Hertfordshire · England

Fire Rated Sealant in Heronsgate

Professional fire rated sealant in and around Heronsgate, with old sealant always removed completely and a one-year guarantee.

  • Fire seals that have cracked with movement
  • Unsealed gaps where pipes and cables go through a wall
  • Gaps where walls meet ceilings or slabs

Book fire rated sealant in Heronsgate

Fire rated sealant in Heronsgate, done properly

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. Common call-outs are for sealant items on a fire risk assessment action list and gaps around pipes and cables through fire-resisting walls, on plasterboard & masonry, door frames and linear gaps.

If you have holiday lets, a converted barn used for business or a community building near Heronsgate, washroom and kitchen sealant and any fire-rated joints need the same attention as anywhere.

Each job carries a 12-month guarantee.

Where
Heronsgate (WD3)
Wider area
Hertfordshire
Guarantee
One year on every job
Quotes
A clear price before any work starts
Telephone
0345 464 0079
Page updated
26 October 2026
Eleven members of the Mr Mastic team standing in front of branded white vans

Quotes for fire rated sealant in Heronsgate

Call for a quick quote. The main things that affect it are:

  • How many rooms, windows or areas are involved
  • Any mould that needs treating
  • Working hours on commercial sites
  • Access and height

We do not show prices on the website, because the cost depends so much on the job itself. Call for a quick quote and we’ll talk you through it.

What to tell us for a quote

A few details help us give you an accurate quote. When you get in contact, it helps to mention:

  • Pictures of the joints, sent by email
  • The problem you’ve noticed
  • Whether it’s a home or a business
  • Access, such as stairs, a lift or height

It all starts with a short chat. Describe the problem, the location and the size of the job. Whenever you are ready, call 0345 464 0079 or drop us an email.

Fire rated sealant around Heronsgate

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.

If you look after a church, hall or community building such as St John, older buildings that have had new heating or wiring often have service gaps worth checking. Rented homes near Chorleywood station change hands often, and new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant. For site and facilities teams at buildings such as Chorleywood Primary School, gaps opened by contractors for new cabling are a common finding in schools and offices.

Heronsgate is about 1 mile south-west of Chorleywood, in Hertfordshire. If you need fire rated sealant in Heronsgate, please ring 0345 464 0079 or email us for a quick quote. We cover Hertfordshire from our Crawley base, Heronsgate included. 381 places in Hertfordshire are on our list, from the larger towns to small villages. You can also see our page for London, roughly 21 miles from Heronsgate.

Postcode districts we cover here for fire rated sealant: WD3. If you need fire rated sealant at a property on Long Lane, Stag Lane and Halifax Road or anywhere close by, we can help. If you are just outside Heronsgate, we cover Chorleywood (1 mile north-east), Maple Cross (1 mile south), Horn Hill (1 mile south), Chalfont Common (2 miles south-west) and West Hyde (2 miles south). Within a short drive, we also cover Watford (5 miles east), Hemel Hempstead (8 miles north), St Albans (11 miles north-east), Harpenden (14 miles north-east), Hatfield (15 miles north-east) and Borehamwood (11 miles east).

Near you in Heronsgate

Locally, jobs take us to homes and businesses close to Rickmansworth Aquadrome, among other places. For rail, the closest station is Chorleywood station, roughly 1 mile north of the centre. Nearby you will also find Chiltern Open Air Museum (1 mile west) and Harefield Hospital (2.8 miles south-east). Not far away are Chorleywood Common and Tumbling Bay.

Map of Heronsgate © OpenStreetMap contributors

For landlords and businesses

In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.

From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.

Surface by surface

Service penetrations

Pipes, cables and ducts passing through fire-resisting walls and floors each leave a gap. We seal it with a product tested for that service and gap size.

Plasterboard walls

In plasterboard walls, the condition of the board edge matters. Loose material is removed so the sealant has a firm edge.

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.

If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.

How the visit works

The work is kept neat and contained to the area we’re working on, so you can get on with your day. Expect the work to take from a few hours to a few days, depending on the number of gaps and the access, and we explain the cure time before we leave. For a village or hamlet like Heronsgate, 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.

  1. We go through the gaps on your list or survey and check each one’s size and substrate.
  2. Anything that isn’t fit for the job comes out, and the gap is cleaned.
  3. Where the tested detail needs backing or fill, we fit it.
  4. Fire-rated or intumescent sealant is applied to the right depth and tooled.
  5. Locations and products are noted so you have them on file.

Getting ready for the visit

  • Try not to wet indoor joints just before the visit
  • Let us know if you’ve seen damp or leaks
  • Let us know about stairs, lifts or work at height

Getting a quote

Asking for a quote is easy: let us know what needs doing and where and its rough size. A few pictures by email make the job easier to understand, and we’ll come back to you with a quote.

Get a quick quote

Advice

Why deal with it now?

Items left open on a fire risk assessment tend to come back at the next review. Getting them done and written up means you can show the action was taken. Where a wall is exposed, as many are in small places like Heronsgate, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.

Leaving a failed joint normally makes the job bigger, not smaller, because water and mould keep working on it. If you’re not sure whether it needs doing, call 0345 464 0079 or email us for an honest opinion and a quote.

Why book with us

  • Anti-fungal silicone where joints get wet
  • 20+ years of sealant experience
  • 4.9 on Google from 180+ five-star reviews
  • We’re fully insured

See what affects the cost or customer reviews.

Your questions about fire rated sealant in Heronsgate

Can you help a landlord with a rental near Chorleywood station?

Yes. We work for landlords and agents as well as householders. You can ring 0345 464 0079 or send us an email with the details for a clear quote.

Can you do fire rated sealant in Heronsgate?

Yes, Heronsgate is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or drop us an email with a few details of the job, and we’ll give you a clear quote.

How long does the job take?

A typical job takes from a few hours to a few days, depending on the number of gaps and the access, including preparation and clearing up. We will confirm how long when we quote.

Is there a guarantee?

Yes. Every job comes with a one-year guarantee.

Is it worth trying it myself?

You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. If it doesn’t work out, we can redo it.

Will you assess my building’s fire safety?

No. We follow the requirements from your assessor, designer or building control and install to the manufacturer’s details.

Do I have to be there?

We need access to the joints, so we will agree that with you when we book. Indoors, that usually means someone at home.

What sealant do you use?

Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We explain the product when we quote.

Honest limits

We won’t take on work that won’t last, so here’s what sealant cannot put right:

  • Assessing a building’s fire safety
  • Fire doors that need new seals, closers or hardware
  • Large holes that need a different fire-stopping system

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

What we seal

  • Plasterboard & masonry
  • Flats & HMOs
  • Door frames
  • Pipe & cable gaps
  • Service penetrations
  • Linear gaps
20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job