Fire Specifications - Getting It Right
When it comes to fire glass, specification is not a box-ticking exercise; it is a safety-critical decision. Supporting our customers in making the right call is incredibly important to us, because one wrong detail can invalidate certification, delay projects or, worse, compromise safety.
When working with our customers, I’ve learned that the difference between a smooth installation and a costly redesign often comes down to one thing: clarity at the point of specification. A few early conversations can save weeks of frustration later on.
Fire-rated glazing does not work in isolation. It performs as part of a tested system. The glass, the frame, the glazing method and the application all interact. Change one variable, and the certification can change with it.
So before placing an order or finalising drawings, these are some of the questions we always work through together.
1. Is the glass for an internal or external application?
This is the first and most fundamental question.
Internal systems are tested and certified differently to external systems. External applications may introduce additional considerations such as weather resistance, thermal movement and exposure classifications.
Specifying internally rated glass for an external environment, or vice versa, can invalidate performance claims, and that’s not a position anyone wants to be in once a project is underway.
2. Is the glass single or double-glazed?
Single glazing and insulated glass units (IGUs) are tested differently and certified differently.
A fire-rated pane within a double-glazed unit does not automatically carry the same classification as its single-glazed counterpart. The full unit must be tested and approved as a system.
Taking the time to confirm whether the specification calls for single or double glazing avoids assumptions that can later turn into compliance issues.
3. How many minutes of integrity and insulation are required?
Fire performance is typically classified by integrity (E) and insulation (EI).
Integrity refers to the ability of the glazing to prevent flames and hot gases from passing through. Specifying the correct integrity period ensures the glazing meets the compartmentation strategy of the building.
Insulation relates to limiting heat transfer to the non-fire side. This is critical in escape routes and areas where heat radiation must be controlled, as not all fire glass provides insulation. Some products offer integrity only. Others provide both integrity and insulation. Understanding the distinction is crucial when meeting regulatory and safety requirements.
Why getting it right matters
Fire-rated glazing forms part of a building’s life safety strategy. It protects escape routes and supports regulatory compliance. But beyond that, it protects people.
The right glass, in the right frame, installed in the right way, for the right duration, that is what delivers certified performance.
At Ecoglass, my role is not simply to specify fire glass. It’s to work alongside you, our customers, to ensure the specification aligns with tested systems and regulatory requirements from the very beginning.
Because when it comes to fire protection, clarity isn’t just helpful, it’s essential.