A perforated tarpaulin Tarpaulins can also be used for ad printing, most notably for billboards. Perforated tarpaulins are usually used for medium to large promotion, or for cover on scaffoldings; the goal with the perforations (from 20% to 70%) is to reduce wind vulnerability. Thanked 29 Times in 9 Posts https://pergola69692.blogvivi.com/34707564/5-easy-facts-about-izmir-pergola-described