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Glass & Glazing

Specialist glass and glazing systems engineered for performance — warmer rooms, quieter homes, safer openings and lower bills, year after year.

The Glass

Fire-resistant Glass

Fire-resistant glass is engineered to hold back flames, smoke and (in some specifications) radiant heat for a specified period — typically 30, 60 or 90 minutes — giving occupants vital extra time to escape and limiting fire spread between rooms. It's a critical specification for stairwells, escape routes, internal partitions and any opening where Building Regulations demand a fire-rated barrier.

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Fire-resistant Glass
Holds Back Flames When It Matters Most
Why It Matters

Holds Back Flames When It Matters Most

Modern fire-rated glass typically uses an intumescent interlayer between two or more panes — when exposed to heat, the interlayer turns opaque and expands, blocking heat transmission while the toughened outer panes hold the assembly together. Different products provide integrity (E), integrity plus reduced radiation (EW), or full insulation (EI) — we'll spec the right rating for each location.

  • Fire ratings from 30 to 90+ minutes
  • E, EW or EI classification options
  • Blocks flames, smoke & (in EI) heat
  • Essential for stairwells & escape routes
  • Building Regs Part B compliant
  • Tested to BS EN 13501-2
Energy efficiency rating
Energy Rating

Rated By Time, Not Just Temperature

Fire-resistant glass is primarily rated by how long it holds back flames, smoke and heat — typically 30, 60 or 90 minutes (E30, EI60, EI90 etc). Thermal insulation is a secondary consideration, but combined with a double-glazed system, sensible U-values are still achievable.

How To Verify

Check the fire-resistance classification (e.g. E30, EW60, EI90) against the requirement set by your architect or building control. If the pane is part of an insulated sealed unit, also ask for the system U-value for the complete installation.

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Fire-resistant Glass — common questions

These are fire-resistance ratings. The letter shows what the glass blocks (E = integrity/flames and smoke; EW = integrity plus reduced radiated heat; EI = integrity plus full insulation), and the number is the duration in minutes. EI90 means the glass blocks flames, smoke AND heat for 90 minutes.
Building Regulations Part B requires it in specific locations — typically stairwells in multi-storey homes, doors and screens enclosing escape routes, and openings between dwellings (e.g. flats above shops). We'll review the specifics at survey and spec accordingly.
Sometimes — basic fire-rated glass is virtually identical to clear glass, while higher-spec EI products can have a slight green tint due to the intumescent interlayer. Modern manufacturers have largely eliminated visual differences in most specifications.
Yes — fire-resistant panes can be incorporated into double-glazed sealed units, combining fire performance with thermal insulation. The U-value will typically be slightly higher than standard double glazing, but still acceptable for most building regs scenarios.
Yes — significantly more than standard glass, particularly for higher EI ratings. The premium reflects the specialist manufacturing process and life-safety performance. Cost is justified by the legal compliance and protection it provides.
No — the glass and the frame must be tested and certified together as a fire-rated system. We supply pre-tested glass-and-frame assemblies for the specified rating, with full certification documentation for building control sign-off.

More in Glass & glazing

Toughened Glass

Toughened Glass

Heat-treated toughened safety glass — up to five times stronger than standard glass, and breaks into blunt fragments for added safety.

Laminated Glass

Laminated Glass

Laminated safety glass — bonded with a tough interlayer that holds the pane together when broken, for security, safety and sound control.

Double Glazing

Double Glazing

A-rated double glazing fitted in uPVC, aluminium and timber frames — the modern UK standard for warmer rooms and lower bills.

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