Hampshire · England
Selborne Fire Rated Sealant
Intumescent and fire-rated sealant around gaps, frames and service penetrations for Selborne, backed by a 12-month guarantee. Ask us for a quote.
- Seals cut through by electricians, plumbers or data installers
- Fire seals that have cracked with movement
- Unsealed gaps where pipes and cables go through a wall
Should I try it myself first?
If you’ve already had a go yourself, that’s fine. We cut it out and start again, so tell us about it when you ask for a quote.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
How we handle fire rated sealant in Selborne
We often work from an action list drawn up by a fire risk assessor for buildings in Selborne. If you share the list, we can quote for the gaps that need fire-rated sealant. Typical jobs include gaps flagged on a fire risk assessment and fire seals that have cracked with movement, across plasterboard & masonry, service penetrations and flats & HMOs.
In a village or hamlet like Selborne, commercial work is more likely to be a pub, a farm shop, holiday lets or a village hall than an office block. They all have washrooms, kitchens and service openings that need the right sealant.
Whatever the size of the job, it’s backed by our 12-month guarantee.
- Place
- Selborne (GU34)
- Region
- Hampshire
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Common questions in Selborne
Can you help a landlord with a rental near Alton station?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before we start.
Will you come out to Selborne?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
What fire rating will the seal have?
That isn’t something we state or certify. The requirement comes from your assessor, designer or building control, and we apply a product tested for it, recording the locations and products.
Where do you work from?
Mr Mastic is based in Crawley. Our applicators cover Selborne, along with the rest of our area.
How long will you be here?
A typical job takes from a few hours to a few days, depending on the number of gaps and the access, including preparation and clearing up. We’ll confirm how long when we quote.
Will the old sealant be removed?
Yes, every time. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
Can I add another job to the visit?
Yes. More than one area can be quoted together.
Do the sealants smell?
It depends on the product. Some products have a noticeable smell, others very little, and any smell fades as they cure.
Do you need fire rated sealant in Selborne?
Gaps also open up as buildings move: a seal that cracks or pulls away leaves a path for smoke. Knocks, maintenance and building work damage it further.
Most people get in touch after spotting one of these:
- Gaps where walls meet ceilings or slabs
- Gaps around pipes and cables through fire-resisting walls
- Joints picked up in a fire-stopping survey
- Door frames with gaps between frame and wall
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.
Questions to ask before you book
- When the joint can take water or movement
- How long the guarantee is
- Which colour the sealant will be
- Who turns up on the day
Landlords, agents and businesses in Selborne
Housing providers, facilities teams and property managers book us too in Selborne and across Hampshire. Several sites can go on one quote.
We work for letting agents and landlords as well as householders. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
How the visit works
There’s no need to move everything out, just the space around the work. Everything nearby is protected, and the job takes a few hours for a handful of gaps, and longer for a whole building for a typical job. For a village or hamlet like Selborne, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- Before starting, we go through the specification or action list with you.
- Each gap is measured and its substrate and service noted.
- Any non-fire-rated filler is removed.
- We fit backing where needed and apply the fire-rated sealant to depth.
- We hand over a list of locations and products.
How to prepare
- Mention any parking rules near the property
- On commercial sites, let us know about site rules
- Clear the area around the work
How to get a quote
We quote each job on its own. Simply call 0345 464 0079 or email us and describe the job.
Read more
How to look after the new joints
Joint life depends on how it’s used and looked after. We suggest:
- Include hidden areas like risers in routine checks
- Do not fill fire-stopping gaps with ordinary foam or silicone
- Photograph sealed gaps before they’re covered up
- Keep the record of products and locations with your fire safety documents
Any fire seal that is cut or drilled needs resealing to its tested detail. New services through a sealed wall should include fire stopping in the plan.
It’s easiest to seal gaps while they’re few and easy to reach. Leave them and each new job adds another hole.
Fire rated sealant around Selborne
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 are given, installing the product to its tested details.
For buildings such as Church of St Mary, gaps around pipes and cables are worth checking after any building work there. Managing a site like Selborne Church of England Primary School? Then fire-stopping around service openings should be restored whenever new services go in.
Selborne is about 4 miles south of Alton, in Hampshire. Whether you are in the middle of Selborne or further out, fire rated sealant is available for homes and businesses alike. Our Hampshire coverage runs to 683 places, and Selborne is one of them. For nearby work, see our Portsmouth page.
We cover every part of GU34 for fire rated sealant and the streets around it. Local streets include Huckers Lane, Ganders Close and Selborne Road, and we cover them all. Close by, we work in Newton Valence (1 mile west), Empshott (2 miles south-east), Lower Green (3 miles south), Hawkley (3 miles south) and Oakshott (4 miles south). We also work in nearby towns such as Basingstoke (13 miles north-west), Fleet (13 miles north), Horndean (14 miles south), Aldershot (13 miles north-east), Alton (4 miles north) and Waterlooville (15 miles south).
Around Selborne
Around Selborne, our work takes us to homes and buildings near The Jubilee Tap. Selborne’s nearest station is Alton station, roughly 3.8 miles north. Other landmarks nearby include The Romany Museum (under half a mile south-east) and Alton Community Hospital (3.5 miles north-west). The countryside around Selborne includes Selborne Hill and Deadwater Valley.
How we quote for fire rated sealant
The price is agreed before any work begins. It’s based on:
- The amount of work
- Any mould that needs treating
- How easy the joints are to reach
- The product the joint needs
What it costs depends on the size of the job, how hard the old material is to remove and access to the work. You will have a clear quote before any work starts.
What to tell us for a quote
Before you ask for a quote, have a think about:
- Where the property is
- The problem you’ve noticed
- If someone has resealed it before
- How we’d reach the joints
For a quote, phone 0345 464 0079 or drop us an email with the location and a short description of the problem. You will have a clear quote before any work starts.
Surface by surface
Door frames
A door can only do its job if the gap behind its frame is sealed too. We fill it with a fire-rated product suited to the materials either side.
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.