Portsmouth · England
Fire Rated Sealant in Portsmouth Point
Problem with your fire-stopping gaps in Portsmouth Point? We remove the old material, prepare the joints and seal them properly.
- Cracked or shrunken fire-rated sealant
- Open holes round services passing through fire walls
- Gaps where walls meet ceilings or slabs
About our fire rated sealant in Portsmouth Point
We don’t assess buildings or decide what fire stopping is needed; that comes from your fire risk assessor, designer or building control. Our part is applying the specified sealant carefully, to the right depth and with the right backing. Typical jobs include gaps where walls meet ceilings or slabs and gaps around pipes and cables through fire-resisting walls, across linear gaps, service penetrations and plasterboard & masonry.
Community buildings, schools and small businesses around places like Portsmouth Point have washrooms and kitchens that see a lot of use. Sealant and fire-rated joints there matter as much as in any larger building.
All our work is covered by a 12-month guarantee, wherever you are in Portsmouth.
- Place
- Portsmouth Point (PO1, PO5, PO12)
- Wider area
- Portsmouth
- Guarantee
- 12 months on all our work
- Quote
- A clear price before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
For landlords and businesses
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. We can quote for more than one property at once.
Places near Portsmouth Point
Other services in Portsmouth Point
What happens on the day
There is not much for you to do on the day. Show us the job and we will take it from there. The work itself takes anything from a few hours to several days, depending on how many gaps there are from start to finish. A visit to Portsmouth Point is planned like any other: the time, the access and where to park are agreed in advance. 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.
- We remove any old or unsuitable filler and clean the gap.
- We put in whatever backing or fill the product detail specifies.
- The sealant goes in to the depth its detail sets, then it’s tooled off.
- We record the locations and products used for your records.
Before we arrive
- Keep pets and children clear of the area while we work
- Let us know about stairs, lifts or work at height
- For indoor joints, keep the area dry beforehand if you can
How to get a quote
Asking for a quote is easy: tell us what needs doing and where. Photos by email help us understand the job, and we will come back to you with a quote.
Related advice
Questions from Portsmouth Point
Will you come out to Portsmouth Point?
Yes, Portsmouth Point is covered. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Can you help a landlord with a rental near Portsmouth Harbour station?
Yes. We work for landlords and letting agents as well as homeowners, and several properties can be quoted together. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we’ll give you a clear price.
What should I tell you?
Only a few details: the address or postcode, what’s wrong and any access issues. Then call 0345 464 0079 or send us an email.
Is it worth trying it myself?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
Can new sealant go over the old?
No. We remove every bit of old sealant first.
What sealant do you use?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We’ll tell you what we are using and why.
What’s the difference between intumescent and fire-rated sealant?
Intumescent means it swells when heated to help seal the gap. Intumescent sealants are one kind of fire-rated sealant; the right one depends on the gap and what passes through it.
Do you have insurance?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
Fire rated sealant around Portsmouth Point
For seaside hotels, guest houses and holiday lets around Portsmouth Point, busy months put washrooms and kitchens under pressure, so it’s worth checking the sealant before the busiest weeks. There are hotels and other places to stay in and around Portsmouth Point. Hotel work can be planned room by room, with out-of-hours working where needed.
If you look after a church, hall or community building such as Portsmouth Garrison church, gaps around pipes and cables are worth checking after any building work there. If you look after a building such as St Jude's CofE Primary School, gaps opened by contractors for new cabling are a common finding in schools and offices.
Portsmouth Point is about 2 miles west of Southsea, in Portsmouth. Our applicators cover fire rated sealant for homes and businesses in Portsmouth Point and the surrounding area, as part of our work across Portsmouth. Our area takes in 19 places across Portsmouth, large and small.
Here we cover the PO1, PO5 and PO12 postcode area for fire rated sealant. Whether your property is on Park Road, Nobbs Lane and Bath Square or a nearby road, we can help. Other places close to Portsmouth Point include Portsea (1 mile north), Clayhall (1 mile south-west), Haslar (1 mile south-west), Alverstoke (2 miles south-west) and Privett (2 miles west). Larger places within reach include Hilsea (3 miles north-east), Wymering (4 miles north), Paulsgrove (4 miles north), Cosham (4 miles north-east), Drayton (5 miles north-east) and Farlington (5 miles north-east).
Landmarks near Portsmouth Point
We work in homes and buildings around Charter Academy, Portsmouth Grammar School and Bridge Tavern, among other places. There’s a railway station in Portsmouth Point itself: Portsmouth Harbour station. Well-known places in the area include Southsea Castle (1.2 miles south-east) and Portsmouth Museum And Art Gallery (less than half a mile east). Open spaces near Portsmouth Point include Portsdown Hill and Milton Locks.
Honest limits
In fairness, there are a few things sealant won’t fix:
- Fire risk assessments, which need a qualified assessor
- Certifying a building or signing off its fire safety
- Big openings where sealant alone isn’t the tested solution
Not sure which it is? You can phone 0345 464 0079 or email us and we’ll tell you honestly.
Where we work in Portsmouth Point
- Door frames
- Pipe & cable gaps
- Flats & HMOs
- Linear gaps
- Plasterboard & masonry
- Service penetrations
Surface by surface
Service penetrations
Pipes, cables and ducts passing through fire-resisting walls and floors each leave a gap. The sealant is chosen for what passes through and how wide the gap is.
Door frames
Frame gaps are normally hidden behind the architrave. We seal any open gap to the product’s tested details before the trim goes back.
When to call us in Portsmouth Point
In some buildings the gap was filled with the wrong thing in the first place: general-purpose foam, everyday silicone or caulk in a place that needed a tested fire seal. It looks sealed, but it is not fire-rated.
The most common problems we see are:
- Gaps filled with a product that is not fire-rated
- Joints picked up in a fire-stopping survey
- Open gaps behind door architraves
- Cracked or shrunken fire-rated sealant
Letting a property close to Portsmouth Harbour station? Then fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through.
Before booking anyone
- What happens if they find a problem under the old sealant
- How long to leave it before use
- Whether VAT is included
- Whether all the old sealant comes out first
Quotes for fire rated sealant in Portsmouth Point
There’s no set price list, because no two jobs are the same. What we look at:
- Whether there’s mould to deal with
- The number and length of the joints
- When we can work, for business premises
- Access and height
We do not show prices on the website, because the cost depends so much on the job itself. Call for a quick quote.
What to tell us for a quote
To help us quote quickly, please include:
- Whether it has been sealed before
- What the problem is, such as mould, gaps, leaks or cracking
- If it’s domestic, commercial or a hotel
- Access, such as stairs, a lift or height
There’s no standard price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or email us.
Looking after it afterwards
Joint life depends on how it’s used and looked after. We suggest:
- Keep general-purpose foam and caulk away from fire-stopping gaps
- Ask every contractor to reseal any fire stopping they disturb
- Plan fire stopping into any work that goes through walls or floors
- Store the list of sealed gaps with your building paperwork
Any fire seal that’s cut or drilled needs resealing to its tested detail. New services through a sealed wall should include fire stopping in the plan.
A flagged gap shouldn’t wait for the next assessment. Get it sealed and recorded.