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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Hertfordshire · SG6
Fire-Resistant Glass — Letchworth Garden City and SG6
When a fire strategy, inspection report or building control comment in Letchworth Garden City calls for glazing tested to resist fire, our fire-resistant glass service covers survey, supply and installation.
E 30 – EI 120SG6England
Quote for Letchworth Garden City
Tell us what you need. We reply with next steps and a guide price.
Fire-Resistant Glass in Letchworth Garden City: what's included
We supply and fit fire-resistant glass into new and existing fire-rated frames, matching the glass type, thickness, beads, seals and fixings to the test or assessment evidence for that frame. The glass on its own does not carry a rating; the combination does, so we start every job by identifying the system you have or need.
- Impact-classified build-ups for critical locations
- Insulating (EI) intumescent-interlayer and gel-filled glass
- Glazing beads and fixings to the frame manufacturer's details
- Integrity (E) glass: modified toughened, glass-ceramic and polished wired types
Where we work around Letchworth Garden City
Coverage around Letchworth Garden City includes the SG6, SG15 districts and nearby Hitchin, Stevenage, Luton. Watford, around 38 km from Letchworth Garden City, is the largest town in the same coverage area.
Fire glass in HitchinFire glass in StevenageFire glass in LutonFire glass in AmpthillFire glass in Welwyn Garden City
Key checks for Letchworth Garden City projects
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.
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.
Which classification do you actually need?
The fire strategy or building control drawings set the rating for each element. Integrity-only glass is cheaper and thinner, but its use on escape routes is restricted; insulating glass carries far fewer restrictions because people can pass it safely during a fire.
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.
What you can expect in Letchworth Garden City
Evidence you can file
You receive the classification references, glass marks and installation photographs for your fire safety records.
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 Letchworth Garden City budgets are not open-ended.
Letchworth Garden City building types
Sector guides below cover care homes, industrial units and other buildings in Letchworth Garden City.
Questions about fire-resistant glass in Letchworth Garden City
How thick is fire-resistant glass?
Integrity glass can be similar in thickness to standard glass. Insulating glass is laminated from several layers, so it gets markedly thicker and heavier as the rating increases from EI 30 to EI 120.
Can you match glass that is already installed?
Often, yes. We read the marks on the existing panes and check them against the frame evidence. Where the original product is discontinued we look for an alternative covered by the same evidence or a formal assessment.
Do you carry out fire-resistant glass in Letchworth Garden City?
Yes. We survey and install in Letchworth Garden City and across Hertfordshire, including the SG6 district and nearby Hitchin.
Can you price fire-resistant glass in Letchworth Garden City from photos?
We can give a guide range from photos and sizes, including a clear photo of any marks on the glass. A fixed price follows a survey.
Related
Related services in Letchworth Garden City
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.
Learn more →
E 30 – EI 120
Fire-Rated Glazed Screens
Internal glazed screens that keep compartments and corridors protected.
Learn more →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 Letchworth Garden City confirms sizes, access, existing evidence and fixing conditions.
Written quote
You receive a written quote naming the tested system and classification.
Install and hand over
Installation to the system details, then a handover pack with photographs and evidence.