08/10/2026
Lab conditions and real roofs are two very different stories.
On site, sheets are cut, handled, transported and drilled. Every scratch or cut exposes the coating to real-world conditions.
That’s where the difference between PPGI and PPGL becomes important. PPGI’s zinc coating can provide sacrificial protection at exposed edges and scratches, while PPGL relies more on its protective aluminium-zinc layer.
Because a roof doesn’t live inside a lab.