What is a setting block?
- Blocks made of neoprene, EPDM, silicone, polypropylene or other elastomeric material, used to support the bottom edge of a pane of glass when glazing it into a frame.
Principle functions of settings blocks:
- Provide a cushion to support a glass pane’s dead load
- Provide the proper glass bite at the cill
- Prevent glass edges from touching the frame thereby preventing damage to the glass
- Prevent glass edges from being immersed in water and facilitate drainage and drying
Important notes when installing setting blocks:
- Glass-to-metal contact must be avoided at all times by using setting and location blocks having a hardness of 50⁰ to 90⁰ shore A durometer.
- Only use blocks made of neoprene, EPDM, silicone, polypropylene or other elastomeric material.
- Setting blocks should have a minimum thickness of 3mm and be at least 27mm in length per square metre of
glass area. - When glazing laminated glass and/or sealed insulated glass units, drainage should be provided to prevent the glass edge being submerged.
- Two or more 7mm diameter holes or 5mm x 9mm slotted holes, or larger, should be equally spaced in the c i l l s e c tion of s a sh or fr ame to a l low for ventilation/drainage of the cill section.