MATERIAL DATA SHEET

Glass Block, various thicknesses (80mm, 100mm)

Glass Assembly
mineral › Glass › Glass Assembly
mineralglassmasonryfire-ratedacousticprivacylight-diffusingBAL-ratedAustralian-certified
ATLAS CODE
MIN-GLA-ASY-004
Glass Block, various thicknesses (80mm, 100mm)
Category mineral
Material Family Glass
Regulatory Status Non-combustible
Density
2500 kg/m³
Carbon (A1-A5)
1240 kgCO₂e/tonne
Fire Class
Non-combustible
Lifespan
50 years
Description

Glass blocks are architectural masonry units manufactured from pressed soda-lime glass, featuring hollow or solid construction. Standard dimensions are 190mm x 190mm with thicknesses of 80mm or 100mm. These units provide natural light diffusion whilst maintaining privacy, offering excellent fire resistance, acoustic insulation, and security. Commonly used in commercial, residential, and industrial applications throughout Australia.

Primary Sectors
[Commercial][Industrial]
Typical Uses
  • Privacy screens and partitions
  • Bathroom and shower walls
  • External façade features
  • Natural light diffusion panels
  • Fire-rated separations
  • Pool fencing and barriers
  • Commercial shopfronts
  • Stairwell enclosures
  • Basement windows
  • Decorative architectural features
  • Security glazing applications
  • Industrial clerestory windows
Recycled Content 20 – 30
Renewable Content 0
Recyclability 100
Embodied Carbon 1240 kgCO₂e/tonne
Embodied Energy 15 MJ/kg
EPD Available Yes
Advantages
Excellent light transmission whilst maintaining privacyHigh compressive strength (40-60 MPa installed)Fire ratings available up to FRL -/120/120Good thermal insulation (U-value 2.5-3.0 W/m²K)Sound reduction (STC 35-40)Zero VOC emissions - chemically inertMaintenance-free surfaceResistant to UV, moisture, and chemicals100% recyclable material50+ year service lifeBAL-FZ compliant options availableVandal and impact resistant
Cautions
Cannot be cut on site - requires precise planningNon-load bearing above openingsHigher installation cost than standard glazingLimited to modular dimensionsRequires expansion joints in large panelsHeavy weight requires structural supportCannot be opened for ventilationDifficult to repair individual blocksThermal bridging through mortar jointsProfessional installation recommended
TECHNICAL DATA: PERFORMANCE PROPERTIES MIN-GLA-ASY-004
Density (Dry) 2500 kg/m³
Specific Gravity 2.5
Porosity 0 %
Water Absorption 0 %
Hardness 6.5 Mohs
Surface Roughness 0.5 μm
UV Resistance 5 rating
Chemical Resistance 5 rating
pH Tolerance 1 – 14 pH
Compressive Strength 1000 MPa
Tensile Strength 7 MPa
Flexural Strength 40 MPa
Shear Strength 20 MPa
Elastic Modulus 70000 MPa
Yield Strength null MPa
Impact Resistance 3 rating
Bearing Capacity 50 MPa
Poisson's Ratio 0.22
Creep Resistance 5 rating
Abrasion Resistance 5 rating
Thermal Conductivity 1.05 W/(m·K)
Thermal Resistance 0.13 m²·K/W
Specific Heat Capacity 840 J/(kg·K)
Thermal Expansion 9 ×10⁻⁶/°C
Melting Point 1700 °C
Ignition Temperature null °C
Sound Transmission Class (STC) 38 STC
Noise Reduction Coeff. (NRC) 0.05 NRC
Optical
Light Transmittance 75 %
Light Reflectance (LRV) 8 LRV
Solar Reflectance (SRI) 35 SRI

Glass blocks were first developed in the early 1900s, with Gustave Falconnier patenting hollow glass bricks in 1886. Mass production began in the 1930s by companies like Pittsburgh Corning. In Australia, glass blocks gained popularity in the 1950s-60s for industrial and commercial buildings. Modern manufacturing uses the pressing technique developed by Luxfer Prism Company. Australian suppliers like Obeco (established 1989) have developed specific systems for local conditions including bushfire-rated assemblies post-2009 Victorian fires. Current products meet stringent Australian Standards with improved thermal performance and extensive fire ratings up to FRL -/120/120.

SAFETY, ECOLOGY & INSTALLATION MIN-GLA-ASY-004
Flame Spread Index 0 FSI
Smoke Developed Index 0 SDI
Combustibility Class Non-combustible
Ignition Temperature null °C
Fire Resistance Rating 60 minutes
Heat Release Rate 0 kW/m²
Toxicity of Combustion 0 rating
Embodied Carbon (A1-A3) 1240 kgCO₂e/tonne
Embodied Energy 15 MJ/kg
Water Footprint 15 L/kg
EPD Available Yes
Recycled Content 100%
Renewable Content 0%
LEED Points 3 points
Circular Economy Score 8 /10
VOC Emissions 0 g/L
Skill Level 3 rating
Crew Size 2 persons
Installation Time 4 hours/m²
Curing Time 24 hours
Setting Time 7 days
Temperature Range 5 – 35 °C
Humidity Range 40 – 90 %RH
Required Tools
Spirit levelString lineTrowelJointing toolSpacers (T-spacers)Rubber malletGrout floatSpongeMixing paddleWet saw (frame cutting only)
Certifications Required
General construction licenceWorking at heights (if applicable)
Weather Limitations
Avoid installation below 5°CProtect from rain during curingAvoid extreme heat >35°C
COMMERCIAL, LOGISTICS & REGULATORY MIN-GLA-ASY-004
Material Cost 8 – 25 AUD/block
Installation Cost 150 – 350 AUD/m²
Annual Maintenance 5 AUD/m²
Lifecycle Cost (50yr) 400 AUD/m²
Market Availability 4 rating
Lead Time 1 – 4 weeks
Design Life 50 years
Warranty Period 10 years
Maintenance Interval 12 months
Service Temp Range -40 – 80 °C
Freeze/Thaw Resistance 5 rating
Dimensional Stability 5 rating
Certifications Held
ISO 9001 Quality ManagementNATA accredited testingISO 14001 Environmental ManagementEPD available (major manufacturers)Zero VOC emissionsGREENGUARD Gold eligible
Fire Code Compliance
AS1530.4-2014 Fire resistanceAS1530.8.2 Bushfire (BAL-FZ available)NCC Spec C1.1 Fire resistance
Standards Compliance
NCC/BCA compliantAS1288-2006 Glass in buildingsAS3700-2018 Masonry structuresASTM C1036 Flat glassASTM C1048 Heat-treated glassISO 21690:2021 Glass blocksISO 12543 Laminated glassEN 1051 Glass blocksEN 572 Basic soda-lime glass

DISCLAIMER: This specification document is generated from the CLAD Materials Atlas Database. Information is for general guidance only and does not constitute professional engineering advice. Values are typical and may vary by batch, manufacturer, and production run. Verify suitability for specific project applications independently.

ID: MIN-GLA-ASY-004 Schema: v3.0