Isle of Wight · England
Fire-rated sealant in Great Thorness, Isle of Wight
Professional fire rated sealant in and around Great Thorness, with every bit of old sealant taken out first.
- Open joints along the top of partitions
- Joints picked up in a fire-stopping survey
- Old fire sealant that has split or come away
What affects the quote in Great Thorness
We don’t publish a price list. The quote depends on:
- How many areas need sealing
- The size of the job
- How easy the joints are to reach
- Whether there’s mould to deal with
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
Asking for a quote
Before you ask for a quote, have a think about:
- What the problem is, such as mould, gaps, leaks or cracking
- Where the job is, and your postcode
- If someone has resealed it before
- A few photos by email, if you can
Call for a quick quote, or email us if that’s easier. Tell us about the joints that need doing and we’ll explain what’s involved.
About our fire rated sealant in Great Thorness
Fire stopping only performs as intended if it’s done to the detail: correct depth, correct backing and a product suited to the surfaces. That detail is what we take care over, gap by gap. Typical jobs include gaps flagged on a fire risk assessment and gaps around pipes and cables through fire-resisting walls, across linear gaps, service penetrations and plasterboard & masonry.
Somewhere as small as Great Thorness, commercial jobs tend to be pubs, holiday lets, farm buildings or halls rather than offices. Each still needs sound sealant in its washrooms and kitchens, and fire-rated joints where services pass through walls.
All our work is covered by our 12-month guarantee.
- Location
- Great Thorness (PO31)
- Wider area
- Isle of Wight
- Guarantee
- A year, on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What the job involves on each surface
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.
Plasterboard walls
Service holes in plasterboard are often rough and oversized. Where a hole is bigger than the sealant’s tested range, it needs another approach.
When to call us in Great Thorness
Buildings are refitted and reconfigured over the years. Conversions to flats and HMOs, and office refits, create new walls and new routes for services, with gaps to match.
These are the problems we’re asked about most:
- Door frames with gaps between frame and wall
- Fire stopping disturbed by later work
- Ordinary sealant used where a fire-rated product was needed
- Gaps left after a refit or conversion
Whether the job is in Great Thorness itself or nearby, the right material for each joint matters as much as a neat finish.
Before you book anyone
- The length of the guarantee
- Whether all the old sealant comes out first
- How long to leave it before use
- What happens if they find a problem under the old sealant
Fire rated sealant in Great Thorness: local notes
For seaside hotels, guest houses and holiday lets around Great Thorness, busy months put washrooms and kitchens under pressure, so it’s worth checking the sealant before the busiest weeks. 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.
Around Great Thorness, as everywhere, fire rated sealant is only as good as the preparation behind it.
Great Thorness is about 3 miles south-west of Cowes, in the Isle of Wight. From the centre of Great Thorness to the outskirts, fire rated sealant is available for homes and businesses alike. Our the Isle of Wight coverage runs to 125 places, and Great Thorness is one of them. You can also see our page for Southampton, roughly 13 miles from Great Thorness.
Every address in PO31 is covered for fire rated sealant. If you are just outside Great Thorness, we cover Porchfield (1 mile south-west), Locksgreen (1 mile south-west), Rew Street (2 miles north-east), Newtown (2 miles south-west) and Northwood (2 miles north-east). Within a short drive, we also cover Newport (3 miles south-east), Ryde (9 miles east), Cowes (3 miles north-east), Sandown (10 miles south-east), Shanklin (10 miles south-east) and Ventnor (11 miles south-east). For island and remote addresses, the job takes a little more planning, so mention it when you ask for a quote.
Around Great Thorness
Locally, jobs take us to homes and businesses close to Sportsman's Rest pub, among other places. Other landmarks nearby include Carisbrooke Castle (3.5 miles south-east) and St Mary's Hospital (2.8 miles south-east). Green spaces nearby include Mill Hill.
How the visit works
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. Typically it takes from a few hours to a few days, depending on the number of gaps and the access, and the area is left clean. Somewhere like Great Thorness needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- We begin by agreeing the list of gaps from your assessor’s or designer’s requirements.
- Each gap is measured and its substrate and service noted.
- Unsuitable material such as ordinary foam or silicone is cut out.
- We fit backing where needed and apply the fire-rated sealant to depth.
- We hand over a list of locations and products for your files.
Getting ready for the visit
- Tell us about any water getting in
- Mention any tricky access
- Mention any parking rules near the property
Get a quote
We quote each job on its own. Just call 0345 464 0079 or send us an email with the details.
Related advice
Can I do it myself?
A DIY attempt does not rule out a professional job. We remove it and do the joint properly.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.
Aftercare tips
Joint life depends on how it’s used and looked after. We suggest:
- Look in service cupboards and ceiling voids from time to time
- Ask every contractor to reseal any fire stopping they disturb
- Flag any open gap you spot round a pipe or cable
- Photograph sealed gaps before they’re covered up
Any fire seal that is cut or drilled needs resealing to its tested detail. New services through a sealed wall should include fire stopping in the plan.
Any job that breaks through a wall or ceiling should include resealing. Doing it at the time avoids leaving gaps behind.
Nearby places to Great Thorness
Other services in Great Thorness
Common questions in Great Thorness
Do you cover smaller places like Great Thorness?
Yes, Great Thorness is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you cover Great Thorness for fire rated sealant?
Yes. We work across London and the South East, and Great Thorness is part of that. You can call 0345 464 0079 or drop us an email and let us know what needs doing, and we’ll give you a clear price.
Where are you based?
Mr Mastic is based in Crawley. Our applicators cover Great Thorness.
Can I choose the sealant colour?
Yes. Sealants come in white, clear, grey and other colours, and we agree the colour with you before any work starts.
How do I get a quote for fire rated sealant in Great Thorness?
It depends on the job, so we quote each one individually. For a quick quote, ring 0345 464 0079 or send us an email with a short description of the job.
Is intumescent sealant the same as fire-rated sealant?
Fire-rated sealant covers any sealant tested for use in fire stopping. Intumescent types expand when heated, and they’re one option among several. We use whichever the specification and tested details call for.
Can you tell me which gaps need fire stopping?
No. We follow the requirements from your assessor, designer or building control, and apply each product to its tested details.
Can you give us a record of the work?
Yes. You get a list of where we worked and what we used.
When something else is needed
A few problems are outside what sealant work can do:
- Walls or floors that weren’t built to resist fire
- Assessing a building’s fire safety
- Big openings where sealant alone is not the tested solution
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we will tell you honestly.
Surfaces we seal
- Plasterboard & masonry
- Flats & HMOs
- Service penetrations
- Pipe & cable gaps
- Door frames
- Linear gaps