Southampton · England
Fire Rated Sealant in Woolston
Intumescent and fire-rated sealant around gaps, frames and service penetrations for Woolston, backed by a one-year guarantee. Ask us for a quote.
- Ordinary sealant used where a fire-rated product was needed
- New service routes left unsealed after building work
- Joints picked up in a fire-stopping survey
Fire rated sealant in Woolston, done properly
In flats, HMOs, offices and schools, fire stopping is often disturbed by later work. A new cable run or a replaced pipe can leave an open hole behind. We seal them with a product tested for that kind of gap. We are often asked to deal with gaps around pipes and cables through fire-resisting walls and cracked or shrunken fire-rated sealant, on pipe & cable gaps, linear gaps and service penetrations.
Commercial work around a smaller place like Woolston normally means a pub, a shop, a school or small business units rather than office blocks. The work is the same as in a big building, just on a smaller scale.
Big or small, you get the same one-year guarantee in Woolston and across Southampton.
- Location
- Woolston (SO19, SO14)
- Wider area
- Southampton
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
When it isn’t the sealant
We won’t take on work that won’t last, so these are the limits:
- Certifying a building or signing off its fire safety
- Fire doors that need new seals, closers or hardware
- A wall that is not a fire-resisting element to begin with
Not sure which it is? You can ring 0345 464 0079 or send us an email and we will tell you honestly.
Where we work in Woolston
- Door frames
- Linear gaps
- Flats & HMOs
- Pipe & cable gaps
- Plasterboard & masonry
- Service penetrations
The process
At the end, we look at the finished work together and explain the cure time. The work normally takes anything from a few hours to several days, depending on how many gaps there are, depending on how much there is to do. For a job in Woolston, 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 plan the order of work and access, floor by floor or flat by flat.
- We take out any damaged or unsuitable sealant.
- Gaps are cleaned of dust and loose material.
- We apply and tool the sealant to the product’s tested detail.
- Locations and products are written up and any gaps unsuitable for sealant are flagged.
Before we arrive
- Tell us about any previous sealing or DIY attempts
- Keep pets and children clear of the area while we work
- Tell us about access, such as stairs, a lift or high-level joints
How to get a quote
We don’t publish a price list. Instead, your job gets its own clear quote. To arrange one, call 0345 464 0079 or drop us an email.
Related advice
Woolston questions
Do you work in hotels near Woolston?
Yes, hotels and guest houses are among the places we work. A room-by-room programme keeps most rooms in use while the work goes on.
Do you cover smaller places like Woolston?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Will we have a record of what was sealed?
Yes. Locations and products are written up when we finish. If you need photos or a set layout, ask when you get a quote.
Do you certify the fire stopping?
We do not issue ratings or certificates ourselves. What’s required is set by your assessor or designer, and the product’s tested details show what it achieves.
Are you an approved applicator?
Yes. Mr Mastic is an ARBOMaster approved applicator.
What does intumescent mean?
Intumescent means it swells when heated to help seal the gap. Intumescent sealants are one kind of fire-rated sealant; which product suits depends on the gap, the substrate and the service.
Do you have insurance?
Yes. Mr Mastic is fully insured, and we have been doing sealant work for more than 20 years.
Do you guarantee your work?
Yes. There’s a 12-month guarantee on every job.
Do you need fire rated sealant in Woolston?
Gaps around door frames are easily missed. The architrave hides the gap between frame and wall, so it can be left open when a door is replaced.
Any of these means the joints need attention:
- Sealant items on a fire risk assessment action list
- Ordinary sealant used where a fire-rated product was needed
- Open gaps behind door architraves
- Seals cut through by electricians, plumbers or data installers
For buildings such as Church of St Mark, service openings in its walls need the right fire-rated sealant, as in any building.
What to look for in a quote
- Who does the work, and how experienced they are
- What happens if the job turns out different
- How long to leave it before use
- Which sealant they’ll use, and why
Commercial buildings in Woolston
For seaside hotels, guest houses and holiday lets around Woolston, busy months put washrooms and kitchens under pressure, so it’s worth checking the sealant before the busiest weeks. 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 work to the specification you’re given, installing the product to its tested details.
Schools such as Woolston Infant School are buildings too, and fire-stopping around service openings should be restored whenever new services go in. Letting a property close to Woolston station? Then fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through.
Woolston is about 2 miles south-east of Southampton, in Southampton. Woolston gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. Woolston is one of 40 towns and villages in Southampton where we work.
Our applicators cover all of the SO19 and SO14 postcode area for fire rated sealant. We cover properties on Oak Road, Lake Road and Glen Road and the roads around them. Woolston sits on or near the A3025, which makes travel easy. Other places close to Woolston include Weston (1 mile south-east), Netley (2 miles south-east), Butlocks Heath (2 miles south-east), Hound (2 miles south-east) and Old Netley (2 miles east). Larger places within reach include Shirley (3 miles north-west), Regents Park (3 miles north-west), Townhill Park (3 miles north), Chartwell Green (3 miles north-east), Maybush (4 miles north-west) and Coxford (4 miles north-west).
What’s near Woolston
In Woolston, that means homes and buildings near The Admiral Sir Lucius Curtis pub, Chamberlayne College for the Arts and Woolston School, among other places. Woolston has its own railway station: Woolston station. A little further out are Gods House Tower - Museum of Archaeology (1.2 miles west) and Netley Castle (1.3 miles south-east). Open spaces near Woolston include Netley Common.
How we quote for fire rated sealant
Every job gets its own quote. This is what makes a difference:
- The number of rooms or windows
- The type of sealant required
- Whether the work is at height
- The number and length of the joints
Doing several joints on one visit is normally more efficient than separate visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
What we need to know
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- Photos by email, if that is easy
- Any access issues, like height or stairs
- What’s wrong with the joints now
- 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. Describe what needs sealing and we will explain what’s involved and give you a clear quote.
DIY versus a professional finish
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is.
What happens if it’s left?
An open gap in a fire-resisting wall is a route for smoke and fire. A proper seal lets the wall do its job again, and the work involved is often modest. In an older home around Woolston, damp from a failed joint can get into timber and plaster, and that is a much bigger job than renewing the sealant.
Leaving a failed joint normally makes the job bigger, not smaller, as water and mould keep getting in. If you’re unsure, ring 0345 464 0079 or drop us an email for an honest opinion and a quote.
Why choose Mr Mastic in Woolston
- Anti-fungal silicone where joints get wet
- Domestic, commercial and hotel work
- 20+ years of sealant experience
- We leave the area clean and tidy
See how sealant jobs are priced and our reviews.
Surface by surface
Linear gaps
A linear joint may need to allow for movement as well as fire. We choose a product and depth that suit the gap and the movement from the manufacturer’s details.
Service penetrations
Different services need different details: metal pipes, cables and plastic pipes aren’t treated the same. We follow the manufacturer’s tested detail for each and we flag any that need another system.