Hertfordshire · England
Fire Rated Sealant in Radlett
Fire rated sealant for Radlett, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Linear gaps at the head of walls
- Door frames with gaps between frame and wall
- Fire stopping disturbed by later work
Radlett questions
Will you come out to Radlett?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you work for landlords with property near Radlett station?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before work begins.
Do you take out the old sealant first?
Yes, every time. New sealant won’t bond properly to old, so any old material comes out before anything new goes in.
Will you leave a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Can you fill the gap behind a fire door frame?
Yes. We seal the gap between the frame and the wall with a suitable fire-rated product. The door, its seals and closer are for a door specialist.
What information do you need?
Where the job is, what the problem is and roughly how big it is. If you can, email a few pictures.
Do I need to be at home?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Are you insured?
Yes. Full insurance covers our work.
Fire rated sealant in Radlett
Intumescent sealant looks much like any other sealant until it gets hot; then it swells to help close the gap. Which product suits a gap depends on its width, the materials either side and what runs through it. We’re often asked to deal with new service routes left unsealed after building work and standard silicone or caulk in a fire-stopping gap, across pipe & cable gaps, flats & HMOs and linear gaps.
Around a place like Radlett, halls, schools and small businesses all have washrooms and kitchens used by many people. Sealant and fire-rated joints there matter as much as in any larger building.
Whatever the size of the job, it’s backed by our 12-month guarantee.
- Location
- Radlett (WD7)
- Region
- Hertfordshire
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Should I try it myself first?
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
How to look after the new joints
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Ask which product was used before you paint
- Plan fire stopping into any work that goes through walls or floors
- Get damaged fire seals looked at promptly
- Ask every contractor to reseal any fire stopping they disturb
Keep the record we give you with the building’s fire safety documents. It helps whoever checks the building next.
If a fire risk assessment has flagged a gap, do not leave it for the next one. Get it sealed and recorded so you can show it was dealt with.
How it works
Good joint work is mostly preparation, and we do not rush it. Every joint is cleaned and dried before new material goes in. In total, it generally takes a few hours for a handful of gaps, and longer for a whole building. Parking around Radlett is usually easier than in a town centre, but mention any lanes, gates or long drives. If the job is outside, tell us about side access and how high the joints are.
- We plan the order of work and access, floor by floor or flat by flat.
- Old, damaged or unsuitable sealant is removed.
- Gaps are cleaned of dust and loose material.
- We apply and tool the sealant to the product’s tested detail.
- Locations and products are written up and any gaps unsuitable for sealant are flagged.
Before we arrive
- Plan for the work area to be out of bounds to pets and children
- Clear items away from the joints we are working on
- Tell us about access, such as stairs, a lift or high-level joints
Ask for 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 photos are welcome.
Advice
Towns and villages near Radlett
What else we do in Radlett
When it isn’t the sealant
Before you book, it’s worth knowing the limits:
- Walls or floors that weren’t built to resist fire
- Sign-off of the building, which sits with building control or your assessor
- Large holes that need a different fire-stopping system
If in doubt, call 0345 464 0079 or drop us an email and we’ll say what we think before booking.
What we seal
- Plasterboard & masonry
- Service penetrations
- Pipe & cable gaps
- Flats & HMOs
- Door frames
- Linear gaps
Work for landlords, hotels and businesses
For anyone letting property in or around Radlett, several properties can go on one quote. Send us the addresses and the work at each.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
How the job changes by surface
Masonry and concrete
Brick, block and concrete walls and floors are sealed with products tested in masonry. We clean out dust and debris before sealing so the sealant bonds.
Door frames
A door can only do its job if the gap behind its frame is sealed too. We seal that gap with a fire-rated sealant suited to the frame and wall.
Fire rated sealant in Radlett: local notes
Workplaces and the common parts of blocks of flats in England need a fire risk assessment under the Regulatory Reform (Fire Safety) Order 2005, 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.
Rented homes near Radlett station change hands often, and any gap left by new services in shared walls should be closed with a fire-rated product. For site and facilities teams at buildings such as St John's Church of England Infant and Nursery School, 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 St John, service openings in its walls need the right fire-rated sealant, as in any building.
Radlett is about 3 miles north-west of Borehamwood, in Hertfordshire. Every kind of property in Radlett can book us for fire rated sealant. The work is guaranteed for a year. Our area takes in 381 places across Hertfordshire, large and small. You can also see our page for London, roughly 16 miles from Radlett.
We work across the WD7 postcode area for fire rated sealant and the streets around it. That includes homes and businesses on Upper Station Road, Station Road and Barn Close and the roads around them. With the B462 and A5183 close by, Radlett is simple for us to get to. Close by, we work in Kemprow (1 mile west), Round Bush (1 mile south-west), Letchmore Heath (1 mile south-west), Aldenham (2 miles south-west) and Patchetts Green (2 miles south-west). We also work in nearby towns such as Watford (4 miles south-west), Hemel Hempstead (8 miles north-west), St Albans (5 miles north), Welwyn Garden City (10 miles north-east), Harpenden (9 miles north) and Hoddesdon (14 miles east).
Around Radlett
Around Radlett, our work takes us to homes and buildings near The Cat And Fiddle Public House, among other places. Radlett has its own railway station: Radlett station. Nearby you will also find Radlett and District Museum (under half a mile south-east) and Harlequin Centre (3.7 miles south-west). Not far away are Verulamium Lake and Broad Colney Lakes.
What affects the quote in Radlett
The quote reflects the job in front of us. We take into account:
- How many areas need sealing
- Whether the work is at height
- Whether there’s mould to deal with
- Any working-time requirements on site
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
What we need to know
Photos by email are helpful but not essential. Try to tell us:
- Photos by email, if that’s easy
- The rough size of the job
- The address or postcode of the job
- If someone has resealed it before
If you are in Radlett and need fire rated sealant, ring 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.