Hampshire · England
New Forest Fire Rated Sealant
Specialist fire rated sealant for New Forest: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Seals cut through by electricians, plumbers or data installers
- Gaps around pipes and cables through fire-resisting walls
- Sealant items on a fire risk assessment action list
Why it’s worth doing now in New Forest
If an assessor has flagged gaps, it makes sense to close them before the next review. Getting them done and written up means you can show the action was taken. Around New Forest, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Every job is a little different, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part, and we will explain the quote if you ask.
Why New Forest customers choose us
- Any old sealant cut out fully, not covered over
- More than 20 years in sealant work
- 180+ five-star Google reviews
- Experience in homes, commercial sites and hotels
Take a look at how sealant jobs are priced or our reviews.
Fire rated sealant in New Forest, done properly
Later work by other trades often breaks through fire stopping, especially in flats, HMOs, offices and schools. One new cable or pipe can leave a gap that nobody goes back to seal. Those are the gaps we close, using a tested fire-rated product. Common call-outs are for gaps around pipes and cables through fire-resisting walls and holes left by a change of layout, across door frames, flats & HMOs and plasterboard & masonry.
For holiday lets, converted business premises or a community building near New Forest, the washrooms, kitchens and any fire-rated joints need the same care as a big site.
We stand behind the work with a 12-month guarantee.
- Place
- New Forest (SP6)
- Region
- Hampshire
- Guarantee
- A year, on every job
- Price
- A clear price before work begins
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What sealant work can’t fix
In fairness, some problems need a different trade:
- Fire doors that need new seals, closers or hardware
- Big openings where sealant alone is not the tested solution
- Sign-off of the building, which sits with building control or your assessor
If you’re not sure, just call 0345 464 0079 or drop us an email and we will give you a straight answer.
Joints and surfaces we work on
- Plasterboard & masonry
- Flats & HMOs
- Pipe & cable gaps
- Linear gaps
- Service penetrations
- Door frames
Common questions in New Forest
Will you come out to New Forest?
Yes, New Forest is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Is fire rated sealant in New Forest guaranteed?
All our work, in New Forest and everywhere else, comes with a 12-month guarantee. We’re also fully insured and ARBOMaster approved.
Do you carry out fire risk assessments?
No. We work from the specification you give us.
What information do you need?
The location, the problem and the rough size of the job. Photos by email help too.
Can you tell me how many minutes the seal will last?
Ratings and certificates are not something we issue. What’s required is set by your assessor or designer, and the product’s tested details show what it achieves; we install to those details and record what we did.
Do you have insurance?
Yes. We are fully insured.
Can you seal over the old sealant?
No, it won’t last. It can look neat for a few weeks, but the new layer lifts away from the old one. The old sealant has to come out completely.
Where is Mr Mastic based?
Our base is in Crawley, and we cover South East England, London and all of Scotland.
DIY sealant or a professional job?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
If you’ve already had a go yourself, that’s fine. We cut it out and start again.
How we quote for fire rated sealant
The price is agreed before any work begins. It takes into account:
- How much old sealant there is and how hard it is to remove
- The type of sealant required
- Mould in or behind the old joints
- How easy the joints are to reach
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are unsure, call 0345 464 0079 or drop us an email and we will give you an honest view and a quote.
What to tell us for a quote
There’s no need for technical detail. Just tell us:
- What’s wrong with the joints now
- A few pictures by email, if you can
- If it’s domestic, commercial or a hotel
- Whether it has been sealed before
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. When it suits you, ring 0345 464 0079 or send us an email.
Landlords, agents and businesses in New Forest
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
Different surfaces, different methods
Masonry and concrete
Masonry is dusty and porous, so preparation matters. We brush and vacuum the gap and use backing where the detail needs it before the sealant goes in.
Flats and HMOs
Conversions generally leave a mix of old and new service holes. The gaps on your list are sealed with a fire-rated product and the locations noted.
What fire rated sealant looks like in New Forest
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, which is often where open fire-stopping gaps are first noticed. We work to the specification you are given, installing the product to its tested details.
Around New Forest, as everywhere, fire rated sealant is only as good as the preparation behind it. If you look after a church, hall or community building such as Church of All Saints, service openings in its walls need the right fire-rated sealant, as in any building.
New Forest is in Hampshire. Anywhere in SP6, we can carry out fire rated sealant at your property. New Forest is one of 683 places in Hampshire we cover for fire rated sealant. We also work in Southampton, about 23 miles from New Forest.
Here we cover the SP6 postcode area for fire rated sealant. You will find streets such as Sillens Lane and Townsend Lane. We also cover the places around New Forest: Martin (1 mile north-east), Rockbourne (3 miles east) and Damerham (3 miles south-east). Further out, we also cover Ringwood (11 miles south-east), Fordingbridge (6 miles south-east), St Leonards (11 miles south), Alderholt (6 miles south-east), Poulner (11 miles south-east) and Ashley Heath (10 miles south).
Local landmarks in New Forest
Other landmarks nearby include Cranborne Castle Hill (4.4 miles south). Green spaces nearby include Western Downs.
How the visit works
We work through the job in order: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours for a handful of gaps, and longer for a whole building. In a small place like New Forest, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- 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
- Move anything stored near the joints
- On commercial sites, let us know about site rules
- Tell us about access, such as stairs, a lift or high-level joints
How to get a quote
If you’re in New Forest and need fire rated sealant, phone 0345 464 0079 or email us. Tell us what the problem is and where, and you will get a clear quote before any work starts.