Hertfordshire · England

Leverstock Green Fire Rated Sealant

Intumescent and fire-rated sealant around gaps, frames and service penetrations in Leverstock Green, with a 12-month guarantee on every job. Call for a quick quote.

  • Fire seals that have cracked with movement
  • Gaps filled with a product that isn’t fire-rated
  • Fire stopping disturbed by later work

Fire rated sealant near Leverstock Green

Fire rated sealant around Leverstock Green

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’re given, installing the product to its tested details. Hemel Hempstead, which Leverstock Green is part of, is one of England’s post-war new towns. Hemel Hempstead was planned with its own industrial and business areas, so there are offices, units and workplaces not far from home. Each has washrooms, kitchens and fire-rated joints to keep in order.

Rented homes near Apsley station change hands often, and fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through. Community buildings like Church of Holy Trinity are part of the picture too: gaps around pipes and cables are worth checking after any building work there.

Leverstock Green is about 1 mile east of Hemel Hempstead, in Hertfordshire. Every kind of property in Leverstock Green can book us for fire rated sealant. Every job comes with our 12-month guarantee. Across Hertfordshire, we cover 381 places, Leverstock Green among them. For nearby work, see our London page, about 23 miles away.

Here we cover the HP2 and HP3 postcode area for fire rated sealant. Whether your property is on Caro Lane, Field Road and Tewin Road or anywhere close by, our applicators can take on the job. We also cover the places around Leverstock Green: Westwick Row (1 mile east), Bennetts End (1 mile south-west), Adeyfield (1 mile north-west), Hemel Hempstead (1 mile west) and Highfield (1 mile north-west). Further out, we also cover Watford (6 miles south), Stevenage (15 miles north-east), St Albans (4 miles east), Welwyn Garden City (11 miles east), Harpenden (6 miles north-east) and Hitchin (15 miles north-east).

Near you in Leverstock Green

Locally, jobs take us to homes and businesses close to Longdean School. Leverstock Green’s nearest station is Apsley station, about 1.8 miles south-west. Nearby you will also find Hypocaust Museum (3.3 miles east) and Village Arcade St Albans (4 miles east). Green spaces nearby include Long Deans and Verulamium Lake.

Map of Leverstock Green © OpenStreetMap contributors

About our fire rated sealant in Leverstock Green

Landlords, managing agents and facilities teams use us for the sealant items on a fire risk assessment. If you share the list, we can quote for the gaps that need fire-rated sealant. If you have old fire sealant that has split or come away and joints picked up in a fire-stopping survey, we can put it right.

If you run a pub, café, guest house or shop in or near Leverstock Green, the washrooms and kitchen need the same attention as a big site.

Every job is covered by a one-year guarantee, wherever you are in Hertfordshire.

Eleven members of the Mr Mastic team standing in front of branded white vans
Location
Leverstock Green (HP2, HP3)
Region
Hertfordshire
Guarantee
One year on every job
Quotes
A clear quote up front
Phone
0345 464 0079
Updated
26 October 2026

Leave it or put it right?

Waiting for the next refit can leave a gap open for years. Sealing the gap now is a contained job on its own that does not depend on other work. Around Leverstock Green, water from a failed joint in an older home can soak into timber and plaster, which is far harder to put right than the sealant itself.

What it costs depends on the size of the job, how much old material has to come out and how easy the joints are to reach. We give a clear quote before work begins.

Why book with us

  • Trusted Arbo and Everbuild sealants
  • 4.9 on Google from 180+ five-star reviews
  • A 12-month guarantee on all work
  • Sanitary silicone with an anti-fungal additive in wet areas

Take a look at how sealant jobs are priced or what customers say.

How the visit works

Most of a good job is in the preparation, so that is where we spend the time. Joints are cleaned back and dried before anything new goes in. In total, it normally takes a few hours for a handful of gaps, and longer for a whole building. Parking around Leverstock Green is generally easier than in a town centre, but mention any lanes, gates or long drives. For outside work, side access and the height of the joints help us plan.

  1. We plan the order of work and access, floor by floor or flat by flat.
  2. We take out any damaged or unsuitable sealant.
  3. Dust and loose debris are cleaned from each gap.
  4. The fire-rated or intumescent sealant is applied and tooled to the tested detail.
  5. Locations and products are written up and any gaps unsuitable for sealant are flagged.

Preparing for the visit

  • Mention any parking rules near the property
  • Try not to wet indoor joints just before the visit
  • For business premises, tell us about site rules or sign-in

Getting 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. You will know what we plan to do, and what it will cost, before any work begins.

Get a price

Advice

Leverstock Green: your questions answered

Do you work for landlords with property near Apsley station?

Yes, rental work is part of what we do. You can ring 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before we start.

Do you cover smaller places like Leverstock Green?

Yes. Leverstock Green is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.

Is it OK to seal over old sealant?

No. We remove every bit of old sealant first.

Will there be a smell?

Possibly a little. It fades as the sealant cures.

Can you match the sealant colour?

We help you choose a colour that suits. The product needed can limit the range.

What information do you need?

Let us know what needs doing and where, plus photos if you have them. We’ll ask anything else we need to know.

Where are you based?

We’re a Crawley-based firm, with over 20 years’ experience. Our area covers South East England, London and Scotland.

Are you an approved applicator?

Yes. We’re an ARBOMaster approved applicator, the approved applicator scheme for Arbo sealants.

What affects the quote in Leverstock Green

Your quote is based on your job. We take into account:

  • When we can work, for business premises
  • The type of sealant required
  • How easy the joints are to reach
  • Mould in or behind the old joints

Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs. Ask us for a quote and we’ll go through it with you.

Asking for a quote

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

  • Roughly how big the job is
  • If it’s domestic, commercial or a hotel
  • Where the job is, and your postcode
  • The problem you’ve noticed

The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email photos if that’s easy.

How the job changes by surface

Plasterboard walls

Holes in plasterboard are often cut roughly for services. Where a hole is bigger than the sealant’s tested range, it needs another approach and we will flag it.

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.

DIY sealant or a professional job?

Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.

A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.

What sealant work cannot fix

In fairness, there are a few things sealant won’t fix:

  • Fire risk assessments, which need a qualified assessor
  • Sign-off of the building, which sits with building control or your assessor
  • Construction that does not provide fire resistance on its own

Not sure which it is? You can phone 0345 464 0079 or send us an email and we’ll tell you honestly.

Where we work in Leverstock Green

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

When to call us in Leverstock Green

In some buildings the gap was filled with the wrong thing in the first place: general-purpose foam, everyday silicone or caulk where a fire-rated seal was needed. It looks sealed, but it isn’t fire-rated.

Common reasons people contact us include:

  • Standard silicone or caulk in a fire-stopping gap
  • Unsealed gaps around fire door frames
  • Gaps around pipes and cables through fire-resisting walls
  • Damaged fire sealant left by other trades

If you look after a building such as Leverstock Green Church of England Primary School, gaps opened by contractors for new cabling are a common finding in schools and offices.

What your quote should include

  • How the colour is chosen
  • How long the guarantee is
  • What preparation is included
  • What insurance they hold

Choosing a sealant specialist

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