Hertfordshire · England
Fire-rated sealant in St Nicholas, Hertfordshire
Intumescent and fire-rated sealant around gaps, frames and service penetrations for homeowners, landlords and businesses in St Nicholas. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Fire stopping disturbed by later work
- New service routes left unsealed after building work
- Standard silicone or caulk in a fire-stopping gap
Looking after it afterwards
After the cure time, these simple habits help:
- Check whether a sealant can be painted before decorating over it
- Keep the record of products and locations with your fire safety documents
- Flag any open gap you spot round a pipe or cable
- Make resealing part of every contractor’s brief
Keep the record we give you with the building’s fire safety documents. It helps whoever checks the building next.
Small gaps around services are simple to deal with while there are only a few. Over time, more work adds more holes and the list grows.
How we handle fire rated sealant in St Nicholas
Filling a fire-stopping gap with standard silicone or caulk does not make it fire-rated. Anything unsuitable comes out first and the gap is resealed with a product tested for that use. If you have standard silicone or caulk in a fire-stopping gap and joints picked up in a fire-stopping survey, we can put it right, on linear gaps, pipe & cable gaps and plasterboard & masonry alike.
For a pub, café, guest house or shop in or near St Nicholas, its washrooms and kitchen need the same sealant care as any big building.
There’s a 12-month guarantee on every job.
- Where
- St Nicholas (SG1, SG2)
- Wider area
- Hertfordshire
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
How we quote for fire rated sealant
Some jobs are bigger than they look, and some smaller. The main factors:
- How much old sealant there is and how hard it is to remove
- How easy the joints are to reach
- Any working-time requirements on site
- The type of sealant required
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs, plus any working-time requirements on site. Ask us for a quote and we’ll explain what it covers.
What to tell us for a quote
You don’t need to know the technical terms. Just tell us:
- What the problem is, such as mould, gaps, leaks or cracking
- How many joints, rooms or windows are involved
- Whether it’s a home or a business
- Any access issues, like height or stairs
Quotes start with a quick conversation. 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 are ready, phone 0345 464 0079 or email us.
Can I do it myself?
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
Questions from St Nicholas
Can you help a landlord with a rental near Stevenage station?
Yes, we work for letting agents and landlords. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear price.
Is St Nicholas in your area for fire rated sealant?
Yes. We work across London and the South East, and St Nicholas is part of that. You can phone 0345 464 0079 or send us an email and tell us what needs doing, and we’ll send you a clear quote.
Do the sealants smell?
Possibly a little. Any smell clears as the sealant cures, and ventilation helps.
Where are you based?
Our base is in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
Do I need to be at home?
We need access to the joints, so we will agree that with you when we book. For inside work, that normally means someone being in.
What information do you need?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Will you leave a mess?
No. The area is protected while we work and cleaned up afterwards.
Can you give us a record of the work?
Yes. We note each location and the product that went in, so you have it on file.
Work for landlords, hotels and businesses
If you manage several properties in or around St Nicholas, several properties can go on one quote. Just tell us the addresses and what each one needs, and photos by email help.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we’ll quote.
What we cannot put right
We won’t take on work that will not last, so these are the limits:
- Sign-off of the building, which sits with building control or your assessor
- Big openings where sealant alone is not the tested solution
- Construction that does not provide fire resistance on its own
If you are not sure, just call 0345 464 0079 or drop us an email and we’ll give you a straight answer before you book.
What we seal
- Linear gaps
- Pipe & cable gaps
- Plasterboard & masonry
- Flats & HMOs
- Door frames
- Service penetrations
Leave it or put it right?
An open gap in a fire-resisting wall is a route for smoke and fire. A proper seal lets the wall do its job again, and the sealing itself is often a contained piece of work. In a smaller place like St Nicholas, wherever a wall is exposed, a failed outside joint is a real source of damp. Inside, a split seal lets water into floors and panels just as it would anywhere.
What you pay reflects the work, not guesswork. That is why we ask about the job first and agree the price before starting.
What you get with us
- Anti-fungal sanitary silicone in wet areas
- 12-month guarantee on every job
- Approved under the ARBOMaster scheme
- Tidy, careful work
Read how sealant jobs are priced or our reviews.
The process
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. Typically it takes from a few hours to a few days, depending on the number of gaps and the access. For a job in St Nicholas, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We plan the order of work and access, floor by floor or flat by flat.
- Old, damaged or unsuitable sealant is removed.
- Dust and loose debris are cleaned from each gap.
- 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.
Before we arrive
- Keep children and pets away from the work area
- For business premises, tell us about site rules or sign-in
- Mention any tricky access
Get a quote
To get a quote, call 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. We’ll give you a clear price before any work starts.
Read more
Also in St Nicholas
Workplaces and buildings in St Nicholas
Workplaces and the common parts of blocks of flats in England need a fire risk assessment under the Regulatory Reform (Fire Safety) Order 2005, 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. Stevenage, which St Nicholas is part of, is one of England’s post-war new towns. Like the other new towns, Stevenage was planned with its own areas for industry and business, so workplaces sit close to the homes. Each has washrooms, kitchens and fire-rated joints to keep in order.
For landlords with property near Stevenage station, new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant. Managing a site like The Leys Primary and Nursery School? Then service openings in fire-resisting walls need checking after any refurbishment. Community buildings like All Saints Church are part of the picture too: service openings in its walls need the right fire-rated sealant, as in any building.
St Nicholas is about 1 mile north of Stevenage, in Hertfordshire. St Nicholas gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Our Hertfordshire coverage runs to 381 places, St Nicholas among them. There’s also a page for London, roughly 30 miles from St Nicholas.
Every address in SG1 and SG2 is covered for fire rated sealant. Whether your property is on York Road, Ripon Road and Drury Lane or a nearby road, we can help. Neighbouring places we cover for fire rated sealant include Rooks Nest (1 mile west), Pin Green (1 mile south-west), Chells (1 mile south-east), Stevenage (1 mile south) and Bedwell (1 mile south-west). We also work in nearby towns such as St Albans (14 miles south-west), Bishop's Stortford (15 miles east), Welwyn Garden City (9 miles south), Harpenden (10 miles south-west), Hitchin (4 miles north-west) and Hoddesdon (14 miles south-east).
Around St Nicholas
Locally, jobs take us to homes and businesses close to Church of Saint Nicholas and The Nobel School. The nearest railway station is Stevenage station, roughly 2 miles south-west. Nearby you will also find Wymondley Castle (2.7 miles north-west) and Stevenage Museum (1.8 miles south-west). For a walk, there’s Pryor's Wood.