Hampshire · England
Fire Rated Sealant in Winnall
Intumescent and fire-rated sealant around gaps, frames and service penetrations for homeowners, landlords and businesses in Winnall. Fully insured, ARBOMaster approved and guaranteed for a year.
- Damaged fire sealant left by other trades
- Standard silicone or caulk in a fire-stopping gap
- New service routes left unsealed after building work
Fire rated sealant for homes and businesses in Winnall
Until it’s heated, intumescent sealant behaves like an ordinary sealant; then it swells to help close the gap. The right product depends on the gap size, the substrate and what passes through, so we follow the tested detail for each one. Common call-outs are for gaps around pipes and cables through fire-resisting walls and standard silicone or caulk in a fire-stopping gap, across plasterboard & masonry, pipe & cable gaps and service penetrations.
Community buildings, schools and small businesses around places like Winnall have washrooms and kitchens that see a lot of use. Sealant and fire-rated joints there matter as much as in any larger building.
Each job carries a 12-month guarantee.
- Location
- Winnall (SO23, SO21, SO20)
- Wider area
- Hampshire
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Looking after it afterwards
Once the sealant has cured, a few habits help it last:
- Flag any open gap you spot round a pipe or cable
- Plan fire stopping into any work that goes through walls or floors
- Keep the record of products and locations with your fire safety documents
- Take pictures of fire stopping before ceilings or boxing go back
Follow the cure time we give you before decorating over the sealant. Not every fire-rated sealant takes paint.
Open gaps do not only matter in a fire: they also let noise, draughts and sometimes pests through. Sealing them early helps on every front.
Leave it or put it right?
Waiting for the next refit can leave a gap open for years. On its own, sealing it now is a small job that does not depend on other work. In an older home around Winnall, damp from a failed joint can get into timber and plaster, which is far harder to put right than the sealant itself.
Homes and businesses are quoted the same way: the amount of work, the access and the products needed. Ask us for a quote and we will go through it with you.
Why choose Mr Mastic in Winnall
- Homes, businesses and hotels
- ARBOMaster approved applicator
- Anti-fungal silicone where joints get wet
- Neat joints and a tidy finish
Read what affects the cost or customer reviews.
How the job changes by surface
Door frames
Our work is the joint between frame and wall. Doors, seals and closers are for a door specialist.
Linear gaps
Some linear gaps have to cope with movement as well as fire. The product and depth are chosen to suit both, following the tested detail.
What affects the quote in Winnall
The price is agreed before any work begins. It’s based on:
- Any working-time requirements on site
- How many rooms, windows or areas are involved
- The type of sealant required
- How much old sealant there is and how hard it is to remove
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- What’s wrong with the joints now
- Photos by email, if that’s easy
- Any access issues, like height or stairs
- The type of property
There’s no standard price list. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or drop us an email.
What fire rated sealant looks like in Winnall
There are hotels and other places to stay in and around Winnall. For hotels, a room-by-room programme keeps most rooms in use while the work goes on. 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 apply fire-rated sealant to the assessor’s or designer’s specification and the product’s tested details.
Rented homes near Winchester station change hands often, and any gap left by new services in shared walls should be closed with a fire-rated product. Schools such as Winnall Primary School are buildings too, and gaps opened by contractors for new cabling are a common finding in schools and offices. For buildings such as Church of St John the Baptist, older buildings that have had new heating or wiring often have service gaps worth checking.
Winnall is about 1 mile north-east of Winchester, in Hampshire. Homes, rented property, offices and hotels in Winnall is covered for fire rated sealant. The work is guaranteed for a year. Winnall is one of 683 places in Hampshire where we work. We also work in Southampton, about 11 miles from Winnall.
Postcode districts we cover here for fire rated sealant: SO23, SO21 and SO20. Fire rated sealant is available to properties on Moss Road, Water Lane and Imber Road and the roads around them. Winnall sits on or near the M3, which makes travel easy. We also cover Kings Worthy (2 miles north), Easton (2 miles north-east), Abbots Worthy (2 miles north), Temple Valley (2 miles east) and Morestead (3 miles south-east). Within a short drive, we also cover Eastleigh (7 miles south), Fareham (15 miles south), Andover (13 miles north-west), Totton (14 miles south-west), Chandler's Ford (7 miles south-west) and Alton (15 miles north-east).
Near you in Winnall
Typical jobs here are in homes near Leigh House Hospital, The Golden Lion pub and St. Cross Park. The closest station to Winnall is Winchester station, about 1 mile west. Well-known places in the area include Winchester City Museum (0.8 miles west) and Wolvesey Castle (0.7 miles south-west). Not far away are Winnall Moors and Twyford Down.
FAQs for Winnall
I let a flat near Winchester station. Can you help?
Yes. We work for landlords and letting agents as well as homeowners, and several properties can go on one quote. Just phone 0345 464 0079 or email us with the address and what needs doing, and we will send you a clear quote.
Is Winnall within the area you cover?
Yes, Winnall is covered. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Will we have a record of what was sealed?
Yes. Locations and products are written up when we finish. Tell us if your assessor needs it in a particular format.
Can I do it myself?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
What do you put in the joint?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
How long will you be here?
That depends on the amount of work, but as a guide it takes anything from a few hours to several days, depending on how many gaps there are. We’ll tell you when we quote.
Where do you work from?
We are based in Crawley, and we cover South East England, London and all of Scotland.
Is standard sealant good enough for a fire gap?
No. Standard sealants are not made or tested to stop fire. If it’s been used, we remove it and use the right product.
Can I do it myself?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Work for landlords, hotels and businesses
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
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.
The process
Good joint work is mostly preparation, so that’s where we spend the time. Joints are cleaned back and dried before anything new goes in. All told, the work takes from a few hours to a few days, depending on the number of gaps and the access. Parking around Winnall is normally easier than in a town centre, but mention any lanes, gates or long drives. If the job is outside, tell us about side access and how high the joints are.
- We plan the order of work and access, floor by floor or flat by flat.
- We take out any damaged or unsuitable sealant.
- Dust and loose debris are cleaned from each gap.
- 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
- Try not to wet indoor joints just before the visit
- Plan for the work area to be out of bounds to pets and children
- Mention any leaks or damp you’ve noticed
Ask for a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. When it suits you, phone 0345 464 0079 or email us.