Hertfordshire · England
Great Wymondley Fire Rated Sealant
Professional fire rated sealant in and around Great Wymondley, with old sealant always removed completely.
- Gaps around pipes and cables through fire-resisting walls
- New service routes left unsealed after building work
- Fire seals that have cracked with movement
How we handle fire rated sealant in Great Wymondley
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. Typical jobs include seals cut through by electricians, plumbers or data installers and standard silicone or caulk in a fire-stopping gap, across door frames, linear gaps and plasterboard & masonry.
Somewhere as small as Great Wymondley, 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.
All of our work is guaranteed for twelve months.
- Where
- Great Wymondley (SG4)
- Wider area
- Hertfordshire
- Cover
- One year on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Landlord and commercial work in Great Wymondley
For anyone letting property in or around Great Wymondley, jobs at different addresses can go on one quote. Send us the addresses and the work at each, and photos by email help.
Hotels need rooms back in use, so the work can be planned room by room. We’ve worked in hotels as well as homes and businesses.
The process
Once we are on site, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. Most jobs then take from a few hours to a few days, depending on the number of gaps and the access. Somewhere as small as Great Wymondley, 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.
- 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.
- Locations and products are noted so you have them on file.
Before we arrive
- Keep children and pets away from the work area
- Tell us about access, such as stairs, a lift or high-level joints
- Tell us about any water getting in
How to get a quote
Need a quote? Please ring 0345 464 0079 or drop us an email with a few details. We’ll explain what we’d do and give you a clear price before any work starts.
Advice
Quotes for fire rated sealant in Great Wymondley
Every job gets its own quote. This is what makes a difference:
- Access and height
- Working hours on commercial sites
- Any mould that needs treating
- The product the joint needs
Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
Asking for a quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- The address or postcode of the job
- What’s wrong with the joints now
- The rough size of the job
- Access, such as stairs, a lift or height
We quote each job on its own. Simply ring 0345 464 0079 or drop us an email and describe the job, and photos are welcome.
How the job changes by surface
Door frames
The gap between a door frame and the wall around it needs sealing as well as the door itself. We fill it with a fire-rated product suited to the materials either side.
Service penetrations
Different services need different details: metal pipes, cables and plastic pipes aren’t treated the same. Each one is sealed to the product’s tested detail, and tell you if sealant alone isn’t the right fix.
Also near Great Wymondley
What else we do in Great Wymondley
What fire rated sealant looks like in Great Wymondley
Great Wymondley has hotels and guest accommodation in and around it. For hotels, a room-by-room programme keeps most rooms in use while the work goes on. 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, 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.
Community buildings like Church of St Mary the Virgin are part of the picture too: service openings in its walls need the right fire-rated sealant, as in any building. Schools such as Wymondley Junior Mixed and Infant School are buildings too, and fire-stopping around service openings should be restored whenever new services go in. For landlords with property near Hitchin station, new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant.
Great Wymondley is about 2 miles east of Hitchin, in Hertfordshire. Every kind of property in Great Wymondley is covered for fire rated sealant, old or new, large or small. The work is guaranteed for a year. We cover 381 towns and villages across Hertfordshire, from the larger towns to small villages. There’s also a page for London, roughly 31 miles from Great Wymondley.
We cover every part of SG4 for fire rated sealant. Streets in the area include Graveley Road, Hitchin Road and Arch Road. We also cover the places around Great Wymondley: Little Wymondley (1 mile south), Poets Estate (1 mile north-west), Graveley (1 mile south-east), Titmore Green (1 mile south) and Willian (1 mile north-east). We also work in nearby towns such as Stevenage (3 miles south-east), St Albans (14 miles south), Welwyn Garden City (10 miles south), Harpenden (10 miles south-west), Hatfield (12 miles south) and Hertford (12 miles south-east).
Local landmarks in Great Wymondley
Typical jobs here are in homes near Hitchin Girls' School, The Green Man pub and Kingshott School and the streets around them. The nearest railway station is Hitchin station, about 1.4 miles north-west. A little further out are North Hertfordshire Museum (2 miles west) and Lister Hospital (1.6 miles south-east). Not far away are Purwell Ninesprings.
What sealant work cannot fix
Some problems need a builder, plumber or other trade rather than us:
- Walls or floors that weren’t built to resist fire
- Certifying a building or signing off its fire safety
- Big openings where sealant alone isn’t the tested solution
If you’re not sure, just phone 0345 464 0079 or drop us an email and we will give you a straight answer.
What we seal
- Service penetrations
- Door frames
- Pipe & cable gaps
- Linear gaps
- Flats & HMOs
- Plasterboard & masonry
Great Wymondley questions
Will you come out to Great Wymondley?
Yes, we do. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you take on hotel work around Great Wymondley?
Yes, hospitality work, including hotels, is part of what we do. Work can be planned room by room, and out-of-hours working can be arranged.
Can you give us a record of the work?
Yes. Locations and products are written up when we finish. Tell us if your assessor needs it in a particular format.
Does someone need to be in?
We need access to the joints, so we’ll agree that with you when we book. For inside work, that normally means someone being in.
What sealant do you use?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.
How long does fire rated sealant take?
A typical job takes from a few hours to a few days, depending on the number of gaps and the access. Your quote will say how long we expect yours to take.
Can you seal over the old sealant?
No. Fresh sealant does not stick to old sealant, and anything trapped underneath, including mould and water, stays there. It all has to come out first.
Can ordinary silicone be used in a fire-stopping gap?
No. A gap that needs fire stopping needs a tested fire-rated product, installed to its details.
How to look after the new joints
So the new joints stay in good condition:
- Store the list of sealed gaps with your building paperwork
- Never patch a fire seal with standard sealant
- Allow for resealing whenever new services are run
- Keep pictures of seals that will be hidden
Let contractors know where fire stopping has been done, and ask them to reseal anything they cut through. A lot of damaged fire stopping comes from later work.
A gap left open in a fire-resisting wall or floor lets smoke spread in ways the building wasn’t designed for. Closing it is usually a straightforward job.
Why act early in Great Wymondley
For some gaps, sealant is not the right answer and another system is needed. Large holes, cable bundles and plastic pipes can call for batts, collars or wraps. We will say so if a gap needs something other than sealant. Older cottages and farmhouses around Great Wymondley can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
The cost reflects the work involved, not guesswork. That’s why we ask a few questions first and give you a clear price before work begins.
Why choose Mr Mastic in Great Wymondley
- An ARBOMaster approved applicator
- Anti-fungal sanitary silicone in wet areas
- 20+ years of sealant experience
- Neat joints and a tidy finish
See how sealant jobs are priced and our reviews.