Fire-rated sealing and fire stopping in Old Windsor, Windsor and Maidenhead
Fire-rated and intumescent sealing of service penetrations and linear gaps throughout Old Windsor and nearby, carried out by CSCS-carded applicators. CHAS accredited and fully insured.
- Fire-stopping items raised at inspection or handover
- Expanding foam used as fire stopping
- Hidden openings found during inspections
Fire stopping for businesses in Old Windsor
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Common problems we fix in Old Windsor
Openings in fire-resisting walls normally appear when services are added or changed. A new cable pulled by an electrician, a pipe rerouted by a plumber or a data run drilled through a riser can leave the hole behind. Across several fit-outs, the openings add up.
Typical triggers for a call:
- Open linear gaps along the top of fire-resisting walls
- Fire-stopping items raised at inspection or handover
- Fire stopping installed outside its tested range
- Service penetrations left open after M&E works
For a building such as St Luke, new heating or data runs are the usual reason penetrations need sealing.
Questions to ask before you book
- How long is the guarantee, and what does it include?
- What level of public liability insurance do they hold?
- Their approach to joint depth and backing
- Which product they’ll use, and why it suits the joint
How we handle fire stopping in Old Windsor
Opened ceilings and riser doors often reveal service openings nobody sealed. If a specification already covers those walls and floors, we can reseal to it, matching the product and detail it names. Where there isn’t one, the designer or fire engineer needs to set one first. We work on linear gaps at wall heads, small duct penetrations where the tested detail allows and cable penetrations, and the failures we’re asked to look at most are unsealed penetrations discovered above suspended ceilings and old intumescent sealant that has split away. Whether you call it commercial sealant work, mastic application or joint sealing, the work in Old Windsor is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.
In places the size of Old Windsor, fire-resisting walls and floors are found in schools, care homes, health centres and mixed-use buildings. Specified fire-rated sealant goes around new services there, built to match the manufacturer’s detail.
Every job we finish is backed by a 12-month workmanship guarantee. If our installation lets you down in that time, we return and fix it.
- Location
- Old Windsor (SL4)
- Region
- Windsor and Maidenhead
- Guarantee
- 12 months on our workmanship
- Price
- Quoted before any work starts
- Call
- 01277 525 020
- Updated
- 3 November 2026
Nearby places to Old Windsor
Also in Old Windsor
Old Windsor: questions and answers
Would you work within a site like Princess Margaret Hospital?
Yes, hospitals are one of the sectors we cover. Work is phased so departments keep running, under the site’s own rules.
Is Old Windsor too far out for you?
No. Small places get the same service as large ones. London and every South East county are within our area. Where we can, we group nearby jobs to make the most of each trip.
How do you choose the sealant?
The specification comes first, if there is one. If there isn’t one, it comes down to the joint: its movement, its surfaces and what it has to cope with.
How long do sealant joints last?
It depends on movement, UV and weather, cleaning, traffic and the product. Treat them as maintenance items and inspect them regularly.
Are you members of a third-party fire-stopping installer scheme?
No, and we’d rather be clear about that. Third-party schemes aren’t a legal requirement, but many clients and main contractors ask for them, so it’s worth checking what your contract says. If it doesn’t require one, we can install the specified fire-rated sealant to its tested detail.
Is the BS 476 change in 2029 relevant to fire stopping?
It mainly affects England, where Approved Document B is dropping its BS 476 references from 2 September 2029. Classification to BS EN 13501-2 becomes the expected evidence. In Scotland, the Technical Handbook sets its own guidance, with clause 2.1.14 covering service penetrations.
Will you sign off the seals for us?
No. Approval sits with the designer, principal designer or building control. We will confirm the products and details used, and you can tell us what other records you need at quote stage.
Penetration seals near Old Windsor
Old Windsor has plenty of hotels close by, all within 2 miles. 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. Its BS 476 references are being withdrawn from 2 September 2029, with BS EN 13501-2 classification taking over, subject to transitional arrangements. Our part stays the same: the specified product, installed to its tested detail.
Residences at universities like Royal Holloway University, 2.3 miles to the south of Old Windsor, have compartment walls that must be resealed whenever services change. Offices at parks like Portland Business Park (1.7 miles north of Old Windsor) are re-cabled with each new tenant, and compartment walls need sealing afterwards to the tested detail.
