West Sussex · England

Fire-rated sealant in Crawley, West Sussex

Our applicators work in Crawley on intumescent and fire-rated sealant around gaps, frames and service penetrations. Old material cut out, joints cleaned and sealed neatly and a one-year guarantee.

  • Open gaps behind door architraves
  • Sealant items on a fire risk assessment action list
  • Fire seals that have cracked with movement

Fire rated sealant near Crawley

What we are called out for in Crawley

Much fire stopping is hidden: in ceiling voids, service risers and behind boxing. Because nobody sees it, gaps go unnoticed until an assessor or surveyor looks.

The most common problems we see are:

  • Ordinary sealant used where a fire-rated product was needed
  • Gaps left after a refit or conversion
  • Cracked or shrunken fire-rated sealant
  • Joints picked up in a fire-stopping survey

For site and facilities teams at buildings such as Three Bridges Junior School, service openings in fire-resisting walls need checking after any refurbishment.

Comparing quotes

  • Who turns up on the day
  • What insurance they hold
  • How the joint is cleaned and prepared
  • How the colour is chosen

10 questions to ask before booking

How we handle fire rated sealant in Crawley

In flats, HMOs, offices and schools, fire stopping is often disturbed by later work. A new cable run or a replaced pipe can leave an open hole behind. We seal them with a product tested for that kind of gap. Common call-outs are for standard silicone or caulk in a fire-stopping gap and gaps around pipes and cables through fire-resisting walls, on service penetrations, door frames and pipe & cable gaps.

Landlords with flats and shared houses in Crawley often need both kinds of work: resealing bathrooms and kitchens, and fire-rated sealant where pipes pass through walls. We can quote for a single property or a whole portfolio.

A 12-month guarantee comes with the work, just as it does everywhere we cover.

The Mr Mastic team in navy uniforms in front of three Mr Mastic vans
Location
Crawley (RH10, RH11, RH12, RH6)
Region
West Sussex
Guarantee
A year, on every job
Quotes
A clear price before we start
Phone
0345 464 0079
Page updated
26 October 2026

How the visit works

Once we’re on site, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. After that, the work takes from a few hours to a few days, depending on the number of gaps and the access. For homes and businesses in busier parts of Crawley, parking needs a little planning. For flats, mention stairs, lifts and shared entrances as well.

  1. Access to each area is agreed so the work can run in order.
  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. We record what was done and flag anything that needs a different system.

Preparing for the visit

  • Keep pets and children clear of the area while we work
  • Mention any parking rules near the property
  • Clear items away from the joints we are working on

Get a quote

Want a quote for fire rated sealant? Please ring 0345 464 0079 or email us with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.

Get a quick quote

Advice

What affects the quote in Crawley

Some jobs are bigger than they look, and some smaller. What affects the quote:

  • The type of sealant required
  • How much there is to do
  • How easy the joints are to reach
  • Any mould that needs treating

The cost depends on how much there is to do, how hard the old material is to remove and access to the work. We give a clear quote before we start, so you know where you stand.

Asking for a quote

What to tell us when you ask for a quote:

  • Roughly how big the job is
  • Where the job is, and your postcode
  • Whether it has been sealed before
  • Whether it’s a home or a business

For fire rated sealant in Crawley, phone 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.

Work for landlords, hotels and businesses

Letting agents often deal with us directly. Tell us the address, the job and how access works and we will give you a quote.

Housing providers, facilities teams and property managers book us too in Crawley and across West Sussex. Several sites can go on one quote.

What fire rated sealant looks like in Crawley

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. Crawley was built as one of England’s post-war new towns. Crawley 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.

Community buildings like Friary Church of St Francis and St Anthony are part of the picture too: service openings in its walls need the right fire-rated sealant, as in any building. Rented homes near Crawley station change hands often, and any gap left by new services in shared walls should be closed with a fire-rated product.

Crawley is about 27 miles south of London, in West Sussex. Wherever you are in the RH10 postcode area, we cover fire rated sealant for homes and businesses. Our West Sussex coverage runs to 371 places, Crawley among them.

Postcode districts we cover here for fire rated sealant: RH10, RH11, RH12 and RH6. Streets in the area include Station Road, Queens Square and High Street. Crawley sits on or near the A23 and A264, so getting to you is simple. We also cover the places around Crawley: Southgate (1 mile south-west), Tilgate (1 mile south-east), West Green (1 mile north), Three Bridges (1 mile east) and Langley Green (1 mile north). Further out, we also cover Horsham (7 miles south-west), Haywards Heath (9 miles south-east), Burgess Hill (11 miles south), East Grinstead (8 miles east), Billingshurst (13 miles south-west) and Roffey (5 miles south-west). As one of the bigger places in West Sussex, Crawley has homes, rented property and businesses of every kind.

What’s near Crawley

In Crawley, that means homes and buildings near Tilgate Park, St Wilfrid's Catholic School and St Francis of Assisi Catholic Primary School. There’s a railway station in Crawley itself: Crawley station. Other landmarks nearby include Crawley Hospital (0.5 miles north-west) and County Mall (within half a mile north-east). Open spaces near Crawley include Tilgate Lake.

Map of Crawley © OpenStreetMap contributors

What sealant work can’t fix

Some problems need a builder, plumber or other trade rather than us:

  • Construction that does not provide fire resistance on its own
  • Certifying a building or signing off its fire safety
  • Deciding what fire stopping a building needs

If you’re not sure, just call 0345 464 0079 or send us an email and we’ll give you a straight answer before you book.

Where we work in Crawley

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

Aftercare tips

A little care helps the new joints last. We recommend:

  • Look in service cupboards and ceiling voids from time to time
  • Allow for resealing whenever new services are run
  • Do not paint over fire sealant until it has cured
  • Ask every contractor to reseal any fire stopping they disturb

Look at the sealed gaps as part of your routine walk-rounds. Watch for cracking, gaps or seals that have been disturbed and have them put right.

A flagged gap shouldn’t wait for the next assessment. Get it sealed and recorded so the item can be closed.

Should I try it myself first?

If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.

Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.

FAQs for Crawley

Do you cover Crawley for fire rated sealant?

Yes. We work across London and the South East, and Crawley is part of that. Just call 0345 464 0079 or send us an email with a few details of the job.

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

Yes, rental work is part of what we do. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we’ll give you a clear price.

Does someone need to be in?

If the work is inside, we need someone to let us in. Once we have agreed the job, you don’t need to watch us work.

Do you work in flats, HMOs and commercial buildings?

Yes, whether the building is a school, an office, flats or an HMO, and whether it’s in use or not. Tell us how the building is used and we will plan around it.

Is it messy?

No. The area is protected while we work and cleaned up afterwards.

Can I do it myself?

It depends on the job. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.

Do you remove the old sealant?

Yes, every time. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.

Will there be a smell?

Some sealants have a smell while they cure, but it fades. Ventilation helps.

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