Will Mach sheet ever lose its Low co-efficient of friction (slippery) surface?

No. The slippery surface will always remain, even if the sheet is worn to half its thickness. The slippery surface is not just a surface treatment that you see with many other plastics, it is inherent to its structure and is throughout the material. Our trademarked AAF™ (Accelerated Anti-Friction) is through the entire thickness of the panel, therefore you will always receive the benefit of amazing slip!