Rubber Extrusion | Silicone Setting Blocks
Product: Silicone Setting Blocks
Category: Rubber Extrusion
Setting blocks are typically used as cushions between glass and aluminum in architectural systems. Blocks come in many thicknesses, widths and lengths as well as many different polymers.
Setting blocks or dense material can be extruded or fabricated to any length required. A pressure sensitive adhesive (PSA-1) can also be added to these materials.
A minimum of two setting blocks should be placed on each edge of the sash, serving to distribute weight evenly. The dimensions of the setting block are determined by the width and length of the IG unit ie. Larger panes require longer blocks. The gauge (thickness) of the setting blocks should be consistent on all four sides of the sash in order to promote even displacement.
Setting blocks are primarily used to stop glass from cracking, to maintain the integrity of the glazing bead and to protect the IG unit from sash impact. Silicone setting blocks are chemically compatible with all sealants tested to ASTM C1087.