Hampshire · England
Fire-rated sealant in Upper Common, Hampshire
Fire rated sealant in Upper Common from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Old fire sealant that has split or come away
- Door frames with gaps between frame and wall
- Gaps flagged on a fire risk assessment
Fire rated sealant in Upper Common
Where services or frames pass through a fire-resisting wall or floor, the gap around them needs a fire-rated seal. We apply intumescent and fire-rated sealants to the manufacturer’s tested details for each gap, with a record of the products and locations if you need one. If you’re dealing with gaps left after a refit or conversion and linear gaps at the head of walls, we can help, whatever the surface.
For holiday lets, converted business premises or a community building near Upper Common, the washrooms, kitchens and any fire-rated joints need the same care as a big site.
Every job comes with a 12-month guarantee.
- Where
- Upper Common (RG25)
- Wider area
- Hampshire
- Cover
- 12 months on all our work
- Price
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Can I do it myself?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is.
How we quote for fire rated sealant
There’s no set price list, because no two jobs are the same. What we look at:
- Whether old sealant or filler has to be cut out
- How much there is to do
- The product the joint needs
- Mould in or behind the old joints
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.
What to tell us for a quote
To make quoting easier, please include:
- Pictures of the joints, sent by email
- Where the property is
- The type of property
- Any access issues, like height or stairs
If you’re in Upper Common and need fire rated sealant, ring 0345 464 0079 or send us an email. Tell us what the problem is and where, and we will agree the price before any work begins.
How the job changes by surface
Linear gaps
Long, narrow gaps appear where walls meet slabs and ceilings. They’re sealed with a fire-rated sealant over backing where the detail calls for it.
Service penetrations
New gaps tend to show up where services have been added. We clean out what’s there and reseal to the right depth over any backing the detail calls for.
What we do, step by step
The work is kept neat and contained to the joints we are treating. Expect the work to take from a few hours to a few days, depending on the number of gaps and the access, and we explain the cure time before we leave. Somewhere like Upper Common 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.
- We plan the order of work and access, floor by floor or flat by flat.
- We take out any damaged or unsuitable sealant.
- 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.
Getting ready for the visit
- For indoor joints, keep the area dry beforehand if you can
- Tell us about any water getting in
- Tell us about any previous sealing or DIY attempts
Getting a quote
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. A few pictures by email make the job easier to understand, and we will come back to you with a quote.
Related advice
What we are called out for in Upper Common
Movement in the structure can open gaps too: cracked or debonded sealant leaves an open route through the wall. Knocks, maintenance and building work damage it further.
These are the problems we’re asked about most:
- Standard silicone or caulk in a fire-stopping gap
- Joints picked up in a fire-stopping survey
- Linear gaps at the head of walls
- Fire stopping disturbed by later work
Rented homes near Basingstoke station change hands often, and fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through.
What to look for in a quote
- Whether all the old sealant comes out first
- When the joint can take water or movement
- How long the guarantee is
- Who does the work, and how experienced they are
Upper Common: your questions answered
Do you cover Upper Common for fire rated sealant?
Yes, Upper Common is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or drop us an email and let us know what needs doing.
Will you come out to Upper Common?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can I choose the sealant colour?
Yes. White, clear and grey are common, and other colours are available for many products, and we agree the colour with you before we start.
Which products do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We’ll tell you what we are using and why.
Will there be a smell?
Possibly a little. It fades as the sealant cures, and ventilation helps.
Where are you based?
Mr Mastic is based in Crawley. We cover Upper Common and the rest of Hampshire.
Can ordinary silicone be used in a fire-stopping gap?
No. Ordinary silicone, caulk or foam isn’t tested as fire stopping. If it’s been used, we remove it and use the right product.
What’s the difference between intumescent and fire-rated sealant?
Fire-rated sealant covers any sealant tested for use in fire stopping. Intumescent ones swell in heat, and they’re one of the options. The specification and the tested detail decide which is used.
Honest limits
To be straight with you, some problems need a different trade:
- Doors that are not fire doors in the first place
- Deciding what fire stopping a building needs
- Certifying a building or signing off its fire safety
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think.
Where we work in Upper Common
- Service penetrations
- Door frames
- Flats & HMOs
- Pipe & cable gaps
- Plasterboard & masonry
- Linear gaps
How to look after the new joints
So the new joints stay in good condition:
- Check whether a sealant can be painted before decorating over it
- Make resealing part of every contractor’s brief
- Photograph sealed gaps before they’re covered up
- Do not fill fire-stopping gaps with ordinary foam or silicone
Leave the sealant to cure fully before painting near it. Some fire-rated sealants can be painted and some can’t and we will tell you which one you have.
Any job that breaks through a wall or ceiling should include resealing. Catching it then saves a separate visit later.
Nearby places to Upper Common
What else we do in Upper Common
Commercial buildings in Upper Common
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 apply fire-rated sealant to the assessor’s or designer’s specification and the product’s tested details.
For buildings such as Church of St. Martin, gaps around pipes and cables are worth checking after any building work there.
Upper Common is about 4 miles south of Basingstoke, in Hampshire. Homes, rented property, offices and hotels in Upper Common is covered for fire rated sealant, old or new, large or small. Every job comes with our one-year guarantee. 683 places in Hampshire are on our list, large and small. For nearby work, see our Reading page.
Every address in RG25 is within our area for fire rated sealant, from the main roads to the quietest streets. We also cover the places around Upper Common: Ellisfield (1 mile north-east), Cliddesden (2 miles north), Nashes Green (3 miles east), Viables (3 miles north) and Eastrop (4 miles north). Within a short drive, we also cover Basingstoke (4 miles north), Winchester (14 miles south-west), Fleet (12 miles north-east), Aldershot (15 miles east), Alton (6 miles south-east) and Petersfield (15 miles south-east).
Near you in Upper Common
We work in homes and buildings around The Fox pub and the streets around them. The closest station to Upper Common is Basingstoke station, about 4.4 miles north of the centre. Other landmarks nearby include Barton Castle (4.6 miles south) and Gliding Heritage Centre (3.5 miles south-east). For a walk, there’s Farleigh Hill.