England · 34 postcode districts
Insulated Fire Glass (EI) in West Sussex
We take insulated fire glass enquiries from across West Sussex, with surveys arranged in Crawley, Worthing, Bognor Regis, Littlehampton, Horsham and the surrounding towns.
EI 30 – EI 120EnglandBNRHPO
Quote for West Sussex
Tell us what you need. We reply with next steps and a guide price.
Insulated Fire Glass (EI): an overview for West Sussex
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.
- Impact-classified insulating glass
- Matched glazing systems and seals
- Internal and external-grade build-ups
Before you order in West Sussex
Optical quality
Modern EI glass is clear in normal use, with high light transmission at lower ratings.
Storage on site
Insulating fire glass should be stored dry, upright and away from direct sun before fitting.
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.
Towns we cover in West Sussex
Across West Sussex we can survey in Crawley, Worthing, Bognor Regis, Littlehampton, Horsham and every district in the BN, RH, PO, GU postcode areas.
Crawley (RH11)Worthing (BN11)Bognor Regis (PO21)Littlehampton (BN17)Horsham (RH12)Haywards Heath (RH16)Chichester (PO19)Burgess Hill (RH15)East Grinstead (RH19)
Questions from West Sussex clients
Can EI glass be used outside?
Only products approved for external use, usually in a sealed unit with UV protection.
Does EI glass need replacing after a fire?
Yes. Once the interlayers have reacted, the glass has done its job and must be replaced.
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.
Do you cover all of West Sussex?
Yes. We take enquiries from across West Sussex, including Crawley and Worthing, Bognor Regis, Littlehampton, Horsham, and arrange surveys to suit your programme.
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Process
What happens next
Share the details
Send the fire strategy extract, inspection report or a few photos of the openings.
Survey
We visit West Sussex 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.