1 Algorithm based on impact on opinions over time - and Wikipedia. 2  Top ten most significant in history puts Jesus in the number one spot.  The list also includes Muhammad, Lincoln, Hitler and Shakespeare.
Plies vary in thickness from 1.4 mm to 4.3 mm. The number of plies depends on the thickness and grade of the sheet but at least three are required as the minimum odd number of plies. Roofing can use the thinner 5/8 (15 mm) plywood.
How much does plywood cost? The cost of a sheet of plywood will depend on the size and where itâs purchased. Depending on the thickness, plywood can cost anywhere from $5 to as much as $55 for a 4Ã8 sheet. For example, a 4Ã8 that 1/4â³ thick can cost $6, while a 4Ã8 that is 11/32â³ thick can cost around $15. See our chart below to give you a better idea of what you may pay at a local hardware store.