A perforated tarpaulin Tarpaulins are also used for ad printing, most notably for billboards. Perforated tarpaulins are usually employed for medium to substantial marketing, or for cover on scaffoldings; the aim in the perforations (from 20% to 70%) is to scale back wind vulnerability. Thanked 29 Periods in 9 Posts https://louispzflp.theideasblog.com/34531469/fascination-about-pergola