Red Seal Glazier Practice Exam

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What is the primary function of a glazing bead?

A molding used to secure the glass within its frame

The primary function of a glazing bead is to secure the glass within its frame. This component is essential in ensuring that the glass stays in place, providing structural integrity to the window or door system. The glazing bead locks the glass against the frame and helps to prevent any movement that could lead to damage. It also plays a role in creating a tight seal, which contributes to energy efficiency and reduces air and water infiltration.

While there are other elements such as sealants and spacers that assist in a window's weatherproofing and thermal performance, the glazing bead's main purpose is focused on physical attachment and stability of the glass. As a result, it is a critical component in the overall construction and functionality of glazing systems.

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A decorative element for window frames

A type of sealant for weatherproofing

A spacer to enhance thermal performance

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