BLD/Envelope/TBT-BLD-011

Glazing Safety

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Glazing Safety

Toolbox Talk Record

Ref: TBT-BLD-011  |  Issue: 1  |  Date: March 2026
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What?

  • Glazing installation involves handling heavy, fragile glass panels that shatter on impact causing severe lacerations.
  • Large glass panels can weigh several hundred kilograms and require suction lifters or crane installation.
  • Glass is invisible when clean; workers walk into unmarked glazing causing facial and body injuries.
  • Working at height is often required to install upper-storey glazing from scaffolds or MEWPs.
  • Wind loading on glass panels during lifting and positioning can cause sudden uncontrolled movement.
  • Toughened glass shatters into small cubes; laminated glass holds together but still causes cuts.
  • Glass dust from cutting and edge grinding is harmful to eyes and lungs without proper extraction.
  • Structural silicone and sealant products contain chemicals requiring COSHH assessment for skin and inhalation.
  • The CDM Regulations 2015 and the Work at Height Regulations 2005 apply to all glazing work.
  • Manifestation markings must be applied to installed glazing at eye level to prevent walk-in injuries.

Why?

Severe lacerationsBroken glass causes deep arterial cuts that are life-threatening. Even small fragments cause serious injuries.
Panel weightLarge panels dropped during handling crush workers. Wind catches panels and throws handlers off balance.
Walk-in injuriesClean, unmarked glass is invisible. Workers collide with installed panels causing facial and body trauma.
Do Don't
  • Use suction lifters rated for the panel weight for all glass handling.
  • Wear cut-resistant gloves and forearm protection when handling glass.
  • Apply manifestation markings to installed glazing at eye level promptly.
  • Use mechanical lifting for panels that exceed safe manual handling limits.
  • Stop glass handling and installation in high winds that cause panel movement.
  • Store glass vertically in A-frames on firm, level ground with restraints.
  • Use extraction when cutting or grinding glass to control dust and fragments.
  • Brief the team on the lifting method and wind limits before each shift.
  • Sweep up broken glass immediately using a dustpan; never use bare hands.
  • Wear safety glasses to protect eyes from glass dust and flying fragments.
  • DON'T handle glass panels without cut-resistant gloves and forearm protection.
  • DON'T carry large glass panels manually in windy conditions.
  • DON'T leave installed clear glass unmarked where people could walk into it.
  • DON'T stack glass panels flat on the ground; store vertically in A-frames.
  • DON'T pick up broken glass with bare hands; use a dustpan and brush.
  • DON'T lift glass panels that exceed the suction lifter safe working load.
  • DON'T use damaged suction cups; loss of vacuum drops the panel instantly.
  • DON'T cut or grind glass without eye protection and dust extraction.
  • DON'T lean glass panels against walls where they can slide and fall.
  • DON'T install glazing at height without proper access and fall protection.

See also: Window and Door Installation | Manual Handling Awareness
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