West Sussex · England

Fire-rated sealant in Horsted Keynes, West Sussex

We cover Horsted Keynes for intumescent and fire-rated sealant around gaps, frames and service penetrations. Old sealant removed completely, joints prepared properly and a one-year guarantee.

  • Sealant items on a fire risk assessment action list
  • Gaps left after a refit or conversion
  • Linear gaps at the head of walls

Trusted fire rated sealant in Horsted Keynes

Fire rated sealant in Horsted Keynes, done properly

We can work through a building room by room or floor by floor. That record is useful for your files and for whoever looks at the building next. We work on plasterboard & masonry, service penetrations and pipe & cable gaps, and people most often call us about old fire sealant that has split or come away and standard silicone or caulk in a fire-stopping gap.

Work in a small place like Horsted Keynes is planned ahead, journey included, so the job can fit around bookings, guests or opening times where possible.

The work is covered for a year after we finish. If there’s a problem with it, please call 0345 464 0079 or email us.

Place
Horsted Keynes (RH17)
Region
West Sussex
Guarantee
One year on every job
Quote
A clear quote up front
Call
0345 464 0079
Page updated
26 October 2026
The Mr Mastic team in navy uniforms in front of three Mr Mastic vans

Common problems we fix in Horsted Keynes

If the sealant is too shallow, has the wrong backing or sits on a dusty surface, it is not installed as tested. Rushed fire stopping is common particularly when it was the last job before handover.

It’s worth asking for a quote if you see:

  • Linear gaps at the head of walls
  • Cracked or shrunken fire-rated sealant
  • Gaps flagged on a fire risk assessment
  • Unsealed gaps where pipes and cables go through a wall

If you look after a church, hall or community building such as St Giles' Church, gaps around pipes and cables are worth checking after any building work there.

What to look for in a quote

  • How the joint is cleaned and prepared
  • What happens if they find a problem under the old sealant
  • Whether they’re fully insured
  • Whether the sealant suits the joint

10 questions to ask before booking

What affects the cost of fire rated sealant

The price is agreed before any work begins. It takes into account:

  • The type of sealant required
  • How many rooms, windows or areas are involved
  • Whether the work is at height
  • The number and length of the joints

A few things move the cost up or down: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether we need extra access for height. We take all of that into account in your quote.

What we need to know

When you call or email, these details help:

  • Whether it has been sealed before
  • Photos by email, if that’s easy
  • The problem you’ve noticed
  • The rough size of the job

Want a quote for fire rated sealant? Please call 0345 464 0079 or send us an email with a few details. We’ll explain what we’d do and give you a clear quote before any work starts.

What we do, step by step

At the end, we look at the finished work together and explain the cure time. The visit itself 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. Somewhere like Horsted Keynes needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.

  1. We start with the survey or action list, checking the size and surfaces of every gap.
  2. Old or unsuitable sealant is cut out and the gap cleaned.
  3. Where the tested detail needs backing or fill, we fit it.
  4. The sealant goes in to the depth its detail sets, then it’s tooled off.
  5. Locations and products are noted so you have them on file.

Preparing for the visit

  • Mention any sign-in or site rules at work premises
  • Keep pets and children clear of the area while we work
  • Let us know about earlier repairs to the joints

How to get a quote

For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we will talk you through the work before giving you a price.

Get a quick quote

Advice

What we can’t put right

New sealant can’t fix everything, and we will tell you before any work starts. It won’t solve:

  • Certifying a building or signing off its fire safety
  • Doors that aren’t fire doors in the first place
  • Big openings where sealant alone isn’t the tested solution

If in doubt, call 0345 464 0079 or email us and we’ll say what we think before booking.

Joints and surfaces we work on

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

Your questions about fire rated sealant in Horsted Keynes

Is Horsted Keynes in your area for fire rated sealant?

Yes, Horsted Keynes is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job.

Do you work for landlords with property near Haywards Heath station?

Yes. We work for landlords and agents as well as householders, and several properties can be quoted together. You can ring 0345 464 0079 or email us with the details for a clear quote.

Is there any odour?

It depends on the product. Some products have a noticeable smell, others very little, and any smell fades as they cure.

Can I add another job to the visit?

Yes. Just list everything you need and we’ll quote it together.

Do you hold any approvals?

Yes. We’re approved under the ARBOMaster scheme.

Does someone need to be in?

For indoor joints, yes, someone needs to let us in. Once we’ve agreed the job, you don’t need to watch us work.

Is it messy?

We keep the work tidy. We protect what’s around the joints, and we clear up when we’re done.

Will you assess my building’s fire safety?

No. We follow the requirements from your assessor, designer or building control, and apply each product to its tested details.

For landlords and businesses

A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.

We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.

Fire rated sealant in Horsted Keynes: 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.

For landlords with property near Haywards Heath station, new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant. If you look after a building such as St Giles CofE Primary School, service openings in fire-resisting walls need checking after any refurbishment.

Horsted Keynes is about 4 miles north-east of Haywards Heath, in West Sussex. Horsted Keynes gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Horsted Keynes is one of 371 places in West Sussex we cover for fire rated sealant. We also work in Crawley, around 9 miles away.

Here we cover the RH17 postcode area for fire rated sealant. Streets in the area include Station Road, Rixons Orchard and Leighton Road. Neighbouring places we cover for fire rated sealant include Danehill (1 mile east), Birchgrove (2 miles north-east), Highbrook (2 miles north-west), Chelwood Common (2 miles east) and Furner's Green (2 miles south-east). Within a short drive, we also cover Crawley (9 miles north-west), Horsham (13 miles west), Haywards Heath (4 miles south-west), Burgess Hill (7 miles south-west), East Grinstead (6 miles north) and Broadfield (9 miles north-west).

Local landmarks in Horsted Keynes

Around Horsted Keynes, our work takes us to homes and buildings near The Green Man pub, among other places. For rail, the closest station is Haywards Heath station, roughly 4 miles south-west of the centre. Nearby you’ll also find Waterbury Castle (under half a mile north-west) and Princess Royal Hospital (4.1 miles south-west). The countryside around Horsted Keynes includes Blunts Wood and Paiges Meadow.

Map of Horsted Keynes © OpenStreetMap contributors

How to look after the new joints

After the cure time, these simple habits help:

  • Look in service cupboards and ceiling voids from time to time
  • Store the list of sealed gaps with your building paperwork
  • Check whether a sealant can be painted before decorating over it
  • Get damaged fire seals looked at promptly

Include fire stopping in your regular building checks. Look for cracks, gaps or sealant that has been cut or pulled out and get them seen to.

Open gaps don’t only matter in a fire: they also let noise, draughts and sometimes pests through. Sealing them early helps on every front.

Surface by surface

Service penetrations

Wherever a service goes through a fire-resisting wall or floor, there’s a gap around it. We seal it with a product tested for that service and gap size.

Door frames

A door can only do its job if the gap behind its frame is sealed too. We fill it with a fire-rated product suited to the materials either side.

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