Glass Issues

Cracked Composite Door Glass

Cracked composite door glass - safe to leave short-term if laminated, urgent if not. Here's what to do.

Written by Cornwall Composite DoorsReviewed by Cornwall Composite Doors installersLast updated July 20262 minute read

Overview

A cracked pane needs assessing - laminated glass can hold together safely for weeks, toughened glass typically shatters completely. Either way, the sealed unit will start misting and needs replacement.

Symptoms

  • Visible crack.
  • Chip.
  • Corner damage.

Common causes

  • Impact.
  • Thermal stress (rare).

When to call a professional

  • Any crack in a security door is worth replacing promptly.

Prevention

  • Specify laminated glass on new orders.

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