PART K · Falling collision and impact
Where is safety glazing needed
Safety glazing is needed in relevant locations where impact could cause injury. Part K identifies critical situations and provides guidance on appropriate protection. Do not assume that all glass is suitable because it is thick or described as architectural glazing.
Which locations need checking
Doors, glazing beside doors and low glazing are common areas to assess. The exact dimensions and exceptions need checking against the applicable guidance.
Ask the supplier to identify which panes fall within the relevant locations on the drawings. A large screen may contain panes with different roles.
Is toughened glass always the answer
The correct specification depends on the use. Toughened and laminated products behave differently, and an assembly used as guarding raises questions beyond injury on breakage.
For example, glazing at the edge of a raised terrace needs an assessment of the guarding system, including what happens if a pane is damaged. Specifying safety glass alone does not explain that performance.
What else can Part K require
Relevant glazing may need to be noticeable to people using a route. Opening arrangements, access for cleaning and protection against falls may also matter.
These are separate issues. A pane can have an appropriate impact classification but still form part of an unsuitable opening or an almost invisible screen.
What information should be supplied
Retain the glass specification, relevant performance evidence and installation details. Ask how panes will be identified and how the supporting frame or fixings are verified for the intended use.
Coordinate the design with fire safety, accessibility and thermal requirements where relevant. A glazed door on a protected route may need a fire performance specification as well as suitable impact protection.
Before ordering, get the complete assembly checked. Replacing only the glass after installation may not resolve a problem with the frame, visibility or supporting structure.