Mockups aren't just quite sneak peeks; they confirm fastening techniques, development joints, drainage

https://telegra.ph/Roofing-System-Vents-that-Tell-the-Truth-Coppers-Century-of-Efficiency-in-Demanding-Climates-07-05

Mockups aren't simply pretty previews; they verify attaching approaches, expansion joints, drainage, and surface aging before major manufacturing commits budgets and time.