Hertfordshire · England
Nup End Green Fire Rated Sealant
Intumescent and fire-rated sealant around gaps, frames and service penetrations in Nup End Green, with a 12-month guarantee on every job. Call for a quick quote.
- Open joints along the top of partitions
- Cracked or shrunken fire-rated sealant
- Gaps filled with a product that isn’t fire-rated
DIY versus a professional finish
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is.
About our fire rated sealant in Nup End Green
A fire seal relies on being installed the way it was tested: correct depth, correct backing and a product suited to the surfaces. That is the part we focus on. Typical jobs include damaged fire sealant left by other trades and open gaps behind door architraves, on service penetrations, door frames and plasterboard & masonry.
Somewhere as small as Nup End Green, commercial jobs tend to be pubs, holiday lets, farm buildings or halls rather than offices. They all have washrooms, kitchens and service openings that need the right sealant.
The work is covered for a year after we finish. If there’s a problem with it, please phone 0345 464 0079 or send us an email.
- Location
- Nup End Green (SG3)
- Region
- Hertfordshire
- Cover
- A year, on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Nup End Green: your questions answered
Can you do fire rated sealant in Nup End Green?
Yes, Nup End Green is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or send us an email and let us know what needs doing, and we will give you a clear quote.
Do you work for landlords with property near Knebworth station?
Yes. We work for letting agents and landlords as well as householders. You can phone 0345 464 0079 or drop us an email with the details for a clear quote.
Is it worth trying it myself?
Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Do you do fire sealant around door frames?
Yes. We seal the gap between the frame and the wall with a suitable fire-rated product, to the product’s details. The door leaf and its hardware need a door specialist.
Will there be a smell?
It depends on the product. Some products have a noticeable smell, others very little.
Can you quote for more than one area?
Yes, we can. More than one area can be quoted together.
Do you hold any approvals?
Yes. We are an ARBOMaster approved applicator, the approved applicator scheme for Arbo sealants.
Is it messy?
Very little: the area around the joints is protected first, and we tidy up before we go.
Towns and villages near Nup End Green
Other services in Nup End Green
Leave it or put it right?
Doing it once, properly, beats doing it twice. If the details weren’t followed, the seal may need redoing once someone inspects it. Around Nup End Green, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference.
Why us?
- More than 20 years in sealant work
- Approved under the ARBOMaster scheme
- Domestic, commercial and hotel work
- Anti-fungal sanitary silicone in wet areas
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Ask which product was used before you paint
- Plan fire stopping into any work that goes through walls or floors
- Keep general-purpose foam and caulk away from fire-stopping gaps
- Make resealing part of every contractor’s brief
Keep the record we give you with the building’s fire safety documents. It saves time at the next inspection or assessment.
Open gaps don’t only matter in a fire: noise, draughts and even pests can come through too. Dealing with them early helps with all of these.
For landlords and businesses
Landlords and letting agents in Nup End Green can book us as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
What affects the cost of fire rated sealant
The quote reflects the job in front of us. We take into account:
- How many rooms, windows or areas are involved
- Which sealant suits the joint
- How much there is to do
- Whether the work is at height
The cost depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. You will have a clear quote before any work starts.
What to tell us for a quote
There’s no need for technical detail. It helps if you can tell us:
- Where the job is, and your postcode
- Photos by email, if that’s easy
- Roughly how big the job is
- How we’d reach the joints
To get a quote, ring 0345 464 0079 or drop us an email with the location and a short description of the problem. We’ll give you a clear price before any work starts.
What happens on the day
On the day, there’s very little for you to do. Point us to the joints and we’ll get on with it. The job generally takes a few hours for a handful of gaps, and longer for a whole building. Somewhere as small as Nup End Green, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- 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.
- Backing or fill is fitted where the product’s tested detail calls for it.
- Fire-rated or intumescent sealant is applied to the right depth and tooled.
- We record the locations and products used for your records.
Getting ready for the visit
- Keep pets and children clear of the area while we work
- Clear items away from the joints we’re working on
- Where the joints are inside, avoid wetting them before we arrive
Ask for a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is.
Related advice
Workplaces and buildings in Nup End Green
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.
If you let a flat or house near Knebworth station, fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through. For buildings such as Church of St Mary and St Thomas, gaps around pipes and cables are worth checking after any building work there.
Nup End Green is about 3 miles south-west of Stevenage, in Hertfordshire. Across the SG3 area, our applicators can take on fire rated sealant. 381 places in Hertfordshire are on our list, large and small. We also work in London, around 26 miles away.
Work in SG3 works the same way as everywhere else we cover. Neighbouring places we cover for fire rated sealant include Driver's End (1 mile west), Old Knebworth (1 mile north-east), Rableyheath (1 mile south-east), Pottersheath (1 mile south-east) and Codicote (1 mile south-west). Within a short drive, we also cover Hemel Hempstead (13 miles south-west), Stevenage (3 miles north-east), St Albans (9 miles south-west), Welwyn Garden City (5 miles south), Harpenden (6 miles south-west) and Hitchin (6 miles north).
Local landmarks in Nup End Green
Around Nup End Green, our work takes us to homes and buildings near Robin Hood And Little John Public House and Knebworth Park and the streets around them. For rail, the closest station is Knebworth station, roughly 1.4 miles east. Other landmarks nearby include Benington Castle (4.9 miles north-east) and Lister Hospital (4.1 miles north). Open spaces near Nup End Green include Mardley Heath.
How the job changes by surface
Service penetrations
Wherever a service goes through a fire-resisting wall or floor, there’s a gap around it. The sealant is chosen for what passes through and how wide the gap is.
Flats and HMOs
Conversions generally leave a mix of old and new service holes. The gaps on your list are sealed with a fire-rated product and the locations noted.