Hampshire · England
Fire Rated Sealant in Hartley Mauditt
Fire rated sealant for Hartley Mauditt, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Sealant items on a fire risk assessment action list
- Unsealed gaps around fire door frames
- Old fire sealant that has split or come away
About our fire rated sealant in Hartley Mauditt
Door frame gaps, linear joints and holes around services all have their own details. We check the size and the substrate before choosing the product, then the sealant goes in to the depth the product’s details set. Typical jobs include old fire sealant that has split or come away and holes left by a change of layout, across flats & HMOs, door frames and service penetrations.
Somewhere as small as Hartley Mauditt, commercial jobs tend to be pubs, holiday lets, farm buildings or halls rather than offices. Each still needs sound sealant in its washrooms and kitchens, and fire-rated joints where services pass through walls.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Place
- Hartley Mauditt (GU34)
- Region
- Hampshire
- Guarantee
- One year on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026

Surface by surface
Plasterboard walls
Plasterboard partitions are common in flats, offices and conversions. We use a product tested in that kind of wall for each gap size.
Masonry and concrete
Masonry is dusty and porous, so preparation matters. The gap is cleaned and backed where required before applying the sealant.
Can I do it myself?
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
Commercial buildings in Hartley Mauditt
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’re given, installing the product to its tested details.
Rented homes near Alton station change hands often, and new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant.
Hartley Mauditt is about 3 miles south-east of Alton, in Hampshire. Homes, rented property, offices and hotels in Hartley Mauditt is covered for fire rated sealant. The work is guaranteed for a year. Our Hampshire coverage runs to 683 places, and Hartley Mauditt is one of them. You can also see our page for Portsmouth, roughly 22 miles from Hartley Mauditt.
Our applicators cover all of GU34 for fire rated sealant. Nearby, we also carry out fire rated sealant in East Worldham (1 mile north), Oakhanger (2 miles east), Upper Farringdon (2 miles west), Farringdon (2 miles west) and Chawton (2 miles north-west). We also work in nearby towns such as Basingstoke (12 miles north-west), Farnborough (14 miles north-east), Fleet (12 miles north-east), Horndean (15 miles south), Aldershot (12 miles north-east) and Alton (3 miles north-west).
Landmarks near Hartley Mauditt
Hartley Mauditt’s nearest station is Alton station, roughly 2.5 miles north-west of the centre. Well-known places in the area include Alton Community Hospital (2.5 miles north-west) and The Romany Museum (1.6 miles south). Not far away are Selborne Hill and Deadwater Valley.
Keeping the joints in good condition
No joint lasts for ever, but care makes a real difference. A few tips:
- Flag any open gap you spot round a pipe or cable
- File the fire-stopping record where your assessor can find it
- Take pictures of fire stopping before ceilings or boxing go back
- Ask every contractor to reseal any fire stopping they disturb
Tell other trades that the gaps have been sealed, and make sure anything they disturb is resealed with a suitable product. A lot of damaged fire stopping comes from later work.
Leave a fire-stopping gap open and smoke can move through the building much more easily. Closing it is normally a straightforward job.
Work for landlords, hotels and businesses
Mouldy or split sealant often shows up at the end of a tenancy. Several properties can be quoted together.
For anyone letting property in or around Hartley Mauditt, several properties can be quoted together. Send us the addresses and the work at each, and pictures by email help.
When something else is needed
We’ll always be straight with you, so here’s what new sealant won’t do:
- Doors that are not fire doors in the first place
- Openings too large for sealant, which need batts, boards or another system
- Deciding what fire stopping a building needs
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think.
Where we work in Hartley Mauditt
- Flats & HMOs
- Door frames
- Pipe & cable gaps
- Service penetrations
- Plasterboard & masonry
- Linear gaps
What happens on the day
When we arrive, we look over the joints with you first. We protect the surfaces around the joints before any work begins. Most jobs take anything from a few hours to several days, depending on how many gaps there are. Somewhere as small as Hartley Mauditt, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Access to each area is agreed so the work can run in order.
- Old, damaged or unsuitable sealant is removed.
- Gaps are cleaned of dust and loose material.
- The fire-rated or intumescent sealant is applied and tooled to the tested detail.
- Locations and products are written up and any gaps unsuitable for sealant are flagged.
Before we arrive
- Clear items away from the joints we’re working on
- For business premises, tell us about site rules or sign-in
- Let us know about stairs, lifts or work at height
Getting a quote
Getting a quote is simple: let us know the job and the location. Photos by email help us understand the job, and we’ll come back to you with a quote.
Read more
Nearby places to Hartley Mauditt
More services for Hartley Mauditt
Questions from Hartley Mauditt
Will you come out to Hartley Mauditt?
Yes, we do. 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.
Do you work for landlords with property near Alton station?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before work begins.
Where are you based?
Mr Mastic is based in Crawley. We cover Hartley Mauditt and the rest of Hampshire, along with the rest of our area.
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. We use products from Arbo and Everbuild.
Can you quote for more than one area?
Of course. Doing several areas at once is usually more efficient, so mention them when you ask for a quote.
Do the sealants smell?
Possibly a little. Any smell clears as the sealant cures.
Do you remove the old sealant?
Yes, always, and completely. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
Do you carry out fire risk assessments?
No. We work from the specification you give us and install to the manufacturer’s details.
What we’re called out for in Hartley Mauditt
Buildings are refitted and reconfigured over the years. Conversions to flats and HMOs, and office refits, create new walls and new routes for services, with gaps to match.
These are the problems we’re asked about most:
- Holes left by a change of layout
- Gaps filled with a product that is not fire-rated
- Old fire sealant that has split or come away
- Open gaps behind door architraves
If you look after a church, hall or community building such as St Leonard's Church, gaps around pipes and cables are worth checking after any building work there.
What your quote should include
- Which sealant they’ll use, and why
- What happens if the job turns out different
- How the surfaces are prepared before sealing
- What insurance they hold
