When sourcing Pilkington Glass, you must prioritize Visible Light Transmittance (VLT) and the Solar Heat Gain Coefficient (SHGC) to ensure energy efficiency. For safety and structural integrity, verify the tempering or heat-strengthening process meets ASTM C1048 or EN 12150 standards. If you are purchasing specialized products like Pilkington Activ™, ensure the self-cleaning photocatalytic coating is intact and verified by manufacturer batch reports. For acoustic insulation, check the Sound Transmission Class (STC) rating, especially for laminated glass variants.