Pattern Glass Glossary

Background Glass

Refers to the glass choice around the Design. Usually composes 50% of the area and is a critical element in providing privacy.


Grids which are present in the glass. They can be between the glass (GBG), raised mullions that you can touch.

Beveled Glass

Taking a thick piece of glass (3/8″ to 1/4″) and cutting an angle along the entire perimeter, which will refract rainbow colors when struck by light

Obscurity Level

Designation given to each glass pattern from 1-5. One being least obscure while 5 is the most obscure permitting “bathroom” levels of privacy, while still permitting the light to transfer into the room

Border Glass

Refers to the perimeter of the of the glass, where most often a different glass choice from the background glass is used to contrast the textures and provide definition for the design and strength for the structure being made to prevent cracks.

Patterned Glass

Clear flat glass smooth on one side with a pattern embedded on the other side leaving it textured. There are over 40 different patterns. Ranges in obscurity from 1-5 depending on the design


Refers to the details that are the central focus of the glass being made, usually composes 40% of the area.


Window(s) running vertical on either side of a door. They can be full, half or ¾ length of the door. Many have mullions. They also can appear on either side of a window found in 2nd story foyers. Usually 6 “ to 7” in width, but can be as wide as 14”.


Shape of a window, often above another window or door. The base measurement is approximately twice the measurement of the height.

Stained Glass

See Leaded Glass


Formed from molten glass that is crimped by special pliers, these glass pieces can be smooth or beveled glass. Often hand polished with many facets, with one flat side.

Tiffany Technique

Refers to the wrapping of the glass in copper foil then soldering it with lead to hold the pieces together. Lead caming was the technique used prior to Tiffany’s invention. Both are considered “stained glass”.

Leaded Glass

Interchangeable with Stained Glass. Refers to the metal used to hold pieces of the glass together (solder or lead). Glass can be clear, colored or stained.


Any window or opening immediately above a door, doorway or window. Usually they are rectangular, but can be elliptical or half-round in shape. Before mechanical ventilation, they were used to ventilate a home.

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