Hertfordshire · England

Hunsdonbury Fire Rated Sealant

Our applicators work in Hunsdonbury on intumescent and fire-rated sealant around gaps, frames and service penetrations. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.

  • Gaps left after a refit or conversion
  • Open holes round services passing through fire walls
  • Joints picked up in a fire-stopping survey

Trusted fire rated sealant in Hunsdonbury

Different surfaces, different methods

Flats and HMOs

Flats and HMOs rely on fire separation between homes and the common parts. We seal the gaps your assessor has identified room by room.

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 we flag any that need another system.

Fire rated sealant in Hunsdonbury, done properly

Where services or frames pass through a fire-resisting wall or floor, the gap around them needs a fire-rated seal. We apply intumescent and fire-rated sealants to the manufacturer’s tested details for each gap. If you have open holes round services passing through fire walls and sealant items on a fire risk assessment action list, we can put it right.

If you have holiday lets, a converted barn used for business or a community building near Hunsdonbury, the washrooms, kitchens and any fire-rated joints need the same care as a big site.

Big or small, you get the same one-year guarantee.

Location
Hunsdonbury (SG12)
Region
Hertfordshire
Guarantee
A year, on every job
Price
Quoted before any work starts
Call
0345 464 0079
Page updated
26 October 2026
Mr Mastic applicators lined up beside the company vans, one holding a sealant gun

FAQs for Hunsdonbury

Do you cover smaller places like Hunsdonbury?

Yes, we do. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.

Can you do fire rated sealant in Hunsdonbury?

Yes. We work across London and the South East, and Hunsdonbury is part of that. You can call 0345 464 0079 or send us an email and let us know what needs doing.

Is it OK to seal over old sealant?

No. We remove every bit of old sealant first.

Can you work in occupied buildings?

Yes. We regularly work in flats, HMOs, schools and offices while they’re in use and we plan access around the people using them. Out-of-hours work can be arranged.

Can I add another job to the visit?

Yes, we can. Several rooms, windows or areas can go on one quote.

Is there a guarantee?

Yes, always. Each job is guaranteed for twelve months, wherever you are.

Will you assess my building’s fire safety?

No. Your fire risk assessor, designer or building control decides that. Our job is applying the sealant to their specification.

Do you remove the old sealant?

Yes. All of the old material is cut out and the joint cleaned before resealing.

Keeping the joints in good condition

After the cure time, these simple habits help:

  • Store the list of sealed gaps with your building paperwork
  • Do not fill fire-stopping gaps with ordinary foam or silicone
  • Include fire stopping when you schedule refits
  • Photograph sealed gaps before they’re covered up

Follow the cure time we give you before decorating over the sealant. Not every fire-rated sealant takes paint.

Any job that breaks through a wall or ceiling should include resealing. Catching it then saves a separate visit later.

Landlord and commercial work in Hunsdonbury

From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.

Landlords and letting agents in Hunsdonbury can book us as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.

What we do, step by step

On the day, there’s very little for you to do. Show us the job and we’ll take it from there. The job generally takes anything from a few hours to several days, depending on how many gaps there are from start to finish. In a small place like Hunsdonbury, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.

  1. We plan the order of work and access, floor by floor or flat by flat.
  2. Old, damaged or unsuitable sealant is removed.
  3. Gaps are cleaned of dust and loose material.
  4. We apply and tool the sealant to the product’s tested detail.
  5. Locations and products are written up and any gaps unsuitable for sealant are flagged.

Preparing for the visit

  • Tell us about any previous sealing or DIY attempts
  • Tell us if parking is tricky
  • On commercial sites, let us know about site rules

How to get a quote

Want a quote for fire rated sealant? Please call 0345 464 0079 or send us an email and tell us about the job. We’ll explain what we’d do and send you a clear quote before work begins.

Get a price

Related advice

Commercial buildings in Hunsdonbury

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 work to the specification you’re given, installing the product to its tested details.

Community buildings like St Francis Chapel are part of the picture too: service openings in its walls need the right fire-rated sealant, as in any building. For landlords with property near Roydon station, fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through.

Hunsdonbury is about 3 miles north-west of Harlow, in Hertfordshire. From the centre of Hunsdonbury to the outskirts, fire rated sealant is available for homes and businesses alike, from flats and houses to offices and hotels. Hunsdonbury is one of 381 towns and villages in Hertfordshire we cover. Chelmsford is on our list too, around 19 miles away.

Postcode districts we cover here for fire rated sealant: SG12. If you need fire rated sealant at a property on Acorn Street, Great Oak Court and Nine Ashes or anywhere close by, we can help. Other places close to Hunsdonbury include Hunsdon (1 mile north), Widford (1 mile north), Nether Street (2 miles north), Wareside (2 miles north-west) and Babbs Green (2 miles north-west). We also work in nearby towns such as Stevenage (13 miles north-west), Bishop's Stortford (6 miles north-east), Welwyn Garden City (11 miles west), Hoddesdon (4 miles south-west), Cheshunt (8 miles south-west) and Hatfield (12 miles west).

Around Hunsdonbury

Typical jobs here are in homes near The Fox & Hounds pub and Roydon Primary School. For rail, the closest station is Roydon station, roughly 1.9 miles south of the centre. A little further out are Princess Alexandra Hospital (2.5 miles south-east) and Henry Moore Studios and Gardens (2.8 miles north-east). For a walk, there’s Hunsdon Mead.

Map of Hunsdonbury © OpenStreetMap contributors

When it isn’t the sealant

It helps to know what we cannot do too:

  • Problems with the door itself rather than the gap around the frame
  • Big openings where sealant alone is not the tested solution
  • Construction that does not provide fire resistance on its own

If in doubt, ring 0345 464 0079 or send us an email and we will say what we think before booking.

Surfaces we seal

  • Plasterboard & masonry
  • Service penetrations
  • Linear gaps
  • Pipe & cable gaps
  • Flats & HMOs
  • Door frames

What affects the cost of fire rated sealant

For a quick quote, just ask. The main things that affect it are:

  • Any working-time requirements on site
  • How easy the joints are to reach
  • The size of the job
  • The product the joint needs

Doing several joints on one visit is generally more efficient than separate visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.

What to tell us for a quote

You don’t need to know the technical terms. Just tell us:

  • Where the property is
  • Any access issues, like height or stairs
  • What the problem is, such as mould, gaps, leaks or cracking
  • If it’s domestic, commercial or a hotel

The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and add pictures by email if you can.

Do you need fire rated sealant in Hunsdonbury?

Door frames are a common weak spot. The architrave hides the gap between frame and wall, so it’s easy to leave unsealed when doors are changed.

Signs it’s time to call us include:

  • Seals cut through by electricians, plumbers or data installers
  • Gaps flagged on a fire risk assessment
  • Cracked or shrunken fire-rated sealant
  • Gaps around pipes and cables through fire-resisting walls

If you look after a building such as Hunsdon Junior Mixed and Infant School, service openings in fire-resisting walls need checking after any refurbishment.

Comparing quotes

  • How hidden problems are handled
  • Which colour the sealant will be
  • Whether all the old sealant comes out first
  • Whether VAT is included

Our hiring checklist

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job