Hampshire · England
Fire-rated sealant in Catherington, Hampshire
Problem with your fire-stopping gaps in Catherington? We remove the old material, prepare the joints and seal them properly, with a one-year guarantee.
- Open holes round services passing through fire walls
- Cracked or shrunken fire-rated sealant
- Ordinary sealant used where a fire-rated product was needed
Fire rated sealant in Catherington
Where services or frames pass through a fire-resisting wall or floor, the gap around them needs a fire-rated seal. Each gap is sealed to the product maker’s tested detail for its size and substrate. We’re often asked to deal with open joints along the top of partitions and gaps filled with a product that isn’t fire-rated, across pipe & cable gaps, plasterboard & masonry and door frames.
If you have holiday lets, a converted barn used for business or a community building near Catherington, washroom and kitchen sealant and any fire-rated joints need the same attention as anywhere.
All our work is covered by our one-year guarantee, wherever you are in Hampshire.
- Place
- Catherington (PO8)
- Region
- Hampshire
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
When it isn’t the sealant
We’ll always be straight with you, so here’s what new sealant will not do:
- Openings too large for sealant, which need batts, boards or another system
- A wall that is not a fire-resisting element to begin with
- Issuing a fire rating or certificate for a building
If in doubt, phone 0345 464 0079 or email us and we will say what we think.
What we seal
- Flats & HMOs
- Linear gaps
- Pipe & cable gaps
- Service penetrations
- Plasterboard & masonry
- Door frames
More services for Catherington
FAQs for Catherington
Can you help a landlord with a rental near Rowlands Castle station?
Yes, we work for landlords and letting agents. You can call 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before we start.
Can you do fire rated sealant in Catherington?
Yes, Catherington is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or email us with a few details of the job.
Is there any odour?
There can be a smell while the sealant cures, but it fades. Ventilation helps.
Do you provide details of the products used?
Yes. Every gap we seal is listed with the product used.
How long does the job take?
Most jobs take anything from a few hours to several days, depending on how many gaps there are, including preparation and clearing up. We’ll confirm how long when we quote.
Are you insured?
Yes. Full insurance covers our work.
Do you remove the old sealant?
Yes. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Can new sealant go over the old?
No. Fresh sealant doesn’t stick to old sealant, and it traps any mould or water underneath. It all has to come out first.
Keeping the joints in good condition
Aftercare is simple, and it makes a real difference:
- Keep general-purpose foam and caulk away from fire-stopping gaps
- Do not paint over fire sealant until it has cured
- Keep pictures of seals that will be hidden
- Keep the record of products and locations with your fire safety documents
Leave the sealant to cure fully before painting near it. Not every fire-rated sealant takes paint and we’ll tell you which one you have.
Open gaps don’t only matter in a fire: they also let noise, draughts and sometimes pests through. Dealing with them early helps with all of these.
What affects the cost of fire rated sealant
Some jobs are bigger than they look, and some smaller. The main factors:
- Working hours on commercial sites
- The size of the job
- The type of sealant required
- How many areas need sealing
What it costs depends on the size of the job, how much old material has to come out and how easy the joints are to reach. You will have a clear quote before any work starts.
Asking for a quote
Before you ask for a quote, have a think about:
- What’s wrong with the joints now
- The address or postcode of the job
- Photos by email, if that’s easy
- The type of property
If you are in Catherington and need fire rated sealant, call 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and you will get a clear quote before any work starts.
What happens on the day
Most of a good job is in the preparation, and we do not rush it. Every joint is cleaned and dried before new material goes in. All told, the work takes from a few hours to a few days, depending on the number of gaps and the access. In a small place like Catherington, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We go through the gaps on your list or survey and check each one’s size and substrate.
- Anything that isn’t fit for the job comes out, and the gap is cleaned.
- Where the tested detail needs backing or fill, we fit it.
- Fire-rated or intumescent sealant is applied to the right depth and tooled.
- Finally, we list where we worked and what we used, for your records.
Before we arrive
- Tell us about access, such as stairs, a lift or high-level joints
- For indoor joints, keep the area dry beforehand if you can
- For business premises, tell us about site rules or sign-in
Get a quote
Getting a quote is simple: let us know the job and the location, and roughly how big it is. A few photos by email make the job easier to understand, and we will come back to you with a quote.
Related advice
What the job involves on each surface
Flats and HMOs
Conversions usually leave a mix of old and new service holes. We seal the ones on your specification with a tested product and the locations noted.
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.
Fire rated sealant around Catherington
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.
For landlords with property near Rowlands Castle station, new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant. Managing a site like Catherington Church of England Infant School? Then fire-stopping around service openings should be restored whenever new services go in. Community buildings like Church of All Saints are part of the picture too: gaps around pipes and cables are worth checking after any building work there.
Catherington is about 2 miles north of Horndean, in Hampshire. Jobs in Catherington get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. 683 places in Hampshire are on our list. You can also see our page for Portsmouth, roughly 9 miles from Catherington.
Work in PO8 is quoted and booked the same way as anywhere else. Local streets include Glamorgan Road, Wrexham Grove and White Dirt Lane, and we cover them all. We also cover the places around Catherington: Clanfield (1 mile north), Lovedean (2 miles south-west), Horndean (2 miles south), Wecock Farm (2 miles south-west) and Anmore (3 miles south-west). Within a short drive, we also cover Gosport (11 miles south-west), Havant (5 miles south), Eastleigh (15 miles west), Fareham (10 miles south-west), Alton (15 miles north) and Hedge End (13 miles west).
Near you in Catherington
Around Catherington, our work takes us to homes and buildings near Horndean Technology College, among other places. The nearest railway station is Rowlands Castle station, about 3.5 miles south-east. Well-known places in the area include Havant War Memorial Hospital (5.3 miles south) and Clanfield Earthwork (1.7 miles north-east). The countryside around Catherington includes Windmill Hill.
For landlords and businesses
In hotels, rooms out of use cost money, so the work can be planned room by room. We’ve worked in hotels as well as homes and businesses.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.
Leave it or put it right?
Paying for fire stopping that has to be redone is a false economy. If the details weren’t followed, the seal may need redoing once someone inspects it. Around Catherington, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Doing several joints on one visit is usually more efficient than separate visits. We will send you a clear quote for the lot.
Why choose Mr Mastic in Catherington
- Rated 4.9 stars on Google
- We never seal over old sealant
- A 12-month guarantee on all work
- We are fully insured
See our cost guide and what customers say.