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Improved float glass quality by lowering surface defects is a permanent requirement from post processing glass companies.The quality of the Float glass is linked to multiple environmental and operational conditions that are affecting the glass when lifted from the tin bath down to the high temperature annealing zones in the float process.The bottom glass surface is directly influenced by the contact interface with solid roll surface and float working conditions.The quality of float glass is improved with the use of fused silica rollers in lift-out and first lehr roller positions.The improved resistance to tin and other metallic oxides or sulphate build up formation on fused silica rollers is demonstrated against metal rollers leading to significant reduction of glass bottom surface defects.