The strength of laminated glass is governed by the type of glass used, the condition of the glass surfaces and edges, unit geometry support condition, and nature of loading. Monsanto's Research Department has demonstrated that the most common laminated glass products (same ply thickness, same glass type) will behave as if the unit is monolithic, except in two unusual loading situations:

Laminated glass units fabricated with heatstrengthened and fully tempered glass are two and four times stronger respectively than units fabricated with annealed glass.

GLAZING INFORMATION

Glazing Practices: Good glazing practices, such as those recommended in the Flat Glass Marketing Association (FGMA) "Glazing Manual" and "Sealant Manual" ' should be followed when installing laminated glass. The weather seal should be tight. Water should not be allowed to collect in the glazing channel. Weep holes must be provided. Prolonged exposure of the laminate edge to moisture can result in cloudiness or delamination along the edge.

Exterior Glazing of Laminated Glass:

Compatibility of Materials:

Verifying the chemical compatibility of various glazing materials with laminated glass is the responsibility of the glazier.

The following chart shows the glazing tolerances that generally are recommended by the manufacturers of laminated glass.

Recommended Clearances