Hampshire · England
Fire-rated sealant in Blackmoor, Hampshire
Fire rated sealant in Blackmoor from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- New service routes left unsealed after building work
- Standard silicone or caulk in a fire-stopping gap
- Open gaps behind door architraves
Honest limits
Sealant is not the answer to every problem, and we will tell you before we start. Sealant won’t put right:
- Big openings where sealant alone is not the tested solution
- Assessing a building’s fire safety
- A wall that isn’t a fire-resisting element to begin with
If in doubt, ring 0345 464 0079 or send us an email and we will say what we think.
What we seal
- Service penetrations
- Flats & HMOs
- Door frames
- Plasterboard & masonry
- Linear gaps
- Pipe & cable gaps
Fire rated sealant in Blackmoor
A fire seal relies on being installed the way it was tested: correct depth, correct backing and a product suited to the surfaces. That detail is what we take care over. Common call-outs are for linear gaps at the head of walls and gaps left after a refit or conversion, on linear gaps, pipe & cable gaps and plasterboard & masonry.
For a small place like Blackmoor, the journey and timings are agreed in advance, so the job can fit around bookings, guests or opening times where possible.
A 12-month guarantee comes as standard, so you are not left on your own once the job is done.
- Location
- Blackmoor (GU33)
- Wider area
- Hampshire
- Guarantee
- A year, on every job
- Price
- A clear price before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
More services for Blackmoor
Different surfaces, different methods
Plasterboard walls
Holes in plasterboard are often cut roughly for services. Where a hole is bigger than the sealant’s tested range, it needs another approach.
Flats and HMOs
Conversions normally leave a mix of old and new service holes. We seal the ones on your specification with a tested product and the locations noted.
Blackmoor: your questions answered
Can you help a landlord with a rental near Liss station?
Yes, we work for landlords and agents. You can phone 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before we start.
Will you come out to Blackmoor?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Do you remove the old sealant?
Yes. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
Where is Mr Mastic based?
Our base is in Crawley, West Sussex, and we work across South East England, London and Scotland.
What’s the difference between intumescent and fire-rated sealant?
Intumescent means it swells when heated, helping close the gap. It’s one type of fire-rated sealant; which product suits depends on the gap, the substrate and the service.
Can you work in occupied buildings?
Yes. Occupied flats, HMOs, offices and schools are all fine. Early starts or out-of-hours work can be arranged.
What information do you need?
Only a few details: where it is, what you’ve noticed and how we reach it. Then phone 0345 464 0079 or drop us an email.
Will it make a mess?
Tidy work is part of the job. We protect what’s around the joints, and we clear up when we’re done.
Fire rated sealant around Blackmoor
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.
Managing a site like St Matthew's Church of England Aided Primary School? Then fire-stopping around service openings should be restored whenever new services go in. For landlords with property near Liss station, any gap left by new services in shared walls should be closed with a fire-rated product.
Blackmoor is about 5 miles south-east of Alton, in Hampshire. Our applicators cover fire rated sealant for homes and businesses in Blackmoor and nearby. Blackmoor is one of 683 towns and villages in Hampshire where we work for fire rated sealant. We also work in Portsmouth, around 21 miles away.
Postcode districts we cover here for fire rated sealant: GU33. You’ll find streets such as Blackmoor Road and Sotherington Lane, all of which we cover. Neighbouring places we cover for fire rated sealant include Woolmer (1 mile south-east), Greatham (1 mile south), Longmoor (2 miles south-east), Passfield (2 miles east) and Weavers Down (3 miles south-east). Larger places within reach include Basingstoke (15 miles north-west), Farnborough (15 miles north), Fleet (13 miles north), Horndean (14 miles south-west), Aldershot (12 miles north-east) and Alton (5 miles north-west).
Around Blackmoor
Around Blackmoor, our work takes us to homes and buildings near Mill Chase Academy. For rail, the closest station is Liss station, about 3.5 miles south. Well-known places in the area include The Romany Museum (2.3 miles west) and Chase Community Hospital (1.4 miles north-east). Not far away are Selborne Hill and Deadwater Valley.
Landlord and commercial work in Blackmoor
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
Housing providers, facilities teams and property managers book us too. Several sites can go on one quote, and we are fully insured for the work.
What we do, step by step
When we get to you, we compare the joints with what we discussed. 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. Somewhere like Blackmoor needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- Access to each area is agreed so the work can run in order.
- Old, damaged or unsuitable sealant is removed.
- 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.
How to prepare
- Mention any parking rules near the property
- Try not to wet indoor joints just before the visit
- Let us know if you’ve seen damp or leaks
Ask for a quote
Call for a quick quote, or email us if that is easier. Describe what needs sealing and we’ll explain what’s involved and send you a clear quote.
Advice
Aftercare tips
Good habits help new joints last longer. Our tips:
- Include fire stopping when you schedule refits
- Look in service cupboards and ceiling voids from time to time
- Check whether a sealant can be painted before decorating over it
- Take pictures of fire stopping before ceilings or boxing go back
Don’t add foam, filler or ordinary sealant over a fire seal. If it needs repair, use the same type of product. We can tell you which product we used.
Leave a fire-stopping gap open and smoke can move through the building much more easily. Closing it is normally a straightforward job.
What happens if it’s left?
Fire-rated sealants are less forgiving than ordinary ones. Depth, backing and surface preparation all affect how a seal performs, so we follow the maker’s details on every gap. Where a wall is exposed, as many are in small places like Blackmoor, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
What you get with us
- Experience in homes, commercial sites and hotels
- Quality sealants from Arbo and Everbuild
- 180+ five-star Google reviews
- A 12-month guarantee on all work
Do you need fire rated sealant in Blackmoor?
Gaps around door frames are easily missed. The gap between the frame and the wall is hidden behind the architrave, so it can be left open when a door is replaced.
If you can see any of these, it’s time to have the joints looked at:
- Linear gaps at the head of walls
- Damaged fire sealant left by other trades
- Sealant items on a fire risk assessment action list
- Cracked or shrunken fire-rated sealant
For buildings such as St Matthew's Church, older buildings that have had new heating or wiring often have service gaps worth checking.
Comparing quotes
- How the joint is cleaned and prepared
- The length of the guarantee
- Who does the work, and how experienced they are
- What the quote includes, VAT included or not