Hampshire · England
Southwood Fire Rated Sealant
Fire rated sealant for Southwood, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Gaps where walls meet ceilings or slabs
- Joints picked up in a fire-stopping survey
- Open gaps behind door architraves
What sealant work cannot fix
Some problems need a builder, plumber or other trade rather than us:
- Issuing a fire rating or certificate for a building
- Problems with the door itself rather than the gap around the frame
- Large holes that need a different fire-stopping system
If you’re not sure, just phone 0345 464 0079 or email us and we’ll give you a straight answer.
Where we work in Southwood
- Plasterboard & masonry
- Service penetrations
- Flats & HMOs
- Linear gaps
- Door frames
- Pipe & cable gaps
Fire rated sealant for homes and businesses in Southwood
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 are often asked to deal with gaps left after a refit or conversion and open joints along the top of partitions, on pipe & cable gaps, flats & HMOs and plasterboard & masonry.
In a smaller place like Southwood, commercial jobs tend to be smaller buildings: a pub, a surgery, a school, a shop or a few business units. The work is the same as in a big building, just on a smaller scale.
There’s a 12-month guarantee on every job.

- Place
- Southwood (GU14, GU51)
- Wider area
- Hampshire
- Guarantee
- One year on every job
- Quotes
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Southwood questions
Do you work in hotels near Southwood?
Yes, hotels and guest houses are among the places we work. Rooms can be done a few at a time, so the building stays open.
Will you come out to Southwood?
Yes, Southwood is covered. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
What does fire rated sealant cost?
Every job is different, so each one gets its own quote. To get one, phone 0345 464 0079 or email us with a short description of the job.
Do you remove the old sealant?
Always. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
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. Brands we use include Arbo and Everbuild.
Can you tell me which gaps need fire stopping?
No. We follow the requirements from your assessor, designer or building control.
Do you seal gaps around fire door frames?
Yes. Gaps behind architraves are a common job for us. The door and its fittings are a separate job for a door specialist.
Do you guarantee your work?
Yes, always. There’s a 12-month guarantee on every job, wherever you are.
Fire rated sealant around Southwood
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 work to the specification you’re given, installing the product to its tested details. Southwood has hotels and guest accommodation in and around it. For hotels, a room-by-room programme keeps most rooms in use while the work goes on.
For site and facilities teams at buildings such as Southwood Infant School, service openings in fire-resisting walls need checking after any refurbishment. If you let a flat or house near Fleet station, new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant. Community buildings like St John the Baptist are part of the picture too: older buildings that have had new heating or wiring often have service gaps worth checking.
Southwood is about 1 mile west of Farnborough, in Hampshire. If you need fire rated sealant in Southwood, it’s easy to get a quote: please ring 0345 464 0079 or drop us an email. We’re based in Crawley and cover Hampshire. Across Hampshire, we cover 683 places, and Southwood is one of them. There’s also a page for Reading, about 13 miles away.
Work in GU14 and GU51 works the same way as everywhere else we cover. Whether your property is on Fleet Road, Kennels Lane and Summit Avenue or a nearby road, our applicators can take on the job. Close by, we work in Cove (1 mile north), Farnborough (1 mile east), North Camp (2 miles east), Mytchett (3 miles east) and Aldershot (3 miles south-east). Larger places within reach include Basingstoke (13 miles west), Alton (12 miles south-west), Yateley (4 miles north-west), Bordon (13 miles south), Hook (7 miles west) and Popley (12 miles west).
Local landmarks in Southwood
In Southwood, that means homes and buildings near National Aerospace Library, Ancells Farm Park and Cove School. The nearest railway station is Fleet station, roughly 1.5 miles west. Well-known places in the area include Hart Shopping Centre (2.1 miles west) and Royal Army Dental Corps Historical Museum (2.6 miles south-east). Green spaces nearby include Aunt's Pool and Ball Hill.
How we quote for fire rated sealant
There’s no set price list, because jobs vary so much. What we look at:
- Working hours on commercial sites
- How many areas need sealing
- Whether there’s mould to deal with
- The type of sealant required
Leaving a failed joint normally makes the job bigger, not smaller, as water and mould keep getting in. If you’re not sure whether it needs doing, ring 0345 464 0079 or drop us an email and we will give you an honest view and a quote.
Asking for a quote
You do not need to know the technical terms. It helps if you can tell us:
- If someone has resealed it before
- The rough size of the job
- Pictures of the joints, sent by email
- Whether it’s a home or a business
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved.
Places near Southwood
What else we do in Southwood
Why act early in Southwood
Paying for fire stopping that has to be redone is a false economy. Work that doesn’t follow the tested detail may have to come out again once someone inspects it. In an older home around Southwood, damp from a failed joint can get into timber and plaster, and that’s a much bigger job than renewing the sealant.
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why choose Mr Mastic in Southwood
- Over 20 years’ experience
- Anti-fungal sanitary silicone in wet areas
- Any old sealant cut out fully, not covered over
- Quality sealants from Arbo and Everbuild
Read our cost guide or what customers say.
How it works
Once we’re on site, we check the joints match what you told us. If anything is different, we explain it before carrying on. After that, the work takes from a few hours to a few days, depending on the number of gaps and the access. In a smaller place like Southwood, parking is seldom the issue; lanes, gates and long drives are worth mentioning. For outside work, side access and the height of the joints help us plan.
- We start with the survey or action list, checking the size and surfaces of every gap.
- Anything that isn’t fit for the job comes out, and the gap is cleaned.
- We put in whatever backing or fill the product detail specifies.
- We apply the fire-rated or intumescent sealant to the specified depth and tool it.
- We record the locations and products used for your records.
Preparing for the visit
- For business premises, tell us about site rules or sign-in
- Tell us if parking is tricky
- Try not to wet indoor joints just before the visit
How to get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job. When it suits you, phone 0345 464 0079 or drop us an email.
Related advice
For landlords and businesses
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Keeping the joints in good condition
Looking after new joints is easy, and it makes a real difference:
- Get damaged fire seals looked at promptly
- Photograph sealed gaps before they’re covered up
- Check risers, ceiling voids and cupboards during building checks
- Tell trades working in the building that fire seals must be put back
Do not drill through or remove a fire seal without putting it back properly. If you need new services through a sealed wall, plan the fire stopping as part of the job.
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.
Surface by surface
Plasterboard walls
We check that the board around the gap is sound. Loose material is removed so the sealant has a firm edge.
Flats and HMOs
Conversions usually leave a mix of old and new service holes. The gaps on your list are sealed with a fire-rated product and record where they are.
