Hertfordshire · England
Fire-rated sealant in Frithsden, Hertfordshire
Intumescent and fire-rated sealant around gaps, frames and service penetrations for homes and businesses in Frithsden and across Hertfordshire. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Fire stopping disturbed by later work
- Gaps where walls meet ceilings or slabs
- Door frames with gaps between frame and wall
What happens if it’s left?
Fire-rated sealants need more care than everyday sealant. Depth, backing and surface preparation all affect how a seal performs, so we follow the maker’s details on every gap. Around Frithsden, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
Why book with us
- Anti-fungal silicone where joints get wet
- Neat joints and a tidy finish
- Full insurance on every job
- Domestic, commercial and hotel work
Read what affects the cost or what customers say.
Fire rated sealant for homes and businesses in Frithsden
We don’t assess buildings or decide what fire stopping is needed; your assessor, designer or building control sets that out. Our part is applying the specified sealant carefully, to the right depth and with the right backing. If you’re dealing with joints picked up in a fire-stopping survey and standard silicone or caulk in a fire-stopping gap, we can put it right, on linear gaps, door frames and service penetrations alike.
For a small place like Frithsden, the journey and timings are agreed in advance, so it can be fitted around guests, customers or events where possible.
Each job carries a 12-month guarantee, large or small.
- Place
- Frithsden (HP1)
- Wider area
- Hertfordshire
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Questions from Frithsden
Do you cover smaller places like Frithsden?
Yes, Frithsden is covered. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you cover Frithsden for fire rated sealant?
Yes, Frithsden is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or email us with a few details of the job.
What does intumescent mean?
Fire-rated is the broad term for sealants tested for fire stopping. Intumescent types expand when heated, and they’re one of the options. We use whichever the specification and tested details call for.
Do you work in flats, HMOs and commercial buildings?
Yes. We work in flats, HMOs, schools, offices and other commercial buildings, including occupied ones. We agree access and the order of work with you first.
What information do you need?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Do you have insurance?
Yes. We’re fully insured, and we can confirm the details when we quote.
Can ordinary silicone be used in a fire-stopping gap?
No. It looks sealed but will not perform as fire stopping. A tested fire-rated product is needed, or ask us to do it.
Will the old sealant be removed?
Yes. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
Honest limits
Some problems need a builder, plumber or other trade rather than us:
- Issuing a fire rating or certificate for a building
- A wall that isn’t a fire-resisting element to begin with
- Openings too large for sealant, which need batts, boards or another system
If in doubt, phone 0345 464 0079 or email us and we will say what we think.
Where we work in Frithsden
- Plasterboard & masonry
- Flats & HMOs
- Door frames
- Service penetrations
- Linear gaps
- Pipe & cable gaps
Fire rated sealant around Frithsden
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 work to the specification you’re given, installing the product to its tested details.
If you look after a building such as Potten End CofE Primary 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 Church of St Lawrence, older buildings that have had new heating or wiring often have service gaps worth checking.
Frithsden is about 2 miles north-east of Berkhamsted, in Hertfordshire. Anywhere in HP1, our applicators can take on fire rated sealant. 381 places in Hertfordshire are on our list. You can also see our page for London, about 27 miles away.
Here we cover the HP1 postcode area for fire rated sealant. If you’re just outside Frithsden, we cover Nettleden (1 mile north-east), Potten End (1 mile south), Great Gaddesden (1 mile north-east), Fields End (1 mile south-east) and Ashridge (2 miles north-west). We also work in nearby towns such as Watford (10 miles south-east), Hemel Hempstead (3 miles south-east), St Albans (9 miles east), Welwyn Garden City (14 miles east), Harpenden (8 miles east) and Hatfield (13 miles east).
Near you in Frithsden
Around Frithsden, our work takes us to homes and buildings near John F Kennedy Catholic School, among other places. The nearest railway station is Berkhamsted station, roughly 1.8 miles south-west. Well-known places in the area include Hawridge Court (4.9 miles south-west) and Hemel Hempstead Hospital (3.1 miles south-east). For a walk, there’s Long Deans.
For landlords and businesses
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Mouldy or split sealant often shows up at the end of a tenancy. Several properties can be quoted together.
How it works
There isn’t 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, including the tidy-up. Somewhere as small as Frithsden, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We begin by agreeing the list of gaps from your assessor’s or designer’s requirements.
- Each gap is measured and its substrate and service noted.
- Any non-fire-rated filler is removed and the faces cleaned.
- The specified fire-rated sealant goes in over any backing its detail requires.
- We hand over a list of locations and products.
Preparing for the visit
- Let us know about earlier repairs to the joints
- Keep pets and children clear of the area while we work
- Mention any leaks or damp you’ve noticed
Ask for a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. Whenever you’re ready, phone 0345 464 0079 or drop us an email.
Advice
When to call us in Frithsden
In some buildings the gap was filled with the wrong thing in the first place: general-purpose foam, everyday silicone or caulk in a place that needed a tested fire seal. It may look fine, but it is not a fire-rated seal.
If you can see any of these, it’s time to have the joints looked at:
- Open gaps behind door architraves
- Gaps flagged on a fire risk assessment
- Old fire sealant that has split or come away
- Gaps filled with a product that is not fire-rated
For landlords with property near Berkhamsted station, new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant.
What your quote should include
- Is the old sealant removed completely?
- How much experience the applicator has
- What insurance they hold
- How the joint is cleaned and prepared
Should I try it myself first?
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Also near Frithsden
More services for Frithsden
Quotes for fire rated sealant in Frithsden
We do not publish a price list, because no two jobs are the same. What we look at:
- How many areas need sealing
- How much there is to do
- The type of sealant required
- The old material and how stubborn it is
Leaving a failed joint generally makes the job bigger, not smaller, as water and mould keep getting in. If you’re not sure whether it needs doing, call 0345 464 0079 or send us an email for an honest opinion and a quote.
Asking for a quote
There’s no need for technical detail. Just tell us:
- The problem you’ve noticed
- Photos by email, if that’s easy
- Access, such as stairs, a lift or height
- Where the property is
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and add photos by email if you can.