Fire-rated sealing and fire stopping in Merston, West Sussex
We carry out fire-rated and intumescent sealing of service penetrations and linear gaps in Merston and the surrounding area. Send details for a fixed quote.
- Seals disturbed by maintenance and left open
- Fire-rated sealant that has cracked or shrunk back
- Expanding foam used as fire stopping
Fire stopping for businesses in Merston
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Fire stopping in Merston
We are commercial sealant applicators, CHAS accredited and a Constructionline member, with CSCS-carded applicators on site. We don’t hold a third-party fire-stopping installer certificate, and we won’t pretend otherwise. We install the specified fire-rated sealant to its tested detail, and our workmanship carries a 12-month guarantee. Site teams most often ask us about unsealed penetrations discovered above suspended ceilings and snag lists that include open service penetrations, on cable penetrations, small duct penetrations where the tested detail allows and joints between fire-resisting walls and floors. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: in Merston, that means joint design, primers and backing rod as standard.
For a smaller site near Merston, we plan to do all the penetrations in one go, so send the specification and photographs first. Design and sign-off belong to the designer or building control; we install what’s specified.
A 12-month guarantee applies to all our work. If an installation problem shows up, ring 01277 525 020 or email us and we will arrange a return visit.
- Place
- Merston (PO20)
- Region
- West Sussex
- Cover
- A 12-month guarantee
- Quotes
- Quoted before any work starts
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
How the quote is worked out
Your fixed quote is built from the real scope. It allows for:
- Access and working height
- How much existing material needs removing
- Location, for remote and island sites
- The site’s rules and procedures
What a job costs comes down to the quantity of joints, what has to come out first and how the joints are reached. Call for a fixed quote once you have the details.
What to include in your enquiry
Whether it’s one area or a whole building, these details speed things up:
- Clear photos of the problem areas
- How the joints are reached, and at what height
- Any specification or named product
- The site address and postcode
Send details, get a quote, we seal, guaranteed: that’s how every job runs. The first step is to phone 01277 525 020 or use the quote form with what you know.
How a job runs
Inspect, seal, sign off: every visit follows that pattern. We inspect the joints and confirm what’s in scope, then the work is carried out to the specified product and detail, and the job ends with a walk round and sign-off. Smaller jobs around Merston can be grouped with others nearby. A fixed quote is given before anything starts.
- We read the specification, drawings or penetration schedule you send and raise any questions before we price.
- On site, each opening is checked against the tested detail it is meant to follow.
- 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.
- If an opening needs something other than sealant, we tell you instead of improvising.
What we need from you
- Share your working hours and any access restrictions
- Point out any areas we must not close
- Point out parking and an unloading spot
Get a fixed quote
Specifications, drawings and tender packages are welcome with any enquiry, and we’ll price the work to it. Smaller jobs need nothing more than photos and a few notes.
Read more
Compartments and services around Merston
Merston lies roughly 54 miles out from central London. Business park offices in the commuter belt are refitted as tenants change, and each fit-out adds services through compartment walls. For England, the fire stopping of penetrations is dealt with in Approved Document B. References to the older BS 476 classes are being removed from it from 2 September 2029, after which the European classification, BS EN 13501-2, is the route, subject to transitional arrangements. We install whatever has been specified, to the product’s tested detail.
Office fit-outs on sites such as Littlemeads Business Centre (1.4 miles north of Merston) add cabling and pipework through fire-resisting walls, and fire-rated sealant goes in where the specification calls for it. Colleges such as West Sussex Alternative Provision College (to the west of Merston) add IT and services as courses change, and each new penetration through a fire-resisting wall needs sealing with the specified product.
Merston is about 3 miles south-east of Chichester, in West Sussex. Our applicators travel to Merston for work on service penetrations, handled exactly as we handle every other area. 373 places across West Sussex fall within our area, including Merston. Our Portsmouth page has more on work in that area.
