Recently, I began estimating glass shelves for a bay window to accommodate a client’s orchids. I asked Zack Zoll of Standard Glass what type of glass I needed for the shelves, and I learned some glass basics. Here is a brief description:
Plate
- Not safety rated
- Comes in varies sizes, standard is 1/8” thick on up.
- Most common

An exampled of installed tempered glass
Tempered
- Safety rated
- Comes in varies sizes, standard is 1/8” think on up.
- Tempered process means it has been heated up to 1300 or 1400 degrees then gradually cooled down to adjust the stress level.
- Lead time for tempered increases by a couple of weeks, glass made to size, not meant to be recut.
- Typically put in doors or windows. New codes say 18” from ground and 18” from exterior doors.
- Typically in side windows in cars
- When it breaks it shatters, therefore less likely to cause severe injury
- Best in horizontal applications
Laminated
- Safety rated
- Standard sizes are ¼ and 3/8.
- Two pieces of plate glass bonded together
- Weaker than tempered glass
- Blocks UV light
- Sound blocking properties
- Difficult to break thru, when it is shattered it stays together
- Not best in horizontal applications
- Typically in car windshields
Thank you Standard Glass for the great information on windows.


