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Shading coefficient (SC)
The solar factor of a glass relative to that of 3mm clear float glass (0,87) and is used as a performance comparison. The lower the shading coefficient number, the lower the amount of solar heat transmitted.
Short-wave infrared radiation
Invisible radiation emitted by the sun and other hot objects.
Single-strength glass
A term used to describe glass with a defined thickness (2.16-2.57 mm).
Solar control coatings
A microscopically-thin coating that absorbs or reflects solar energy.
Solar heat gain coefficient (SHGC)
A numerical expression between 0 and 1 expressing the performance of glass in transferring heat.
Solar radiation
The total energy radiating from the sun.
Spectrally selective glazing
A special coated glass which is transparent to some energy wavelengths and reflective to others.
Single glazing
Window or door with a single glass lite.
Safety Glass
Glass which must have passed an impact test and either must not break or must break safely.
Sandblasting
A special glass treatment in which sand is sprayed at high velocities over the surface of the glass.
Sealant
A flexible material for sealing.
Sealed Double Glazed Unit
A combination consisting of two glass panes enclosing a hermetically-sealed air space.
Sealed Multiple Glazing Unit
A combination consisting of several glass panes enclosing a hermetically-sealed air spaces.
Sealer
A substance applied to glass and frame surfaces that guarantees consistent adhesion.
Sheet Glass
A lite of glass.
Silicone
A polymeric organic compound offering excellent resistance to cold, heat and water.
Surface Coatings
A thin layer or covering which changes the basic composition of glass.
Solar Heat Gain
The amount of heat that a structure gains through the glazing surface.
Sand-blasted glass
This type of glass is produced by spraying sand at high velocities over the surface of the glass.
Sputtering
Is a method better known as "vacuuming" to apply coating on the glass.
Smart glazing
A concept in which the main idea is to minimize the energy consumption of fully glazed buildings.
Structural sealant glazing
An external glazing system where the glass is bonded to a carrier frame without mechanical means.
Screen printed glass
Screen printed glass is tempered or heat-strengthened glass, one face of which is covered, either partially or totally, with mineral pigments.
Secondary seal
A sealant applied to the edges of double-glazed units after the primary seal, to provide effective and durable adhesion between the glass components and spacer bar.
Sight size
The actual size of the opening that admits daylight.
Snow load
An imposed load exerted onto a structure by formation of snow.
Space bar
Generally an aluminum bar along all edges of a double-glazed unit, filled with desiccant, which separates the twoo panes of glass and creates a cavity.
Spall
Small fragments of glass that are ejected from the surface of a laminated glass sheet when the opposite surface is impacted.
Self cleaning glass
This type of glass is covered by a special coating which literally cleans itself.
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