We cover the PO20 postcode districts. We also cover Runcton (1 mile south-west), Colworth (1 mile east), Oving (1 mile north), North Mundham (1 mile west) and Lagness (1 mile south). Nearby towns on our patch include Worthing (15 miles east), Bognor Regis (3 miles south-east), Chichester (3 miles north-west), Selsey (6 miles south), Littlehampton (9 miles east) and Rustington (10 miles east).
What’s near Merston
Around Merston, our work takes us to commercial buildings near Chichester High School For Girls. The nearest railway station is Chichester station, roughly 2.3 miles west. Well-known places in the area include The Chichester City Museum (2.3 miles north-west) and St Richard's Hospital (2.3 miles north-west).
FAQs: Merston
Is Littlemeads Business Centre, near Merston, within your area?
Yes. Estates, retail parks and business parks around Merston, Littlemeads Business Centre among them, are all within reach. Photos and a short description are enough for a first look.
What does the BS 476 change mean for fire-rated sealant in Merston?
Approved Document B loses its BS 476 references from 2 September 2029, and BS EN 13501-2 becomes the route, subject to transitional arrangements. Our part doesn’t change: the specified product, to its tested detail.
Is it fine to apply new sealant on top of old?
No. We cut the old material out and clean the joint back before sealing, since fresh sealant will not bond reliably to aged material.
Can you follow the specification on our project?
Yes. Include it with the drawings when you ask for a quote, and the quote will be based on it.
How do you choose the sealant?
If the job is specified, we follow the specification. If not, we choose for the movement, the surfaces and the conditions, in line with the manufacturer’s guidance.
How long does a job like this take?
It depends on the scope, though a typical visit typically takes longer where risers, ceiling voids or occupied floors have to be worked through in sequence. Larger or phased jobs take longer, and we’ll give you a timescale with the quote.
Are you insured?
Yes. We are fully insured, and the certificate can go with your quote.
Places near Merston
Also in Merston
Surface by surface
Plastic pipes
Plastic pipes soften and collapse in a fire. Small sizes are sometimes covered by an intumescent sealant detail, though larger ones usually call for a collar or wrap. We check the pipe material and diameter against the detail before we start.
Drylining partitions
Drylined fire walls are tested in a particular build-up. We check that the product’s detail covers that partition type and board thickness before sealing.
Why it’s worth doing now in Merston
Fire stopping is a regular point raised at inspections and handover. Late discoveries can delay handover while openings are reopened and resealed. Converted and older buildings near places like Merston tend to move, and aged sealant cracks. A sealant with the right movement capability, correctly sized, lasts far better.
Larger quantities, tricky access or phasing all shape the price. Site requirements like inductions and permits play a part as well, along with the time of year for external work.
Why appoint us
- Our applicators hold CSCS cards
- A fixed quote before work starts
- Health and safety: CHAS accredited
- Fully insured, including public liability cover
Read what affects the cost or our accreditations.
When to call us in Merston
A common fault is a product that was never fire-rated in the first place: expanding foam or a general-purpose sealant pushed into a gap to tidy it. The opening looks sealed but has no fire test evidence behind it, so it has to come out.
Clients normally get in touch after noticing one or more of the following:
- Old intumescent sealant that has split away
- Head-of-wall gaps with no fire seal
- Openings left by services added after handover
- Seals disturbed by maintenance and left open
In a building such as Church of St Giles, any service penetration through a fire-resisting wall should be sealed to the specified detail.
Before you book anyone
- How joint depth will be controlled
- Who will actually carry out the work
- Will RAMS and insurance details be available?
- Are they CHAS accredited or on Constructionline?
After the work
For the best life from the joints:
- Leave fire sealant to cure fully before covering it
- Agree the fire-stopping specification before services go in
- Put resealing into every M&E and fit-out package
- Record which product was used where
Don’t patch a fire-rated seal with anything outside its tested detail. Repairs need the same product and detail as the original.
Specify fire stopping early on refits, not as an afterthought. The designer can then choose details that suit the services planned.