Fire stopping in Charvil
Fire stopping in Charvil, backed by over 20 years in commercial sealing. Fully insured and CHAS accredited.
- Seals disturbed by maintenance and left open
- Fire-rated sealant that has cracked or shrunk back
- Unsealed openings around new pipes and cables
Fire stopping for Charvil sites
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
When something else is needed
We check first that sealant really is the fix. It won’t put right:
- Openings that need collars, wraps, batts or boards rather than sealant
- Reviewing a building’s overall fire safety
- Designing or specifying fire stopping, which sits with the designer or fire engineer
Not sure which it is? You can speak to us on 01277 525 020 or send details through our quote form and we will tell you honestly.
Joints and surfaces we work on
- Pipe penetrations
- Service gaps in risers
- Cable penetrations
- Linear gaps at wall heads
- Joints between fire-resisting walls and floors
- Small duct penetrations where the tested detail allows
Fire stopping in Charvil
On a fit-out or refurbishment, we follow the services contractors floor by floor. We work from your penetration schedule or marked-up drawings. Tell us what records you need and we’ll confirm with the quote. If you’re dealing with old intumescent sealant that has split away and builders’ foam or ordinary silicone in compartment walls, we can put it right, on cable penetrations, joints between fire-resisting walls and floors and pipe penetrations alike. A specialist sealant contractor works differently from a general builder: in Charvil, that means joint design, primers and backing rod as standard.
Buildings in a smaller place such as Charvil that need fire-rated sealing are typically schools, care homes, surgeries, small offices and flats over shops. Specified fire-rated sealant goes around new services there, built to match the manufacturer’s detail.
Our workmanship is guaranteed for 12 months, wherever the site is. If a joint we sealed fails because of how it was installed, we come back and put it right.
- Place
- Charvil (RG10)
- Wider area
- Wokingham
- Guarantee
- 12 months on every job
- Quote
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Updated
- 3 November 2026
What else we do in Charvil
What happens if it’s left?
Inspections and handover checks often pick up fire stopping. Late discoveries can delay handover while openings are reopened and resealed. Sealant hardens, cracks and loses grip with age, UV and movement. Replacing it before it fails keeps water out.
Larger quantities, tricky access or phasing all shape the price. So do site requirements such as inductions and permits.
Why appoint us
- Fully insured
- Constructionline member
- CSCS-carded applicators
- Over 20 years of commercial sealing
See what affects the cost or our accreditations and insurance.
Questions we’re asked in Charvil
Can you seal around new services in a hotel near Charvil?
Yes. We install fire-rated and intumescent sealant where it is specified. Each seal follows the tested detail, and rooms are done in turn.
What does the BS 476 change mean for fire-rated sealant in Charvil?
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. Whichever applies, we install the specified product to its tested detail; the specification is for the designer to set.
Are you CHAS accredited?
Yes. We are CHAS accredited and a Constructionline member.
Does the weather affect the work?
It can, when the joints are outside. Wet joints and cold, damp or frosty conditions stop the sealant bonding properly, so external work may be moved if conditions aren’t right. Indoors, the weather is rarely a problem.
Can the building stay open while you work?
In the majority of cases, yes. We phase the work so most of the building stays in use, with each area protected and signed.
When can you be on site?
The office is staffed Monday to Friday, from 8am until 5pm. Let us know your site hours and access windows, and the work will be planned around them.
How much does the work cost?
We don’t publish prices, as every site differs. Send photographs or drawings and we’ll price it at a fixed figure.
Aftercare for building managers
Once the work is signed off, a little attention goes a long way:
- Keep general-purpose fillers away from compartment walls
- File the specified details where the next contractor can find them
- Arrange inspection before areas are covered up
- Report damaged or disturbed seals as soon as they’re spotted
Once the seals are in, tell other trades they exist and must not be disturbed. If a seal has to be opened for a new service, it should be reinstated to the same detail, by someone who knows the system.
Regular walk-rounds of service areas are worth the time. Catching a damaged seal early keeps the fix small compared with dozens found at once.
Fire stopping around Charvil: what changes locally
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. Charvil lies roughly 34 miles out from central London. Office refits around the commuter belt bring new cabling through fire-resisting walls.
Residences at universities like University of Reading (1.9 miles north-west of Charvil) have compartment walls that must be resealed whenever services change. Hospital estates such as Royal Berkshire Hospital, 3.7 miles to the south-west of Charvil, are divided into fire compartments, and any service penetration through them should be sealed to the specified, tested detail. Refits at places like Loddon Vale Shopping Centre, 1.5 miles south of Charvil, often reroute services through walls between units.
Charvil is about 2 miles north of Woodley, in Wokingham. Charvil sits inside our coverage and the rest of Wokingham, with the same fixed quotes and 12-month guarantee as everywhere else. Our Wokingham coverage takes in 42 places, large and small.
We cover the RG10 postcode districts for service penetrations. For a building on Old Bath Road, Wenlock Edge and Pipistrelle Way or nearby, we can quote for service penetrations. Nearby places we also cover include Twyford (1 mile east), Ruscombe (1 mile east), Whistley Green (1 mile south-east), Woodley (2 miles south) and Shiplake (2 miles north). Nearby towns on our patch include Wokingham (5 miles south), Earley (4 miles south-west), Crowthorne (8 miles south-east), Lower Earley (4 miles south-west), Winnersh (3 miles south) and Shinfield (6 miles south-west).
What’s near Charvil
Recent enquiries here include premises near The Piggott School, Polehampton Church of England Infant School and The Wagon And Horses Public House and the streets around them. For rail, the closest station is Twyford station, about 0.9 miles east. A little further out are Royal Berkshire Hospital (3.7 miles south-west) and Berkshire Medical Heritage Centre Museum (3.6 miles south-west). Green spaces nearby include Sonning Hill and South Lake.
Site staff or a sealant specialist?
A short, simple internal joint is often within reach of a maintenance team. Where it goes wrong is preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
There’s also the paperwork. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we’ll confirm the paperwork you need with the quote.
Surface by surface
Masonry and concrete
Block walls and concrete floors are common substrates for penetration seals. Dust and loose debris are cleared out of the opening, so the sealant and any backing sit properly.
Plastic pipes
Plastic pipes soften and collapse in a fire. Some intumescent sealants are tested on smaller plastic pipes, though larger ones typically call for a collar or wrap. We confirm material and size first and tell you if sealant isn’t the right product.
Our process
In a busy building, we agree a sequence with your contact so the disruption stays in one area at once. Each area is protected, prepared and sealed, then reopened once the sealant allows before the next one starts. For a job in Charvil, the main thing is a clear picture of the work, so send photographs of each area. You’ll then get a fixed price for the work.
- 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.
Before we start on site
- Have the specification and drawings to hand
- Send your site hours and access windows
- Warn occupants and staff about the work
Quotes
Send us photographs, drawings or a joint schedule are often enough for a fixed quote. Where a site visit makes more sense, we will arrange one.