Wales · 10 postcode districts
Insulated Fire Glass (EI) in South Glamorgan
Insulated fire glass across South Glamorgan covers 10 postcode districts in the CF postcode areas. Every job is built around a tested system.
EI 30 – EI 120WalesCF
Quote for South Glamorgan
Tell us what you need. We reply with next steps and a guide price.
Insulated Fire Glass (EI): an overview for South Glamorgan
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
- EI 30, EI 60, EI 90 and EI 120 glass
- Matched glazing systems and seals
Choose a town in South Glamorgan
We cover insulated fire glass in Cardiff and across South Glamorgan, including Barry, Penarth.
Key checks for South Glamorgan projects
Optical quality
Modern EI glass is clear in normal use, with high light transmission at lower ratings.
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.
Regulations for South Glamorgan projects
Wales Which rules apply?
Building regulations are devolved in Wales, so fire safety design follows the Welsh Ministers' version of Approved Document B rather than the English one, alongside impact safety guidance for glazing.
The Regulatory Reform (Fire Safety) Order 2005 applies in Wales, so the responsible person must maintain fire-resisting glazing as part of the premises' fire safety measures. The Fire Safety Act 2021 confirmed this extends to the structure, external walls and flat entrance doors of multi-occupied residential buildings.
FAQs for South Glamorgan
What does EI 60 mean?
The glazing system kept fire on one side (integrity) and limited the temperature rise on the other side (insulation) for at least 60 minutes in a standard fire test.
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.
Do you cover all of South Glamorgan?
Yes. We take enquiries from across South Glamorgan, including Cardiff and Barry, Penarth, and arrange surveys to suit your programme.
Related
Related services in South Glamorgan
E 30 – EI 60
Stair, Lobby & Corridor Glazing
Escape routes for South Glamorgan buildings
View details →
Process
From enquiry to handover in South Glamorgan
Start with the brief
Tell us the rating required, sizes and building type, or ask us to find out.
Survey
We visit South Glamorgan to measure, record existing marks and check the frames and substrate.
Written proposal
We set out the system, glass, evidence and programme, with a fixed price.
Fit and record
We install, photograph seals and fixings before closing up, and hand over the schedule.