Annealed

Annealed glass will break into large shards.

Annealed glass is the result of a cooling process that glass undergoes after being produced in our factory. A piece of glass must be cut while in the annealed form, prior to undergoing additional processes such as heat-strengthening or tempering. Once a piece of glass has been heat-strengthened or tempered, it will shatter if cut.

If annealed glass is impacted, it will break into large shards.

Heat Strengthened

Heat strengthened glass will break into medium-sized shards.

Heat strengthened glass is annealed glass that is heated to approximately 1300°F, where it reaches its softening point. It is then cooled to create surface compression. This compression allows the glass to tolerate more rapid and uneven temperature swings.

Heat strengthened glass is approximately two times stronger than annealed glass; however, if impacted, heat-strengthened glass will break into medium-sized shards.

Insulating

Two panes of glass to reduce heat transfer.

A special silicone glazing process helps keep insulating glass from breaking away from the frame. Insulating glass is composed of two panes of glass separated by air or other gas to reduce heat transfer.

Laminated

Reduces glass from breaking away from the frame.

A special silicone glazing process helps keep laminated glass from breaking away from the frame. Laminated glass is composed of two pieces of glass bonded together with a strong clear interlayer. Once sealed, the glass “sandwich” behaves as a single unit and is transparent like ordinary glass.

Laminated Insulating

Two panes of glass for strength and one pane for added insulation.

A special silicone glazing process helps keep laminated insulating glass from breaking away from the frame. Laminated insulating glass is composed of three panes of glass: two panes of glass bonded together with a strong, clear interlayer for impact resistance and one pane for added insulation. Once sealed, the glass “sandwich” behaves as a single unit and is transparent like ordinary glass.

Tempered

More resistant to blunt impact and temperature swings.

Tempered glass is produced similarly to heat-strengthened glass: beginning as annealed glass and heated to approximately 1300°F. However, tempered glass is cooled more rapidly to create higher surface compression. This compression makes the glass more resistant to blunt impact and even more tolerant to temperature swings than heat-strengthened glass. Tempered glass is approximately four to five times stronger than annealed glass and is also known as safety glass due to its breakage pattern.

If tempered glass is impacted with enough force to break, the glass will shatter into countless small, slightly cube-shaped pieces that present less of a cutting hazard.

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