A granite slab weighs approximately 70-100 pounds per square foot

Granite slabs typically weigh between 70-100 pounds per square foot depending on thickness and density. This weight affects transportation, installation, and structural requirements for countertops and flooring applications.

Factors Affecting Granite Slab Weight

  • Thickness: Standard kitchen countertops are 3cm (1.2 inches) thick
  • Density: Different granite types have varying densities
  • Size: Larger slabs naturally weigh more
  • Finish: Polished vs. honed finishes can slightly affect weight

Weight Comparison Across Common Applications

Application Average Weight per Sq Ft Typical Thickness Installation Considerations
Kitchen Countertops 80-90 lbs 3cm (1.2") Requires sturdy support
Bathroom Vanities 70-80 lbs 2cm (0.8") Lighter load, easier handling
Flooring 90-100 lbs 4cm (1.6") Structural reinforcement needed

Calculating Total Weight

  1. Determine slab dimensions (length × width)
  2. Calculate square footage
  3. Multiply by weight per square foot
  4. Add 10% for safety margin

Transportation and Handling

  • Standard delivery trucks handle up to 1500 lbs
  • Heavy slabs require professional installation
  • Weight impacts shipping costs significantly