E, EW and EI fire glass: what do the classifications mean?
Integrity, radiation control and insulation explained in plain English.
Guides
Fire-rated glazing guides
Plain-English answers on classifications, testing, regulations, costs and maintenance.
Each guide answers one question in its opening paragraph, then explains the detail. Regulations differ between England, Wales, Scotland and Northern Ireland, so we say where a rule is nation-specific.
All guides
How is fire-rated glazing tested and classified?
Furnace tests, classification reports and assessments explained.
Is Georgian wired glass fire-rated?
What wired glass does in a fire, and why it is often replaced.
Can you replace fire glass without replacing the frame?
When glass-only replacement is fine, and when it is not.
What are the rules for glazing on fire escape routes?
Integrity versus insulation on stairs, lobbies and corridors.
How do you identify fire-rated glass?
Marks, appearance and what a visual check cannot prove.
Does fire glass also need to be safety glass?
Impact safety rules apply to fire glazing in critical locations.
How much does fire-rated glazing cost?
Guide prices and what drives them.
What are the rules for glazing in fire doors?
Vision panels, glass types and what invalidates a door.
Steel, aluminium or timber: which fire-rated screen should you choose?
How the three frame materials compare.
What evidence will building control ask for on fire-rated glazing?
The documents that get glazing signed off.
BS 476 to BS EN 13501-2: what the change means for fire glazing
How England is moving from British to European fire classifications.
Fire-rated glazing in higher-risk buildings: what changes under the Building Safety Act?
Gateways, change control and evidence for taller residential buildings in England.
When does glazing near a boundary need to be fire-rated?
Unprotected areas and external fire spread.
What are a responsible person's duties for fire-rated glazing?
Maintaining compartmentation under fire safety law.
Can you fit fire-rated glazing in a listed or heritage building?
Balancing fire safety with historic fabric.