E 30 – EI 120
Fire-Resistant Glass
Integrity and insulating fire glass supplied and fitted into tested frames.
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Greater London · TW7
Insulated Fire Glass (EI) — Isleworth and TW7
Looking for insulated fire glass in Isleworth? We survey, supply and install tested fire-rated glazing for hotels, retail and leisure units and other buildings in and around Isleworth, including the TW7 postcode district.
EI 30 – EI 120TW7England
Quote for Isleworth
Tell us what you need. We reply with next steps and a guide price.
What's involved with insulated fire glass in Isleworth
Insulated fire glass, classified EI, is glazing that maintains integrity and keeps the temperature rise on the non-fire side within set limits for the rated time. It is usually made of several glass panes bonded with interlayers that foam into an insulating barrier when heated, or with a clear gel that absorbs heat.
- Impact-classified insulating glass
- EI 30, EI 60, EI 90 and EI 120 glass
- Internal and external-grade build-ups
- Matched glazing systems and seals
Where we work around Isleworth
Our Greater London coverage takes in Isleworth (TW7, TW4, TW3, TW8, TW9, UB2) and the neighbouring towns of Hounslow, Heston, Richmond. Isleworth sits within our Greater London coverage, alongside Hounslow.
Key checks for Isleworth projects
Exterior positions
Some EI products are internal only. External use needs a product and edge seal approved for UV and weather.
Thickness and weight
Each step up in rating adds layers, so EI 120 is far thicker and heavier than EI 30. The frame has to be designed for it.
The temperature rule
EI testing limits the average temperature rise on the unexposed face to 140°C and any single point to 180°C, which is why people can pass it.
Which rules apply to insulated fire glass in Isleworth?
England Which rules apply?
Building work in England is covered by the Building Regulations 2010, with fire safety guidance in Approved Document B and impact safety guidance for glazing in Approved Document K.
Once a building is in use, the Regulatory Reform (Fire Safety) Order 2005 requires the responsible person to maintain fire safety measures, including fire-resisting glazing. The Fire Safety (England) Regulations 2022 add duties for multi-occupied residential buildings, including fire door checks in buildings over 11 metres.
In higher-risk buildings, broadly 18 metres or seven storeys with two or more homes, the Building Safety Regulator is the building control authority. England is also phasing out BS 476 references from Approved Document B, with the remaining fire-resistance references due to go in September 2029.
What you can expect in Isleworth
Evidence you can file
You receive the classification references, glass marks and installation photographs for your fire safety records.
Rated systems, not just rated glass
Every quote in Isleworth identifies the tested system: frame, glass, beads, seals and fixings, within its pane-size limits.
Work around occupied buildings
We can phase work in Isleworth around residents, staff or pupils, with out-of-hours options.
Sectors we cover in Isleworth
Insulated fire glass applies to many building types in Isleworth, including hotels and retail and leisure units.
Questions about insulated fire glass in Isleworth
Can EI glass be used outside?
Only products approved for external use, usually in a sealed unit with UV protection.
Why is insulated fire glass so much more expensive?
It is a multi-layer product with specialist interlayers, and the frame and installation must suit its weight.
Do you work on occupied buildings in Isleworth?
Yes. We plan phasing, out-of-hours work and temporary protection so the building can stay in use where the fire strategy allows.
Do you carry out insulated fire glass in Isleworth?
Yes. We survey and install in Isleworth and across Greater London, including the TW7 district and nearby Hounslow.
Related
Related services in Isleworth
E · EW
Integrity Fire Glass (E & EW)
E and EW glass where flames and hot gases must be stopped.
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E 30 – EI 60
Stair, Lobby & Corridor Glazing
Glazed screens and doors on protected stairs, lobbies and corridors.
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E 30 – EI 60
Frameless Fire-Rated Glazing
Butt-jointed fire glass walls with minimal frames.
Learn more →Process
How a Isleworth job runs
Share the details
Send the fire strategy extract, inspection report or a few photos of the openings.
Survey
We visit Isleworth to measure, record existing marks and check the frames and substrate.
Written quote
You receive a written quote naming the tested system and classification.
Fit and record
We install, photograph seals and fixings before closing up, and hand over the schedule.