E 30 – EI 120
Fire-Resistant Glass
Integrity and insulating fire glass supplied and fitted into tested frames.
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County Londonderry · BT47
Insulated Fire Glass (EI) in Derry / Londonderry
Looking for insulated fire glass in Derry / Londonderry? We survey, supply and install tested fire-rated glazing for public buildings, offices and other buildings in and around Derry / Londonderry, including the BT47 postcode district.
EI 30 – EI 120BT47Northern Ireland
Quote for Derry / Londonderry
Tell us what you need. We reply with next steps and a guide price.
Insulated Fire Glass (EI) in Derry / Londonderry: what's included
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.
- Internal and external-grade build-ups
- Matched glazing systems and seals
- EI 30, EI 60, EI 90 and EI 120 glass
- Insulating glass in sealed double-glazed units
Areas we cover around Derry / Londonderry
Coverage around Derry / Londonderry includes the BT47, BT48 districts and nearby Coleraine, Omagh, Ballymena. Derry / Londonderry is the main town we cover in County Londonderry.
EI glass in ColeraineEI glass in OmaghEI glass in BallymenaEI glass in PortadownEI glass in Craigavon
Key checks for Derry / Londonderry projects
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.
Storage on site
Insulating fire glass should be stored dry, upright and away from direct sun before fitting.
Exterior positions
Some EI products are internal only. External use needs a product and edge seal approved for UV and weather.
Fire glazing rules in Northern Ireland
Northern Ireland Which rules apply?
In Northern Ireland, building work follows the Building Regulations (Northern Ireland) 2012, with fire safety guidance in Technical Booklet E, approved by the district council's building control.
Once in use, the Fire and Rescue Services (Northern Ireland) Order 2006 and the Fire Safety Regulations (Northern Ireland) 2010 require the appropriate person to maintain fire safety measures, including fire-resisting glazing.
Technical Booklet E sets its own provisions for glazing on escape routes, so designs are checked against the Northern Ireland guidance rather than English documents.
What every Derry / Londonderry quote includes
Honest about unknowns
If an existing frame in a Derry / Londonderry building has no traceable evidence, we say so and price the options rather than guess.
Rated systems, not just rated glass
Every quote in Derry / Londonderry identifies the tested system: frame, glass, beads, seals and fixings, within its pane-size limits.
Work around occupied buildings
We can phase work in Derry / Londonderry around residents, staff or pupils, with out-of-hours options.
Building types we cover in Derry / Londonderry
Sector guides below cover public buildings, offices and other buildings in Derry / Londonderry.
Questions about insulated fire glass in Derry / Londonderry
Is EI glass clear?
Yes, in normal conditions. It turns opaque only when heated in a fire.
Can EI glass be used outside?
Only products approved for external use, usually in a sealed unit with UV protection.
Do you work on occupied buildings in Derry / Londonderry?
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 Derry / Londonderry?
Yes. We survey and install in Derry / Londonderry and across County Londonderry, including the BT47 district and nearby Coleraine.
Related
Related services in Derry / Londonderry
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
From enquiry to handover in Derry / Londonderry
Share the details
Send the fire strategy extract, inspection report or a few photos of the openings.
Measure and check
We measure each opening in Derry / Londonderry and check what the existing frames can accept.
Quote and evidence
Your quote lists each item with its classification and the evidence it relies on.
Install and hand over
Installation to the system details, then a handover pack with photographs and evidence.