Common Glass Terms H thru R

HEAT-SCULPTED GLASS

Art glass pieces produced using the application of heat to cause changes in shape or texture. Once the final form is achieved, the glass is re-annealed to insure structural stability.

HEAT-STRENGTHENED GLASS

Flat or bent glass that has been heat-treated to have a surface compression between 3,500 and 7,500 psi (24 to 52 MPa) and meet the requirements of ASTM C 1048, kind HS. Heat-strengthened glass is not a safety glazing material and will not meet the requirements of ANSI Z97.1 or CPSC 16 CFR 1201.

LAMINATED DECORATIVE GLASS

Glass consisting of an assembly of two or more lites of glass permanently bonded with an interlayer that retains the glass in place when shattered. Interlayers may be in clear, translucent and opaque forms with colors and graphic designs. Laminates may include one or more decorative components. Laminates can be produced by using a decorative glass, a decorative interlayer or by incorporating a variety of decorative materials such as films, metallic foils, fabrics, rice paper, photographs and such. See ASTM C 1172 for standard laminate specifications.

LASER ETCHED GLASS

Decorative glass that has had an image engraved into the surface using laser technology. Laser etching can provide a high detail, crisp engraved image. Although this method employs heat to etch the glass, the heat is localized and does not require subsequent re-annealing.

MIRRORED GLASS

See Silvered Glass.

MOLDED GLASS

See cast, slumped glass.

NON-SLIP SURFACE

A surface treatment that results in an increased static coefficient of friction, typically used for glass flooring systems, floor tiles and stair treads. The walkable surface is roughened either evenly across the entire surface or in a decorative pattern to provide increased safety and add a creative element to the flooring design.

OBSCURE GLASS

See patterned glass.

PAINTED / BACK PAINTED

A coating applied to glass that completely covers the surface is virtually opaque and available in various solid and metallic colors. In some applications the glass can be partially coated with clear areas for design. Typical applications for painted glass are wall cladding, spandrel glass and furniture.

PATTERNED GLASS

Glass whose surface has been imprinted with a texture or pattern at high temperatures while still in the molten or malleable state. Also known as textured or obscure glass. (Also see cast, slumped, rolled).

ROLLED GLASS

Glass onto which a recurring texture or pattern has been impressed, on one or both sides, by passing the glass, while still in a soft or malleable state, between rolls with the desired design. Also known as patterned, textured or obscure glass).

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