ASTM C1369 is the ASTM standard for secondary edge sealants used in structurally glazed insulating glass units. It provides a technical basis for identifying and evaluating sealant materials intended to support the edge-seal function in these assemblies. As a specification, it helps buyers, manufacturers, and specifiers align on the expected product category and performance-related requirements, which can support more consistent selection, quality control, and compliance efforts.

Purpose of ASTM C1369

The purpose of this standard is to define requirements for secondary edge sealants used in structurally glazed insulating glass units. In practice, that means it serves as a reference for material qualification and product specification within glazing system workflows. ASTM C1369 helps establish a common technical language for evaluating sealant products that contribute to the performance of the IG unit edge seal, especially where structural glazing applications demand careful material selection and consistent manufacturing control.

Common use cases of ASTM C1369

This standard is commonly used when selecting or specifying secondary edge sealants for insulating glass units that will be incorporated into structurally glazed assemblies. It may be referenced by sealant manufacturers, IG unit producers, glazing system designers, and procurement teams seeking a clear product specification. ASTM C1369 is also useful during product qualification, submittal review, and documentation of materials intended for coordinated glazing system use.

Why ASTM C1369 matters

ASTM C1369 matters because secondary edge sealants play an important role in the reliability of insulating glass units used in structural glazing. A recognized specification can reduce ambiguity during purchasing and review, support more consistent product comparison, and strengthen quality assurance practices. For projects that depend on dependable edge-seal materials, the standard can help improve compliance tracking and reduce the risk of mismatched or unsuitable sealant selection.

• Secondary edge sealant specification
• Structurally glazed IG units
• Material selection and qualification
• Quality control and procurement reference
• Performance-focused product evaluation