Southampton · England
Fire-rated sealant in Thornhill, Southampton
Problem with your fire-stopping gaps in Thornhill? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Standard silicone or caulk in a fire-stopping gap
- New service routes left unsealed after building work
- Fire stopping disturbed by later work
Fire rated sealant for homes and businesses in Thornhill
Deciding which gaps need fire stopping isn’t our role; your assessor, designer or building control sets that out. What we do is apply the right product to that specification, properly and neatly. Common call-outs are for open joints along the top of partitions and door frames with gaps between frame and wall, across door frames, flats & HMOs and service penetrations.
If you run a pub, café, guest house or shop in or near Thornhill, its washrooms and kitchen need the same sealant care as any big building, and fire-rated sealant around service openings should be restored after new pipes or cables go through.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we’ll put it right.
- Where
- Thornhill (SO19, SO18, SO30)
- Wider area
- Southampton
- Guarantee
- 12 months on all our work
- Price
- A clear price before we start
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
When it is not the sealant
We’d rather tell you now than do work that won’t last, so here’s what sealant cannot put right:
- Certifying a building or signing off its fire safety
- Large holes that need a different fire-stopping system
- Fire doors that need new seals, closers or hardware
If you’re not sure, just phone 0345 464 0079 or send us an email and we will give you a straight answer before you book.
What we seal
- Linear gaps
- Service penetrations
- Plasterboard & masonry
- Pipe & cable gaps
- Door frames
- Flats & HMOs
Places near Thornhill
What else we do in Thornhill
What the job involves on each surface
Plasterboard walls
Plasterboard partitions are common in flats, offices and conversions. The sealant has to be one tested in plasterboard for each gap size.
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.
Looking after it afterwards
A little care helps the new joints last. We recommend:
- Keep pictures of seals that will be hidden
- Do not fill fire-stopping gaps with ordinary foam or silicone
- Ask which product was used before you paint
- Flag any open gap you spot round a pipe or cable
Avoid covering a sealed gap with anything that isn’t part of the tested detail. If it needs repair, use the same type of product. We can tell you which product we used.
Small gaps around services are simple to deal with while there are only a few. Leave them and each new job adds another hole and the list grows.
How we quote for fire rated sealant
Every job gets its own quote. This is what makes a difference:
- Whether the work is at height
- Whether old sealant or filler has to be cut out
- The type of sealant required
- How many rooms, windows or areas are involved
The cost depends on the size of the job, how much old material has to come out and access to the work. We give a clear quote before any work starts, so you know where you stand.
What to tell us for a quote
There’s no need for technical detail. Just tell us:
- A few photos by email, if you can
- How many joints, rooms or windows are involved
- Where the property is
- What’s wrong with the joints now
Getting a quote is simple: let us know the job and the location, and roughly how big it is. A few pictures by email make the job easier to understand, and we will take it from there.
Landlord and commercial work in Thornhill
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
What happens on the day
There’s no need to move everything out before we come, only the area right around the joints. We protect the rest, and the job takes a few hours for a handful of gaps, and longer for a whole building for a typical job. For a job in Thornhill, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- 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.
- Finally, we list where we worked and what we used, for your records.
Preparing for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Clear items away from the joints we’re working on
- On commercial sites, let us know about site rules
How to get a quote
There’s no standard price list, because every job is different. Instead, we send you a clear quote for your job. To arrange one, phone 0345 464 0079 or drop us an email.
Advice
What we are called out for in Thornhill
Over time, buildings change layout and use. A house turned into flats or an HMO, or an office split into smaller units, brings new walls, new service routes and new gaps.
People usually contact us when they notice one of these:
- Gaps filled with a product that is not fire-rated
- Joints picked up in a fire-stopping survey
- Gaps left after a refit or conversion
- Open joints along the top of partitions
If you look after a church, hall or community building such as St Christopher, gaps around pipes and cables are worth checking after any building work there.
Questions to ask before booking
- How hidden problems are handled
- What the quote includes, VAT included or not
- Whether the sealant suits the joint
- What insurance they hold
Thornhill: your questions answered
Do you cover smaller places like Thornhill?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you do fire rated sealant in Thornhill?
Yes, Thornhill is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job.
Can I add another job to the visit?
Yes. More than one area can be quoted together.
Which products do you use?
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.
Do you offer different sealant colours?
In most cases you can choose. We will tell you which colours the right product comes in and agree one before we start.
What does intumescent mean?
An intumescent sealant expands when it gets hot, helping close the gap. It’s one type of fire-rated sealant; which product suits depends on the gap, the substrate and the service.
Will we have a record of what was sealed?
Yes. You get a list of where we worked and what we used to keep with your fire safety documents.
Can you tell me which gaps need fire stopping?
No. We follow the requirements from your assessor, designer or building control and install to the manufacturer’s details.
Commercial buildings in Thornhill
If you run a hotel, guest house or holiday let in a coastal place like Thornhill, 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, which is often where open fire-stopping gaps are first noticed. We work to the specification you’re given, installing the product to its tested details.
If you let a flat or house near Sholing station, new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant. Schools such as Thornhill Primary School are buildings too, and service openings in fire-resisting walls need checking after any refurbishment.
Thornhill is about 2 miles east of Southampton, in Southampton. Thornhill gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. We cover 40 towns and villages across Southampton, from the larger towns to small villages.
All of SO19, SO18 and SO30 is within our area for fire rated sealant. That includes homes and businesses on Drove Road, Barry Road and Luton Road and the roads around them. Being close to the A334, Thornhill is easy for our applicators to reach. Nearby, we also carry out fire rated sealant in Harefield (1 mile north), Sholing (1 mile south-west), Bitterne (1 mile west), West End (1 mile north) and Chartwell Green (1 mile north). We also work in nearby towns such as Shirley (4 miles west), Regents Park (4 miles west), Maybush (5 miles west), Portswood (3 miles north-west), Coxford (5 miles west) and Freemantle (4 miles west). Being one of Southampton’s larger places, Thornhill has every kind of property, from flats to offices.
Around Thornhill
We work in homes and buildings around Westwood Woodland Park, Woodlands Community College and Grove Park Business and Enterprise College, among other places. The closest station to Thornhill is Sholing station, about 1.4 miles south-west. Well-known places in the area include Moorgreen Hospital (1.4 miles north-east) and Bitterne Local History Society Heritage And Research Centre (1.1 miles west). Not far away are Netley Common.