Glossary for Glass and Glazing terms
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A wearing, grinding or rubbing away by friction.
The inherent ability of a coating or substrate to resist degradation or destruction by friction.
The process of decorating glass, which involves the application of hydrofluoric acid to the glass surface.
See acid etching
The ability of coatings to adhere one to another.
The ability of a coating film to maintain its internal integrity without separating or layering.
Attachment of a coating film to a surface by molecular attraction without altering the coated surface.
An elongated bubble in glass.
To control the residual stresses in glass by controlled heating at, and cooling from, a suitable temperature.
Technical definition of the stress condition of ordinary glass.
Process designed to eliminate or limit stresses to glass by submitting the glass to strictly controlled cooling in a special oven known as a ‘lehr’.
Temperature at which the viscosity of the glass is approximately 1013 poises. At the annealing point of glass, internal stresses are substantially relieved in a matter of minutes.
A type of security glazing designed to resist manual attack and to delay access to the protected space for a short period of time.
See edge blocks
Glass with an uneven surface texture and bubbles inside, produced by using antique methods in order to obtain the appearance of glass made before the development of industrial processes.
Period of time during which a sealant can be effectively applied to a joint. The timing is from completion of mixing and could be affected by temperature, humidity or a combination of both.
The result of removing sharp edges.
A design developed primarily for reproduction.
The ratio of the longer side of a panel to its shorter side.
Material is asymmetric when it is composite and some of the components are of different thicknesses.
A vessel that allows materials to be subjected to a cycle of controlled temperature and/or pressure. Such a vessel may be used to bond glass and other laminates.
Space between the surface of the glass and the back of the rebate.
See glazing compound
That portion of the compound remaining between the back of the rebate and glass after the glass has been pressed into position in the bedding putty.
A material placed into a joint, primarily to control the depth of the sealant and to prevent adhesion at the base of the sealant bead.
A vertical member supporting a handrail and forming part of a balustrade.
A series of balusters supporting a handrail or coping at the open side of a stair, ramp, elevated platform, landing, balcony, parapet, or bridge.
A surface defect that looks like hammered metal. Unless very heavy, it usually cannot be seen by the naked eye, although it can be clearly seen on the shadowgraph.
A strip of wood, metal, sealant or other suitable material secured to the rebate to retain the glass. Also known as glazing bead or sealant bead.
bed or bedding
The glazing material used to seal between the glass and frame/bead.
bedding or stop
In glazing, the application of compound at the base of the channel, just before the stop is placed in position, or buttered (see buttering) on the inside face of the stop.
The process of manufacturing bent glass.