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

Why must field-applied silicone weatherseals be checked for compatibility with an insulating-glass unit's edge seal?

Because every silicone attacks aluminum frames Because incompatible sealants can stain, soften, or lose adhesion at the PIB primary seal or secondary IG seal and cause fogging or seal failure Because compatibility testing replaces the need for weeps Because GANA requires oil-based caulk against every IGU

Correct Answer:

Because incompatible sealants can stain, soften, or lose adhesion at the PIB primary seal or secondary IG seal and cause fogging or seal failure

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