A perforated tarpaulin Tarpaulins can also be utilized for ad printing, most notably for billboards. Perforated tarpaulins are generally used for medium to massive marketing, or for cover on scaffoldings; the purpose of the perforations (from 20% to 70%) is to lower wind vulnerability. Thanked 29 Times in 9 Posts https://izmirawning28370.wikifrontier.com/8034167/fascination_about_pergola