E 30 – EI 120
Fire-Resistant Glass
Integrity and insulating fire glass supplied and fitted into tested frames.
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Derbyshire · DE1
Insulated Fire Glass (EI) across Derby
Our insulated fire glass service covers Derby and neighbouring areas such as Belper and Ilkeston, with every job built around a tested system.
EI 30 – EI 120DE1England
Quote for Derby
Tell us what you need. We reply with next steps and a guide price.
What our insulated fire glass service includes in Derby
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.
- EI 30, EI 60, EI 90 and EI 120 glass
- Insulating glass in sealed double-glazed units
- Internal and external-grade build-ups
- Handling and installation of heavy panes
Derby coverage and nearby towns
Survey visits can be arranged anywhere in Derby, including the DE1, DE23, DE24, DE22, DE3, DE21 districts, and in nearby Belper, Ilkeston, Heanor. Derby is the main town we cover in Derbyshire.
Key checks for Derby projects
Storage on site
Insulating fire glass should be stored dry, upright and away from direct sun before fitting.
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.
Optical quality
Modern EI glass is clear in normal use, with high light transmission at lower ratings.
Fire glazing rules in England
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 Derby
Evidence you can file
You receive the classification references, glass marks and installation photographs for your fire safety records.
Work around occupied buildings
We can phase work in Derby around residents, staff or pupils, with out-of-hours options.
Honest about unknowns
If an existing frame in a Derby building has no traceable evidence, we say so and price the options rather than guess.
Sectors we cover in Derby
Insulated fire glass applies to many building types in Derby, including healthcare buildings and blocks of flats.
Questions about insulated fire glass in Derby
Can EI glass be used outside?
Only products approved for external use, usually in a sealed unit with UV protection.
Does EI glass need replacing after a fire?
Yes. Once the interlayers have reacted, the glass has done its job and must be replaced.
Which rules apply to fire-rated glazing in Derby?
Building work in Derby follows the Building Regulations 2010 and Approved Document B, and occupied buildings are covered by the Regulatory Reform (Fire Safety) Order 2005.
Do you carry out insulated fire glass in Derby?
Yes. We survey and install in Derby and across Derbyshire, including the DE1 district and nearby Belper.
Related
Related services in Derby
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 Derby job runs
Tell us what you have
Send drawings, a fire risk assessment action or photos of the glass marks.
Site visit
A survey in Derby confirms sizes, access, existing evidence and fixing conditions.
Quote and evidence
Your quote lists each item with its classification and the evidence it relies on.
Fit and record
We install, photograph seals and fixings before closing up, and hand over the schedule.