Fire-rated sealing and fire stopping in St Lawrence, Isle of Wight
Fire-rated and intumescent sealing of service penetrations and linear gaps in St Lawrence. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Seals that don’t match their tested detail
- Expanding foam used as fire stopping
- Snag lists that include open service penetrations
Fire stopping near St Lawrence
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Fire stopping in St Lawrence
We should be clear about what we do and don’t do. The designer, fire engineer or building control decides which fire stopping is required; sign-off sits with them too. What we bring is careful installation of the specified sealant, to the maker’s guidance on buildings around St Lawrence. We work on pipe penetrations, joints between fire-resisting walls and floors and linear gaps at wall heads, and the usual reasons a site gets in touch are open linear gaps along the top of fire-resisting walls and fire seals cut back for extra cables and never reinstated. A single leaking joint is often how a building in St Lawrence first comes to us: we look at the rest while we are there and tell you what we find.
Barn and farm-building conversions near places like St Lawrence often combine new partitions with old walls. Where a pipe or cable passes through a fire-resisting wall, the seal must match the tested detail: product, substrate, gap and depth.
Work we carry out comes with a 12-month guarantee. Should something we installed fail, phone 01277 525 020 or email the details over and we will come back to it.
- Place
- St Lawrence (PO38)
- Wider area
- Isle of Wight
- Cover
- 12 months on our workmanship
- Quote
- Quoted before any work starts
- Call
- 01277 525 020
- Page updated
- 3 November 2026
Where services cross fire walls in St Lawrence
Plenty of hotels sit less than 2 miles from St Lawrence. Hotels are divided into compartments, and refurbishments that add pipes and cables through bedroom and corridor walls leave gaps to close. Approved Document B is the English guidance that covers fire stopping around openings and penetrations. 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. Either way, we install the specified product to its tested detail.
Theatres, wards and plant rooms at sites like Arthur Webster Memorial Hospital for Children, 4.1 miles north-east of St Lawrence, all have compartment walls crossed by services. Workshops and IT rooms at colleges like St Catherine's College (to the east of St Lawrence) are re-serviced often, leaving penetrations to seal.
St Lawrence is about 4 miles south-west of Shanklin, in the Isle of Wight. Anywhere in PO38, it works the same way: send details, get a fixed quote, we seal, and the work is guaranteed. Our the Isle of Wight coverage takes in 125 places, from busy centres to rural villages. Our Portsmouth page has more on work in that area, about 17 miles away.
We cover the PO38 postcode districts for service penetrations. For a building on Twining Road, Whitwell Road and Woolverton Road or nearby, we can quote for service penetrations. We also cover Steephill (1 mile east), Nettlecombe (1 mile north-west), Whitwell (1 mile north-west), Ventnor (1 mile east) and Bierley (2 miles north-west). Bigger towns within reach include Newport (8 miles north), Ryde (10 miles north), Cowes (12 miles north), Sandown (6 miles north-east), Shanklin (4 miles north-east) and East Cowes (12 miles north). Island and remote sites need extra planning, with travel, ferry crossings where needed and weather to allow for, so mention the location when you give us a call on 01277 525 020 or use the quote form.
Around St Lawrence
Recent enquiries here include premises near St Catherine's School. The nearest railway station is Shanklin station, roughly 4.1 miles north-east. Other landmarks nearby include Arthur Webster Memorial Hospital for Children (4.1 miles north-east) and Longshoremans Museum (1.3 miles east). Not far away are Stenbury Down.
Cost factors for service penetrations
Quotes vary with the job. Expect it to depend on:
- The product specified
- Working within restricted access windows
- How much existing material needs removing
- Joint width, depth and condition
Access often affects the price as much as the sealing: joints within easy reach take less time than ones that need access equipment. Tell us how the joints are reached and call for a quote.
Before you send an enquiry
A good diagnosis starts with the right details. Tell us:
- Access details, including height
- Any specification or named product
- Clear photos of the problem areas
- Whether an asbestos survey exists
To get a fixed quote, call the office on 01277 525 020 or send details through our quote form. You can also send details through our quote form.
