What are core bricks?
When air-conditioning was invented in the 1930’s, the textile industry decided to brick in the large windows that had provided a natural cooling-system to that point. By this time, brick manufacturing had evolved from the look and feel of the solid bricks that comprised the original walls of the structure. The result came to be known as “core” brick which introduced the three-hole design we still see today. This allowed the mortar to conjoin the bricks in an even more stable manner as well as reduced weight for shipping purposes.
