Fire-rated sealing and fire stopping in North Heath, West Sussex
Fire-rated and intumescent sealing of service penetrations and linear gaps in North Heath and across West Sussex. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Seals that don’t match their tested detail
- Head-of-wall gaps with no fire seal
- Unsealed openings around new pipes and cables
Need fire stopping in North Heath?
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Fire stopping for commercial buildings in North Heath
Every service that crosses a compartment wall or floor leaves an opening, and that opening needs sealing to hold back fire and smoke. Our job is fitting fire-rated and intumescent sealant at those service penetrations, and along linear gaps, where it is the specified product. Each seal follows the manufacturer’s tested detail rather than guesswork. If you are dealing with fire-stopping items raised at inspection or handover and unsealed openings around new pipes and cables, we can help. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: in North Heath, that means joint design, primers and backing rod as standard.
Barn and farm-building conversions near places like North Heath often combine new partitions with old walls. A penetration seal only performs as tested if product, substrate, service, gap and depth all match the detail.
What our 12-month guarantee covers is the way we did the job: the preparation, the sealing and the tooling. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.
- Where
- North Heath (RH20)
- Region
- West Sussex
- Guarantee
- 12 months on our workmanship
- Price
- A fixed quote before we start
- Call
- 01277 525 020
- Last updated
- 3 November 2026
What happens if it’s left?
Fire stopping is a regular point raised at inspections and handover. Late discoveries can delay handover while openings are reopened and resealed, so earlier action pays back. Around North Heath, it’s better to renew all the failing joints at once, rather than one at a time. Send photographs of each area and we’ll quote for the lot.
Cost follows what’s involved: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a quote.
Why choose Mastic Doctor in North Heath
- Constructionline member
- 12-month guarantee on workmanship
- CHAS accredited
- One phone line for London, the South East and Scotland
Take a look at how commercial sealant jobs are priced or our accreditations and insurance.
What sets the cost
Before we quote, we look at:
- Which sealant the job calls for
- The total length or number of joints
- Induction, permit and paperwork requirements
- How accessible the joints are
Larger quantities, tricky access or phasing all shape the price. So do site requirements such as inductions and permits, along with the time of year for external work.
Details that help us quote
For an accurate fixed quote, we need a clear picture of the site. Useful things to include:
- Photos of the joints, close up and from further back
- The asbestos register, for older buildings
- How the joints are reached, and at what height
- Rough lengths or quantities, or drawings if you have them
Photos, drawings or a schedule of the joints and a fixed quote comes back to you. If the job needs a look first, we’ll arrange a site visit.
Fire stopping around North Heath: points for this area
Fire stopping of openings and penetrations in England falls under 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. Either way, we install the specified product to its tested detail. Central London is about 39 miles from North Heath. Office refits around the commuter belt bring new cabling through fire-resisting walls.
At a college such as Brinsbury College, 0.6 miles north of North Heath, checking penetration seals after summer M&E works is good practice. On a site such as Broomers Hill Business Park, which lies south-west of North Heath, every fit-out that runs new services through a compartment wall leaves penetrations to seal with the specified product.
North Heath is about 9 miles south-west of Horsham, in West Sussex. We cover commercial sites throughout North Heath, whether it’s a single job or part of a planned programme. North Heath is one of 373 places in West Sussex on our list for service penetrations. Brighton is covered too, some 18 miles away.
Postcode districts covered here: RH20. We cover commercial and managed buildings on Gay Street Lane and Stane Street and the roads nearby. Close to North Heath, our area also takes in Gay Street (1 mile south-east), Adversane (1 mile north), Codmore Hill (1 mile south-west), Broomershill (1 mile south) and Nutbourne (2 miles south). Bigger towns within reach include Crawley (15 miles north-east), Horsham (9 miles north-east), Worthing (11 miles south), Burgess Hill (15 miles east), Littlehampton (12 miles south) and Shoreham-by-Sea (14 miles south-east).
Near you in North Heath
The nearest railway station is Pulborough station, roughly 2.4 miles south-west of the centre. Open spaces near North Heath include The Mens.
For managing agents and facilities managers
Main contractors use us as their sealant subcontractor on new-build and refurbishment projects. Programme, specification and site rules come first, and our applicators hold CSCS cards.
Building owners and managing agents use us on sealant work across single buildings or whole portfolios around North Heath. Several sites can go on one quote, which keeps the paperwork simple.
Aftercare for building managers
Every sealant joint needs some looking after, and how long they last depends on how they’re treated. We suggest:
- Foam or ordinary sealant is never a fire-seal repair
- Put resealing into every M&E and fit-out package
- Leave fire sealant to cure fully before covering it
- Have penetrations checked while they can still be seen
Keep the product data and installation details with the building’s fire safety information. It makes later repairs much easier to match.
A simple record of seal locations and products helps. When a new service goes through, everyone knows which product and detail to match, and it helps at inspections.
Places near North Heath
More services for North Heath
Honest limits
Our job is the joint, not everything around it. On its own, sealant can’t deal with:
- Plastic pipes whose detail calls for a collar or wrap
- Designing or specifying fire stopping, which sits with the designer or fire engineer
- Fire risk assessments, a job for a competent assessor
If in doubt, phone 01277 525 020 or email drawings and photos and we’ll say what we think.
What we seal
- Joints between fire-resisting walls and floors
- Cable penetrations
- Pipe penetrations
- Small duct penetrations where the tested detail allows
- Service gaps in risers
- Linear gaps at wall heads
Our process
Where the site stays busy, we agree a sequence with your contact so the disruption stays in one area at once. Each area is protected, prepared and sealed before we move to the next. For a building around North Heath, tell us how to find it and who will meet us. Send that with the details and we will confirm the plan with the quote.
- First we confirm the product and tested details named in the specification.
- Openings are measured and grouped by detail.
- Improvised fillers and failed sealant are removed.
- Mineral wool or other backing is fitted where required.
- We gun the sealant in to the specified depth around each service and tool it.
- We walk the completed areas with you and confirm the records agreed at quote stage.
Preparing the site
- Tell us your opening times and when work is allowed
- Point out parking and an unloading spot
- Send asbestos survey details if the building is pre-2000
Get a fixed quote
If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price the work to it. Smaller jobs need nothing more than photos and a few notes.
Read more
North Heath: questions and answers
What happens to BS 476 references for fire stopping in North Heath?
References to BS 476 classes are being removed from Approved Document B from 2 September 2029, after which BS EN 13501-2 classification is the route, subject to transitional arrangements. The designer or fire engineer sets the specification, and we install the product to the manufacturer’s tested detail.
Is North Heath too small for you to travel to?
Not at all. North Heath is within our area. London and every South East county are within our area. Good photographs up front let us bring everything on the first visit.
How long do sealant joints last?
Nobody can honestly give a figure in years, since movement, weather, cleaning and use all affect it. Regular checks let you plan resealing before leaks or damage.
Do you have public liability insurance?
Yes. We are fully insured, including public liability cover.
Are you CHAS accredited?
Yes. We’re CHAS accredited and a Constructionline member, which helps with supplier vetting.
Will you come and look before quoting?
That depends on the size and complexity of the job. Straightforward work can often be priced from photographs and measurements, while larger or less clear jobs get a site visit first.
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. If anything suspect turns up, we stop until it’s tested.