E 30 – EI 120
Fire-Resistant Glass
Integrity and insulating fire glass supplied and fitted into tested frames.
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County Durham · DH1
Durham insulated fire glass
For Durham buildings, we supply, replace and check insulated fire glass wherever the fire strategy depends on it, working to the tested system rather than the glass alone.
EI 30 – EI 120DH1England
Quote for Durham
Tell us what you need. We reply with next steps and a guide price.
Insulated Fire Glass (EI) in Durham: what's included
EI glass is the choice where people need to pass close to the glass during a fire, where combustible materials sit near it, or where building guidance would otherwise restrict glazing. We supply and fit EI 30 to EI 120 glass in tested frames, internally and externally.
- Insulating glass in sealed double-glazed units
- Handling and installation of heavy panes
- EI 30, EI 60, EI 90 and EI 120 glass
- Impact-classified insulating glass
Before you order insulated fire glass: what matters
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.
Optical quality
Modern EI glass is clear in normal use, with high light transmission at lower ratings.
Where we work around Durham
We cover Durham and the surrounding postcode districts, including DH1. Nearby towns we also serve include Chester-le-Street, Houghton-le-Spring, Stanley. Darlington, around 28 km from Durham, is the largest town in the same coverage area.
EI glass in Chester-le-StreetEI glass in Houghton-le-SpringEI glass in StanleyEI glass in WashingtonEI glass in Bishop Auckland
What you can expect in Durham
Fixed written quotes
After survey you get a fixed written quote for the agreed scope, so Durham budgets are not open-ended.
Work around occupied buildings
We can phase work in Durham around residents, staff or pupils, with out-of-hours options.
Honest about unknowns
If an existing frame in a Durham building has no traceable evidence, we say so and price the options rather than guess.
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.
Durham building types
We can survey and quote for schools and colleges, blocks of flats and other building types in Durham.
Questions about insulated fire glass in Durham
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.
Can EI glass be used outside?
Only products approved for external use, usually in a sealed unit with UV protection.
How quickly can you survey in Durham?
Survey timing in Durham depends on access, the size of the building and how urgent the defect is. Tell us your deadline when you enquire and we will confirm a date before you commit.
Which rules apply to fire-rated glazing in Durham?
Building work in Durham 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 Durham
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 Durham
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 Durham and check what the existing frames can accept.
Written proposal
We set out the system, glass, evidence and programme, with a fixed price.
Complete and document
Work is completed to the manufacturer's details and documented for your records.