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Glass Blocks start with the silica sand, limestone, and soda ash.

These materials are turned into molten glass at temperatures over 2300 degrees Fahrenheit.

        

From the melting furnace, the molten glass is drawn and cut to exacting weights,

          

and transported to the glass molds.
 


The glass molds press the molten glass into half blocks, each with a designated Glass Block pattern. Half blocks are then transported in a heat controlled environment to an automated system that is designed to align the half blocks for their final sealing. Once the half blocks reach the automated sealing system, their edges are first superheated and then fused together under high pressure for a perfect airtight seal.





After sealing, the now full blocks are fed into a carefully monitored and temperature-controlled annealing oven or lehr, which allows them to slowly cool and strengthen over an extended period of time.


Blocks move on to be treated with edge coating which allows the edges of the block units to grip mortar during installation.




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