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Abrasive blasting: |
Correct term for what is known as sandblasting or sand carving. A process of propelling an abrasive with compressed air to erode a glass surface so as to produce a frosted texture or to carve and shape the surface. |
Acid etching: |
Process of eroding glass through the use of a chemical that deteriorates and dissolves the glass. The acid used is hydrofluoric acid, a very dangerous chemical. |
Annealing: |
In the manufacturing of float glass, it is the process of controlled cooling done in a lehr to prevent residual stresses in the glass. Re-annealing is the process of removing objectionable stresses in glass by re-heating to a suitable temperature followed by a controlled cooling. |
Argon: |
An inert, nontoxic gas used in insulating windows to improve the insulating value of sealed glass units. |
Beveled edge: |
Refers to the treatment of glass edges by grinding and polishing. |
Bullet Resistant: |
A multiple lamination of glass or glass and plastic designed to resist penetration from medium-to-super-power small arms and high-power rifles. |
Caulk: |
Application of a sealant to a joint, crack or crevice. A compound used for sealing that has minimum joint movement capability; sometimes called low performance sealant. |
Condensation: |
Accumulation of water vapor from the air's humidity on any cold surface whose temperature is below the dew point, such as a cold window glass or frame that is exposed to humid indoor air. Low conductivity or warm edge spacers reduce condensation. |
Chipped Edge: |
An imperfection due to breakage of a small fragment from the cut edge of the glass . Generally this is not serious except in heat absorbing glass. |
Cut Sizes: |
Glass cut to specified width & length. |
Cutting: |
Scoring glass with a diamond, steel wheel, or other hard alloy wheel & breaking it along the score. Other methods of cutting glass include water jet & laser. |
Double Glazing: |
Any use of 2 lites of glass, separated by an air space, within an opening, to improve insulation against heat transfer and/or sound transmission. In insulation glass units, the air between the glass sheets is thoroughly dried & the space is sealed, eliminating possible condensation & providing superior insulating properties. |
Double strength: |
In float glass, approximately 1/8" (3 mm) thick |
Edgework: |
Grinding the edge of flat glass to a desired shape or finish. |
DSB: |
An acronym for Double strength glass, which is 1/8" thick window glass. |
Etching: |
Eroding the surface of glass by means of hydrofluoric acid or a weakened bifluoride compound known as etching cream. Through common usage, the term has come to mean abrasive blasting as well. |
Flat glass: |
A general term that describes float glass, sheet glass, plate glass and rolled glass. |
Float glass: |
Glass formed on a bath of molten tin. The surface in contact with the tin is known as the tin surface or tin side. The top surface is known as the atmosphere surface or airside. |
Glass: |
A hard brittle substance, usually transparent, made by fusing silicates, under high temperatures, with soda, lime, etc. |
Glazing: |
(n) A generic term used to describe an infill material such as glass, panels, etc. (v) The process of installing an infill material into a prepared opening in windows, door panels, partitions, etc.
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Grids: |
(also called Muttins or Grilles) Colonial square & diamond patterns between the glass. |
Hammered Glass: |
A rolled texture of small round, smooth bumps on the back surface of the sheet. |
Insulated glass: |
Unit Two or more pieces of glass spaced apart and hermetically sealed to form a single-glazed unit with an air space between the glass. (Commonly called IG units.) |
Laminated Glass: |
Constructed by bonding a tough polyvinyl butyral (PVB) plastic interlayer between two pieces of glass under heat and pressure to form a single piece. Can be made of any kind of glass, but is most typically made of annealed, heat-strengthened, or tempered glass. |
Lite: |
Another term for a pane of glass used in a window. Frequently spelled "light" in the industry, but often spelled "lite" in text to avoid confusion with light as in "visible light". |
Low-E coating: |
Low-Emittance Microscopically thin, virtually invisible, metal or metallic oxide layers deposited on a piece of glass and sealed in an insulating glass unit to reduce the U-Factor. The radiant energy (heat), i.e. long wave infrared, is in effect reradiated back toward its source. |
Mil: |
A measure of thickness used to classify resist materials. A mil is one thousandth of an inch. |
Non-Glare: |
A type of glass generally used in picture frames to prevent glare and provide a clear image |
Opaque: |
Opaque glass is much more solid in color. Very little light can pass through it stopping you from seeing through it. Whatever is etched appears as a lighter shade of the glass color. |
Patterned glass: |
One type of rolled glass having a pattern impressed on one or both sides. Used extensively for light control, bath enclosures and decorative glazing. Sometimes called "rolled", "figured" or "obscure" glass. |
Seedy glass : |
A slightly textured glass in which air bubbles are trapped to give the glass an extra sparkle (like Champagne). |
Tempered glass: |
Flat or bent glass that has been heat-treated to a high surface and/or edge compression to meet the requirements of ASTM C1048, kind FT. Fully tempered glass if broken will fracture into many small pieces (dice) which are more or less cubical. Fully tempered glass is approximately four times stronger than annealed glass of the same thickness when exposed to uniform static pressure loads. Also referred to as "safety glass" and/or "toughened glass".
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Translucent: |
Translucent glass is near transparent. Light can pass completely through it allowing you to see what's on the other side. Whatever is etched appears a darker shade of the glass because it stops some light from shining through. |
Waterglass: |
A texture achieved by stretching hot sheets; resembles the gentle ripple of water. |
