A perforated tarpaulin Tarpaulins are also useful for ad printing, most notably for billboards. Perforated tarpaulins are usually employed for medium to substantial marketing, or for defense on scaffoldings; the intention with the perforations (from 20% to 70%) is to reduce wind vulnerability. Thanked 29 Moments in 9 Posts Arc https://daltontbhnt.illawiki.com/1389131/fascination_about_pergola