West Sussex · England
Fire Rated Sealant in Bosham
Intumescent and fire-rated sealant around gaps, frames and service penetrations for homeowners, landlords and businesses in Bosham. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Gaps left after a refit or conversion
- Damaged fire sealant left by other trades
- Gaps flagged on a fire risk assessment
Fire rated sealant in Bosham
Until it’s heated, intumescent sealant behaves like an ordinary sealant; in a fire it expands into the joint. Which product suits a gap depends on its width, the materials either side and what runs through it, so we follow the tested detail for each one. If you are dealing with standard silicone or caulk in a fire-stopping gap and damaged fire sealant left by other trades, we can help, whatever the surface.
Work in a small place like Bosham is planned ahead, journey included, so the job can fit around bookings, guests or opening times where possible.
You get a one-year guarantee, the same in Bosham as everywhere else we work.
- Where
- Bosham (PO18)
- Region
- West Sussex
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
DIY versus a professional finish
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
Workplaces and buildings in Bosham
For seaside hotels, guest houses and holiday lets around Bosham, 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. Bosham has hotels and guest accommodation in and around it. Hotel work can be planned room by room, with out-of-hours working where needed.
If you look after a building such as Bosham Primary School, gaps opened by contractors for new cabling are a common finding in schools and offices. Community buildings like The United Reformed Church are part of the picture too: older buildings that have had new heating or wiring often have service gaps worth checking.
Bosham is about 3 miles west of Chichester, in West Sussex. We carry out fire rated sealant for homeowners, landlords and businesses in Bosham. Bosham is one of 371 places in West Sussex we cover. There’s also a page for Portsmouth, roughly 10 miles from Bosham.
Work in PO18 works the same way as everywhere else we cover. We cover properties on High Street, Viking Way and Merryweather Road and the roads around them. If you’re just outside Bosham, we cover Broadbridge (1 mile north-east), Chidham (1 mile west), Bosham Hoe (1 mile south), Nutbourne (2 miles north-west) and Fishbourne (2 miles east). We also work in nearby towns such as Bognor Regis (8 miles east), Chichester (3 miles east), Selsey (7 miles south-east), Littlehampton (14 miles east), Emsworth (4 miles west) and Rustington (15 miles east).
Around Bosham
We work in homes and buildings around The Berkeley Arms Public House, among other places. Bosham’s nearest station is Bosham station, about 0.8 miles north-east. A little further out are Chichester Cathedral Treasury (3.2 miles east) and St Richard's Hospital (3.8 miles east). Open spaces near Bosham include Nutborne Marshes and Stoke Down.
Looking after it afterwards
How long the joints last depends on use and care. Here’s what we suggest:
- Include hidden areas like risers in routine checks
- Report cracked or damaged seals as soon as you notice them
- Ask which product was used before you paint
- Ask every contractor to reseal any fire stopping they disturb
Let contractors know where fire stopping has been done, and ask them to reseal anything they cut through. Later work is a common cause of damaged fire stopping.
Open gaps do not only matter in a fire: noise, draughts and even pests can come through too. Dealing with them early helps with all of these.
Different surfaces, different methods
Flats and HMOs
Working in occupied flats needs some planning. Access to flats and common areas is agreed in advance to keep disruption down.
Masonry and concrete
Core-drilled and broken-out holes in concrete are often irregular. We check the gap size around the service to make sure it suits the product.
Leave it or put it right?
Squirting in whichever sealant is nearest does not make a fire seal. A fire-rated product only performs as tested when it’s installed to its tested detail, which is why we match the product and the method to each gap. Older cottages and farmhouses around Bosham 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: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
Why choose Mr Mastic in Bosham
- ARBOMaster approved applicator
- Full insurance on every job
- Tidy, careful work
- Quality sealants from Arbo and Everbuild
What affects the cost of fire rated sealant
Your quote is based on your job. We look at:
- How much old sealant there is and how hard it is to remove
- Which sealant suits the joint
- Whether there’s mould to deal with
- The number of rooms or windows
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs, along with when we can work on site. Call for a quick quote and we will explain what it covers.
What to tell us for a quote
What to tell us when you ask for a quote:
- Any access issues, like height or stairs
- Where the job is, and your postcode
- A few pictures by email, if you can
- The problem you’ve noticed
We quote each job on its own. Just phone 0345 464 0079 or email us with the details, and pictures are welcome.
Towns and villages near Bosham
Also in Bosham
When to call us in Bosham
Sometimes the wrong product was used from the start: ordinary expanding foam, standard silicone or decorators’ caulk where a fire-rated seal was needed. It looks sealed, but it isn’t fire-rated.
The most common problems we see are:
- Gaps filled with a product that isn’t fire-rated
- Gaps where walls meet ceilings or slabs
- Sealant items on a fire risk assessment action list
- New service routes left unsealed after building work
If you let a flat or house near Bosham station, fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through.
Questions to ask before booking
- What guarantee comes with the work
- Whether they’re fully insured
- Whether VAT is included
- Whether you can choose the colour
Your questions about fire rated sealant in Bosham
Do you cover smaller places like Bosham?
Yes, Bosham is covered. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Do you work for hotels and guest houses in Bosham?
Yes. Hotel and guest-house work is part of what we do. Work can be planned room by room, and out-of-hours working can be arranged.
Where are you based?
We work from Crawley. Our applicators cover Bosham, along with the rest of our area.
Do you have insurance?
Yes. We are fully insured for domestic and commercial work.
Do you offer different sealant colours?
We will suggest a colour to suit the surroundings, from white and clear to greys and other shades. The choice depends on the product the joint needs.
Is there a guarantee?
Yes. All our work carries our one-year guarantee.
Can I use normal mastic around a pipe through a fire wall?
No. Where a fire-rated seal is needed, it has to be a product tested for that use.
Should I try DIY first?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs.
How it works
Once we are on site, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. After that, the work takes anything from a few hours to several days, depending on how many gaps there are. In a small place like Bosham, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We start with the survey or action list, checking the size and surfaces of every gap.
- Old or unsuitable sealant is cut out and the gap cleaned.
- Backing or fill is fitted where the product’s tested detail calls for it.
- The sealant goes in to the depth its detail sets, then it’s tooled off.
- We record the locations and products used for your records.
Before we arrive
- Let us know about parking restrictions
- Tell us about any previous sealing or DIY attempts
- Mention any leaks or damp you’ve noticed
Getting a quote
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we will explain what’s involved.