After the work
Sealant joints are maintenance items, and their life depends on movement, exposure, cleaning and use. Our advice:
- Put resealing into every M&E and fit-out package
- Treat an open penetration as a priority repair
- Agree the fire-stopping specification before services go in
- Include service cupboards in routine inspections
Add risers, plant rooms and ceiling voids to routine fire-stopping checks. Look for cracks, unsealed new cables and gaps that have been enlarged and get them dealt with.
Looking at service areas on a regular cycle pays off. A cracked or disturbed seal found early is a small job; found late, it can be one of many.
On site: what to expect
At the end of each section, we remove the tape, clean down and inspect every joint with your site contact. Where the sealant needs time to cure before use, we tell you and sign the area. For work around St Lawrence, we aim to finish in one visit, so we ask for photographs and rough sizes first. That way the right products come on the day.
- 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.
- We fit the backing the detail asks for, to the stated depth.
- 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.
What we need from you
- Move anything stored against the joints
- Send your site hours and access windows
- Let building users know which areas are affected
Quotes
Every quote starts with the facts: the joints involved, quantities, access and the product called for. Share whatever details you have and we will fill any gaps with a visit.
Related advice
Questions we’re asked in St Lawrence
What does the BS 476 change mean for fire-rated sealant in St Lawrence?
From 2 September 2029, Approved Document B drops its BS 476 references in favour of BS EN 13501-2 classification, with transitional arrangements. Whichever applies, we install the specified product to its tested detail; the specification is for the designer to set.
Can you work around term dates at a campus such as St Catherine's College?
Yes. We plan campus work around teaching, exams and residence turnarounds. We’re CHAS accredited and a Constructionline member, and paperwork such as RAMS is confirmed with the quote.
Are you CHAS accredited and on Constructionline?
Yes. We’re CHAS accredited, we are a Constructionline member and we use CSCS-carded applicators.
How long does a job like this take?
It depends on the scope, though a typical visit normally takes longer where risers, ceiling voids or occupied floors have to be worked through in sequence. For bigger or phased jobs, we will set out a timescale with the quote.
Is your workmanship covered by a guarantee?
Yes, for 12 months. If a joint fails because of how we installed it, we come back and put it right.
Can you work while the building is occupied?
In the majority of cases, yes. We phase the work so most of the building stays in use.
Is any job too small?
Whatever the size, the process is the same: send details, get a fixed quote, we seal, guaranteed.
Different surfaces, different methods
Plastic pipes
Plastic waste pipes through slabs come up often. Whether sealant alone is acceptable depends entirely on the tested detail, and we will never swap a specified collar for sealant.
Linear joints
Joints at the top of partitions may need to move as the slab above deflects. We use the product and backing the detail names for that movement, with no gaps along the run.
More services for St Lawrence
When something else is needed
Before quoting, we check that sealant is the right answer. It isn’t the answer for:
- Fire risk assessments, a job for a competent assessor
- Plastic pipes whose detail calls for a collar or wrap
- Gaps in walls that were never built as compartment walls
If you’re not sure, just ring 01277 525 020 or use the quote form and we’ll give you a straight answer.
Joints and surfaces we work on
- Pipe penetrations
- Service gaps in risers
- Cable penetrations
- Joints between fire-resisting walls and floors
- Small duct penetrations where the tested detail allows
- Linear gaps at wall heads
Do you need fire stopping in St Lawrence?
Physical damage is another reason seals stop doing their job. Seals get knocked during maintenance, cut back to add a cable or pulled out when services are swapped and the opening isn’t always resealed.
Typical triggers for a call:
- Openings left by services added after handover
- Old intumescent sealant that has split away
- Unsealed penetrations discovered above suspended ceilings
- Seals disturbed by maintenance and left open
Hotels like St. Rhadagunds Hotel (less than half a mile south-west of St Lawrence) are refurbished in phases, and each phase can open up compartment walls.
What your quote should include
- Their public liability cover
- Can the work be phased to keep areas open?
- Who will actually carry out the work
- Is the sealant right for the movement and the substrate?