Glass Setting Blocks are critical components in glazing systems, designed to support, position, and protect glass panels within frames, ensuring stability, longevity, and performance across diverse applications. Available in various material options—including EPDM, Neoprene, and Silicone, these blocks are tailored to meet specific environmental and functional needs, making them versatile solutions for residential, commercial, and industrial glazing projects.
EPDM Glass Setting Blocks
EPDM (Ethylene Propylene Diene Monomer) setting blocks are a popular choice for their exceptional durability in outdoor and harsh environments. Key properties include:
– Weather Resistance: Superior resistance to UV radiation, ozone, and extreme temperatures (from -40°F to 250°F), making them ideal for exterior applications like building facades, skylights, and outdoor glass enclosures.
– Moisture and Chemical Resistance: Unaffected by water, steam, or common chemicals, they perform well in humid settings such as bathrooms, pool areas, or industrial facilities.
– Durometer Balance: Typically ranging from 60–80 Shore A, they offer a mix of flexibility (to absorb vibrations and thermal movement) and rigidity (to evenly distribute glass weight, preventing stress cracks).
Neoprene Glass Setting Blocks
Neoprene (Polychloroprene) setting blocks excel in applications requiring strong physical resilience. Their standout features include:
– Oil and Grease Resistance: Unlike EPDM, Neoprene resists degradation from oils, solvents, and lubricants, making them suitable for industrial glazing near machinery or automotive environments.
– Mechanical Strength: High tensile strength and abrasion resistance ensure they maintain shape under heavy loads, supporting thick or large glass panels in commercial spaces or garage doors.
– Temperature Stability: Effective in moderate temperature ranges (-40°F to 200°F), they balance flexibility and structural support for indoor and sheltered outdoor use.
Silicone Glass Setting Blocks
Silicone setting blocks are prized for their extreme temperature tolerance and specialized compatibility. Key attributes include:
– Wide Temperature Range: Withstands extreme heat (up to 400°F) and cold (-60°F), making them ideal for high-heat environments like oven doors, fireplace enclosures, or industrial ovens.
– Chemical Inertness: Resistant to most acids, alkalis, and solvents, they are suitable for laboratories or medical facilities where chemical exposure is a concern.
– Low Compression Set: Maintains shape over time, ensuring consistent support for glass in applications where long-term stability is critical, though they may be less cost-effective than EPDM or Neoprene for general use.
Shared Functions Across All Types
Regardless of material, Glass Setting Blocks serve core roles:
– Distributing glass weight evenly to prevent stress fractures.
– Isolating glass from rigid frame materials (metal, concrete) to reduce scratches and friction.
– Maintaining precise spacing for sealants, enhancing weatherproofing and insulation.
Available in various sizes (1/16” to 3/16” thickness, 4” standard lengths) to fit different glass thicknesses and frame designs, these blocks are essential for optimizing glazing system performance, with material selection guided by environmental conditions and project-specific demands.