Quick Tip on How to Measure the Stack Height of a Window Hinge
Measuring the Stack Height:
• The stack height refers to the distance between the two halves of the hinge when it is fully closed. This is measured from the base of the hinge to the top when the hinge is folded.
• Standard stack heights are typically:
o 13mm: This is common for older windows and provides less clearance between the sash and the frame.
o 17mm: This is more common in modern windows, as it allows for thicker glazing units and more robust weather seals.
• How to Measure: Use a ruler or caliper to measure from the underside of the sash hinge (part attached to the sash) to the top of the frame hinge (part attached to the window frame) when the hinge is closed.
The shift from a 13mm to a 17mm stack height for window hinges is often associated with changes in window design and hardware standards in the industry, particularly in uPVC (unplasticized polyvinyl chloride) windows. This change became more common around the early to mid-2000s, when manufacturers began to standardize hinge designs to accommodate different frame profiles, insulation needs, and evolving building regulations, particularly concerning thermal efficiency and weather sealing.
The 17mm stack height allows for greater clearance, which helps with thicker gasket seals or glazing and improves the overall energy efficiency of the window. However, the exact timing can vary by region and manufacturer. If you need a specific date for a certain manufacturer or region, checking with suppliers or technical documentation from that era could provide more precise information.
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