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Technical Information – Planibel Sample
06/2014
1 INTRODUCTION
This Technical information gives information about sample of the range of float glass Planibel: Planibel Clear, Planibel Clearvision, Planibel Linea Azzurra, Planibel Azur, Planibel
Bronze, Planibel Dark Blue, Planibel Dark Grey, Planibel Green, Planibel Grey and Planibel
Privablue.
2 COLORS OF GLASS SAMPLE VERSUS FULL SIZE
INSTALLATION.
The comparison of a small size glass sample, especially looking the color on the edge of
glass, and the final product full size installation can show some variation due to the different
size and thickness of the glass.
The color of the glass is due to the absorption inside the glass when the light passes through
the glass.
When looking at the glass from the top (through the face), light travel through a few millimeters of glass few light absorption. (see figure 1 left.)
When looking at the edge of the glass, the light passes through the all length of the glass so
light travel through several centimeter or meter of glass increased absorption (see figure 1
right.)
Figure 1. Absorption is smaller when looking through the face of the glass
than when looking through the edge of the glass because the distance is more important.
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Example : The table below show an approximation of the visual aspect on the edge of clear
and extra clear glass for several size of sample. Color of 50 cm sample of extra clear glass appear on the edge as quite similar to 5 cm sample of normal clear glass.
Size of sample (cm)
Extra clear glass
Normal clear glass
5
10
20
30
40
50
Conclusions :
- Color of glass when looking from the top (face) or through the edge appears different.
- Color of glass when looking from the top (face) appears different in function of the
thickness of the glass.
- Color of the glass through the edge appears different function of the size of the glass
sample.
Based on these fact, we can recommend :
- Always compare sample of same size / thickness.
- Be aware that visual aspect on the edge of final full size glass surface can be different
than the visual aspect on the edge of a small glass sample.
- On a particular application, always use same glass thickness on all the visible surface
(especially if colored glass is used) to have the same visual aspect on all the surface
(for tinted glass, color appearance is function of the glass thickness).
3 OTHER RELATED DOCUMENTS
Following documents are also available from www.YourGlass.com:
Processing Guide
Technical Data Sheet
Cleaning and Maintenance Guide for Façade glazing
Glazing Instruction
CE-Marking declarations
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