Hertfordshire · England
Poynders End Fire Rated Sealant
Intumescent and fire-rated sealant around gaps, frames and service penetrations for homes and businesses in Poynders End and across Hertfordshire. Fully insured, ARBOMaster approved and guaranteed for a year.
- Old fire sealant that has split or come away
- Ordinary sealant used where a fire-rated product was needed
- Open joints along the top of partitions
Landlords, agents and businesses in Poynders End
For anyone letting property in or around Poynders End, several properties can be quoted together. Just tell us the addresses and what each one needs, and pictures by email help.
In hotels, rooms out of use cost money, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
How we handle fire rated sealant in Poynders End
Fire-rated sealant closes the gaps around pipes, cables and frames where they pass through a fire-resisting wall or floor. Each gap is sealed to the product maker’s tested detail for its size and substrate, with a record of the products and locations if you need one. If you’re dealing with gaps where walls meet ceilings or slabs and joints picked up in a fire-stopping survey, we can put it right, whatever the surface.
If you have holiday lets, a converted barn used for business or a community building near Poynders End, 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.
- Place
- Poynders End (SG4)
- Region
- Hertfordshire
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Your questions about fire rated sealant in Poynders End
Will you come out to Poynders End?
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.
Can you help a landlord with a rental near Stevenage station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can phone 0345 464 0079 or drop us an email with the details for a clear quote.
Do you have insurance?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
Where do you work from?
Our base is in Crawley, West Sussex, and we work across South East England, London and Scotland.
Is there any odour?
Some sealants have a smell while they cure, which fades as it sets. Opening a window helps.
Do I have to be there?
That depends on where the joints are. For work indoors, someone needs to let us in.
Do you certify the fire stopping?
We don’t certify fire stopping or quote ratings. Our part is installing the specified product to its tested details and giving you a record of where it went.
Is it OK to seal over old sealant?
No, and we never do. It may look fine at first, but the new layer lifts away from the old one. The old sealant has to come out completely.
DIY sealant or a professional job?
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Workplaces and buildings in Poynders End
In England, the Regulatory Reform (Fire Safety) Order 2005 requires a fire risk assessment for workplaces and for the common parts of blocks of flats, 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.
Letting a property close to Stevenage station? Then fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through. Managing a site like Preston Primary School? Then gaps opened by contractors for new cabling are a common finding in schools and offices.
Poynders End is about 3 miles south of Hitchin, in Hertfordshire. For fire rated sealant in and around Poynders End, please call 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover Hertfordshire. Our Hertfordshire coverage runs to 381 places, Poynders End among them. There’s also a page for London, roughly 29 miles from Poynders End.
Jobs for fire rated sealant in SG4 is quoted and booked the same way as anywhere else. We also cover Temple Dinsley (1 mile south-west), Preston (1 mile west), Langley End (1 mile south-east), Little Almshoe (1 mile north-east) and St Ibbs (1 mile north). Further out, we also cover Hemel Hempstead (13 miles south-west), Stevenage (4 miles east), St Albans (11 miles south), Welwyn Garden City (8 miles south-east), Harpenden (7 miles south-west) and Hitchin (3 miles north).
Local landmarks in Poynders End
Locally, jobs take us to homes and businesses close to The Red Lion Public House, among other places. The closest station to Poynders End is Stevenage station, about 2.8 miles east. Nearby you’ll also find Wymondley Castle (2.8 miles north-east) and North Hertfordshire Museum (2.8 miles north). Not far away are Purwell Ninesprings and Markham's Hill.
What we are called out for in Poynders End
Many open fire-stopping gaps are made after the building is finished. New cables, pipes and data runs go through walls and ceilings and the hole they leave does not always get resealed.
It’s worth asking for a quote if you see:
- Damaged fire sealant left by other trades
- Linear gaps at the head of walls
- Door frames with gaps between frame and wall
- Ordinary sealant used where a fire-rated product was needed
For buildings such as Church of St Martin, gaps around pipes and cables are worth checking after any building work there.
What your quote should include
- Who turns up on the day
- What the cure time is
- Whether the sealant suits the joint
- The length of the guarantee
Looking after it afterwards
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Flag any open gap you spot round a pipe or cable
- Tell trades working in the building that fire seals must be put back
- Include fire stopping when you schedule refits
- Keep photos of seals that will be hidden
Avoid covering a sealed gap with anything that is not part of the tested detail. Repairs should use a matching fire-rated product. Ask us if you’re not sure which product was used.
An open gap isn’t only a fire issue: they also let noise, draughts and sometimes pests through. Sealing them early helps on every front.
What affects the cost of fire rated sealant
You will get a clear quote before we start. It’s based on:
- Which sealant suits the joint
- Any working-time requirements on site
- Any mould that needs treating
- The size of the job
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs. Call for a quick quote and we will go through it with you.
What to tell us for a quote
There’s no need for technical detail. It helps if you can tell us:
- Pictures of the joints, sent by email
- How many joints, rooms or windows are involved
- If it’s domestic, commercial or a hotel
- If someone has resealed it before
We quote each job on its own. Simply call 0345 464 0079 or send us an email and describe the job, and photos are welcome.
What we do, step by step
You don’t need to clear the whole room or building before we come, only the area right around the joints. We protect the rest, and the job takes anything from a few hours to several days, depending on how many gaps there are for a typical job. For a village or hamlet like Poynders End, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We start with the survey or action list, checking the size and surfaces of every gap.
- We remove any old or unsuitable filler and clean the gap.
- We put in whatever backing or fill the product detail specifies.
- We apply the fire-rated or intumescent sealant to the specified depth and tool it.
- Locations and products are noted so you have them on file.
Getting ready for the visit
- Mention any tricky access
- Let us know about parking restrictions
- For business premises, tell us about site rules or sign-in
Ask for a quote
Want a quote for fire rated sealant? Please phone 0345 464 0079 or drop us an email and tell us about the job. We’ll explain what we’d do and give you a clear quote before work begins.
Related advice
Nearby places to Poynders End
What else we do in Poynders End
Why it’s worth doing now in Poynders End
Squirting in whichever sealant is nearest doesn’t make a fire seal. Fire-rated products are tested in set gap sizes, depths and substrates, so both the product and the method matter. In a small place like Poynders End, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. Your quote takes all of that into account.
Why us?
- Rated 4.9 stars on Google
- Domestic, commercial and hotel work
- 20+ years of sealant experience
- Tidy, careful work
Read our cost guide or our reviews.