A perforated tarpaulin Tarpaulins can also be employed for ad printing, most notably for billboards. Perforated tarpaulins are generally used for medium to significant promoting, or for defense on scaffoldings; the purpose of the perforations (from 20% to 70%) is to lessen wind vulnerability. Thanked 29 Moments in 9 Posts https://franciscoaoamu.wikimidpoint.com/5056664/the_izmir_pergola_diaries