Choosing your windows

Be protected from flames and smoke!

Fire glass needs to resist against impact, provide a physical barrier against gases, flames and smoke, control radiated heat and limit surface temperature. Fire resistant glasses are manufactured using a range of toughening, laminating[Susan1]and coating technologies. Traditional wired glass solutions are also available, but they offer lower heat resistance and can cause injury by shattering.

Thermally toughened fire glasses

Thermally toughened fire resistant glasses offer protection from flames and smoke, with the option to reduce radiated heat. The toughening process, which involves heating float glass to a temperature of 600°C, also means the glass will not break, (or will break safely without causing harm) in the event of extreme temperatures caused by fire.

Types of toughened fire resistant glasses

Thermally toughened fire resistant glasses provide a barrier against smoke, flames and toxic gases for a given amount of time (depending on the specific glass product used). They can also incorporate a heat reflective coating for reducing radiated heat. Some of the most advanced fire glass are filled with a transparent gel which reacts when exposed to fire. The gel absorbs energy from fire, acting as a heat shield and keeping temperatures on the non-fire side of the window much lower.
Fire resistant glasses are required to meet with British Safety standards and the most effective fire glasses attain a class A rating on the BS scale. New, more demanding CE standards will also be coming into effect in the UK shortly.

Laminated/Interlayer fire protection glasses

Laminated/interlayer fire glasses offer protection against conducted heat produced by fire, limiting the temperature rise within a room for a particular length of time. Laminated fire resistant glasses are composed of one or more sheets of float glass, bonded together by one or more interlayers. Thanks to the laminate interlayer, risks of breakage and injury are also reduced, giving this type of fire protection glass security and safety properties. Laminated fire glasses can also be filled with a transparent gel which reacts when exposed to fire, turning opaque. The gel acts as a heat shield, keeping temperatures on the non-fire side of the window much lower.

Combinations with other types of double glazing window solutions

Fire resistant glasses can be combined with other glazing solutions such as decorative glass and Low E glass, within the same double glazed unit. (See Which Glass Combinations).

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