EI 30 – EI 120
Insulated Fire Glass (EI)
EI 30 to EI 120 glass that blocks heat as well as flames.
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County Durham · DL3
Fire-Resistant Glass across Darlington
From the DL3 district outwards, we arrange fire-resistant glass for buildings across Darlington, matching glass, frames and seals to tested evidence rather than guesswork.
E 30 – EI 120DL3England
Quote for Darlington
Tell us what you need. We reply with next steps and a guide price.
Fire-Resistant Glass in Darlington: what's included
Fire-resistant glass is glazing that has been tested, as part of a complete glazed system, to hold back fire for a set time. It is classified by what it stops: E (integrity) keeps flames and hot gases on the fire side, EW also limits the heat radiated through the glass, and EI (integrity and insulation) also limits the temperature rise on the protected side, so people can pass it more safely.
- Glazing beads and fixings to the frame manufacturer's details
- Integrity (E) glass: modified toughened, glass-ceramic and polished wired types
- Insulating (EI) intumescent-interlayer and gel-filled glass
- Integrity with radiation control (EW) laminated glass
Before you order fire-resistant glass: what matters
Inside or outside?
Many insulating fire glasses use interlayers that need protecting from UV and moisture, so external positions need a product approved for exterior use, with the right edge seal and glazing system.
Impact safety still applies
Glass in doors, side panels and low-level positions has to meet impact safety rules as well as the fire rating. Most modern fire glass carries an impact classification; old wired glass usually does not.
Weight and handling
Insulating fire glass gets thicker and heavier as the rating rises. Large EI 60 and EI 120 panes often need lifting equipment and a frame designed for the load, which we plan before the delivery date.
England regulations that shape the job
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.
Where we work around Darlington
Our County Durham coverage takes in Darlington (DL3, DL1, DL2) and the neighbouring towns of Newton Aycliffe, Stockton-on-Tees, Thornaby-on-Tees. Darlington is the main town we cover in County Durham.
Fire glass in Newton AycliffeFire glass in Stockton-on-TeesFire glass in Thornaby-on-TeesFire glass in Bishop AucklandFire glass in Billingham
What every Darlington quote includes
Honest about unknowns
If an existing frame in a Darlington building has no traceable evidence, we say so and price the options rather than guess.
England rules applied
Designs follow the building and fire safety rules that apply in England, not a one-size-fits-all approach.
Fixed written quotes
After survey you get a fixed written quote for the agreed scope, so Darlington budgets are not open-ended.
Sectors we cover in Darlington
Fire-resistant glass applies to many building types in Darlington, including offices and schools and colleges.
Fire-Resistant Glass: Darlington questions
Is toughened glass fire-resistant?
Ordinary toughened safety glass is not. It can shatter early in a fire. Fire-resistant integrity glass is specially processed or formulated and only gains a rating when fitted in a tested frame and glazing system.
What is the difference between E, EW and EI fire glass?
E is integrity only: it stops flames and hot gases passing for the rated time. EW adds a limit on radiated heat through the glass. EI adds insulation, keeping the unexposed face below set temperature rises so people can pass it safely. The number after the letters is the time in minutes.
Do you carry out fire-resistant glass in Darlington?
Yes. We survey and install in Darlington and across County Durham, including the DL3 district and nearby Newton Aycliffe.
How quickly can you survey in Darlington?
Survey timing in Darlington 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.
Related
Related services in Darlington
E · EW
Integrity Fire Glass (E & EW)
E and EW glass where flames and hot gases must be stopped.
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like-for-like
Broken Fire Glass Replacement
Cracked or broken fire glass replaced to the original specification.
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E 30 – EI 120
Fire-Rated Glazed Screens
Internal glazed screens that keep compartments and corridors protected.
Learn more →Process
From enquiry to handover in Darlington
Start with the brief
Tell us the rating required, sizes and building type, or ask us to find out.
Measure and check
We measure each opening in Darlington 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.