Hertfordshire · England
Fire Rated Sealant in Great Offley
Fire rated sealant across Great Offley and nearby, with old sealant always removed completely.
- Damaged fire sealant left by other trades
- Joints picked up in a fire-stopping survey
- Fire seals that have cracked with movement
Workplaces and buildings in Great Offley
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 apply fire-rated sealant to the assessor’s or designer’s specification and the product’s tested details.
Managing a site like Offley Endowed Primary School? Then gaps opened by contractors for new cabling are a common finding in schools and offices. If you look after a church, hall or community building such as Church of St Mary Magdalene, service openings in its walls need the right fire-rated sealant, as in any building. For landlords with property near Hitchin station, fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through.
Great Offley is about 3 miles south-west of Hitchin, in Hertfordshire. Our applicators cover fire rated sealant for homeowners, landlords and businesses in Great Offley and the surrounding area, as part of our work across Hertfordshire. We cover 381 towns and villages across Hertfordshire, from the larger towns to small villages. You can also see our page for London, about 32 miles away.
Postcode districts we cover here for fire rated sealant: SG5. Fire rated sealant is available to properties on High Street, Garden Fields and John Hall Court. Nearby, we also carry out fire rated sealant in The Flints (1 mile west), Temple End (2 miles east), Ley Green (2 miles south-east) and Pegsdon (2 miles north-west). Further out, we also cover Hemel Hempstead (13 miles south-west), Stevenage (7 miles east), St Albans (12 miles south), Welwyn Garden City (11 miles south-east), Harpenden (8 miles south) and Hitchin (3 miles north-east).
Landmarks near Great Offley
Typical jobs here are in homes near The Bull Public House, among other places. The closest station to Great Offley is Hitchin station, roughly 3.7 miles north-east of the centre. Nearby you’ll also find Ravensburgh Castle (3.1 miles north-west) and Keech Hospice Care (4.2 miles west). Not far away are Pegsdon Hills and Markham's Hill.
How we handle fire rated sealant in Great Offley
In flats, HMOs, offices and schools, fire stopping is often disturbed by later work. A new cable run or a replaced pipe can leave an open hole behind. Those are the gaps we close, using a tested fire-rated product. We are often asked to deal with old fire sealant that has split or come away and gaps where walls meet ceilings or slabs, on flats & HMOs, plasterboard & masonry and pipe & cable gaps.
For holiday lets, converted business premises or a community building near Great Offley, washroom and kitchen sealant and any fire-rated joints need the same attention as anywhere.
All our work is covered by a one-year guarantee.
- Where
- Great Offley (SG5)
- Region
- Hertfordshire
- Guarantee
- 12 months on all our work
- Price
- A clear price before work begins
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Common questions in Great Offley
Can you help a landlord with a rental near Hitchin station?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before any work starts.
Do you cover Great Offley for fire rated sealant?
Yes, Great Offley 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.
Where do you work from?
We’re a Crawley-based firm. We work across South East England, London and Scotland.
Is standard sealant good enough for a fire gap?
No. A gap that needs fire stopping needs a tested fire-rated product, installed to its details.
What information do you need?
The location, the problem and the rough size of the job. If you can, email a few pictures.
Can you give us a record of the work?
Yes. Every gap we seal is listed with the product used so it’s there for the next inspection.
What’s the difference between intumescent and fire-rated sealant?
Intumescent means it swells when heated, helping close the gap. Intumescent sealants are one kind of fire-rated sealant; the right one depends on the gap and what passes through it.
Do you have insurance?
Yes. We are fully insured, and we have been doing sealant work for more than 20 years.
Landlords, agents and businesses in Great Offley
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
We also work for property managers and facilities teams in Great Offley and across Hertfordshire. Several sites can go on one quote, and we’re fully insured for the work.
Nearby places to Great Offley
Other services in Great Offley
Leave it or put it right?
Fire-rated sealants need more care than everyday sealant. How it’s installed changes how it performs, so we follow the maker’s details on every gap. Around Great Offley, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
What it costs depends on how much there is to do, how much old material has to come out and how easy the joints are to reach. We give a clear quote before we start, so you know where you stand.
Why choose Mr Mastic in Great Offley
- Sanitary silicone with an anti-fungal additive in wet areas
- Any old sealant cut out fully, not covered over
- We leave the area clean and tidy
- Domestic, commercial and hotel work
Take a look at our cost guide and customer reviews.
What affects the cost of fire rated sealant
For a quick quote, just ask. What matters most is:
- The number of rooms or windows
- Mould in or behind the old joints
- The number and length of the joints
- How easy the joints are to reach
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. The price is agreed before we begin.
Asking for a quote
To help us quote quickly, please include:
- How we’d reach the joints
- Pictures of the joints, sent by email
- Whether it has been sealed before
- The rough size of the job
We do not publish a price list. Instead, we give you a clear quote for your job. To get started, phone 0345 464 0079 or email us.
Aftercare tips
No joint lasts for ever, but care makes a real difference. A few tips:
- File the fire-stopping record where your assessor can find it
- Keep pictures of seals that will be hidden
- Look in service cupboards and ceiling voids from time to time
- Ask which product was used before you paint
File the record of locations and products with your fire safety paperwork. It saves time at the next inspection or assessment.
When you plan work that goes through walls or ceilings, plan the fire stopping too. Catching it then saves a separate visit later.
Can I do it myself?
Some sealant jobs are within reach of a careful DIYer, 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.
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
What we do, step by step
There is not much for you to do on the day. Show us the job and we’ll take it from there. The work itself takes from a few hours to a few days, depending on the number of gaps and the access. Somewhere like Great Offley needs a little journey planning: 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.
- We measure every gap and note what it’s in and what passes through.
- Unsuitable material such as ordinary foam or silicone is cut out.
- We fit backing where needed and apply the fire-rated sealant to depth.
- We hand over a list of locations and products for your records.
Getting ready for the visit
- For business premises, tell us about site rules or sign-in
- Tell us if parking is tricky
- Mention any tricky access
Getting a quote
We quote each job on its own, so the first step is telling us about yours. Simply ring 0345 464 0079 or drop us an email and describe the job, and pictures are welcome.
Advice
What sealant work cannot fix
New sealant cannot fix everything, and we’ll tell you before any work starts. Sealant won’t put right:
- Big openings where sealant alone is not the tested solution
- Certifying a building or signing off its fire safety
- Assessing a building’s fire safety
Not sure which it is? You can call 0345 464 0079 or drop us an email and we will tell you honestly before you book.
What we seal
- Door frames
- Plasterboard & masonry
- Pipe & cable gaps
- Service penetrations
- Flats & HMOs
- Linear gaps