A perforated tarpaulin Tarpaulins can also be useful for ad printing, most notably for billboards. Perforated tarpaulins are generally used for medium to large advertising and marketing, or for cover on scaffoldings; the aim on the perforations (from 20% to 70%) is to lower wind vulnerability. Thanked 0 Times in https://izmir-awning05936.bmswiki.com/5135529/5_easy_facts_about_izmir_pergola_described