Hertfordshire · England
Fire-rated sealant in Hexton, Hertfordshire
We cover Hexton for intumescent and fire-rated sealant around gaps, frames and service penetrations. Old sealant removed completely, joints prepared properly.
- Gaps where walls meet ceilings or slabs
- Unsealed gaps where pipes and cables go through a wall
- Ordinary sealant used where a fire-rated product was needed
Can I do it myself?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
About our fire rated sealant in Hexton
Bigger jobs can be worked through in stages, flat by flat or floor by floor, with each location and product recorded. That record is useful for your files and for whoever looks at the building next. Typical jobs include open holes round services passing through fire walls and fire stopping disturbed by later work, on plasterboard & masonry, service penetrations and pipe & cable gaps.
Somewhere as small as Hexton, 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.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Location
- Hexton (SG5)
- Region
- Hertfordshire
- Cover
- 12 months on all our work
- Quotes
- A clear price before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Common problems we fix in Hexton
Buildings are refitted and reconfigured over the years. Conversions to flats and HMOs, and office refits, create new walls and new routes for services, with gaps to match.
Signs it’s time to call us include:
- New service routes left unsealed after building work
- Fire seals that have cracked with movement
- Joints picked up in a fire-stopping survey
- Open joints along the top of partitions
For buildings such as Church of St Faith (Church of England), older buildings that have had new heating or wiring often have service gaps worth checking.
Questions to ask before you book
- What happens if the job turns out different
- When the joint can take water or movement
- Which sealant they’ll use, and why
- Is the old sealant removed completely?
For landlords and businesses
If you manage several properties in or around Hexton, jobs at different addresses can go on one quote. Send us the addresses and the work at each.
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. We can quote for more than one property at once.
Fire rated sealant in Hexton: local notes
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 Harlington station, any gap left by new services in shared walls should be closed with a fire-rated product. Managing a site like Hexton Junior Mixed and Infant School? Then fire-stopping around service openings should be restored whenever new services go in.
Hexton is in Hertfordshire. Anywhere in SG5, our applicators can take on fire rated sealant. Hexton is one of 381 places in Hertfordshire where we work. For nearby work, see our London page (34 miles or so).
Here we cover the SG5 postcode area for fire rated sealant. Other places close to Hexton include Pegsdon (1 mile east), Apsley End (2 miles north-east), Hanscombe End (2 miles north), Shillington (3 miles north-east) and Pirton (3 miles east). We also work in nearby towns such as Hemel Hempstead (15 miles south), Stevenage (10 miles south-east), St Albans (15 miles south), Welwyn Garden City (14 miles south-east), Harpenden (10 miles south) and Hitchin (5 miles east).
Local landmarks in Hexton
Typical jobs here are in homes near Recreation Ground, among other places. Hexton’s nearest station is Harlington station, roughly 4.5 miles west of the centre. Nearby you’ll also find Ravensburgh Castle (0.9 miles south-west) and John Dony Field Centre (3.9 miles south). Not far away are Butts Hill and Barton Gravel Pit.
How the visit works
Before we leave, we go over the finished joints with you. The work normally takes from a few hours to a few days, depending on the number of gaps and the access, depending on how much there is to do. In a small place like Hexton, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- Access to each area is agreed so the work can run in order.
- Old, damaged or unsuitable sealant is removed.
- Dust and loose debris are cleaned from each gap.
- We apply and tool the sealant to the product’s tested detail.
- We record what was done and flag anything that needs a different system.
Getting ready for the visit
- Let us know if you’ve seen damp or leaks
- Mention any sign-in or site rules at work premises
- Tell us about access, such as stairs, a lift or high-level joints
Getting a quote
For a quote, ring 0345 464 0079 or email us and tell us where the job is and what the problem looks like. You will have a clear quote before we start.
Read more
When it is not the sealant
We will always be straight with you, so here’s what sealant cannot fix:
- Assessing a building’s fire safety
- Large holes that need a different fire-stopping system
- Certifying a building or signing off its fire safety
If in doubt, ring 0345 464 0079 or drop us an email and we will say what we think.
Joints and surfaces we work on
- Flats & HMOs
- Linear gaps
- Door frames
- Pipe & cable gaps
- Service penetrations
- Plasterboard & masonry
Towns and villages near Hexton
What else we do in Hexton
Hexton: your questions answered
Is Hexton in your area for fire rated sealant?
Yes, Hexton is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or email us with a few details of the job, and we will send you a clear quote.
I let a flat near Harlington station. Can you help?
Yes, rental work is part of what we do. You can call 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before we start.
Will you leave a mess?
No. The area is protected while we work and cleaned up afterwards.
Are you an approved applicator?
Yes. Mr Mastic is an ARBOMaster approved applicator, and we are fully insured.
Can I choose the sealant colour?
We will suggest a colour to suit the surroundings, from white and clear to greys and other shades. The product needed can limit the range.
How long will you be here?
It depends on the size of the job, but most jobs take anything from a few hours to several days, depending on how many gaps there are. We will tell you when we quote.
Do you remove the old sealant?
Yes. All of the old material is cut out and the joint cleaned before applying anything new.
Is standard sealant good enough for a fire gap?
No. Ordinary silicone, caulk or foam isn’t tested as fire stopping. If it’s been used, we remove it and use the right product.
What the job involves on each surface
Flats and HMOs
Conversions generally leave a mix of old and new service holes. We seal the ones on your specification with a tested product.
Plasterboard walls
Holes in plasterboard are often cut roughly for services. Gaps that are too big for sealant alone need a different detail and we will flag it.
Keeping the joints in good condition
A little care helps the new joints last. We recommend:
- Look in service cupboards and ceiling voids from time to time
- Report cracked or damaged seals as soon as you notice them
- Tell trades working in the building that fire seals must be put back
- Check whether a sealant can be painted before decorating over it
Any fire seal that’s cut or drilled needs resealing to its tested detail. New services through a sealed wall should include fire stopping in the plan.
A gap left open in a fire-resisting wall or floor lets smoke spread in ways the building wasn’t designed for. Sealing it early is a simple step to take.