Hertfordshire · England
Coleman Green Fire Rated Sealant
Intumescent and fire-rated sealant around gaps, frames and service penetrations for homeowners, landlords and businesses in Coleman Green. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Door frames with gaps between frame and wall
- Holes left by a change of layout
- Gaps where walls meet ceilings or slabs
When to call us in Coleman Green
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 looks sealed, but it isn’t fire-rated.
Keep an eye out for any of the following:
- Damaged fire sealant left by other trades
- Gaps where walls meet ceilings or slabs
- Unsealed gaps around fire door frames
- Gaps around pipes and cables through fire-resisting walls
If you look after a building such as Beech Hyde Primary School and Nursery, gaps opened by contractors for new cabling are a common finding in schools and offices.
Before you book anyone
- Whether you can choose the colour
- How the joint is cleaned and prepared
- Whether the sealant suits the joint
- How much experience the applicator has
About our fire rated sealant in Coleman Green
A gap around a door frame, a linear joint at the head of a wall and a hole round a pipe are each sealed differently. We check the size and the substrate before choosing the product, then the sealant goes in to the depth the product’s details set. We work on plasterboard & masonry, linear gaps and service penetrations, and people most often call us about seals cut through by electricians, plumbers or data installers and gaps flagged on a fire risk assessment.
For holiday lets, converted business premises or a community building near Coleman Green, the washrooms, kitchens and any fire-rated joints need the same care as a big site.
There’s a 12-month guarantee on every job, whatever its size.
- Where
- Coleman Green (AL4)
- Wider area
- Hertfordshire
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What happens on the day
At the end, we look at the finished work together and explain the cure time. The visit itself usually takes anything from a few hours to several days, depending on how many gaps there are, depending on how much there is to do. Somewhere as small as Coleman 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.
- We remove any old or unsuitable filler and clean the gap.
- Where the tested detail needs backing or fill, we fit it.
- Fire-rated or intumescent sealant is applied to the right depth and tooled.
- Locations and products are noted so you have them on file.
Preparing for the visit
- Mention if the joints have been sealed before
- Move anything stored near the joints
- Let us know about parking restrictions
Ask for a quote
If you’re in Coleman Green and need fire rated sealant, call 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and you will get a clear quote before we start.
Advice
What affects the quote in Coleman Green
The price is agreed before any work begins. It takes into account:
- Whether old sealant or filler has to be cut out
- How many rooms, windows or areas are involved
- Whether there’s mould to deal with
- Which sealant suits the joint
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please phone 0345 464 0079 or drop us an email.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Whether it’s a home or a business
- If someone has resealed it before
- Where the job is, and your postcode
- How many joints, rooms or windows are involved
We don’t publish a price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To get started, phone 0345 464 0079 or drop us an email.
How to look after the new joints
Aftercare is simple:
- Don’t paint over fire sealant until it has cured
- Allow for resealing whenever new services are run
- Keep general-purpose foam and caulk away from fire-stopping gaps
- Store the list of sealed gaps with your building paperwork
Look at the sealed gaps as part of your routine walk-rounds. Look for cracks, gaps or sealant that has been cut or pulled out and get them seen to.
Any job that breaks through a wall or ceiling should include resealing. Doing it at the time avoids leaving gaps behind.
Your questions about fire rated sealant in Coleman Green
Can you help a landlord with a rental near Welwyn Garden City 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 work begins.
Is Coleman Green in your area for fire rated sealant?
Yes. Our work covers London and the South East, and Coleman Green is part of that. Just phone 0345 464 0079 or drop us an email with a few details of the job.
What sealant do you use?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference.
How much does fire rated sealant cost in Coleman Green?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. You will get a clear quote before we start.
Where is Mr Mastic based?
We’re based in Crawley, and we cover South East England, London and all of Scotland.
Are you fully insured?
Yes. Mr Mastic is fully insured.
Will you assess my building’s fire safety?
No, assessment is not something we do. Once you have a specification or action list from your assessor or designer, we can quote for the fire-rated sealant items.
Can you do several jobs on one visit?
Yes, and it often makes sense. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
Different surfaces, different methods
Plasterboard walls
Service holes in plasterboard are often rough and oversized. Gaps that are too big for sealant alone need a different detail, and we will tell you.
Masonry and concrete
Core-drilled and broken-out holes in concrete are often irregular. We check the gap size around the service against the product’s tested range.
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. Older cottages and farmhouses around Coleman Green can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
Why Coleman Green customers choose us
- Quality sealants from Arbo and Everbuild
- Sanitary silicone with an anti-fungal additive in wet areas
- Tidy, careful work
- ARBOMaster approved applicator
Take a look at how sealant jobs are priced and our reviews.
Towns and villages near Coleman Green
What else we do in Coleman Green
Workplaces and buildings in Coleman 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, which is often where open fire-stopping gaps are first noticed. We work to the specification you are given, installing the product to its tested details.
If you let a flat or house near Welwyn Garden City station, new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant.
Coleman Green is about 3 miles north-west of Hatfield, in Hertfordshire. For fire rated sealant in and around Coleman Green, it’s easy to get a quote: please ring 0345 464 0079 or email us. We’re based in Crawley and cover Hertfordshire, Coleman Green included. Coleman Green is one of 381 places in Hertfordshire we cover. We also work in London, around 22 miles away.
Jobs for fire rated sealant in AL4 works the same way as everywhere else we cover. You’ll find streets such as Coleman Green Lane and Darblay Close. We also cover the places around Coleman Green: Cooper's Green (2 miles south), Lemsford (2 miles east), Jersey Farm (2 miles south-west), Stanborough (2 miles east) and Smallford (3 miles south). Further out, we also cover Watford (11 miles south-west), Hemel Hempstead (8 miles west), Stevenage (9 miles north-east), St Albans (4 miles south-west), Welwyn Garden City (4 miles east) and Harpenden (3 miles north-west).
Local landmarks in Coleman Green
Typical jobs here are in homes near Sandringham School and John Bunyan pub and the streets around them. The closest station to Coleman Green is Welwyn Garden City station, about 3.1 miles east of the centre. A little further out are Howard Centre (3.1 miles east) and The Bunker at Hatfield Police Station (2.8 miles south-east). The countryside around Coleman Green includes Wheathampstead Local Nature Reserve and Verulamium Lake.
Work for landlords, hotels and businesses
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. We can quote for more than one property at once.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we will give you a quote.