England · 41 postcode districts
Insulated Fire Glass (EI) in Cheshire
Insulated fire glass across Cheshire covers 41 postcode districts in the CW, WA, CH, SK postcode areas. Every job is built around a tested system.
EI 30 – EI 120EnglandCWWACH
Quote for Cheshire
Tell us what you need. We reply with next steps and a guide price.
Insulated Fire Glass (EI): an overview for Cheshire
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
- Internal and external-grade build-ups
What to check before ordering in Cheshire
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.
How it works
When heated, the interlayers turn opaque and expand, forming an insulating shield. After a fire the glass will need replacing.
Which rules apply 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.
Choose a town in Cheshire
Across Cheshire we can survey in Warrington, Chester, Crewe, Ellesmere Port, Widnes and every district in the CW, WA, CH, SK postcode areas.
Warrington (WA1)Chester (CH1)Crewe (CW1)Ellesmere Port (CH65)Widnes (WA8)Runcorn (WA7)Macclesfield (SK11)Northwich (CW9)Winsford (CW7)Congleton (CW12)Wilmslow (SK9)
Insulated Fire Glass (EI) in Cheshire: questions
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.
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 parts of Cheshire do you cover?
All of it: Warrington, Chester, Crewe, Ellesmere Port, Widnes and every district in the CW, WA, CH, SK postcode areas.
Related
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Process
What happens next
Tell us what you have
Send drawings, a fire risk assessment action or photos of the glass marks.
Site visit
A survey in Cheshire confirms sizes, access, existing evidence and fixing conditions.
Written proposal
We set out the system, glass, evidence and programme, with a fixed price.
Install and hand over
Installation to the system details, then a handover pack with photographs and evidence.