Structural silicone glazing

A glazing method in which a qualified structural silicone sealant transfers specified loads between glass or panels and supporting framing.

Meaning and boundaries

It is not decorative caulk or an ordinary weather seal; successful performance depends on design, adhesion, compatibility, geometry, cure, quality control, and the complete system.

Why it matters in glass restoration

Any activity that contacts, masks, heats, contaminates, cuts, or conceals the structural bond line is outside routine cosmetic restoration.

Related terms

• Glazing sealant
• Captured glazing
• Butt-jointed glazing
• Secondary IGU sealant

References

• ASTM International — C1401 — Standard Guide for Structural Sealant Glazing
  Publisher’s original source
• ASTM International — C1369 — Secondary Edge Sealants for Structurally Glazed IGUs
  Publisher’s original source
• Vitro Architectural Glass — The Difference Between Structural Silicone Glazing and Butt Joint Glazing
  Publisher’s original source