A perforated tarpaulin Tarpaulins will also be used for ad printing, most notably for billboards. Perforated tarpaulins are usually used for medium to large marketing, or for protection on scaffoldings; the purpose of the perforations (from 20% to 70%) is to lessen wind vulnerability. A large-duty poly tarp is heavier https://cruzlkfau.illawiki.com/1398264/izmir_pergola_an_overview