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Frequently Asked Questions
Does the wire make it stronger?
No, and this is widely misunderstood.
It is weaker than plain glass of that thickness.
The mesh interrupts the glass.
That creates stress points within it.
Strength is not what the wire provides.
What does the wire do?
It holds fragments together in a fire.
Thermal shock cracks the glass quickly.
The mesh keeps the pane in the opening.
It continues to block flame and gases.
That is fire integrity.
Why is impact a concern?
It breaks more easily than plain glass.
And it breaks into shards, not granules.
The wires restrain those shards.
That can make a wound worse.
Falls against it cause serious injuries.
Is it still permitted?
It is restricted in many markets.
Doors, side panels and low-level glazing especially.
Schools and public buildings often prohibit it.
Rules differ by jurisdiction.
Check current local requirements.
What replaced it?
Clear fire-rated glass.
It provides fire performance without the mesh.
And it can meet impact safety too.
It costs more than wired glass.
It is the usual choice in new work.
When is it still bought?
Replacement in existing installations.
Matching an existing appearance.
Locations where impact is not foreseeable.
High-level and inaccessible glazing.
Confirm the location permits it.
Can it be cut?
Yes, though the mesh must be cut through.
The resulting edge is rough.
Exposed wires can corrode if wetted.
That stains the glass from the edge inward.
Seal or protect cut edges.