Old Windsor is about 2 miles north-west of Egham, in Windsor and Maidenhead. Across the SL4 postcode area, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. 60 places across Windsor and Maidenhead fall within our area, including Old Windsor. Sites around Reading have their own page, roughly 17 miles from Old Windsor.
Work on service penetrations is covered throughout SL4, whatever the building. If your site is on Church Road, Parker Gardens and Gregory Drive or close by, we can quote for service penetrations. Main routes into Old Windsor include the B3021, which helps when planning parking and deliveries for the job. Close to Old Windsor, our area also takes in Wraysbury (1 mile east), Sunnymeads (1 mile north-east), Bishopsgate (1 mile south), Datchet (2 miles north) and Englefield Green (2 miles south). Bigger towns within reach include Maidenhead (8 miles north-west), Windsor (3 miles north-west), Boyn Hill (8 miles north-west), Cookham (9 miles north-west), Furze Platt (9 miles north-west) and Dedworth (3 miles north-west).
What’s near Old Windsor
We work on buildings around St John's Beaumont School, Windsor Great Park and The Fox And Castle Public House and the streets around them. For rail, the closest station is Sunnymeads station, roughly 1.3 miles north-east. Well-known places in the area include Windsor Castle (2.1 miles north-west) and Berkshire Yeomanry Museum (1.6 miles north-west). For a walk, there’s St Ann's Hill and Virginia Water Lake.
Why it’s worth doing now in Old Windsor
An improvised seal can look finished while offering no tested performance. The fix is to remove it and reinstall to the detail, and doing it once, properly, is cheaper. Over time, UV, weather and movement wear any sealant out. Renewing it in good time keeps the building weathertight.
Access can matter as much as the joints themselves: easy-to-reach joints are quicker than those that need equipment to get to. Mention the access as part of your enquiry.
Why clients in Old Windsor choose us
- Sealing commercial buildings since 2005
- Products installed to the manufacturer’s instructions
- Old sealant cut out, never sealed over
- 12-month guarantee on workmanship
Take a look at how commercial sealant jobs are priced or our accreditations and insurance.
For managing agents and facilities managers
If you look after buildings for someone else, you need clear quotes and clear reporting. You get a fixed quote, an agreed scope and a walk round at the end.
Building owners and managing agents use us on everything from one building to a spread of sites. Several sites can go on one quote, so there’s one set of paperwork to deal with.
Different surfaces, different methods
Cables and cable bundles
Cable penetrations are frequently sealed with fire-rated sealant where the detail allows. The detail limits bundle size and the gaps between and around cables and we work within those limits.
Drylining partitions
Holes in board are often cut larger than needed. If the gap exceeds the tested range, sealant alone won’t do.
On site: what to expect
At the end of each section, we remove the tape, clean down and inspect every joint, ready for your sign-off. If an area should be left alone while the sealant cures, we say how long and put signs out. If neighbouring businesses or buildings around Old Windsor need work too, visits can be combined. Tell us your site hours and we will plan around them.
- 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.
- Fire-rated or intumescent sealant goes in around the services and is tooled off.
- We walk the completed areas with you and confirm the records agreed at quote stage.
What we need from you
- Point out parking and an unloading spot
- Tell us which areas need to stay in use
- Tell us your opening times and when work is allowed
Request a quote
Need a figure for a tender or a budget? Send the scope and any drawings, and we’ll return a fixed quote that you can work with. If you have questions first, give us a call on 01277 525 020 or email drawings and photos.
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When it isn’t the sealant
Not every problem is a sealant problem, and we’d rather tell you before you spend money. It won’t fix:
- Construction that lacks the fire resistance the seal relies on
- Fire doors, dampers or other fire safety equipment
- Openings that need collars, wraps, batts or boards rather than sealant
Not sure which it is? You can speak to us on 01277 525 020 or email the details over and we will tell you honestly.
Surfaces we seal
- Pipe penetrations
- Joints between fire-resisting walls and floors
- Service gaps in risers
- Cable penetrations
- Small duct penetrations where the tested detail allows
- Linear gaps at wall heads