SC Glass And Glazing Practice Questions - South Carolina Glass And Glazing Contractor Examination Exam

What are the two main jobs of a backer rod in a gunable sealant joint?

To structurally glaze the glass and replace setting blocks To control sealant depth and prevent three-sided adhesion To electrically insulate the aluminum from the glass To serve as the only weather barrier, so sealant can be omitted

Correct Answer:

To control sealant depth and prevent three-sided adhesion

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