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R-value
See U-value.
Rolled Glass
This describes glass is made through a rolling process, whereby the semi-molten glass is squeezed between metal rollers to produce a ribbon with pre-defined thicknesses and patterned surfaces. This process is used for patterned figure and cast glass production.
Radiation
The process by which heat is emitted from a body through open space, like sunlight.
Rake
The trimming of a first compound application used to seal glass, so as to facilitate the addition of a second sealant.
Rebate
The section of the frame surround which forms an angle into which the glass is placed and held.
Reflective Glass
This is an ordinary float glass with a metallic coating to reduce solar heat. This produces a mirror effect, and is mainly used in building fa
Resin laminate
Two or more sheets of glass assembled with one or more resin interlayers.
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