Weight

• Both types of cored brick offer several weight advantages over whole brick. The act of coring reduces the overall weight of a brick making it easier to place. This reduces the potential for on-the-job injuries and also lowers the price of transporting the brick.
  
  

Consistency

• Coring follows ASTM regulations as to how close the core can be to the edge and how many can be placed in a specific sized brick. This allows for a more consistent manufacturing process as the brick will cure more evenly in the kiln than a whole block of clay or cement. Whole blocks can retain pockets of moisture that prevent full curing and create structural weakness in the finished brick that is undetected until it fails.
  
  

Strength

• Both square and round core bricks retain the same strength as whole bricks but may exceed whole bricks due to the curing being more even throughout the body. There is also demonstrable evidence that a cored brick may have better adhesive abilities than a whole brick as it is easier to control the thickness of the mortar between the cores than over an entire surface.
  
  

Inner support

• Square cored bricks are most commonly made of cement. The larger core is needed to accommodate rebar support structures that add to the tensile strength of the overall brick wall. Square cored bricks are also preferred when utility conduits are to be run inside a brick wall and are cheaper than smaller clay or ceramic bricks.