a different system.
Before we arrive
- Tell us about access, such as stairs, a lift or high-level joints
- Mention any parking rules near the property
- For indoor joints, keep the area dry beforehand if you can
Get a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.
Advice
Different surfaces, different methods
Door frames
Our work is the joint between frame and wall. The door leaf, its seals and closer need a door specialist.
Plasterboard walls
Holes in plasterboard are often cut roughly for services. Gaps that are too big for sealant alone need a different detail.
Nearby places to Hunston
Also in Hunston
FAQs for Hunston
Do you work for landlords with property near Chichester station?
Yes. We work for letting agents and landlords as well as homeowners, and several properties can go on one quote. Just call 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear price.
Do you cover Hunston for fire rated sealant?
Yes. Our work covers London and the South East, and Hunston is part of that. You can ring 0345 464 0079 or email us and let us know what needs doing.
Is it worth trying it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.
How long does the job take?
That depends on how much there is to do, but most jobs take a few hours for a handful of gaps, and longer for a whole building. We will give you a better idea when we quote.
Where is Mr Mastic based?
Our base is Crawley, with over 20 years’ experience. We work across South East England, London and Scotland.
What information do you need?
Just the basics: the address or postcode, what’s wrong and any access issues. After that, simply phone 0345 464 0079 or drop us an email.
Do you certify the fire stopping?
That isn’t something we state or certify. Your specification sets the requirement, and we apply a product tested for it, recording the locations and products.
Is there any odour?
That depends on the sealant. Some products have a noticeable smell, others very little, and any smell fades as they cure.
What fire rated sealant looks like in Hunston
If you run a hotel, guest house or holiday let in a coastal place like Hunston, 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, and gaps around services are often picked up there. We work to the specification you are given, installing the product to its tested details.
Managing a site like North Mundham Primary School? Then service openings in fire-resisting walls need checking after any refurbishment. Rented homes near Chichester station change hands often, and any gap left by new services in shared walls should be closed with a fire-rated product.
Hunston is about 2 miles south of Chichester, in West Sussex. Jobs in Hunston get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Across West Sussex, we cover 371 places, and Hunston is one of them. You can also see our page for Portsmouth, roughly 13 miles from Hunston.
Here we cover the PO20 postcode area for fire rated sealant. Local streets include Heath Close, Westlands Road and St Leodegars Way, all of which we cover. We also cover the places around Hunston: Donnington (1 mile west), North Mundham (1 mile east), Runcton (1 mile east), Portfield (2 miles north) and Chichester (2 miles north). We also work in nearby towns such as Bognor Regis (4 miles east), Selsey (5 miles south), Littlehampton (11 miles east), Emsworth (8 miles west), Rustington (12 miles east) and Angmering (13 miles east).
What’s near Hunston
Typical jobs here are in homes near Chichester High School For Girls and The Spotted Cow Public House, among other places. For rail, the closest station is Chichester station, roughly 1.5 miles north. Other landmarks nearby include St Richard's Hospital (2.3 miles north) and Chichester Castle (2 miles north).
When to call us in Hunston
Door frames are a common weak spot. The architrave hides the gap between frame and wall, so it can be left open when a door is replaced.
If you can see any of these, it’s time to have the joints looked at:
- Joints picked up in a fire-stopping survey
- Unsealed gaps around fire door frames
- New service routes left unsealed after building work
- Open holes round services passing through fire walls
For buildings such as St Leodegar's Church, gaps around pipes and cables are worth checking after any building work there.
Before booking anyone
- The length of the guarantee
- Is the old sealant removed completely?
- How long to leave it before use
- What the quote includes, VAT included or not