Fire-rated sealing and fire stopping in High Cross, West Sussex
Our CSCS-carded applicators take on fire-rated and intumescent sealing of service penetrations and linear gaps in High Cross. Send photos or drawings for a fixed quote.
- Unsealed openings around new pipes and cables
- Head-of-wall gaps with no fire seal
- Improvised or mixed-product fire seals
Fire stopping in High Cross
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Fire stopping in High Cross, done properly
Penetration seals are fire tested to BS EN 1366-3 and linear joint seals to BS EN 1366-4 and the results are classified to BS EN 13501-2. A rating such as EI 60 only holds when the product is installed as it was tested. So our job is to reproduce that arrangement faithfully. We work on cable penetrations, small duct penetrations where the tested detail allows and joints between fire-resisting walls and floors, and what we’re called in for most is seals that don’t match their tested detail and openings found when ceilings come down for a refit. Searching for sealant specialists in High Cross? We have been sealing commercial buildings since 2005.
Around smaller places like High Cross, penetration seals come up in schools, halls, pubs with rooms, care homes and farm buildings used as offices. If sealant is what the specification names, we install it around the services exactly as the maker’s detail sets out.
Every job is signed off with a 12-month guarantee. It’s a plain promise: if the work we did fails within twelve months, we return to fix it.
- Where
- High Cross (BN6)
- Wider area
- West Sussex
- Guarantee
- A 12-month guarantee
- Quote
- A fixed quote before we start
- Telephone
- 01277 525 020
- Updated
- 3 November 2026
Looking after the joints
Regular inspection catches problems early. In particular:
- Record which product was used where
- Look above ceilings when tiles are lifted for other jobs
- Check with the data sheet before painting over fire sealant
- Keep general-purpose fillers away from compartment walls
Give the sealant its full cure time before ceilings, boxing or decoration go over it. Some fire-rated sealants accept paint and some don’t.
Keep a register of where seals are and what they are made of. When a new service goes through, everyone knows which product and detail to match, which saves guesswork.
Common questions from High Cross clients
Is High Cross too small for you to travel to?
Not at all. High Cross is within our area. We work across Greater London and the South East. Good photos up front let us bring everything on the first visit.
Would you work within a site like The Dene Hospital?
Yes. We work in healthcare settings as well as offices and schools. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.
What if there’s asbestos in the old mastic?
The duty to manage asbestos sits with the building’s dutyholder, so for older buildings we ask for the asbestos register first. Work pauses if suspect material is found, until it has been tested.
Is the work guaranteed?
Yes. Workmanship is guaranteed for 12 months.
Do you take on small jobs?
Small jobs are welcome alongside larger packages. Photos and a description are enough to start.
Do you have public liability insurance?
Yes. We’re fully insured, and the certificate can go with your quote.
What does an EI 60 rating mean?
Penetration seals are tested to BS EN 1366-3 and linear joint seals to BS EN 1366-4. Classification follows BS EN 13501-2. The rating applies to the product as tested.
For managing agents and facilities managers
Housing associations and managing agents often need work done across blocks and communal areas. We phase the work so people keep access, and each stage is agreed with your contact.
Hotels, schools, healthcare sites, offices and retail units book us directly too. We plan around the way the building is used, so the building keeps working while we do.
Doing it in-house
Redoing a failed joint typically costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.
Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.
Nearby places to High Cross
Also in High Cross
Why it’s worth doing now in High Cross
Sealing behind the M&E trades area by area beats a sweep at the end. Openings are visible, access is open and nothing has to be taken down, and the right detail can be checked at the time. Around High Cross, it’s better to renew all the failing joints at once, rather than one at a time. Send photos of each area and we will quote for the lot.
No two sites price the same: the joint sizes, the specified product, access and working hours each have a bearing. A fixed quote follows once we understand the job.
What you get with us
- Constructionline member for supplier checks
- Work to your specification and the manufacturer’s guidance
- A fixed quote before work starts
- Old sealant cut out, never sealed over
Take a look at our cost guide or our accreditations.
Fire stopping in High Cross: the local picture
For England, the fire stopping of penetrations is dealt with in Approved Document B. From 2 September 2029, BS 476 references are being taken out of Approved Document B, leaving BS EN 13501-2 classification as the route, subject to the Government’s transitional arrangements. We install whatever has been specified, to the product’s tested detail. At about 39 miles from central London, High Cross is within reach of the capital. Offices around the capital are refitted often, and the cabling that follows can breach fire-resisting walls, and the gaps need sealing with the specified product.
Large healthcare estates like The Dene Hospital (2.9 miles north-east of High Cross) change their services often, so penetration seals are worth checking after M&E work. In a building such as The Parish Church of St Bartholomew, any service penetration through a fire-resisting wall should be sealed to the specified detail.
High Cross is about 4 miles west of Burgess Hill, in West Sussex. Across the BN6 postcode area, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. We work across 373 places in West Sussex, large and small. We also cover Brighton, some 9 miles away.
Commercial sites across BN6 are covered. Close to High Cross, our area also takes in Albourne (1 mile south-east), Albourne Green (1 mile south-east), Albourne Street (1 mile south-east), Blackstone (1 mile south-west) and Twineham (2 miles north). Nearby towns on our patch include Crawley (12 miles north), Horsham (10 miles north-west), Worthing (11 miles south-west), Haywards Heath (7 miles north-east), Burgess Hill (4 miles east) and Shoreham-by-Sea (8 miles south).
Near you in High Cross
The nearest railway station is Hassocks station, roughly 3.4 miles east. A little further out are The Dene Hospital (2.9 miles north-east) and Clayton Castle (3.9 miles south-east). Not far away are Wolstonbury Hill and Woods Mill.
From enquiry to sign-off
Before any cutting starts, the area is protected: masking tape along the joint edges and sheeting over anything nearby. On site, the work usually takes longer where risers, ceiling voids or occupied floors have to be worked through in sequence, and we clear our waste as we work. For a building around High Cross, tell us how to find it and who will meet us. Send that with the details and we’ll confirm the plan with the quote.
- We read the specification, drawings or penetration schedule you send and ask about anything unclear.
- Every penetration is compared with its detail: wall or floor type, service, gap size and depth.
- Anything that doesn’t belong in the opening, such as expanding foam or general-purpose filler, is removed.
- Mineral wool or other backing goes in wherever the detail asks.
- We apply the specified sealant to the depth and around the services as the detail shows.
- Openings that need a collar, wrap, batt or other product are flagged to you rather than filled with sealant.
Preparing the site
- Move anything stored against the joints
- Send any specification or drawings in advance
- Warn occupants and staff about the work
Getting a fixed quote
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, phone 01277 525 020 or email drawings and photos.
Related advice
Signs you need fire stopping in High Cross
Linear gaps fail where a fire-resisting wall meets a slab, soffit or another wall. Deflection and building movement can open these gaps, and a product not tested for that movement may crack. The tested detail for a linear joint states the width and movement it covers.
Typical triggers for a call:
- Head-of-wall gaps with no fire seal
- Improvised or mixed-product fire seals
- Service penetrations left open after M&E works
- Builders’ foam or ordinary silicone in compartment walls
Holiday works at schools like Albourne CofE Primary School often leave service openings to seal before pupils return.
What your quote should include
- Will failed sealant be removed rather than covered?
- Are they CHAS accredited or on Constructionline?
- Their public liability cover
- Do they follow the manufacturer’s priming guidance?