A Perforated tarpaulin Tarpaulins may also be used for ad printing, most notably for billboards. Perforated tarpaulins are usually used for medium to substantial advertising, or for cover on scaffoldings; the goal of the perforations (from 20% to 70%) is to lower wind vulnerability. A superior-responsibility poly tarp is heavier https://pergola45320.celticwiki.com/1374355/izmir_pergola_an_overview