E 30 – EI 120
Fire-Resistant Glass
Integrity and insulating fire glass supplied and fitted into tested frames.
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Northamptonshire · NN11
Insulated Fire Glass (EI) in Daventry
We provide insulated fire glass in Daventry and across Northamptonshire, working from the classification your building needs and handing over the evidence that proves what was fitted.
EI 30 – EI 120NN11England
Quote for Daventry
Tell us what you need. We reply with next steps and a guide price.
What's involved with insulated fire glass in Daventry
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.
- Insulating glass in sealed double-glazed units
- EI 30, EI 60, EI 90 and EI 120 glass
- Impact-classified insulating glass
- Internal and external-grade build-ups
Before you order insulated fire glass: what matters
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.
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.
How it works
When heated, the interlayers turn opaque and expand, forming an insulating shield. After a fire the glass will need replacing.
Where we work around Daventry
Whether the building is in central Daventry or the wider NN11 districts, we can survey and quote. We also cover Rugby, Northampton, Royal Leamington Spa. Daventry lies roughly 19 km from Northampton, within our Northamptonshire coverage.
EI glass in RugbyEI glass in NorthamptonEI glass in Royal Leamington SpaEI glass in BanburyEI glass in Warwick
What every Daventry quote includes
Honest about unknowns
If an existing frame in a Daventry building has no traceable evidence, we say so and price the options rather than guess.
Rated systems, not just rated glass
Every quote in Daventry identifies the tested system: frame, glass, beads, seals and fixings, within its pane-size limits.
England rules applied
Designs follow the building and fire safety rules that apply in England, not a one-size-fits-all approach.
England regulations that shape the job
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.
Daventry building types
Insulated fire glass applies to many building types in Daventry, including retail and leisure units and offices.
FAQs for Daventry
Is EI glass clear?
Yes, in normal conditions. It turns opaque only when heated in a fire.
Does EI glass need replacing after a fire?
Yes. Once the interlayers have reacted, the glass has done its job and must be replaced.
Can you price insulated fire glass in Daventry from photos?
We can give a guide range from photos and sizes, including a clear photo of any marks on the glass. A fixed price follows a survey.
Which rules apply to fire-rated glazing in Daventry?
Building work in Daventry follows the Building Regulations 2010 and Approved Document B, and occupied buildings are covered by the Regulatory Reform (Fire Safety) Order 2005.
Related
Related services in Daventry
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 Daventry job runs
Tell us what you have
Send drawings, a fire risk assessment action or photos of the glass marks.
Measure and check
We measure each opening in Daventry and check what the existing frames can accept.
Written quote
You receive a written quote naming the tested system and classification.
Install and hand over
Installation to the system details, then a handover pack with photographs and evidence.